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大庆炼由厂第二污水处理场采用投菌（同步）法脱氮、使ＮＨ３－Ｎ的去除率达到９０％以上。采用铁法二级脱硫，脱硫率为９９％以上。总结出污水场来水水质冲击判断方法及污水冲击时应采取的对策。
Daqing refinement by the second sewage treatment plant using the bacteria (simultaneous) method of denitrification, the NH3-N removal rate of 90% or more. Iron secondary desulfurization, desulfurization rate of 99% or more. Summarized the judgment method of water quality impact on sewage farm and the countermeasures that should be taken when sewage impact.