两级化学-混凝沉淀工艺处理高浓度含氟废水工程实例
Treatment of Highly Concentrated Fluoride-containing Wastewater by Two Stage Chemical/coagulation and Sedimentation Process
谢晟盛 1华磊 1王楠 1邰睿曦 1李小阳 1唐胡钰 1徐昭晖 1戴劲1
作者信息
- 1. 中机国际工程设计研究院有限责任公司,湖南 长沙 410007;湖南省水处理过程与装备工程技术研究中心,湖南 长沙 410007;长沙市水处理过程与装备技术创新中心,湖南 长沙 410007
- 折叠
摘要
针对某从事硅砂开采、加工、提纯企业排放的高浓度含氟废水,文中采用两级化学-混凝沉淀组合工艺,在投加钙盐的基础上联合投加适量PAC和PAM.工程实践结果表明,在系统稳定运行的情况下,出水可稳定满足回用及排放要求,回用水氟离子浓度小于20 mg/L,排水氟离子浓度小于10 mg/L,且联合药剂投加可提高氟化物的去除率.
Abstract
The highly concentrated fluoride-containing wastewater discharged from a silicon sand mining、processing and purification enterpri-ses.has treated by two stage chemical/coagulation and sedimentation process.PAC and PAM were added on the basis of adding calcium salts.Engineering practice results showed the treated wastewater can stably meet the reuse and discharge requirementsin case of stable operation of the system.The concentration of F-is less than 20 mg/L when the treated wastewater was reused;the concentration of F-is less than 10 mg/L when the treated wastewater was discharged.The addition of combined agents can improve the removal rate of fluoride.
关键词
含氟废水/化学—混凝沉淀/聚合氯化铝/聚丙烯酰胺Key words
Fluoride-containing wastewater/Chemical/coagulation and sedimentation process/PAC/PAM引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据