Analysis of Magnetic Flocculation Process Conditions for River Water Treatment by Response Surface Method
-
摘要: 应用响应面法分析磁絮凝工艺处理微污染河水的影响因素和去除效果.以聚合氯化铝(PAC)、磁粉(MP)和聚丙烯酰胺(PAM)的投加量为因素,利用中心组合设计(Box-Behnken)和响应面法(RSM)分析了3个因素对响应值(浊度、正磷酸盐(PO43--P)和化学需氧量(COD)的去除率)的影响,并通过拟合回归模型来描述河水中污染物的去除效果.试验结果表明:磁絮凝工艺处理微污染河水的最佳工艺条件为:PAC为51.31 mg/L、MP为176.47mg/L、PAM为0.10 mg/L.在该条件下,浊度、正磷酸盐和COD的去除率分别可以达到96.80%、86.25%和51.00%,与模型预测值的相对误差小于2.12%.建立的统计学模型确信可靠,同时表明磁絮凝工艺具有较高的河水污染物去除能力.Abstract: Response surface methodology(RSM) was applied to analyze the magnetic flocculation influencing factors and removal efficiency for micro-polluted river water treatment.Box-Behnken experimental design was applied.The poly aluminum chloride(PAC),magnetic particle(MP) and polyacrylamide(PAM) were chosen as causal factors.The effects of these factors on turbidity,orthophosphate(PO43--P) and chemical oxygen demand(COD) removal efficiency were analyzed using RSM.The pollutants removals in river water were developed to describe by regression models.The results showed that the optimum conditions were PAC 51.31 mg/L,magnetic particle 176.47 mg/L and PAM 0.10 mg/L.Based on these conditions,the turbidity,orthophosphate and COD removals were 96.80%,86.25% and 51.00%,respectively.The relative errors between the measured data and the predicted values were less than 2.12%.It confirms that the statistic models are reliable,and the magnetic flocculation operating conditions for contaminants removals in river water are appropriated.
-
-
[1] WANG L K,HUNG Y T,SHAMMAS N K.Physicochemical treatment processes,handbook ofenvironmental engineering[M].Totowa:Humana Press,2005:103-138.
[2] ABER S,SALARI D,PARSA M R.Employing thetaguchi method to obtain the optimum conditions ofcoagulation-flocculation process in tannery wastewatertreatment[J].Chemical Engineering Journal,2010,162(8):127-134.
[3] LIANG Z,HAN B P,LIN H.Optimum conditions to treathigh-concentration microparticle slime water withbioflocculants[J].Mining Science and Technology,2010,20(3):478-484.
[4] XU Y,SUN W,WANG D S,et al.Coagulation of micro-polluted pearl river water with IDF-PACls[J].Journal ofEnvironmental Sciences,2004,16(4):585-588.
[5] ZHOU Q,XIAO J.Removal of nanometer particles inmicropolluted water source by coagulation with polysilicate-aluminum[J].Journal of South China University ofTechnology,2003,31(2):34-37.
[6] CHAVALPARIT O,ONGWANDEE M.Optimizingelectrocoagulation process for the treatment of biodieselwastewater using response surface methodology[J].Journal of Environmental Sciences,2009,21(11):1491-1496.
[7] BEN M L,KESENTINI I.Treatment of effluents fromcardboard industry by coagulation-electroflotation[J].Journal of Hazardous Materials,2008,153(3):1067-1070.
[8] 马放,王强,朱雪松,等.磁技术在污水处理中的应用现状及发展趋势[J].中国给水排水,2010,26(14):34-37.MA Fang,WANG Qiang,ZHU Xue-song,et al.Application status and development of magnetic technologyin wastewater treatment[J].China Water&Wastewater,2010,26(14):34-37.(in Chinese) [9] GOKON N,SHIMADA A,HASEGAWA N,et al.Ferrimagnetic coagulation process for phosphate ionremoval using high-gradient magnetic separation[J].Separation Science and Technology,2002,27(16):3781-3791.
[10] DUANGDUEN C,NTHAPORN A,KITIPHATMO-NTREE M,et al.The effects of magnetic field on theremoval of organic compounds and metals by coagulationand flocculation[J].Physica Status Solidi,2006(9):3201-3205.
[11] 曹勇锋,张朝升,张可方,等.采用微絮凝/大梯度磁滤工艺处理珠江水的研究[J].中国给水排水,2010,26(23):55-57.CAO Yong-feng,ZHANG Chao-sheng,ZHANG Ke-fang,et al.Treatment of pearl water by microflocculation/highgradient magnetic filter[J].China Water&Wastewater,2010,26(23):55-57.(in Chinese) [12] 王利平,何又庆,范洪波,等.磁絮凝分离法处理含油废水的研究[J].环境工程,2007,25(3):12-15.WANG Li-ping,HE You-qing,FAN Hong-bo,et al.Treatment of oily wastewater by magnetic flocculationseparation process[J].Environment Engineering,2007,25(3):12-15.(in Chinese) [13] 李博,屠幼英,梅鑫,等.响应面优化超临界CO2提取茶籽多糖的工艺研究[J].高校化学工程学报,2010,24(5):897-901.LI Bo,TU You-ying,MEI Xin,et al.Optimization ofsupercritical CO2 extraction process of the polysaccharidefrom tea seed by response surface methodology[J].Journal of Chemical Engineering of Chinese University,2010,24(5):897-901.(in Chinese) [14] 杨新河,李勤,黄建安,等.普洱茶茶色素提取工艺条件的响应面分析及其抗氧化性活性研究[J].食品科学,2011,32(6):1-6.YANG Xin-he,LI Qin,HUANG Jian-an,et al.Optimization of process conditions for pu-erh tea pigmentextraction by response surface analysis and its antioxidantactivity[J].Food Science,2011,32(6):1-6.(inChinese) [15] GUO J Q,LUO Y E,FAN D D,et al.Analysis ofmetabolic products by response surface methodology forproduction of human-like collagenⅡ[J].ChineseJournal of Chemical Engineering,2010,18(5):830-836.
[16] HUSSAIN S,AZIZ H A,ISA M H,et al.Orthophosphate removal from domestic wastewater usinglimestone and granular activated carbon[J].Desalination,2011,271(1-3):265-272.
[17] 汤鸿霄,栾兆坤.聚合氯化铝与传统混凝剂的凝聚-絮凝行为差异[J].环境化学,1997,16(6):497-504.TANG Hong-xiao,LUAN Zhao-kun.Condensation/flocculation behavior contrast of poly aluminum chlorideand orthodox flocculant[J].Environment Chemistry,1997,16(6):497-504.(in Chinese) [18] 朱哲,李涛,王东升,等.阳离子型聚丙烯酰胺投加量对絮体性状特征的影响[J].环境化学,2007,26(2):175-179.ZHU Zhe,LI Tao,WANG Dong-sheng,et al.Effect ofcationic PAM dosage on the micro-properties of flocs[J].Environment Chemistry,2007,26(2):175-179.(in Chinese) [19] 朱又春,曾胜.磁分离法处理餐饮污水的除油机理[J].中国给水排水,2002,18(7):39-41.ZHU You-chun,ZENG Sheng.Degreasing mechanism ofmagnetic separation for cateringsewage[J].China water&wastewater,2002,18(7):39-41.(in Chinese) [20] 杜海明,张发宇,吕凤明,等.磁絮凝-磁盘分离法处理巢湖富营养化水的试验研究[J].水处理技术,2009,35(5):86-90.DU Hai-ming,ZHANG Fa-yu,LFeng-ming,et al.Experimental study on magnetic flocculation-magnetic discseparation technique for Chaohu eutrophication of watertreatment[J].Technology of Water Treatment,2009,35(5):86-90.(in Chinese)
计量
- 文章访问数: 12
- HTML全文浏览量: 0
- PDF下载量: 6