摘要
钨冶金生产过程中会产生大量难以处理的高盐且污染物种类较多的废水,这已成为行业共同面临的难题。本文利用白钨渣去除其中的氟并调节pH,采用膜技术处理其中的氨氮,最后使用电化学催化氧化法处理COD,对不同条件的废水处理效果进行了比较。研究结果表明,碱煮白钨渣结合少量氯化钙的除氟率超过90%,低于国家相关排放标准;利用膜吸收30 min以上,可以除去90%以上的氨氮,最后结合电化学氧化可大幅降低COD,使之达标排放。
A large amount of difficult-to-treat high-salt wastewater with a large variety of pollutants is produced in tungsten metallurgical production,which has become a common problem faced by the industry.In this paper,scheelite slag is used to remove the fluorine and adjust the pH,and the membrane technology is used to treat the ammonia nitrogen,finally,the electrochemical catalytic oxidation method is used to treat COD,and the wastewater treatment effects under different conditions are compared.The research results show that the fluorine removal rate of alkali-cooked scheelite residue combined with a small amount of calcium chloride exceeds 90%,which is lower than the relevant national emission standards;using the membrane to absorb more than 30 minutes can remove more than 90%of the ammonia nitrogen,and finally combined with electrochemical oxidation can greatly reduce COD and make it meet the emission standards.
作者
王松林
Wang Songlin(Jiangxi Xiushui Ganbei Tungsten Industry Co.,Ltd.,Jiujiang 332422,China)
出处
《中国资源综合利用》
2020年第12期201-204,共4页
China Resources Comprehensive Utilization
关键词
钨冶炼废水
白钨渣
除氟
氨氮
COD
wastewater from tungsten smelting
tungsten slag
fluorine
ammonia
COD
作者简介
王松林(1975-),男,安徽庐江人,硕士研究生,工程师,从事钨冶炼工作。
