FLOCCULATION AND SEDIMENTATION TREATMENT METHOD FOR SEWAGE, FOOD WASTE WATER OR THE LIKE BY RECOVERED FLOCCULANT FROM SERVICE WATER SLUDGE

摘要

PROBLEM TO BE SOLVED: To provide a flocculation and sedimentation treatment method for removing a substance such as COD, nitrogen and phosphorus, and a chemical substance such as an agricultural chemical or the like by flocculating and settling a suspended matter in sewage, food waste water or the like by a recovered flocculant from service water sludge.;SOLUTION: The flocculation and sedimentation, or floatation treatment method for the sewage, the food waste water or the like by the recovered flocculant from the service water sludge carries out flocculation and sedimentation, or floatation treatment of the suspended matter in the sewage, the food waste water, water in waste material disposal facilities or the like in an area of pH of 5 or higher using the recovered flocculant obtained by flocculation of the suspended matter in raw water, flocculation for obtaining clear service water by carrying out sedimentation treatment and acid treatment of sludge generated from a sedimentation treatment process by sulfuric acid or the like.;COPYRIGHT: (C)2007,JPO&INPIT