摘要
本设计通过参考一些成功的类似废水处理工程实例,针对某公司电镀废水的特点,采用组合池,先破氰再综合处理的工艺。废水在碱性条件下,用次氯酸钠作氧化剂,使氰根氧化成氮气、氢气和碳酸盐;含铜、镍酸碱综合废水流入综合调节池和破氰后的废水合并,然后提升到中和池中,调整废水的pH值后,通过投加PAC(聚合氯化铝)和PAM(聚丙烯酰胺),使水中颗粒在混凝剂的作用下变大,然后在沉淀池中分离沉淀物,达到去除重金属的目的;处理后的水经过回调pH后,出水部分回用到电镀工艺中,实现了废物资源化,处理后的水可达到《电镀污染物排放标准》(GB21900-2008)新建电镀企业中电镀废水污染物排放限值。
The design by reference to a number of successful examples of similar waste water treatment works for the company’s electroplating wastewater characteristics,use the combined pool,first broke cyanide,then adopt the integrated treatment process.Wastater under alkaline conditions,using sodium hypochlorite as oxidant,the cyanide into nitrogen,hydrogen and carbonate;copper,nickel,acid-base integrated wastewater into the integrated pool,and then elevated to the,adjust the water’s pH value,by adding PAC and PAM(polyacrylamide),so that the water particles in the larger role of coagulant,and then separation of sediment in the sedimentation tank,to achieve the purpose of removing heavy metals;the treated water through the callback after pH,discharge back to the electroplating process used to achieve the waste recycling.treated water to achieve"emission standards for plating"GB21900-2008 the new electroplating enterprises in the electroplating wastewater emission limits.
作者
聂建瑞
NIE Jian-rui(Zijin Mining Group Company Limited,Longyan 364200,China)
出处
《世界有色金属》
2020年第14期180-182,共3页
World Nonferrous Metals
关键词
电镀废水
组合池
破氰
混凝沉淀
Electroplating wastewater
Combination Pond
Broken cyanide
Coagulation
