摘要
以SO_(4)^(2-)的去除率作为考察指标,在高浓度SO_(4)^(2-)模拟地下水中以不同方式投加高铁酸钾(K_(2)FeO_(4))、聚合氯化铝(PAC)和聚丙烯酰胺(PAM),考察不同药剂对SO_(4)^(2-)的去除效果,并对其去除机理进行了分析.研究结果显示,对于SO_(4)^(2-)浓度为1000 mg/L的原水,加入K_(2)FeO_(4)比单独使用PAC和PAM处理时去除效果显著提高;K_(2)FeO_(4)-PAC-PAM复合药剂对SO_(4)^(2-)的去除率可达46.69%;并且发现K_(2)FeO_(4)和PAC-PAM的投加顺序也会对SO_(4)^(2-)的去除率产生不同程度的影响.在K_(2)FeO_(4)-PAC-PAM复合药剂体系中,K_(2)FeO_(4)起到显著的絮凝协同作用,从而使高浓度硫酸盐通过强化絮凝作用被去除.
In order to increase effectively the utilization value of groundwater with high sulfates content in waterscarce areas and to provide water quality guarantee for industrial water treatment processes such as reverse osmosis,taking the removal rate of SO_(4)^(2-)as the investigation index,potassium ferrate(K_(2)FeO_(4)),polyaluminium chloride(PAC)and polyacrylamide(PAM)are added in different ways in simulated groundwater with high concentration of SO_(4)^(2-)to investigate the removal effect of different agents on SO_(4)^(2-).Removal mechanism is also analyzed.It is shown that for raw water with a concentration of SO_(4)^(2-)1000 mg·L^(-1),the removal effect is significantly improved after adding K_(2)FeO_(4)than when using PAC and PAM alone;the removal rate of SO_(4)^(2-)by K_(2)FeO_(4)-PAC-PAM compound agent can reach 46.69%,in which the adding order among K_(2)FeO_(4),PAC and PAM will also affect the removal rate of SO_(4)^(2-)to varying degrees.It is found that in K_(2)FeO_(4)-PAC-PAM compound system,K_(2)FeO_(4)plays a significant flocculation synergy,so that highconcentration sulfate is removed by enhanced flocculation.
作者
王红旺
崔建国
李红艳
张峰
王朝旭
崔佳丽
WANG Hong-wang;CUI Jian-guo;LI Hong-yan;ZHANG Feng;WANG Chao-xu;CUI Jia-li(College of Environmental Science and Engineering,Taiyuan University of Technology,Graduat eEducation Innovation Center of Shanxi Institute of Municipal Engineering,Jinzhong 030600,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第S01期138-142,共5页
Modern Chemical Industry
基金
山西省自然科学基金资助项目(201701D121126)
关键词
高浓度硫酸盐
高铁酸钾
聚合氯化铝
聚丙烯酰胺
地下水
high-concentration sulfates
potassium ferrate(K_(2)FeO_(4))
polyaluminum chloride(PAC)
polyacrylamide(PAM)
groundwater
