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将曝气生物活性炭滤池过滤组合工艺与中置曝气生物活性炭工艺进行对比,通过检测各工艺构筑物出水浊度、COD_(Mn),不同滤速下炭滤池水头损失等参数,验证前砂滤池在生物活性炭工艺中存在的必要性。前砂滤池对浊度的去除率高达92.61%,出水浊度基本在0.3 NTU以下,对延长炭滤池中活性炭寿命有重要作用;前砂滤池对COD_(Mn)的去除率为18.63%,能为炭滤池减轻有机负荷;砂滤池存在的情况下,保持滤速稳定,炭滤池的水头损失基本稳定,反冲洗周期得到延长,而无砂滤池存在时,炭滤池水头损失增长较快,反冲洗周期较短。
By comparing the aeration biological activated carbon filter filter combination process with the mid-aeration bio-activated carbon process, parameters such as effluent turbidity, COD Mn and head loss of carbon filter under different filtration velocities were tested to verify the effect of pre- Necessity of the filter in the bio-activated carbon process. The removal rate of turbidity of the former sand filter was as high as 92.61% and the effluent turbidity was below 0.3 NTU, which played an important role in prolonging the life of activated carbon in the carbon filter. The removal rate of COD_ (Mn) in the former sand filter was 18.63% , Can reduce the organic carbon filter load; sand filter case exists, to maintain a stable filter speed, carbon filter head loss is basically stable, backwash cycle is extended, without the presence of sand filter, carbon filter head Losses increased faster, shorter backwash cycle.