The Research Of Central Island Oxidation Ditch Biological Film System To Treat The High Nitrogen Low-Carbon City Sewage

In recent years, along with the problem of global water body eutrophication of nitrogen phosphorus is serious day by day, the nitrogen phosphorus removal technology always is the research develops and applies hot spot in sewage treatment domain. In normal city sewage nitrogen phosphorus removal uses the CASS tprocess, the A²/O process and A²/C process, and so on, can achieve "Sewage Synthesis Discharges Standard" (GB8978-1996) level of standards requests. But regarding certain high-tech development zone high nitrogen low-carbon (COD_Cr,/NH₃-N ≤1) city sewage, traditional process cann't achieve the request. This experiment uses the Membrane Method Central Island Oxidation Ditch process, to conduct the correlative research of treating this kind of sewage, This experiment have the extremely vital significance for process the high nitrogen low-carbon city sewage from now on.In view of the high TKN, the low organic matter special sewage, uses the Integrated Central Island Oxidation Ditch Installment which extended aeration and the biological membrane method unifies. The experiment designated lays aside a quota in the tradition oxidation ditch the YDT elasticity three-dimensional padding, simultaneously, establishes in the oxidation ditch central island secondary sedimentation tank, causes the experimental main body installment collection oxidation ditch, the biological film method, the central island secondary...