Oxic, abbreviations are anaerobic -
A lack of oxygen -
Aerobic biological denitrification and phosphorus removal process referred to as 'the processing efficiency can reach commonly: BOD5 and SS was 90% ~ 95%, and total nitrogen above 70% yuncheng sewage treatment equipment
, phosphorus is approximately 90%, generally applicable to the requirements of denitrification and phosphorus removal of large and medium-sized city sewage plant but A2 / O process of capital expenditure and operation integration of sewage treatment equipment manufacturer line costs are higher than normal activated sludge process, operation and management demand is high, so for now the situation of our country, after the treatment of sewage water closed or slow flow water bodies cause eutrophication of water body, which affect water supply water source, only using the process of anaerobic, anoxic and aerobic three different environmental conditions and different kinds of organic microbe groups to cooperate, can also have the function of the removal of organic matter, nitrogen and phosphorus denitrogenation effect is affected by the mixture of reflux ratio size, DO wrapped into the phosphorus removal effect is the return sludge and nitric acid, the influence of oxygen and nitrogen and phosphorus efficiency may not be very high
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