| 摘要 |
A process for dehydration of sewage sludge on sludge beds is carried out by preliminary reagent treatment before its supply to sludge bed. As reagent aqueous composition is used, containing aluminium polyelectrolyte as coagulant and texturing agent, containing highly molecular polyethylene oxide, dispersant, containing of propylene glycol, sodium and calcium salts and glycerine and silicon dioxide as activators. |
