Secondary sludge produced in the papermaking process is dewatered by adding a material capable of absorbing water together with dry fibers to the secondary sludge, and mixing the secondary sludge with the dried fibers to produce a modified secondary sludge which has sufficient structure and low enough...http://www.google.fr/patents/US5562832?utm_source=gb-gplus-shareBrevet US5562832 - Absorptive sludge dewatering process for papermaking waste
Absorptive sludge dewatering process for papermaking waste
