摘要
针对钨冶炼废水高盐分、含COD和氨氮、水质相对复杂等特点,采用预处理除氟-电化学除COD和氨氮-纳米晶磁沉淀的组合工艺进行处理,工程运行结果表明,COD的质量浓度从350~400 mg/L降到20~50 mg/L,氨氮的质量浓度从50~80 mg/L降到5 mg/L以下,氟化物的质量浓度从100~150 mg/L降到5~8 mg/L,出水水质达到GB 18918—2002《城镇污水处理厂污染物排放标准》中的一级B标准要求后直接排放。
In view of the characteristics of tungsten smelting wastewater such as:high salinity,COD and ammonia nitrogen-containing,relatively complex quality,and so on,a combined process of pretreatment defluorination-electrochemical COD and ammonia nitrogen removal-nanocrystalline magnetic sedimentation,was adopted for its treatment.The operation results of the project showed that,the mass concentrations of COD,NH3-N,and fluoride decreased from 350-400,50-80 and 100-150 mg/L respectively to 20-50,below 5,5-8 mg/L respectively.The effluent water quality met the requirement of level B grade 1 in GB 18918—2002 Discharge standard of pollutants for municipal wastewater treatment plant,and can be discharged directly.
作者
刘汉阳
周剑雄
蒋敏
邓军
LIU Hanyang;ZHOU Jianxiong;JIANG Min;DENG Jun(Changsha Huajie Environmental Protection Technology Co.,Ltd.,Changsha 410000,China)
出处
《工业用水与废水》
CAS
2024年第5期92-95,共4页
Industrial Water & Wastewater
关键词
钨冶炼废水
高盐
除氟
电化学
纳米晶磁沉淀
tungsten smelting wastewater
high salinity
defluorination
electrochemistry
nanocrystalline magnetic sedimentation
