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混凝法去除水体中邻苯二甲酸二甲酯
张鹏1, 郑怀礼2, 邓晓莉3, 蒋绍阶4, 王晶晶5, 刘澜6, 杨波7
1.重庆大学 三峡库区生态坏境教育部重点实验室,重庆 400045;2.重庆大学 三峡库区生态坏境教育部重点实验室,重庆 400046;3.重庆大学 三峡库区生态坏境教育部重点实验室,重庆 400047;4.重庆大学 三峡库区生态坏境教育部重点实验室,重庆 400048;5.重庆大学 三峡库区生态坏境教育部重点实验室,重庆 400049;6.重庆大学 三峡库区生态坏境教育部重点实验室,重庆 400050;7.重庆大学 三峡库区生态坏境教育部重点实验室,重庆 400051
摘要:
研究采用强化混凝法去除水体中特征性有机污染物邻苯二甲酸酯类化合物(PAEs)。以邻苯二甲酸二甲酯(DMP)为目标物,阳离子混凝剂聚二甲基二烯丙基氯化铵(PDMDAAC)与聚丙烯酰胺(CPAM)为混凝剂,对含DMP的水体进行强化混凝处理,混凝处理后水体中DMP的残余浓度采用高效液相色谱法(HPLC)测定。研究内容还包括混凝剂的投加量、pH值、静置时间对去除效果的影响,试验获得了较好的研究结果。研究结果表明PDMDAAC与CPAM复合使用后的去除效果优于单一混凝剂PDMDAAC的去除效果,当水体中DMP浓度为0.50 mg/L, PDMDAAC与CPAM投加量分别为50 mg/L与2.5 mg/L,pH为6.0及沉降时间3 h时,DMP最大去除率可达99.87%。采用混凝法去除水体中PAEs操作简便,如将该方法用于实际供水中有利于将水体中的PAEs与浊度同时去除。
关键词:  混凝法  水处理  去除  内分泌干扰物  邻苯二甲酸二甲酯
DOI:10.11835/j.issn.1674-4764.2011.04.025
分类号:
基金项目:国家自然科学基金资助项目(51078366);国家水污染控制与治理科技重大专项(2009ZX07424-004);教育部高等学校科技创新工程重大项目培育基金项目(708071)
Removal of Dmethyl Phthalate from Water with Enhanced Coagulation Technology
ZHANG Peng1, ZHENG Huai-li2, DENG Xiao-li3, JING Shao-jie4, WANG Jing-jing5, LIU Lan6, YANG Bo7
1.Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education, Chongqing University,Chongqing 400045,P.R.China;2.Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education, Chongqing University,Chongqing 400046,P.R.China;3.Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education, Chongqing University,Chongqing 400047,P.R.China;4.Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education, Chongqing University,Chongqing 400048,P.R.China;5.Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education, Chongqing University,Chongqing 400049,P.R.China;6.Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education, Chongqing University,Chongqing 400050,P.R.China;7.Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education, Chongqing University,Chongqing 400051,P.R.China
Abstract:
The removal of Phthalate Esters (PAEs) from water was measured by using enhanced coagulation technology.Cationic coagulant poly-diallyl-dimethyl-ammonium-chloride (PDMDAAC) and polyacrylamide (CPAM) were employed to remove the dimethyl phthalate (DMP),and the residual concentration of DMP is determined by the high performance liquid chromatography (HPLC).During the coagulation/flocculation process,parameters such as coagulant dosage,pH value,and sedimentation time are investigated.The results show the use of coagulant PDMDAAC/CPAM together has better coagulation effect than PDMDAAC.DMP removal rate is 99.87% when initial DMP concentration is 0.50 mg/L,the addition of a PDMDAAC dosage 50 mg/L,the addition of a CPAM dosage 2.5 mg/L,pH value 6.0 and sedimentation time 3 hours.Therefore,the removal of PAEs by coagulation is effective,and the application of coagulation by PDMDAAC/CPAM in water supply will enhance the removal of PAEs and at the same time reduce the water turbidity.
Key words:  coagulation  water treatment  removal  endocrine disruptors  dimethyl phthalate
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