低浓度含砷废水处理试验探究  

Research on the Treatment of Low-concentration Arsenic-Containing Wastewater

作　　者：乔爱平 史庆龙 李行德 任雪娇 Qiao Aiping;Shi Qinglong;Li Hangde;Ren Xuejiao(Yunnan Dadi Fengyuan Environmental Protection Co.,Ltd.,Kunming 650401,China;Yunnan Dadi Lvkun Environmental Protection Technology Co.,Ltd.,Kunming 650401,China)

机构地区：[1]云南大地丰源环保有限公司,云南昆明650401 [2]云南大地绿坤环保科技有限公司,云南昆明650401

出　　处：《云南化工》2022年第2期27-29,共3页Yunnan Chemical Technology

摘　　要：采用复合铁盐、石灰、磷酸盐、PAM对含砷废水进行除砷实验探究,结果表明:在复合铁盐加入量为2%~3%,磷酸盐加入量为3%~4%,石灰加入量为5%~20%,调节pH为7~9,PAM加入量为1%的条件下,废水中砷含量从1018 mg/L降至0.32 mg/L,除砷率达99.968%。处理后的废水能达到《污水综合排放标准》GB8978-1996(0.5 mg/L)的要求,处理后产生的污泥能达到《危险废物填埋污染控制标准》GB18598-2019规定的含量1.2 mg/L以下。This article uses composite iron salt,lime,phosphate,and PAM to carry out arsenic removal experiments from arsenic contained wastewater.The research results show that the arsenic-containing wastewater is treated with 2-3%of the composite iron salt,3%-4%of the phosphate,5%-20%of lime to adjust the pH to 7-9,and the amount of PAM is 1%.Under these conditions,Arsenic content in wastewaterdecreased from 1018 mg/L to 0.32 mg/L,and the arsenic removal rate of wastewater reached 99.968%.The treated wastewater can reach the“Integrated Wastewater Discharge Standard”GB8978-1996(0.5 mg/L),and the sludge produced after the treatment can reach the“Hazardous Waste Landfill Pollution Control Standard”GB18598-2019(1.2 mg/L)or less.

关 键 词：含砷废水 吸附沉淀法 复合铁盐 

分 类 号：X70[环境科学与工程—环境工程]