反硝化滤池在某工业园区污水处理厂的中试研究

Pilot Scale Test of Denitrification Filter in an Industrial Zone Wastewater Treatment Plant

利用Leopold反硝化滤池中试装置对污水处理厂二级出水进行脱氮除磷。试验结果表明,中试系统对硝态氮的去除效果良好,试验期间出水硝态氮浓度约为1 mg/L,平均去除率为82.28%;出水总氮基本在5 mg/L以下;以甲醇为碳源,可使出水COD稳定在30 mg/L以下;采用PAC强化除磷后,除磷效果稳定,出水总磷浓度基本在0.3 mg/L以下。

A pilot test on the denitrification and removal of phosphorous in secondary treatment ef- fluent was carried out using a Leopold pilot test unit. The study showed that the pilot unit achieved excel- lent denitrification effect. The average removal rate of nitrate was 82.28%, and the effluent concentration of nitrate was maintained at 1 mg/L. The effluent concentration of total nitrogen was controlled below 5 mg/L when the ammonia concentration was low. The effluent COD was constantly below 30 mg/L if meth- anol was added. The study also showed good phosphorus removal by using PAC, and the total phosphorus in effluent was approximately below 0.3 mg/L.