增加生物接触氧化预处理工艺，显著提高了后续混凝沉淀池和砂滤池的除污染效果。
With the BCOP, pollutants removal effects of subsequent sedimentation tank and rapid sand filter could be improved.
混凝沉淀池和接触氧化池对LAS的去除率分别达到50 %以上和98%以上，但水解酸化池对LAS的去除率较低。
50% and 98% of LAS are removed in coagulation sedimentation and contact oxidation process respectively. But the LAS removal in hydrolysis acidification unit is still low.
该工艺在传统的化学混凝的基础上将沉淀池内的污泥回流至化学生物絮凝池，利用化学混凝和污泥吸附的协同作用去除污水中的污染物。
The cycle sludge was pumped to chemical biological flocculation tank and the pollutants were removed by co-operation of chemical coagulation and biological adsorption.
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