Method and device for treating sewage
专利汇可以提供Method and device for treating sewage专利检索，专利查询，专利分析的服务。并且PURPOSE: To execute stable and efficient dephosphorization by immersing metallic iron contact materials into an anaeration chamber behind a settling and separating region and allowing sulfate-reducing bacteria to coexist together with anaerobic microorganisms so that ions are eluted from the surfaces of the metallic iron contact materials.
CONSTITUTION: The sewage supplied into a 1st chamber 10 of a tank 1 is subjected to settling and separating of SS in said chamber. The supernatant flows from an outflow pipe 6 into the 2nd chamber 11 and the remaining part of the SS is separated. The supernatant of the 2nd chamber 11 flows from an outflow pipe 7 into the anaerobic chamber of the 3rd chamber 12 where the sulfatereducing bacteria coexist together with the the anaerobic microorganisms. The iron ions eluted from the flat plate contact materials made of iron by the sulfate-reducing bacteria are incorporated into the sewage flowing into the 3rd chamber 13 and react with the phosphoric acid ions in the sewage to form an insoluble phosphoric iron salt. The supernatant passes an outflow pipe 2 and flows into an aerobic treatment chamber 13 to which activated sludge is supplied from a return sludge pipe 21. The sewage is thus cleaned by an activated sludge method.
COPYRIGHT: (C)1989,JPO&Japio，下面是Method and device for treating sewage专利的具体信息内容。
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