【摘要】 介绍了化学沉淀法处理金属表面磷化废水的原理,提出了石灰法处理磷化废水的工艺流程和技术参数,指出pH=10.2~11.5时,可以使PO43-和Zn2+同时达到良好的沉淀效果,满足排放标准的要求。更多还原

【Abstract】 Chemical precipitation is introduced,which is used to treat metal surface phosphate coating wastewater,the process and parameters of lime method to treat phosphate coating wastewater are presented,pointing out that the removal rate of PO₄^3- and Zn²⁺ can reach good precipitation effect and the discharge standard can be satisfied when pH=10.2～11.5.更多还原