| 摘要 |
PROBLEM TO BE SOLVED: To provide a treating method for an org. sewage capable of stably obtaining a treated water high in clarity without flowing out of sludge to the treated water, and also capable of making the treating device compact, low in equipment cost and large in treating amount. SOLUTION: An admixture removing stage 1 removing admixtures from the org. sewage, a biologically treating stage 2 where the org. matter in the org. sewage, from which the admixture is removed, is subjected to a biological decomposition treatment, a sludge filtering stage 3 where a filtered water is obtained by subjecting the biologically treated water to filtering separation at a sludge filter layer filtering device provided with a sludge filter layer filtering module and a membrane separating stage 4 where a clear permeated water is obtained by subjecting the filtered water subjected to the filtering separation to a membrane permeation treatment at a filter membrane device provided with a filter membrane module are provided, and a sterilizing stage is provided at need. |
