四川德阳市化工厂十分重视“三废”治理,取得了较好成绩,做法如下。一、对普钙生产中含氟气体的回收利用1979年以来我厂投资了39万元,建成了一套400吨/年产氟硅酸钠生产装置,较好地解决了氟气的污染。并生产出合格的氟硅酸钠。同时经济效益也十分明显。 Deyang City, Sichuan Chemical Plant attaches great importance to “three wastes” governance, and achieved good results, practices are as follows. I. Recovery and Utilization of Fluorine-Containing Gas in Production of Calcium Precursor Since 1979, our plant has invested RMB 0.39 million to build a set of 400 tons / year sodium fluorosilicate production plant, which has solved the pollution of fluorine gas well. And produce qualified sodium fluosilicate. At the same time the economic benefits are also very obvious.