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Algae-removal Effects of PAC/PDM on Taihu Lake Prechlorination Algae-rich Water in Summer


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Algae-removal Effects of PAC/PDM on Taihu Lake Prechlorination Algae-rich Water in Summer
ZHAO Xiao-leiZHANG Yue-junLI Xiao-xiaoLIU ChengZHU Ling-ling
School of Chemical Engineering,NUST,Nanjing 210094,China
polydimethyldiallylammonium chloride polyaluminum chloride composite coagulants algae-removal Taihu Lake water in summer prechlorination
The algae-removal efficiencies of the series of stable PAC/PDM composite coagulants composed of polyaluminum chloride(PAC) and polydimethyldiallylammonium chloride(PDM) on Taihu Lake prechlorination algae-rich water in summer are researched.The effects of composite coagulants with different mass percents(5%~20%) and intrinsic viscosity values(0.55~3.99 dL/g) of PDM on algae-removal rates and on values of COD and NH-N3 of effluent water after coagulation and sediment are studied through jar tests.The results show that for chlorine-added water with temperature of 29~30 ℃,turbidity of 34~37 NTU and algae cell density of 6.24×104 cells/mL,when residual turbidity of 2 NTU in effluent water is required by water plant,the dosages(based on Al2O3) of PAC,PAC/PDM(0.55/5%~3.99/20%) composite coagulants are 7.69,5.55~3.32 mg/L and the algae-removal rates are 89.50%,91.54%~94.01% respectively.Using composite coagulants can obviously increase the removal rates of COD and NH-N3 to chlorine-added water compared with using PAC solely.PAC/PDM composite coagulants can evidently enhance the algae-removal efficiencies of PAC on Taihu Lake chlorine-added water in summer.Compared with the single use of PAC,the PAC dosages in composite coagulants are saved if the residual turbidities are required in a same level.The treatment effects are enhanced and the effluent water quality is improved when the PAC dosages in composite coagulants are the same as the PAC dosage of using PAC solely.


[ 1] ?? 杨坚波, 林玉娣. 无锡太湖水域蓝藻污染与治理经 济效益分析[ J]. 中国初级卫生保健, 2004, 18 ( 1): 73- 74.
[ 2] W e iY Ch, ChenW. Landsa tTM image feature ex traction and analysis of algal bloom in Ta ihu Lake [ A ]. Proc SPIE?? In t Soc Opt Eng[ C] . Be llingham, USA: SPIE-The International Soc ie ty for Optical Eng inee ring, 2008: 700027- 700037.
[ 3] 徐晓军. 化学絮凝剂作用原理[M ]. 北京: 科学出 版社, 2005: 16; 124- 137.
[ 4] W andrey C, H ernandez-Barajas J, H unke ler D. Dia-l ly ld ime thy lamm on ium chloride and its po lym ers[ J]. Advances in Polym er Sc ience, 1999, 145: 123- 182.
[ 5] M asak iH, H ideo T, M inoru O, et a.l T reatm ent o f a-l gae-contain ing water[ P]. JP: 6182356, 1994- 07- 05.
[ 6] Gao B Y, W ang Y, Yue Q Y. The chem ical spec ies d istr ibution o f a lum inum in com posite flocculants prepared from po lya lum inum chloride( PAC ) and po lyd imethy ldially lamm on ium ch lor ide( PDMDAAC) [ J]. A cta H ydrochim H ydrobio,l 2005, 33( 4): 365- 371.
[ 7] H assick D E, M iknevich J P. Floccu lation o f suspended solid from aqueous so lutions[ P]. US: 4800039, 1989- 01- 24.
[ 8] H asse R A. C larification o fw ate r and wastew ate r[ P]. US: 6120690, 2000- 09- 19.
[ 9] Lindqv ist N, Joke la J, Tuhkanen T. Enhancem ent o f coagulation by using po lye lectro lytes as coagulant o r flocculan t a ids[ A ]. Chem icalW ater andW astewa ter T rea tm en t ?? [ C ]. London: IWA Pub lishing, 2004: 161- 169.
[ 10] 姚萱. H CA - 1阳离子净水剂处理巢湖高藻水[ J]. 水处理技术, 2002, 28( 2) : 120- 121.
[ 11] 张荣, 姜建伟, 董佩森. 夏季高藻水的处理工艺[ J]. 中国给水排水, 2002, 18( 4): 78- 79.
[ 12] 李潇潇, 张跃军, 赵晓蕾, 等. 聚合氯化铝/PDM 复合混 凝剂对冬季太湖预加氯水的处理研究[ J]. 南京理工 大学学报(自然科学版), 2008, 32( 4): 506- 511.
[ 13] 赵晓蕾, 张跃军, 李潇潇, 等. 预氯氧化下PAC /PDM 对冬季太湖水的混凝除藻性能[ J]. 中国给水排 水, 2009, 25( 19): 77- 80; 84.
[ 14] 张跃军, 李潇潇, 赵晓蕾. 聚合氯化铝- 聚二甲基二烯 丙基氯化铵复合混凝剂及其制备与应用方法[ P]. CN: 101323473, 2008- 12- 17.
[ 15] 张跃军, 李潇潇, 赵晓蕾, 等. PAC /PDM 复合混凝 剂用于夏季太湖水混凝脱浊研究[ J]. 环境科学, 2008, 29( 8): 2195- 2200.
[ 16] 高宝玉, 王燕, 岳钦艳, 等. 聚合铝基复合絮凝剂的 电荷特性及絮凝作用[ J]. 环境科学, 2003, 24( 1): 103- 106.
[ 17] 王燕, 高宝玉, 岳钦艳, 等. 聚合铝基复合絮凝剂的 特性[ J]. 环境科学, 2004, 25(增刊): 70- 73.
[ 18] 张跃军, 贾旭. 高相对分子质量聚二甲基二烯丙基 氯化铵的制备方法[ P ]. CN: 200610040746. 0, 2006- 05- 31.


Last Update: 2012-11-02