CN103539294A - Method for recovering silver plating wastewater and silver - Google Patents
Method for recovering silver plating wastewater and silver Download PDFInfo
- Publication number
- CN103539294A CN103539294A CN201310466158.3A CN201310466158A CN103539294A CN 103539294 A CN103539294 A CN 103539294A CN 201310466158 A CN201310466158 A CN 201310466158A CN 103539294 A CN103539294 A CN 103539294A
- Authority
- CN
- China
- Prior art keywords
- silver
- waste water
- sections
- reverse osmosis
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y02W30/54—
Abstract
The invention discloses a method for recovering silver plating wastewater and silver. The method comprises four process units: purification treatment and recycling separation and reuse of silver plating wastewater, recycling concentration of silver-containing solution and electrolytic recovery of silver. The method realizes zero emission of the silver plating wastewater by transforming silver plating cleaning wastewater into pure water by the method of recycling separation at the first stage and then returning the pure water to the production line for recycling. Simultaneously, a concentrated solution having a silver content which is more than 160 times of that in the silver plating cleaning wastewater is obtained through recycling concentration at the second stage; then the concentrated solution having the silver content which is more than 160 times of that in the silver plating cleaning wastewater is obtained by an extremely economical method through recovery by an electrolytic method; as a result, the efficiency of electrolytic recovery is higher and the cost is reduced; the dilemma that too low content of silver in the silver plating wastewater is uneconomical to recover and regrettable to waste is solved; therefore, the noble metal resource is saved and the environment is protected.
Description
Technical field
The invention belongs to technology for treating industrial waste water field, be specifically related to a kind of silver-colored method that reclaims from electroplating wastewater.
Background technology
In electroplating wastewater, contain various heavy composition, according to the technical project of " qualified discharge ", the discharge of wastewater of treated " up to standard ", still has certain pollution to environment, the raw materials such as the gold and silver that simultaneously use due to plating, copper, nickel, chromium are to be all worth very high noble metal.High for heavy metal out of electroplating wastewater composition recovery value, deal with the characteristic serious to environmental hazard improperly.Contriver's process is to the multiple treatment process repetition test of electroplating wastewater and utilization, that has found a kind of less expensive directly reclaims single metal ion from rinse bath, realize rinse water and metal ion fully recovering and to the electroplating washing water method that cycle for the treatment of utilizes of classifying, (patent No. is respectively: ZL200810235197.1 respectively in November, 2008 and in April, 2010 having applied for patent of invention; ZL201010156033.7), foregoing invention has effectively solved the recycle of copper facing, nickel plating, chromium plating wastewater, and the recovery problem of copper, nickel, chromium, due to the chemistry of silver-plated waste water and physical property and above-mentioned waste water difference very large, the recycle of silver-plated waste water and silver-colored recovery problem fail to relate to.The method of existing silver-plated wastewater treatment mainly contains chemical precipitation method, electrolytic process, metal replacement method, ion exchange method and absorption method.Chemical precipitation method is traditional " qualified discharge " treatment process, simple to operate, and its maximum deficiency is that water of productive use can not be recycled, and after the silver in waste water is precipitated as solid waste, the large cost of secondary recovery difficulty is high; Electrolytic process is to utilize the electrochemical properties of metal, silver under direct current effect and in recovery waste water, to process a kind of effective ways that contain high concentration electric metal refining waste water, processing efficiency is high, but this method shortcoming is not to be suitable for the silver-containing waste water of processing low concentration, and the large cost of power consumption is high, cannot be directly used in the processing of silver-plated waste water; Ion exchange method is simple and convenient, but because ion-exchanger selectivity is strong, manufactures complicated.Cost is high, and regenerating agent consumption is large, therefore in application, is very limited; Absorption method is to utilize the unique texture of sorbent material to reclaim argent.Use the absorption method of different sorbent materials, have to some extent the problems such as investment is large, and working cost is high, and sludge creation amount is large, the shipwreck after processing is in qualified discharge.
Summary of the invention
The object of the invention is for silver-colored chemistry and physical property in the problems referred to above and silver-plated waste water, specific membrane technology and traditional electrolysis process are combined, designed directly reclaiming of a kind of economical and efficient silver-colored from silver-plated waste water, make silver-plated waste water be purified processing simultaneously, thereby return to the method that production line recycles.
Object of the present invention can reach by following measures:
Reclaim silver-plated waste water and a silver-colored method, the method mainly, silver-colored electrolytic recovery four technique units concentrated by the circulation of the purifying treatment of silver-plated waste water, circulation separating and recovering, Ag-containing solution forms, and it specifically comprises the steps:
(1) purifying treatment of silver-plated waste water: the silver-plated waste water of raw material argentiferous is carried out to two-stage filtration purification, wherein single filter purifies and by sand filter, activated charcoal filter and accurate filter, completes successively, and cascade filtration purifies and by cartridge filter and UF ultra-filtration equipment, completes successively;
(2) circulation separating and recovering: after two-stage filtration purifies, waste water carries out one section of reverse osmosis isolation through one section of reverse osmosis membrane of high-pressure pump injection, obtains respectively pure water and one section of concentrated solution; Described one section of reverse osmosis membrane adopts polyamide composite film;
(3) circulation of Ag-containing solution is concentrated: described one section of concentrated solution is sent into cartridge filter by topping-up pump and filtered, and then through high-pressure pump, delivers to two sections of reverse osmosis membranes and carries out two sections of reverse osmosis concentration processing, obtains respectively fresh water and two sections of concentrated solutions; The fresh water wherein obtaining mixes with the waste water purifying through single filter in step (1), carries out follow-up cascade filtration purifying treatment; After mixing with described one section of concentrated solution, two sections of concentrated solutions that obtain again by cartridge filter and two sections of reverse osmosis membranes, carry out two sections of reverse osmosis concentration circular treatment; Described two sections of reverse osmosis membranes adopt polyamide composite film;
(4) electrolytic recovery of silver: concentration of silver ions reaches 1.6g/L when above in two sections of concentrated solutions, derives these two sections of concentrated solutions to electrolyzer, carries out electrolysis treatment, and reclaims the silver obtaining in electrolytic process.
In step (1), before single filter purifies, can use the topping-up pump of 0.2～1MPa to carry out supercharging to silver-plated waste water; Before cascade filtration purifies, can use the topping-up pump of 0.5～1MPa to carry out supercharging to silver-plated waste water; The pH value of the waste water after two-stage filtration purifies reaches 4～8.
In step (1), first by sand filter and charcoal filter, the suspended substance in coarse filtration waste water, impurity, organism, then carry out essence filter with accurate filter, then with boosting pump, water is injected to circulating filtration intermediate water tank.The effect that single filter purifies is the objectionable constituent such as organism in filtering waste water, impurity, suspended substance, in order to avoid these materials enter UF ultrafiltration system, causes and shortens in obstruction, pollution and the work-ing life of cartridge filter and UF ultra-filtration equipment etc.After the water of single filter purifying treatment enters intermediate water tank, by topping-up pump, inject successively cartridge filter and UF ultra-filtration equipment, carry out cascade filtration purifying treatment, ultra-filtration membrane is a kind of porous-film with super " screening " function.Can effectively remove particulate, colloid, bacterium and macromolecule organic matter in waste water, reduce the water-quality guideline such as turbidity, COD, TOC, make reverse osmosis membrane obtain protecting more reliably.
Quartz filter in step (1) adopts quartz sand as filter core, for example, select 60 object quartz sands as filter core, and activated charcoal filter preferably adopts active fruit shell carbon as filter core.Wherein the filter opening of accurate filter, in 1～10 μ left and right, preferably adopts 5 μ accurate filters.Cartridge filter filter opening, in 1～10 μ left and right, preferably adopts 5 μ cartridge filters; UF ultra-filtration equipment can adopt 1～20nm, particularly 10nmUF ultra-filtration equipment.
In step (2), the pressure of described high-pressure pump is 2～3MPa, and the temperature of one section of reverse-osmosis treated is 5～45 ℃.One section of reverse osmosis membrane preferably adopts sw30hr-320 polyamide composite film; In one section of concentrated solution, the mass concentration of silver is 3～6 times of silver-plated waste water of raw material argentiferous.
In step (2), through the waste water of cascade filtration purifying treatment, by high-pressure pump, send into one section of reverse osmosis membrane separation, can obtain the concentrated solution of pure water and approximately 4 times.Pure water returns production line and uses, and concentrated solution enters two sections of circulating filtration water tanks.Wherein one section of reverse osmosis membrane can adopt one section of reverse osmosis membrane of 0.01～1nm, particularly 0.1nm.One section of reverse osmosis membrane can adopt polyamide composite film, for example sw30hr-320 polyamide composite film.
In step (3), the pressure of described topping-up pump is 0.5～1.5MPa, and the pressure of high-pressure pump is 3～4MPa, and the temperature of two sections of reverse-osmosis treated is 5～45 ℃, and two sections of reverse osmosis membranes preferably adopt sw30-380 polyamide composite film.
In step (3), the concentrated solution of one section of circulation generation enters after two sections of circulating filtration water tanks, then filters by cartridge filter, removes issuable particulate in circulation.After filtration, by high-pressure pump, inject two sections of reverse osmosis membrane separation concentrated, separated water is got back to one section of intercycle water tank and is participated in one section of circulation separation again, concentrated solution returns two sections of intercycle water tanks after by dense water collection tank and participates in two sections of circulations, carries out repeatedly separated concentrated.Within every 48-72 hour, more than a silver ion content of dense water collection tank collection reaches 1.6g/L, particularly 2.1g/L left and right concentrated solution, carries out electrolytic recovery.Cartridge filter filter opening in step (3), in 1～10 μ left and right, preferably adopts 5 μ; Two sections of reverse osmosis membranes preferably adopt two sections of reverse osmosis membranes of 1-2nm.Two sections of reverse osmosis membranes can adopt polyamide composite film, for example sw30-380 polyamide composite film.
In step (4), described electrolyzer adopts concentric bitubular electrode whirlwind-type electrolyzer; The power acquisition direct supply of electrolyzer; The negative electrode and positive electrode of electrolyzer adopts respectively stainless steel, titanium to make.The cathode and anode spacing of electrolyzer is controlled at 75mm～160mm; Bath voltage 1.8V～the 2.2V of electrolyzer; The current density 0.17A/dm of electrolyzer
2～0.6A/dm
2, current efficiency 70%～80%, eddy flow amount 400L/h～600L/h.In electrolytic process, be generally to add nitric acid, make nitric acid in solution reach finite concentration, as 2～10g/L, then add NaNO
3, make in electrolyzer more than the temperature of silver-containing liquid waste maintains certain temperature, carry out above electrolysis treatment as 50 ℃.
In step (4), electrolyzer adopts direct supply and electrolyzer and the equal reliable ground of power unit.In the middle of negative electrode and anode, insert a glass stick, glass stick near middle negative electrode and in electrolytic process around middle cathode rotary, with the argent that prevents from producing in electrolytic process, make the short circuit of negative and positive the two poles of the earth.In electrolyzer, concentrated solution temperature is controlled between 40-50 ℃, and the heat that temperature produces in electrolytic process maintains.Add HNO
3regulate pH value between 1.5-2.0, add a small amount of NaNO
3to increase solution conductivity.The glass stick of the argent producing in electrolytic process in rotating scrapes, and lays Polypropylene to collect argent in electrolyzer.Till electrolysis to concentration of silver ions in solution is low to moderate 20-50mg/L, every cubic metre of waste water can obtain the about 2.1kg of argent.
The invention also discloses a kind of silver-plated waste water and silver-colored system of reclaiming, this system comprises single filter purification system, cascade filtration purification system, circulation separating and recovering system, circulation concentration systems and electrolyzing and recycling system, described single filter purification system comprises connected successively topping-up pump, sand filter, activated charcoal filter and accurate filter, described cascade filtration purification system comprises connected successively topping-up pump, cartridge filter and UF ultra-filtration equipment, the outlet of described single filter purification system connects the entrance of an intermediate water tank 1, an outlet of this intermediate water tank 1 connects the entrance of described cascade filtration purification system, described circulation separating and recovering system comprises connected successively high-pressure pump and one section of reverse osmosis membrane apparatus, and the outlet of described cascade filtration purification system connects the entrance of described circulation separating and recovering system, described circulation concentration systems comprises connected successively topping-up pump, cartridge filter, high-pressure pump and two sections of reverse osmosis membrane apparatus, the outlet of described circulation separating and recovering system connects an entrance of an intermediate water tank 2, an outlet of this intermediate water tank 2 connects the entrance of described circulation concentration systems, the water outlet of two sections of reverse osmosis membrane apparatus in circulation concentration systems connects an entrance of described intermediate water tank 1, the dense water out of two sections of reverse osmosis membrane apparatus connects the entrance of an Ag-containing solution collection box, an outlet of this Ag-containing solution collection box connects an entrance of described intermediate water tank 2, another outlet of this Ag-containing solution collection box connects the entrance of described electrolyzing and recycling system.
The present invention comprehensively adopts the technology of " concentrate+electrolytic recovery of the circulation of purify+circulation of waste water filtering separating and recovering+solution ", has realized silver-plated purification of waste water, separation, reuse, silver has wherein been realized to concentrated, recovery simultaneously.The method economy of waste water recycling, the effective cost of silver recovery is low, has solved two hang-ups that silver-plated waste water circulation is processed reuse difficulty and silver recovery cost-effective rate simultaneously.The present invention reaches satisfied separation and concentrated effect by minimum device, the simplest structure for method of iterative cycles, has solved silver-plated silver in waste ion content low, the low difficulty of electrolytic recovery cost-effective rate by economic method.
Feature of the present invention is: first by concentration in electrosilvering waste liquid compared with low and be concentrated into the concentration with recovery value without the silver ions of recovery value, in this process, without any secondary pollutant, introduce, this concentration process belongs to the normal electroplating wastewater processing flow process of electroplating enterprise, without extras and man-hour, drops into.At electrolytic process described in the invention, utilize conventional equipment or the technology of using of electroplating enterprise, reduced equipment investment and operation cost.The mode of the original electrosilvering liquid waste disposal of the present invention and electroplating industry, to relatively, has the simple less investment of equipment and operation cost low, and technological process is simple, pollutes little and silver-colored withdrawal ratio high, the simple feature of liquid waste disposal after extraction argent.
Beneficial effect of the present invention:
1, the present invention adopts polyamide composite film that electrosilvering Cleaning Wastewater is made to pure water to get back to production line and recycle, adopt another kind of polyamide composite film simultaneously, by the concentrated concentrated solution obtaining with respect to 160 times of above silver contents of silver-plated Cleaning Wastewater that circulates, by electrolysis process, reclaim, this is that prior art is unapproachable again.Existing concentration technique can only obtain the concentrated solution with respect to 4 times of left and right of silver-plated Cleaning Wastewater, at such, containing being difficult in the solution of silver concentration, by economic method, reclaims wherein silver.2, the more existing three sections of membrane separation technique advantages of the present invention are:
1) cost of investment is lower, and the present invention has reduced a set of tripping device, approximately reduces more than 20% cost of investment.
2) the present invention is reaching under the prerequisite of better effect, has reduced a set of separating device, and component, device reduce, and system architecture is simpler, and reliability is higher.
3) owing to having used the combination of two sections of iterative cycles methods and electrolytic recovery method; by extremely economic method, obtain with respect to 160 times of above concentrated solutions of silver-plated Cleaning Wastewater; make the efficiency of electrolytic recovery higher; cost; solved in existing silver-plated waste water because silver-colored content is too low, reclaimed uneconomically, do not reclaimed and unfortunate dilemma; both save noble metal resource, protected again environment.
Accompanying drawing explanation
Fig. 1 is the simple and clear schematic flow sheet of the present invention;
Fig. 2 is system of the present invention and schematic flow sheet.
Embodiment
Below in conjunction with drawings and Examples, further illustrate concrete embodiment:
Embodiment 1
In the present embodiment, the silver ion content of silver-plated waste water is 10mg/L left and right, the concentrated solution silver ion content that one section of reverse osmosis membrane separation obtains is 40mg/L left and right, two sections of concentrated concentrated solution silver ion contents that obtain of reverse osmosis membrane circulation are 2.1g/L left and right, finally from concentrated solution, obtain the argent of 2g/L left and right by electrolytic recovery.The schema of realizing is shown in Fig. 1 and Fig. 2, and concrete operating method is:
The purifying treatment of silver-plated waste water: the drum pot type quartz filter that employing boosting pump (pressure of the pump that this example is selected is 0.5MPa) is 1.5T/h using the silver-plated waste water injection filtration water yield of argentiferous and charcoal filter, as the pre-filtering device of 5 μ accurate filters, enter intermediate water tank 1 by the water filtering.Intermediate water tank 1 is equipped with high-low water level liquid level meter, the startup of control pump and stopping.Impurity after purifying treatment in waste water, organism, suspended substance etc., all by filtering, when waste water enters intermediate water tank 1, must be done pH value index and detect, and reach design requirements and enter secondary circulating filtration.This routine design requirements is: pH value scope 3.5-8, actual measurement is 6, reach standard, system is by liquidometer signal enabling topping-up pump (pressure is 0.5MPa), waste water is injected to cartridge filter successively and UF ultra-filtration equipment carries out cascade filtration purifying treatment, ultra-filtration membrane is a kind of porous-film with super " screening " separation function.It can effectively remove particulate, colloid, bacterium and macromolecule organic matter in waste water, reaches the effect of protection reverse osmosis membrane.
Circulation separating and recovering: it is separated that the waste water purifying through cascade filtration is sent into one section of reverse osmosis membrane circulation by the high-pressure pump of 3.0MPa.This routine choice for use sw30hr-320 polyamide composite film, its significant parameter is: pH value scope 3-10, the highest working pressure 4MPa, permeate 1.2T/H, ratio of desalinization 99.6%, service temperature is below 45 ℃, produces one section of concentrated solution that specific conductivity is less than the pure water of 15 μ S and approximately 4 times.Pure water returns production line and uses, and concentrated solution is separated through two-segment film, and the water of generation is got back to intermediate water tank 1 and participated in circulation separation again.
Two sections of circulations are separated: one section of separated concentrated solution producing of circulation enters after intermediate water tank 2, and the topping-up pump that is 1.0MPa by pressure is sent into the cartridge filter that 5 μ filter cores are housed, and removes issuable particulate in circulation, not blocked to guarantee separatory membrane.High-pressure pump with 3.5MPa after filtering is injected two sections of reverse osmosis membrane separation, two sections of reverse osmosis membranes adopt sw30-380 polyamide composite film, its significant parameter is: pH value scope 3-10, the highest working pressure 4MPa, permeate 1.6T/H, ratio of desalinization 99.2%, service temperature is below 45 ℃, and the fresh water of generation is got back to intermediate water tank 1 and is participated in follow-up cascade filtration purifying treatment again; Concentrated solution by dense water collection tank (being Ag-containing solution collection box) after after entering intermediate water tank 2 and mixing with one section of concentrated solution again by cartridge filter and two sections of reverse osmosis membranes, carry out two sections of reverse osmosis concentration circular treatment.
The electrolytic recovery of silver: when concentration of silver ions reaches 2.1g/L left and right in two sections of concentrated solutions, derive these two sections of concentrated solutions to electrolyzer, carry out electrolysis treatment.Electrolyzer is concentric bitubular electrode whirlwind-type, and electrolyzer adopts stainless steel cathode, titanium anode.In the middle of negative electrode and anode, insert a glass stick, glass stick apart from middle negative electrode 20mm and in electrolytic process with the speed of per minute 10 circles around cathode rotary.In the bottom of electrolyzer, lay the argent of Polypropylene to be scraped by glass stick in collecting electrolytic process.Electrolysis adopts direct supply and electrolyzer and the equal reliable ground of power unit.Add nitric acid, make concentration of nitric acid in solution reach 6g/L, according to every liter of solution, add commercially available concentrated nitric acid 8-10g meter.In solution, according to 1g/L, add NaNO
3.In electrolyzer, the temperature of silver-containing liquid waste maintains more than 50 ℃, and the heat that this temperature produces in electrolytic process maintains.Voltage in electrolyzer between negative and positive two electrodes is 2.0V, and interelectrode distance is 100mm; Current density 0.3A/dm
2, eddy flow amount is 500L/h.Energising electrolysis time is 2.5h.After electrolysis finishes, (interval of electrolysis) taking-up Polypropylene, takes off the argent on cloth.
Claims (9)
1. reclaim silver-plated waste water and a silver-colored method, it is characterized in that it comprises the steps:
(1) purifying treatment of silver-plated waste water: the silver-plated waste water of raw material argentiferous is carried out to two-stage filtration purification, wherein single filter purifies and by sand filter, activated charcoal filter and accurate filter, completes successively, and cascade filtration purifies and by cartridge filter and UF ultra-filtration equipment, completes successively;
(2) circulation separating and recovering: after two-stage filtration purifies, waste water carries out one section of reverse osmosis isolation through one section of reverse osmosis membrane of high-pressure pump injection, obtains respectively pure water and one section of concentrated solution; Described one section of reverse osmosis membrane adopts polyamide composite film;
(3) circulation of Ag-containing solution is concentrated: described one section of concentrated solution is sent into cartridge filter by topping-up pump and filtered, and then through high-pressure pump, delivers to two sections of reverse osmosis membranes and carries out two sections of reverse osmosis concentration processing, obtains respectively fresh water and two sections of concentrated solutions; The fresh water wherein obtaining mixes with the waste water purifying through single filter in step (1), carries out follow-up cascade filtration purifying treatment; After mixing with described one section of concentrated solution, two sections of concentrated solutions that obtain again by cartridge filter and two sections of reverse osmosis membranes, carry out two sections of reverse osmosis concentration circular treatment; Described two sections of reverse osmosis membranes adopt polyamide composite film;
(4) electrolytic recovery of silver: concentration of silver ions reaches 1.6g/L when above in two sections of concentrated solutions, derives these two sections of concentrated solutions to electrolyzer, carries out electrolysis treatment, and reclaims the silver obtaining in electrolytic process.
2. the silver-plated waste water of recovery according to claim 1 and silver-colored method, is characterized in that in step (1), before single filter purifies, uses the topping-up pump of 0.2～1MPa to carry out supercharging to silver-plated waste water; Before cascade filtration purifies, use the topping-up pump of 0.5～1MPa to carry out supercharging to silver-plated waste water; The pH value of the waste water after two-stage filtration purifies reaches 4～8.
3. the silver-plated waste water of recovery according to claim 1 and silver-colored method, is characterized in that, in step (2), the pressure of described high-pressure pump is 2～3MPa, and the temperature of one section of reverse-osmosis treated is 5～45 ℃.
4. the silver-plated waste water of recovery according to claim 1 and silver-colored method, is characterized in that in step (2), and one section of reverse osmosis membrane adopts sw30hr-320 polyamide composite film; In one section of concentrated solution, the mass concentration of silver is 3～6 times of silver-plated waste water of raw material argentiferous.
5. the silver-plated waste water of recovery according to claim 1 and silver-colored method, is characterized in that, in step (3), the pressure of described topping-up pump is 0.5～1.5MPa, and the pressure of high-pressure pump is 3～4MPa, and the temperature of two sections of reverse-osmosis treated is 5～45 ℃.
6. the silver-plated waste water of recovery according to claim 1 and silver-colored method, is characterized in that in step (3), and described two sections of reverse osmosis membranes adopt sw30-380 polyamide composite film.
7. the silver-plated waste water of recovery according to claim 1 and silver-colored method, is characterized in that in step (4), and described electrolyzer adopts concentric bitubular electrode whirlwind-type electrolyzer; The power acquisition direct supply of electrolyzer; The negative electrode and positive electrode of electrolyzer adopts respectively stainless steel, titanium to make.
8. according to the silver-plated waste water of the recovery described in claim 1 or 7 and silver-colored method, it is characterized in that, in step (4), the cathode and anode spacing of electrolyzer is controlled at 75mm～160mm; Bath voltage 1.8V～the 2.2V of electrolyzer; The current density 0.17A/dm of electrolyzer
2～0.6A/dm
2, current efficiency 70%～80%, eddy flow amount 400L/h～600L/h.
9. one kind is reclaimed silver-plated waste water and silver-colored system, it is characterized in that this system comprises single filter purification system, cascade filtration purification system, circulation separating and recovering system, circulation concentration systems and electrolyzing and recycling system, described single filter purification system comprises connected successively topping-up pump, sand filter, activated charcoal filter and accurate filter, described cascade filtration purification system comprises connected successively topping-up pump, cartridge filter and UF ultra-filtration equipment, the outlet of described single filter purification system connects the entrance of an intermediate water tank 1, an outlet of this intermediate water tank 1 connects the entrance of described cascade filtration purification system, described circulation separating and recovering system comprises connected successively high-pressure pump and one section of reverse osmosis membrane apparatus, and the outlet of described cascade filtration purification system connects the entrance of described circulation separating and recovering system, described circulation concentration systems comprises connected successively topping-up pump, cartridge filter, high-pressure pump and two sections of reverse osmosis membrane apparatus, the outlet of described circulation separating and recovering system connects an entrance of an intermediate water tank 2, an outlet of this intermediate water tank 2 connects the entrance of described circulation concentration systems, the water outlet of two sections of reverse osmosis membrane apparatus in circulation concentration systems connects an entrance of described intermediate water tank 1, the dense water out of two sections of reverse osmosis membrane apparatus connects the entrance of an Ag-containing solution collection box, an outlet of this Ag-containing solution collection box connects an entrance of described intermediate water tank 2, another outlet of this Ag-containing solution collection box connects the entrance of described electrolyzing and recycling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310466158.3A CN103539294B (en) | 2013-10-08 | 2013-10-08 | Reclaim the method for silver-plated waste water and silver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310466158.3A CN103539294B (en) | 2013-10-08 | 2013-10-08 | Reclaim the method for silver-plated waste water and silver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103539294A true CN103539294A (en) | 2014-01-29 |
| CN103539294B CN103539294B (en) | 2015-07-29 |
Family
ID=49963215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310466158.3A Active CN103539294B (en) | 2013-10-08 | 2013-10-08 | Reclaim the method for silver-plated waste water and silver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103539294B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871535A (en) * | 2014-02-25 | 2014-06-18 | 中国核电工程有限公司 | Reverse osmosis boron concentrating device for nuclear power plant chemical waste liquid treatment system |
| CN103871534A (en) * | 2014-02-25 | 2014-06-18 | 中国核电工程有限公司 | Membrane treatment system for treating nuclear power plant chemical waste liquid |
| CN105274567A (en) * | 2014-05-27 | 2016-01-27 | 中色金银贸易中心有限公司 | Production process of high purity silver by high frequency electrolysis |
| CN105366838A (en) * | 2014-12-25 | 2016-03-02 | 南京源泉环保科技股份有限公司 | Zero-discharge treatment method for trivalent chromium passivation wastewater |
| CN105858987A (en) * | 2016-06-08 | 2016-08-17 | 南京霖厚环保科技有限公司 | Recycling treatment process for recovering pure water and pure nickel from electro-nickelling rinsing wastewater |
| CN108251886A (en) * | 2016-12-28 | 2018-07-06 | 南京源泉环保科技股份有限公司 | A kind of online reuse method of nickel plating with impurity removal function |
| CN109516599A (en) * | 2018-12-19 | 2019-03-26 | 河北德龙环境工程股份有限公司 | The polymorphic silver separation sub-prime device of one kind and sewage water treatment method |
| CN110563215A (en) * | 2019-08-12 | 2019-12-13 | 苏州环职安环境工程技术有限公司 | Online recovery process for electroplating waste liquid |
| CN112591941A (en) * | 2020-12-29 | 2021-04-02 | 上海丰信环保科技有限公司 | Advanced treatment method for low-concentration silver-containing cleaning wastewater in circuit board industry |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325265A (en) * | 1976-08-23 | 1978-03-08 | Nippon Abukoo Kk | Method of treating solution containing metal ions by using combined superr filter membrane and reverse osmosis membrane |
| US6162361A (en) * | 1996-02-14 | 2000-12-19 | Adiga; Mahabala R. | Plating waste water treatment and metals recovery system |
| CN201381376Y (en) * | 2009-04-27 | 2010-01-13 | 沈德华 | Complete plant used for recovering metal ion in electroplating cleaning liquid |
| CN101786734A (en) * | 2009-09-08 | 2010-07-28 | 刘春喜 | Process for treating acid waste water containing copper, nickel and the like by membrane method |
| CN201762202U (en) * | 2010-08-03 | 2011-03-16 | 长春欧地安电磁安防产业有限公司 | Electroplating purified water treatment device |
| CN102010036A (en) * | 2010-12-04 | 2011-04-13 | 金川集团有限公司 | Treatment method of waste silver electrolyte |
| CN102070259A (en) * | 2010-12-10 | 2011-05-25 | 苏州海创电子有限公司 | Method and device for processing and recycling nickel plating waste water |
| CN202912799U (en) * | 2012-10-09 | 2013-05-01 | 苏州卓融水处理科技有限公司 | Comprehensive recycling system of metal plating wastewater resources |
-
2013
- 2013-10-08 CN CN201310466158.3A patent/CN103539294B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325265A (en) * | 1976-08-23 | 1978-03-08 | Nippon Abukoo Kk | Method of treating solution containing metal ions by using combined superr filter membrane and reverse osmosis membrane |
| US6162361A (en) * | 1996-02-14 | 2000-12-19 | Adiga; Mahabala R. | Plating waste water treatment and metals recovery system |
| CN201381376Y (en) * | 2009-04-27 | 2010-01-13 | 沈德华 | Complete plant used for recovering metal ion in electroplating cleaning liquid |
| CN101786734A (en) * | 2009-09-08 | 2010-07-28 | 刘春喜 | Process for treating acid waste water containing copper, nickel and the like by membrane method |
| CN201762202U (en) * | 2010-08-03 | 2011-03-16 | 长春欧地安电磁安防产业有限公司 | Electroplating purified water treatment device |
| CN102010036A (en) * | 2010-12-04 | 2011-04-13 | 金川集团有限公司 | Treatment method of waste silver electrolyte |
| CN102070259A (en) * | 2010-12-10 | 2011-05-25 | 苏州海创电子有限公司 | Method and device for processing and recycling nickel plating waste water |
| CN202912799U (en) * | 2012-10-09 | 2013-05-01 | 苏州卓融水处理科技有限公司 | Comprehensive recycling system of metal plating wastewater resources |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871534B (en) * | 2014-02-25 | 2016-08-17 | 中国核电工程有限公司 | A kind of film processing system for processing nuclear power station chemical waste fluid |
| CN103871534A (en) * | 2014-02-25 | 2014-06-18 | 中国核电工程有限公司 | Membrane treatment system for treating nuclear power plant chemical waste liquid |
| CN103871535A (en) * | 2014-02-25 | 2014-06-18 | 中国核电工程有限公司 | Reverse osmosis boron concentrating device for nuclear power plant chemical waste liquid treatment system |
| CN103871535B (en) * | 2014-02-25 | 2016-08-31 | 中国核电工程有限公司 | A kind of reverse osmosis boron enrichment facility for liquid waste treatment system of nuclear power plant |
| CN105274567B (en) * | 2014-05-27 | 2018-07-10 | 方超 | The production technology of high-frequency electrolysis high-purity silver |
| CN105274567A (en) * | 2014-05-27 | 2016-01-27 | 中色金银贸易中心有限公司 | Production process of high purity silver by high frequency electrolysis |
| CN105366838A (en) * | 2014-12-25 | 2016-03-02 | 南京源泉环保科技股份有限公司 | Zero-discharge treatment method for trivalent chromium passivation wastewater |
| CN105858987A (en) * | 2016-06-08 | 2016-08-17 | 南京霖厚环保科技有限公司 | Recycling treatment process for recovering pure water and pure nickel from electro-nickelling rinsing wastewater |
| CN105858987B (en) * | 2016-06-08 | 2018-04-03 | 南京霖厚环保科技有限公司 | The recycling treatment process of pure water pure nickel is reclaimed from electronickelling poaching wastewater |
| CN108251886A (en) * | 2016-12-28 | 2018-07-06 | 南京源泉环保科技股份有限公司 | A kind of online reuse method of nickel plating with impurity removal function |
| CN109516599A (en) * | 2018-12-19 | 2019-03-26 | 河北德龙环境工程股份有限公司 | The polymorphic silver separation sub-prime device of one kind and sewage water treatment method |
| CN110563215A (en) * | 2019-08-12 | 2019-12-13 | 苏州环职安环境工程技术有限公司 | Online recovery process for electroplating waste liquid |
| CN112591941A (en) * | 2020-12-29 | 2021-04-02 | 上海丰信环保科技有限公司 | Advanced treatment method for low-concentration silver-containing cleaning wastewater in circuit board industry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103539294B (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103539294B (en) | Reclaim the method for silver-plated waste water and silver | |
| CN104445788B (en) | High slat-containing wastewater treatment for reuse zero-emission integrated technique | |
| CN101891323B (en) | Method for classifying, treating and recycling plating washing water on line | |
| CN104478045B (en) | A kind of efficient electric Dialytic desalination apparatus for coking chemical waste water and method | |
| CN103073123B (en) | Metal plating wastewater recycle using and recycling technology process | |
| CN202912799U (en) | Comprehensive recycling system of metal plating wastewater resources | |
| CN100545323C (en) | Reclaim the method for cupric ion in the copper plating cleaning fluid | |
| CN106587472B (en) | A kind of recycling recoverying and utilizing method of the electroplating wastewater containing palladium | |
| CN104944709A (en) | Electroplating wastewater zero-discharge treatment method and system | |
| CN101402496A (en) | Clean production process for treating electroplating poaching water with nona-filtering method | |
| CN105366838A (en) | Zero-discharge treatment method for trivalent chromium passivation wastewater | |
| CN106396221A (en) | Zero-discharge treatment method for complexing-type electroplating sewage | |
| CN112607926A (en) | Sodium nitrate wastewater recycling treatment system and method | |
| CN203922886U (en) | Three grades of reverse osmosis treatment systems of a kind of nickel-containing waste water | |
| CN201610402U (en) | Recycling and deep treatment device for electronic electroplating wastewater | |
| CN203602414U (en) | System for recovering silvering wastewater and silver | |
| CN205347081U (en) | Cyanogen chemical plating cadmium waste water zero release processing system | |
| CN102874981B (en) | Zero emission online circulation treatment system for electroplated nickel containing waste water | |
| CN108328836B (en) | Water inlet control system based on high-salt-content wastewater reduction process | |
| CN104071925A (en) | Zero-drainage treatment system and zero-drainage treatment method for nickel plating wastewater in steel workshop | |
| CN204384985U (en) | A kind of zero-discharge treatment system of nickel-plating waste water of iron and steel workshop | |
| CN104291501B (en) | A kind of Integrated Membrane Technology processes the method for ammonium nitrate wastewater | |
| CN104310673A (en) | Method for physically treating complexing metal ion wastewater | |
| CN103112970A (en) | Heavy metal recovery and zero emission system and process | |
| CN112850948A (en) | Electroplating wastewater treatment method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Reclaim silver-plated waste water and silver-colored method Effective date of registration: 20170922 Granted publication date: 20150729 Pledgee: Bank of Nanjing, Zhujiang branch, Limited by Share Ltd Pledgor: Nanjing Spring Environmental Science & Technology Co., Ltd. Registration number: 2017990000898 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |