缓释型除磷药剂在小型污水处理装置中的应用

The Application of Sustained-release Dephosphorization Tablets to a Small Wastewater Treatment Plant

新型缓释型除磷药剂是一种片剂状铝盐无机化合物絮凝剂,具有在水流的冲刷作用下缓慢溶解,同时保持一定强度和形状的特性.通过新型缓释除磷药剂在A/O工艺污水处理装置中的应用,对其特性及处理效果进行了研究.结果表明,该药剂投加设备简单,维护管理方便,适用于小型污水处理装置的除磷.平均药片用量为2片/m3污水（200 g/片）,出水的TP浓度为0.52～1.80 mg/L,去除率为82％～87％.

Sustained-release dephosphorization tablet is a new type of aluminum salt inorganic compound flocculent, which can be slowly dissolved under the effect of scouring water while maintaining a certain intensity and shape. The characteristic and treatment effect of sustained-release dephosphorization tablets were studied through the application of sustained-release dephosphorization tablets to the wastewater treatment plant for the A/O process. Results show that the dosing equipment of sustained-release dephosphorization tablets is simple to use and easy to maintain. The tablets are suitable to phosphorus removal of small wastewater treatment plants. Under the condition of an average tablets dosage of 2 pieces per cubic meter in wastewater, the final effluent concentration of TP is 0.52-1.80 mg/L and the removal rate is 82%-87%.