初滤水（initial filtrated water）指的是在滤池反冲洗后，重新过滤的初始阶段滤后出水。
清水池内浊度容易升高，这可能与滤池初滤水的水质较差有关。
The turbidity level may increase in clear water tank, probably because of the high turbidity level of the filtrate after backwashing.
排放初滤水，对反冲洗水进行混凝沉淀预处理后再回收，能提高滤后水的微生物学安全性。
The microbiological safety of filtered water can be improved by discharging initial filtered water and recovering backwash water after coagulation and sedimentation pretreatment.
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