云南化工
雲南化工
운남화공
YUNNAN CHEMICAL TECHNOLOGY
2015年
2期
27-28,52
,共3页
废水%砷%絮凝沉淀%石灰
廢水%砷%絮凝沉澱%石灰
폐수%신%서응침정%석회
wastewater%arsenic%flocculation precipitation%lime
采用多级絮凝沉淀方法对高盐高砷酸性废水进行处理,用20%的石灰及5%氢氧化钠溶液调节废水的 pH 值,一次曝气除砷硫酸铁用量为 n(Fe)∶n(As)=3.5,二次曝气除砷硫酸铁用量为 n(Fe)∶n(As)=10,可大量去除废水中的盐和砷,处理后的废水达到国家排放标准的要求。
採用多級絮凝沉澱方法對高鹽高砷痠性廢水進行處理,用20%的石灰及5%氫氧化鈉溶液調節廢水的 pH 值,一次曝氣除砷硫痠鐵用量為 n(Fe)∶n(As)=3.5,二次曝氣除砷硫痠鐵用量為 n(Fe)∶n(As)=10,可大量去除廢水中的鹽和砷,處理後的廢水達到國傢排放標準的要求。
채용다급서응침정방법대고염고신산성폐수진행처리,용20%적석회급5%경양화납용액조절폐수적 pH 치,일차폭기제신류산철용량위 n(Fe)∶n(As)=3.5,이차폭기제신류산철용량위 n(Fe)∶n(As)=10,가대량거제폐수중적염화신,처리후적폐수체도국가배방표준적요구。
Treated highly arsenic and highly saline wastewater with multi -level flocculation method. The pH value of the wastwater was adjusted with 20% lime and 5% sodium hydroxide.In primary aeration, the amount of ferric sulfate for arsenic removal is n(Fe)∶n(As) =3.5,in the second aeration,the amount of ferric sulfate for arsenic removal is n(Fe)∶n(As) =10,in such way salt and arsenic can be largely re-moved,treated wastewater reached the national emission standards.