Method and device for purifying sewage
专利汇可以提供Method and device for purifying sewage专利检索，专利查询，专利分析的服务。并且PURPOSE: To improve the activity of denitrifying bacteria and to enhance the denitrifying capacity by supplying sewage to the bed of the soil mixed with metallic iron and a filler to consume the oxygen in the sewage, and maintaining the bed in an anaerobic atmosphere.
CONSTITUTION: The SS, BOD, COD, etc., of the sewage A from a sewage sprinkler pipe 1 is aerobically decomposed in the coating soil bed 2 by the digesting and decomposing action of the soil organisms and the adsorbing and filtering action of soil to obtain treated water B. The treated water B is then infiltrated into the anaerobic and water-permeable soil 6, and brought into contact with the iron particles as a reducing agent in the soil. As a result, a large amt. of oxygen in the treated water B and the soil 6 is consumed, and the activity of the denitrifying bacteria is improved. Consequently, the NO
2 and NO
3 -N in the treated water B are converted to N
2 and N
2 O by the denitrifying bacteria while infiltrating down the soil 6, and efficiently denitrified. By this method, purified water C with the org. matter and nitrogen contents remarkably reduced is obtained.
COPYRIGHT: (C)1990,JPO&Japio，下面是Method and device for purifying sewage专利的具体信息内容。
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