CN103058290A - Water purifying method for intercepting microfaunas through microporous filtering - Google Patents
Water purifying method for intercepting microfaunas through microporous filtering Download PDFInfo
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- CN103058290A CN103058290A CN2012105875138A CN201210587513A CN103058290A CN 103058290 A CN103058290 A CN 103058290A CN 2012105875138 A CN2012105875138 A CN 2012105875138A CN 201210587513 A CN201210587513 A CN 201210587513A CN 103058290 A CN103058290 A CN 103058290A
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Abstract
The invention relates to the technical field of water treatment of environmental protection, in particular to a water purifying method for intercepting microfaunas through microporous filtering. The invention provides the water purifying method for intercepting the microfaunas through microporous filtering; and the microfaunas with various sizes in a water body are intercepted by using a microporous filtering core of 5-10 microns under a condition without outside pressure so as to prevent microfauna leakage. The water purifying method for intercepting the microfaunas through the microporous filtering, provided by the invention, is particularly suitable for water plants adopting an ozone-biological activated carbon deep purification technology and a conventional sand filtration process so as to reduce leakage risk of the microfaunas and improve the water quality, and is also suitable for intercepting and removing of the microfaunas in the reclaimed water recycling or sludge water recycling process. The water purifying method for intercepting the microfaunas through the microporous filtering, provided by the invention, has the advantages of simple and feasible operation method, better intercepting effect and strong operability.
Description
Technical field
The present invention relates to the water-treatment technology field of environment protection, relate in particular to the process for purifying water that microfauna is held back in a kind of millipore filtration.
Background technology
Along with improving constantly of the continuous enhancing of increasingly sharpening of polluting of drinking water source and resident's environmental consciousness, standard of living, it will be more and more high also that water quality standard for drinking water requires, conventional flocculation, precipitation, transition, javellization technique has been difficult to satisfy playing that water quality improves constantly and has asked, Advanced Treatment of Drinking Water gets more and more people's extensive concerning, to the advanced treatment technical study be applied in China and presented flourish form.
The ozone biological activated carbon is quoted method for deeply treating water and is integrated ozone oxidation, charcoal absorption and biological degradation, become in recent years the water quality water-deficient area and improve the core clean unit of water supply quality, but this technique easily causes microfauna at the Second propagation of activated carbon filter, increases burden and the biological risk of tap water of follow-up sterilization process.Drink water purifying process microfauna mainly comprises the invertebratess such as chironomus larvas, oligochaetes, Magna class, wheel animalcule and nematode.
The penetrance of these microfaunas is stronger, sometimes even can penetrate whole water-purifying process and enter water supply network, causes that not only user's sense organ is uncomfortable, and some microfauna also has pathogenic, as infecting urinary system without first chamber wheel animalcule; Hemochrome in the chironomus larvas body can cause the symptoms such as allergic asthma and rhinitis, nematode can provide protection for bacteriophage of vivo carrying etc., because the structure of microfauna is than complexity such as bacteriums, body surface has stratum corneum, the dosage that adds for the ultraviolet of water factory's routine of deactivation bacterium design and chlorine disinfectant technique can't the complete inactivation microfauna, so microfauna has consisted of the potential safety hazard of tap water.
Although it is not existing quartz sand filtration can be alleviated the microfauna risk of leakage to a certain extent, good for the microfauna rejection effect that penetration power is strong; Micro-filtration or ultrafiltration membrance filter need under stress carry out, and investment and running cost are high, use difficulty large.
Summary of the invention
The shortcoming of prior art the object of the present invention is to provide a kind of millipore filtration to hold back the process for purifying water of microfauna in view of the above, is used for solving the problems of the prior art.The contriver is through the research discovery, and the aperture is that the micro-strainer of 5 μ m-10 μ m can have good rejection effect to various microfaunas, and can with no pressure move, and is to hold back the important means of filtering microfauna.
The present invention holds back the filter method of microfauna as a kind of novel millipore filtration, adopted novel micropore filter material, the effect of invention is positive and obvious, can effectively solve the microfauna leakage problem such as places such as waterworkss, has very strong practicality.This microporous filter can be realized the self-pressure operation, and is simple to operate, and dependable performance can be widely used in the microfauna control in the places such as waterworks.
Reach for achieving the above object other relevant purposes, first aspect present invention provides a kind of millipore filtration to hold back the process for purifying water of microfauna, comprise filter progress, described filter progress refers to utilize micropore filter element to hold back microfauna in the water body, and the micro-pore diameter on the described micropore filter element is 5-10 μ m.
Preferably, described micropore filter element is the column construction of hollow, and water body imports the hollow space of column construction, flows out from inside to outside micropore filter element.
Preferably, described water body flows out micropore filter element from inside to outside by self gravitation mode or low pressure filter type.
Preferably, described micropore filter element is the cylindrical structural of hollow, and hole area accounts for the 72-83% of the sidewall total area.
Preferably, when described water body imports, by under meter and valve controlled filter speed.
Preferably, described filter core outside is provided with sleeve.
Preferably, the material of described micropore filter element and sleeve is stainless steel, inorganic materials or organic materials.
Preferably, also be provided with the back flushing operation behind the described filter progress, described back flushing operation refers to backwashing water from flowing into outside to inside micropore filter element.
Preferably, during described back flushing operation, scrub simultaneously the micropore filter element inwall.
The switching of filter progress of the present invention and back flushing operation realizes by pressure transmitter.The present invention is provided with pressure transmitter in water inlet place, when cell pressure is excessive, namely enters the back flushing operation.
Described millipore filtration system comprises filters and automatically cleans the twice program.During filtration, water inlet successively by valve, under meter by entered the filter element filtering component internal by filter top, traditional filter core from inside to outside, microfauna and impurity in the water are all held back by filter core, water is discharged by the water outlet of strainer sleeve bottom after the filter.The automatic cleaning of system is finished by the rotation of the cleaning motor control filter core internal cleaning brush of filter top, strainer stops the top water inlet, rinse water is entered by the water outlet of filter bottom, ecto-entad passes filter core, discharges (can extract out from the top by device) from the discharge outlet of filter top; Simultaneously cleaning motor control cleaning brush main shaft rotates, and the bristle of main shaft both sides is constantly scrubbed the filter core inwall, and the impurity of wash-out is discharged with the current overflow.
Second aspect present invention provides the application in the water body purification field of method that described millipore filtration purifies water.
Third aspect present invention provides a kind of millipore filtration water purification apparatus, the method of using described millipore filtration to purify water purifies water, it is characterized in that, comprise micropore filter element, described micropore filter element is the column construction of upper opened type hollow, and the bottom of described micropore filter element is provided with base, also is provided with suction culvert, described suction culvert communicates with the hollow space of described column construction, and the hole area of described micropore filter element accounts for the 72-83% of the sidewall total area.
Preferably, the micro-pore diameter on the described micropore filter element is 5-10 μ m.
Preferred, described micropore filter element is the cylindrical structural of hollow.
Preferably, the material of described micropore filter element is stainless steel or other material.
Preferably, the water side of described suction culvert is positioned at the top of the column construction of described hollow, described suction culvert upward pressure sensor and under meter.
Preferred, described suction culvert is provided with the first valve.
Under meter water inlet place is provided with valve regulated flooding quantity and filtration velocity; Whether whether the strainer feed-water end is established pressure transmitter, is used for the pressure change of Real-Time Monitoring micropore filter element, stop up to judge filter core, need to clean.
Preferably, also be provided with filter housing on the described base, described filter housing is the column construction of hollow, and described micropore filter element is positioned at described filter housing, and described filter housing bottom is provided with outlet pipeline.
Preferably, described micropore filter element and described filter housing are concentric hollow cylindrical structure, and the surface-area of described micropore filter element is by processing the water yield and required filtering velocity is determined, filter core diameter and be about at high proportion 1:5-10.The diameter of described filter housing is about 2 times of filter core diameter, and is high identical with the filter core height.
Preferred, described outlet pipeline is provided with the second valve.
Preferably, also comprise the cover plate that covers described filter housing top and micropore filter element top.
Preferred, be provided with packing ring between described cover plate and the filter housing top, and be bolted between cover plate and the filter housing top.Packing ring works to keep stopping property.
Preferably, be provided with the filter core bracing frame between described micropore filter element and the base.
Preferably, described filter housing bottom also is provided with backflushing pipe, also comprise cleaning brush and cleaning motor, the brush body of described cleaning brush is arranged in the hollow structure of described micropore filter element, the main shaft of described cleaning brush extends upward cover plate and links to each other with described cleaning motor, described cleaning motor is positioned at described cover plate upper surface, also comprises discharge pipe, and described discharge pipe communicates with the hollow space of described column construction.
The main shaft of described cleaning brush can drive the brush body rotation, and clears up the inwall of described micropore filter element.
Preferably, described backflushing pipe is provided with the 4th valve.
Preferably, the brush body of described cleaning brush runs through the hollow structure of described micropore filter element from top to bottom, and the position of micropore is corresponding on the position of described brush body and the described micropore filter element.
Preferably, described discharge pipe is provided with the 3rd valve.
Preferably, backflushing pipe and the outlet pipeline bottom the described filter housing merged into a pipeline.
Because the aperture of micropore filter element is little, the impurity that conventional hydraulic reverse flushing is difficult to adhere on the filter core cleans up, and therefore automatic cleaning motor and cleaning brush are set, and when needing to clean, drives the adhesion that cleaning brush rotates cleaning filter core inwall by cleaning motor; During normal filtration, cleaning brush keeps stationary state.
Preferably, described discharge pipe is positioned at the spindle rod of described cleaning brush, and filter core bottom is close in the discharge pipe lower end, and the discharge pipe upper end is stretched out with outside water pump by the spindle top of cleaning brush and linked to each other, and when cleaning filter core, the sewage of cleaning is by pump suction discharge.
The process for purifying water workflow of described millipore filtration interception microfauna is as follows: during filtration, water inlet enters micropore filter element inside by the water inlet pipe of under meter, strainer, flow out from inside to outside micropore filter element, impurity and microfauna in the water are held back by filter core, water is collected by sleeve after the filter, then the water outlet by the sleeve bottom flows out, and the water-in of strainer is established pressure transmitter indication running status.When filter core begins to start when obstruction, pressure increase or microfauna filtration efficiency reduce automatic wash procedure.During cleaning, wash-down water oppositely flows into sleeve by the strainer water outlet, passes element wall by the outer survey of filter core and enters filter assemblies inside, and the impurity that sticks on the filter core inwall is taken out of; Meanwhile cleaning motor control cleaning brush rotates, and thoroughly removes filter core inside and adheres to tighter impurity, and rinse water is discharged by the filter top overflow, the water-in that will close microporous filter top during cleaning.
The process for purifying water of millipore filtration interception microfauna provided by the present invention, although the diameter of microfauna is mostly more than 10 μ m, but its motor capacity and flexible ability are strong, repeatedly adopt the micro-strainer of 5 μ m-10 μ m just can reach preferably rejection effect after the experiment, therefore utilize various microfaunas in the micropore filter element trap water of 5 μ m-10 μ m, its operation does not need impressed pressure, can self-pressure operation under the run by gravity condition, investment and running cost are lower, apply being easier to.
The water factory that the process for purifying water of millipore filtration interception microfauna of the present invention is specially adapted to adopt ozone biological activated carbon advanced treatment and conventional sand filtration technique, to reduce the risk of leakage of microfauna, increase water quality, also be applicable to the removal of holding back of microfauna in middle water reuse or the spoil disposal water reuse process.Working method is simple, and rejection effect is better, and is workable.
Description of drawings
Fig. 1 is shown as structural representation of the present invention.
The element numbers explanation
1 filter housing
2 washing units
3 suction culverts
11 bases
12 filter core bracing frames
13 outlet pipelines
14 micropore filter elements
16 under meters
17 cover plates
18 bolts
19 pressure transmitters
21 cleaning motor
22 discharge pipes
23 cleaning brush
24 backflushing pipes
1 10 packing rings
Embodiment
Below by specific specific examples explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification sheets.The present invention can also be implemented or be used by other different embodiment, and the every details in this specification sheets also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
Notice, the not concrete processing unit that indicates or device all adopt conventional equipment or the device in this area in the following example; All force value and scope all refer to absolute pressure.
Should be understood that in addition that one or more method stepss of mentioning among the present invention do not repel before and after described combination step can also exist the additive method step or can also insert the additive method step between these steps of clearly mentioning, except as otherwise noted; Will also be understood that, the relation of being connected between one or more equipment of mentioning among the present invention/device is not repelled before and after described clustered aggregates/device and can also be had other equipment/devices or can also insert other equipment/devices between these two equipment/devices clearly mentioning, except as otherwise noted.And, except as otherwise noted, the numbering of various method steps is only for differentiating the convenient tool of various method steps, but not ordering or the enforceable scope of restriction the present invention for limiting various method steps, the change of its relativeness or adjustment, in the situation that without essence change technology contents, when also being considered as the enforceable category of the present invention.
As shown in Figure 1, a kind of millipore filtration water purification apparatus, comprise micropore filter element 14, described micropore filter element 14 is the cylindrical structural of upper opened type hollow, the bottom of described micropore filter element 14 is provided with base 11, be provided with filter core bracing frame 12 between described micropore filter element 14 and the base 11, also be provided with suction culvert 3, described suction culvert 3 communicates with the hollow space of described column construction, micro-pore diameter on the described micropore filter element 14 is 5-10 μ m, hole area accounts for 80% of the sidewall total area, the material of described micropore filter element 14 is stainless steel, the water side of described suction culvert 3 is positioned at the top of the column construction of described hollow, described suction culvert 3 upward pressure sensors 19, under meter 16 and the first valve also are provided with filter housing 1 on the described base 11, described filter housing 1 is the cylindrical structural of hollow, described micropore filter element 14 is positioned at described filter housing 1, and described filter housing 1 bottom is provided with outlet pipeline 13, and described outlet pipeline 13 is provided with the second valve.Described micropore filter element 14 and described filter housing 1 are the cylindrical structural of concentric hollow, and the surface-area of described micropore filter element 14 is by processing the water yield and required filtering velocity is determined, filter core diameter and be about at high proportion 1:5-10.The diameter of described filter housing is about 2 times of filter core diameter, and is high identical with the filter core height.Micropore filter element 14 also comprises the cover plate 17 that covers described filter housing 1 top and micropore filter element 14 tops, be provided with packing ring 110 between described cover plate 17 and filter housing 1 top, and fixing by bolt 18 between cover plate 17 and filter housing 1 top, described filter housing 1 bottom also is provided with backflushing pipe 24, described backflushing pipe 24 is provided with the 4th valve, and backflushing pipe 24 and the outlet pipeline 13 of described filter housing 1 bottom are merged into a pipeline.Also comprise cleaning brush 23 and cleaning motor 21, the brush body of described cleaning brush 23 is arranged in the hollow structure of described micropore filter element 14, the main shaft of described cleaning brush 23 extends upward cover plate 17 and links to each other with described cleaning motor 21, described cleaning motor 21 is positioned at described cover plate 17 upper surfaces, also comprise discharge pipe 22, described discharge pipe 22 communicates with the hollow space of described column construction.The brush body of described cleaning brush 23 runs through the hollow structure of described micropore filter element 14 from top to bottom, and the position of micropore is corresponding on the position of described brush body and the described micropore filter element 14, and described discharge pipe 22 is provided with the 3rd valve.Described discharge pipe 22 is positioned at the spindle rod of described cleaning brush 23, micropore filter element 14 bottoms are close in discharge pipe 22 lower ends, discharge pipe 22 upper ends are stretched out with outside water pump by the spindle top of cleaning brush 23 and are linked to each other, and when cleaning filter core, the sewage of cleaning is discharged by the pump suction.
Under meter 16 cooperates the first valve can regulate flooding quantity and filtration velocity; Whether whether pressure transmitter 19 is used for the pressure change of Real-Time Monitoring micropore filter element 14, stop up to judge filter core, need to clean.
Described washing unit 2 mainly comprises cleaning motor 21, discharge pipe 22, cleaning brush 23 and backflushing pipe 24.
The main shaft of described cleaning brush 23 can drive the brush body rotation, and clears up the inwall of described micropore filter element 14.
Because the aperture of micropore filter element is little, the impurity that conventional hydraulic reverse flushing is difficult to adhere on the filter core cleans up, and therefore automatic cleaning motor and cleaning brush are set, and when needing to clean, drives the adhesion that cleaning brush rotates cleaning filter core inwall by cleaning motor; During normal filtration, cleaning brush keeps stationary state.When the microfauna of the increase of millipore filter pressure or filtrate is held back Efficiency Decreasing, system changes the back flushing state over to, outlet pipeline 13 during filtration becomes the backflushing pipe 24 of rinse water, and the wash-down water ecto-entad passes micropore filter element, is then flowed out by millipore filter top discharge pipeline 22.In the cleaning process, drive cleaning brush 23 by cleaning motor 21 and rotate, cleaning brush 23 is forced wash-out with the impurity on micropore filter element 14 inwalls.
The process for purifying water of millipore filtration interception microfauna of the present invention, adopting the aperture is the filter core of 5-10 μ m, relies on run by gravity to filter microfauna in the trap water, thereby purify water, and can clean filter core by automatic cleaning brush, comprise filtration, cleaning and rinse water efflux, and its concrete steps are as follows:
During filtration, water inlet arrives the water-in at micropore filter element 14 tops by the first valve, under meter 16 and pressure transmitter 19, enter micropore filter element 14 inside, flow out from inside to outside filter core, impurity and microfauna in the water are held back by filter core, and the filter core water outlet is flowed out by the outlet pipeline 13 of millipore filter side bottom.Suction culvert 3 is provided with pressure transmitter 19, can judge whether filter core stops up maybe needs cleaning according to pressure change.During filter element cleaning, wash-down water enters millipore filter by rinse water backflushing pipe 24, and by micropore filter element 14 sidewall endosmosises, cleaning motor 21 control cleaning brush 23 rotate simultaneously, cleaning brush 23 can adhere to filter core inside tighter impurity to be brushed, and final rinse water flows out from discharge pipe 22.
Described automatic cleaning mainly relies on cleaning brush.The water inlet of back flushing is entered in the sleeve by the water outlet of filter bottom, then ecto-entad passes the effect that filter core plays preliminary cleaning, the cleaning brush of filter core inboard is comprised of the bristle of two stagger arrangement, two bristles are fixed on the cleaning brush main shaft, main shaft is by the cleanser control rotation of strainer outside, main shaft rotarily drives bristle and scrubs the filter core inwall, plays the effect that deep layer is cleaned.
Embodiment 1
The process for purifying water of millipore filtration interception microfauna and the comparison of the process for purifying water that quartz sand filtration is held back microfauna:
Adopt above-mentioned millipore filtration water purification apparatus and the water outlet of certain water factory's ozone biological carbon filter is filtered, the quartz sand layer that increases simultaneously 40cm, 0.6 ~ 0.9mm behind the activated carbon pond filters, and compares the rejection effect that millipore filtration and fine quartz sand filter under the operational conditions of intaking continuously.The quantity of microfauna is 630～2650/m of wheel animalcule in the water inlet
3, nematode 30-500/m
3, crustaceans 80-240/m
3, oligochaetes is 50-350/m
3
Comparative result:
Under the Continuous Flow condition, the millipore filtration water purification apparatus of 10 μ m micropore filter elements reaches 100% to the rejection of crustaceans microfauna; The rejection of wheel animalcule is kept between 81.5%～99.5%, and the rejection of oligochaetes microfauna is 81.5%～100%, is 33.7%～84.4% to the rejection of nematode.
The millipore filtration water purification apparatus of 5 μ m micropore filter elements reaches 100% to the rejection of crustaceans microfauna; The rejection of wheel animalcule is kept between 85%～100%, and the rejection of oligochaetes microfauna is 85%～100%, is 53.8%～90.5% to the rejection of nematode.
Quartz sand filter remains on 46%～75% to the rejection of crustaceans microfauna; Rejection to wheel animalcule maintains between 33～68%, is 35%～63% to the rejection of oligochaetes microfauna; Sand filtration does not have rejection effect to nematode.
As seen, micropore filter element all is much better than the fine quartz sand filtration to the rejection effect of all kinds of microfaunas, and the risk that microfauna penetrates into water supply network can reduce an order of magnitude.
In sum, the present invention has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (10)
1. the process for purifying water of microfauna is held back in a millipore filtration, comprises filter progress, and described filter progress refers to utilize micropore filter element to hold back microfauna in the water body, and the micro-pore diameter on the described micropore filter element is 5-10 μ m.
2. the process for purifying water of microfauna is held back in a kind of millipore filtration as claimed in claim 1, it is characterized in that, described micropore filter element is the column construction of hollow, and water body imports the hollow space of column construction, flows out from inside to outside micropore filter element.
3. the process for purifying water of microfauna is held back in a kind of millipore filtration as claimed in claim 2, it is characterized in that, described water body flows out micropore filter element from inside to outside by self gravitation mode or low pressure filter type.
4. the process for purifying water of microfauna is held back in a kind of millipore filtration as claimed in claim 2, it is characterized in that, described micropore filter element is the cylindrical structural of hollow, and hole area accounts for the 72-83% of the sidewall total area.The process for purifying water of microfauna is held back in a kind of millipore filtration as claimed in claim 2, it is characterized in that, when described water body imports, by under meter and valve controlled filter speed.
5. the process for purifying water of microfauna is held back in a kind of millipore filtration as claimed in claim 2, it is characterized in that, described filter core outside is provided with sleeve.
6. the process for purifying water of microfauna is held back in a kind of millipore filtration as claimed in claim 5, it is characterized in that, the material of described micropore filter element and sleeve is stainless steel.
7. the process for purifying water of microfauna is held back in described a kind of millipore filtration such as the arbitrary claim of claim 1-6, it is characterized in that, also is provided with the back flushing operation behind the described filter progress, and described back flushing operation refers to backwashing water from flowing into outside to inside micropore filter element.
8. as claimed in claim 7, it is characterized in that, during described back flushing operation, scrub simultaneously the micropore filter element inwall.
9. described a kind of millipore filtration is held back the process for purifying water of microfauna in the application in water body purification field such as the arbitrary claim of claim 1-8.
10. millipore filtration water purification apparatus, it is characterized in that, comprise micropore filter element, described micropore filter element is the column construction of upper opened type hollow, the bottom of described micropore filter element is provided with base, also is provided with suction culvert, and described suction culvert communicates with the hollow space of described column construction, the porosity of described micropore filter element is 72-83%, and the micro-pore diameter of described micropore filter element is 5-10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105875138A CN103058290A (en) | 2012-12-28 | 2012-12-28 | Water purifying method for intercepting microfaunas through microporous filtering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105875138A CN103058290A (en) | 2012-12-28 | 2012-12-28 | Water purifying method for intercepting microfaunas through microporous filtering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066059A (en) * | 2019-05-27 | 2019-07-30 | 浙江恒泽生态农业科技有限公司 | A kind of aquaculture system physical cleaning device |
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| US4876013A (en) * | 1983-12-20 | 1989-10-24 | Membrex Incorporated | Small volume rotary filter |
| JP3569605B2 (en) * | 1997-02-25 | 2004-09-22 | 日本碍子株式会社 | Water recovery method from wastewater containing colloidal silica |
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Application publication date: 20130424 |