混凝技术处理塌陷区低浊水的试验研究  

Experimental Study on Treatment of Low Turbidity Water in Subsidence Area by Coagulation Technology

作　　者：郑利祥[1] 周如禄[1] 郭中权[1] 

机构地区：[1]中国煤炭科工集团杭州研究院,浙江杭州311201

出　　处：《环境科学与技术》2013年第10期157-160,共4页Environmental Science & Technology

摘　　要：为了解决煤矿塌陷区低浊度积水混凝效果差的问题,进行了絮凝剂聚合氯化铁(PFC)、聚合硫酸铝(PAS)和聚合氯化铝(PAC)单投及与助凝剂聚丙烯酰胺(PAM)和活化硅酸联投的试验研究。结果表明:采用单一絮凝剂处理塌陷区低浊水效果有限,当PAC投加量为20 mg/L时,去浊率只达到64.6%,而PAS投加量为35 mg/L时,才达到相同效果;当联投PAC投加量为20 mg/L,PAM投加量为0.20 mg/L时,出水浊度<1 NTU,去浊率达89.3%;而活化硅酸替代PAM,其投加量为25 mg/L时,才能达到相同效果。To solve the problem of poor coagulation effect of low turbidity water in a subsidence area of coal mine, the floc- culation agents such as polymetric ferric chloride （PFC）, polyaluminium sulfate （PAS）, polyaluminium chloride （PAC） dosed alone and combined with the coagulant aids such as polyacrylamide （PAM） and activated silicic acid were conducted by the experiment. Results showed that the treatment effect of low turbidity water in a subsidence area of coal mine by dosing a flocculation agent alone was limited, when the dosage of PAC was 20 mg/L, the removal rate of turbidity was only 64.6%, while the dosage of PAS was 35 mg/L to reach the same effect. When the combined dosage was PAC of 20 mg/L and PAM of 0.20 mg/L, the effluent turbidity was less than 1 NTU and the removal rate could reach 89.3%, while the dosage of activat- ed silicic acid instead of PAM was 25 mg/L to achieve the same result.

关 键 词：混凝技术 低浊度水 塌陷区 絮凝剂 助凝剂 

分 类 号：X703[环境科学与工程—环境工程]