鸟粪石沉淀过程中的影响因素实验研究

Experimental study of influential factors in the process of struvite precipitation

以实验室模拟含磷废水为研究对象,通过正交实验探讨了pH,Mg/P,N/P对鸟粪石沉淀过程的影响,实验结果表明,当模拟废水的PO43-(以P计)为60 mg/L,固定反应时间为30 min,pH值为9.5,Mg/P为1.4∶1,N/P为4∶1时,鸟粪石沉淀反应的磷回收效果较好。

Taking phosphorus wastewater stimulated in laboratory as research object, this paper discusses the influences of pH, Mg/P and N/P on the process of struvite precipitation through orthogonal experiment, and the experimental result shows that the phosphorus recycling result of struvite precipitation is well while the PO4^3-4 （Valued by P） of stimulated wastewater is 60 mg/L, the fixed reaction time is 30 min, pH value is 9.5, Mg/P is 1.4：1, and N/P is 4：1.