化学混凝沉淀法处理高炉煤气洗涤水的研究

Treatment of Blast-Furnace Gas Washing Water by Chemical Coagulatory Coprecipitation

用化学混凝共沉淀的方法处理高炉煤气洗涤水,实验确定了最佳的药剂为聚合氯化铝钙,工艺的最佳操作条件是聚合氯化铝钙加入量为33mg/L,PAM加入量为0.5mg/L,搅拌时间为60s,搅拌强度为90r/min。按本法确定的工艺处理此类废水工艺简单,操作方便,处理费用低,易于推广。某铁厂采用此法处理该类废水取得良好的效果,达到国家的排放标准和循环使用的标准。

A chemical coagulatory coprecipitation method was used in the treatment of blast-furnace gas washing water. It was determined by the test that the optimum agent is poly-aluminum calcium chloride, and the optimum operating conditions with this process are such that the dosing of poly-aluminum calcium chloride is 33 mg/L, the dosing of PAM is 0.5 mg/L, the stirring time is 60 seconds and the stirring speed is 90 r/min. The process determined by this method for the treatment of such waste water is simple and easy to operate and to popularize. The cost of the treatment is lower. Good results have been obtained in an iron works in using this method for the treatment of such waste water, which has reached the state standards for discharging and recycling.