Abstract:
The optimization of polyacrylamide (PAM) wastewater treatment by coagulation -adsorption has been studied. Attapulgite is used as the coagulation crystal nucleus and poly-aluminium chloride (PAC) as coagulant. Experimental results show that COD decreases by 30.45% or so by using attapulgite as crystal nucleus only， and decreases by 43.22% by using PAC as coagulant only. When 75 mg of PAC per 200 mL wastewater is added， and the mass ratio of PAC to attapulgite is 4 ∶1，the COD decreases by 52.32% . When 100 mg of PAC per 200 mL wastewater is added，the mass ratio of PAC to attapulgite is 6∶1，the COD decreases by 54.38%. According to the optimal ratio，when the pH is 6-6.5，the peak of COD removal rate reaches.
Key words:
attapulgite,
polyacrylamide,
polyaluminium chloride,
coagulation
摘要：
利用凹凸棒土作为混凝的晶核,采用聚合氯化铝(PAC)作为絮凝剂,研究了处理聚丙烯酰胺(PAM)废水的混凝优化条件。实验表明:只用凹凸棒土作为晶核,可使COD下降30.45%左右;只用PAC作为混凝剂,可使COD下降达43.22%;每200 mL废水中加入75 mg PAC,PAC/凹凸棒土按质量比4∶1投加时,COD去除率为52.32%;每200 mL废水中加入100 mg PAC,PAC/凹凸棒土按质量比6∶1投加时,COD去除率为54.38%。在最优配比下,pH为6~6.5时,COD去除效率最高。
关键词:
凹凸棒土,
聚丙烯酰胺,
聚合氯化铝,
混凝
CLC Number:
Li Zhenyu, Sun Yabing, Xu Jianhua, Chen Ying, Miao Hong, Wang Jinyu, Wang Huiying, Feng Jingwei. Study on the optimization of polyacrylamide wastewater treatment by coagulation-adsorption[J]. INDUSTRIAL WATER TREATMENT, 2011, 31(6): 49-51,69.
李振玉, 孙亚兵, 徐建华, 陈颖, 缪虹, 王瑾瑜, 王惠英, 冯景伟. 聚丙烯酰胺废水的混凝—吸附优化研究[J]. 工业水处理, 2011, 31(6): 49-51,69.