化学除磷投加系数及其应用技术

RESEARCH ON DOSING-COEFFICIENT OF CHEMICAL PHOSPHORUS REMOVAL AND APPLICATION TECHNOLOGY

为实现化学除磷的精确控制,避免药剂过量投加,成都市某污水处理厂开展了生产性试验,从化学药剂投加系数方面进行了研究。结果表明,化学除磷量△C_(TP)与PAC投加浓度CPAC之间存在显著的线性相关关系,两者关系式为:y=164.05x-26.932,R^2=0.8605。投加系数β值在一定程度上反映了化学药剂的除磷效率。本次试验中β值为5.16-6.83,均值为6.11。投加系数β与PAC投加浓度CPAC之间存在显著的线性相关关系,两者关系式为:y=0.0659x+3.2565,R^2=0.8066。由此可知,过量投加的药剂越多,药剂除磷效率越低。通过公式C_(PAC)=β×(△C_(TP)/31)×(27/(0.1×(54/102),可模拟出不同生化池末端投药前TP值(C_(TP1))情况下对应PAC投加浓度C_(PAC)。此方法可实现PAC除磷药剂的精确控制,避免过量投加,保证出水TP稳定,对实际生产有着重要的指导意义。

To achieve precise control of chemical phosphorus dosing and avoiding excessive dosing, through production test in a sewage treatment plant in Chengdu, we study on the dosing- coefficient of Chemical Phosphorus Removal. The results indicated that there is a significant linear correlation between the removal of total phosphorus A CTp and the PAC dosage CpAC, y = 164.05X -- 26.932,R2=0.8605. The dosing- coefficientβ indicated the efficiency of phosphorus removalreagentto some extent.The result of 13 is 5.16-6.83 and mean value is 6.11.in this research. There is a linear correlation between the dosing- coefficientl3 and the PAC dosage CpAc, y = 0.0659x ＋ 3.2565, R2 = 0.8066. The results show that the more reagent excess dose, the lower the efficiency of phosphorus removal is. Through the formula C_（PAC）=β＊（△C_（TP）/31）＊（27/（0.1＊（54/102）））,we simulate the PAC dosage CPAC under different CTP1. This method can achieve precise control of PAC, avoid excessive dosing, ensure the stability of TP of effluent, having the important guiding significance for actual production.