聚合氯化铝混凝预处理高浓度涤纶废水
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摘要
以聚合氯化铝(PACl)作为混凝剂,采用混凝法处理高浓度(COD>50 000 mg/L)涤纶工业长丝生产废水,以降低废水的悬浮物、有机物含量和生物毒性,提高废水可生化性,以便后续采用生物法进一步处理。实验结果表明:PACl能够有效降低废水的浊度、COD、BOD5及生物毒性,其对浊度、COD、BOD5和生物毒性的最高去除率分别为99.9%、92.8%、91.2%和99.2%。此外,PACl可在一定程度上提高废水的可生化性,在其投加量为1 200 mg/L时,BOD5/COD值(0.13)可达到原水的1.75倍。综合考虑废水处理成本及污染物去除情况,PACl最佳投加量为1 000~1 500 mg/L。
Polyaluminum chloride(PACl) was used as coagulant to treat terylene industrial filament manufacturing wastewater containing high-concentration pollutants(COD > 50 000 mg/L) in order to decrease the concentrations of suspended solids and organic matters,and simultaneously to improve wastewater biodegradability. Experimental results showed that PACl could remove effectively turbidity,COD,BOD5and biological toxicity of the wastewater,and the highest removals of turbidity,COD,BOD5and biological toxicity were 99.9%,92.8%,91.2% and 99.2% respectively. In addition,PACl could improve wastewater biodegradability to some extent,and BOD5/COD value of the wastewater treated at the PACl dosage of 1 200 mg/L(0.13)was 1.75 times as much as that of the raw wastewater. The optimal PACl dosage was 1 000~1 500mg/L based on treatment cost of the wastewater and removal of the pollutants in wastewater.
Polyaluminum chloride(PACl) was used as coagulant to treat terylene industrial filament manufacturing wastewater containing high-concentration pollutants(COD > 50 000 mg/L) in order to decrease the concentrations of suspended solids and organic matters,and simultaneously to improve wastewater biodegradability. Experimental results showed that PACl could remove effectively turbidity,COD,BOD5and biological toxicity of the wastewater,and the highest removals of turbidity,COD,BOD5and biological toxicity were 99.9%,92.8%,91.2% and 99.2% respectively. In addition,PACl could improve wastewater biodegradability to some extent,and BOD5/COD value of the wastewater treated at the PACl dosage of 1 200 mg/L(0.13)was 1.75 times as much as that of the raw wastewater. The optimal PACl dosage was 1 000~1 500mg/L based on treatment cost of the wastewater and removal of the pollutants in wastewater.
引文
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[26]阮彩群,李冬梅,任毅.混凝法处理表面活性剂废水的水力影响[J].工业安全与环保,2010,36(5):11-13.Ruan Caiqun,Li Dongmei,Ren Yi.Effect of hydraulic cconditions on treatment of surfactant wastewater with coagulation method[J].Industrial Safety and Environmental Protection,2010,36(5):11-13(.in Chinese)
[27]Ganjar S,Sarwoko M.Review on BOD,COD and BOD/COD ratio:a triangle zone for toxic,biodegradable and stable levels[J].International Journal of Academic Research,2010,2(4):235-239.
[28]王奕.复台型生物膜反应器处理污水的研究[D].大连:大连理工大学,2002Wang Yi.Wastewater Treatment in a Hybrid Biological Reactor(HBR)[D].Dalian:Dalian University of Technology,2002(.in Chinese)
[29]J P Croué,E Lefebvre,B Martin,et al.Removal of dissolved hydrophobic and hydrophilic organic substances during coagulation/flocculation of surface waters[J].Water Science&Technology,1993,27(11):143-152.
[30]Dong Bingzhi,Chen Yan,Gao Naiyun,et al.Effect of coagulation pretreatment on the fouling of ultrafiltration membrane[J].Journal of Environmental Sciences,2007,19:278-283.
[31]Christian Volk,Kimberly Bell,Eva Ibrahim,et al.Impact of enhanced and optimized coagulation on removal of organic matter and its biodegradable fraction in drinking water[J].Water Research,2000,34(12):3247-3257.
[2]李善评,栾富波,张海新,等.超声波-接触氧化法处理涤纶废水[J].工业水处理,2006,26(4):41-43.Li Shanping,Luan Fubo,Zhang Haixing,et al.Treatment of terylene wastewater by ultrasonic-biological contact oxidation[J].Industrial Water Treatment,2006,26(4):41-43(.in Chinese)
[3]刘立凡,杜茂安,韩洪军.升流式厌氧污泥床(UASB)处理涤纶废水的研究[J].哈尔滨建筑大学学报,2000,33(2):62-65.Liu Lifan,Du Mao'an,Han Hongjun.Study on the treatment of terylene wastewater by upflow anerobic sludge blanket(UASB)reactor[J].Journal of Harbin University of Civil Engineering and Architecture,2000,33(2):62-65(.in Chinese)
[4]Ibrahim M I,Ahmed S F,Nabil M A,et al.El-Halwany combined coagulation flocculation pretreatment unit for municipal wastewater combined coagulation flocculation pre treatment unit for municipal wastewater[J].Journal of Advanced Research,2012,3(4):331-336.
[5]张衍,郑炜,刘锐,等.混凝-生物接触氧化处理合成橡胶碱洗废水[J].环境工程学报,2012,6(12):4355-4359.Zhang Yan,Zheng Wei,Liu Rui,et al.Treatment of alkaline wastewater from synthetic rubber production by coagulation and biological contact oxidation[J].Techniques and Equipment for Environmental Pollution Control,2012,6(12):4355-4359(.in Chinese)
[6]Manikavasagam K K,Nishant D,Pradyumna P,et al.Biodegradability enhancement of purified terephthalic acid wastewater by coagulation-flocculation process as pretreatment[J].Journal of Hazardous Materials,2008(154):721-730.
[7]Akshaya K V,Rajesh R D,Puspendu B.A review on chemical coagulation/flocculation technologies for removal of colour from textile wastewaters[J].Journal of Environmental Management,2012,93(1):154-168.
[8]Xie W M,Wang Q H,Ma H Z,et al.Study on phosphorus removal using a coagulation system[J].Process Biochemistry,2005,40(8):2623-2627.
[9]Ebeling J M,Welsh C F,Rishel K L.Performance evaluation of an inclined belt filter using coagulation/flocculation aids for the removal of suspended solids and phosphorus from microscreen backwash effluent[J].Aquacultural Engineering,2006,35(1):61-77.
[10]Han B,Runnellsb T,Zimbronb J,et al.Arsenic removal from drinking water by flocculation and microfiltration[J].Desalination,2002,145:293-298.
[11]Bayat O,Arslan V,Bayat B,et al.Application of a flocculation-ultrafiltration process for bacteria(Desulfovibrio desulfuricans)removal from industrial plant process water[J].Biochemical Engineering Journal,2004,18:105-110.
[12]Bratskaya S,Avramenko V,Schwarz S,et al.Enhanced flocculation of oil-in-water emulsions by hydrophobically modified chitosan derivatives[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2006,275(1/2/3):168-176.
[13]周秀凤.化纤废水处理方法综述[J].化工文摘,2007(4):52-55.Zhou Xiufeng.Treatment of wastewater from chemical fiber industry[J].China Chemicals,2007(4):52-55(.in Chinese)
[14]Wobma P C,Pernitsky D,Kjartanson K,et al.Dissolved air flotation vs direct filtration for a low turbidity,high algae surface water[J].AWWA Water Quality Technology Conference,New Orleans,LA,1995.
[15]Eikebrokk B.Removal of Humic Substances by Coagulation[A].In Hahn HH,Hoffmann E.(Eds):Chemical Water and Wastewater Treatment V[C].Springer Verlag,Berlin Heidelberg,1996:173-187.
[16]Dongsheng W,Wei S,Yi Xu,et al.Speciation stability of inorganic polymer flocculant-PACl[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2004,243(1/2/3,20):1-10.
[17]周本省.工业水处理技术[M].北京:化学工业出版社,2009.Zhou Bensheng.Industrial Water Treatment Technology[M].Beijing:Chemical Industry Press,2009.(in Chinese)
[18]周玲玲,张永吉,孙丽华,等.铁盐和铝盐混凝对水中天然有机物的去除特性研究[J].环境科学,2008,29(5):1187-1191.Zhou Lingling,Zhang Yongji,Sun Lihua,et al.Characteristic of natural organic matter removal by ferric and aluminiumin coagulation[J].Environmental Science,2008,29(5):1187-1191(.in Chinese)
[19]Ye C Q,Wang D S,Shi B Y,et al.Alkalinity effect of coagulation with polyaluminum chlorides:role of electrostatic patch[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2007,294(1/2/3):163-173.
[20]Yoo Eun-Sun,Yoon In-Mo.Study of coagulant development and the characteristics for the treatment of tire remanufacturing wastewater[J].Key Engineering Materials,2005,(277/278/279):510-516.
[21]漆文光,陆少鸣,杨立.对比COD与CODMn分析大分子有机物在给水处理系统中的去除与转化关系[J].水处理技术,2006,32(4):39-42.
[22]Bulich A A.A practical and reliable for monitoring the toxicity of aquatic sample[J].Process Biochemistry,1982,17(2):45-47.
[23]方战强,李友明,曾志勇.发光细菌法研究纸浆CEH漂白废水的毒性[J].华南师范大学学报:自然科学版,2004(4):84-88.Fang Zhanqiang,Li Youming,Zeng Zhiyong.Toxicity study on the photobacterium phosphoreum toxicity test method for pulp CEH bleaching effluents[J].Journal of South China Normal University:Natural Science,2004(4):84-88(.in Chinese)
[24]王丽莎,魏东斌,胡洪营.发光细菌毒性测试条件的优化与毒性参照物的应用[J].环境科学研究,2004,17(4):61-63.Wang Lisha,Wei Dongbin,Hu Hongying.Optimization of luminescent bacteria toxicity test and application of toxicity reference substance[J].Research of Environmental Science,2004,17(4):61-63(.in Chinese)
[25]王学川,邱白玉.表面活性剂的毒性问题[J].日用化学品科学,2005,28(6):22-26.Wang Xuechuan,Qiu Baiyu.Problems of surfactants'toxicity[J].Detergent&Cosmetics,2005,28(6):22-26(.in Chinese)
[26]阮彩群,李冬梅,任毅.混凝法处理表面活性剂废水的水力影响[J].工业安全与环保,2010,36(5):11-13.Ruan Caiqun,Li Dongmei,Ren Yi.Effect of hydraulic cconditions on treatment of surfactant wastewater with coagulation method[J].Industrial Safety and Environmental Protection,2010,36(5):11-13(.in Chinese)
[27]Ganjar S,Sarwoko M.Review on BOD,COD and BOD/COD ratio:a triangle zone for toxic,biodegradable and stable levels[J].International Journal of Academic Research,2010,2(4):235-239.
[28]王奕.复台型生物膜反应器处理污水的研究[D].大连:大连理工大学,2002Wang Yi.Wastewater Treatment in a Hybrid Biological Reactor(HBR)[D].Dalian:Dalian University of Technology,2002(.in Chinese)
[29]J P Croué,E Lefebvre,B Martin,et al.Removal of dissolved hydrophobic and hydrophilic organic substances during coagulation/flocculation of surface waters[J].Water Science&Technology,1993,27(11):143-152.
[30]Dong Bingzhi,Chen Yan,Gao Naiyun,et al.Effect of coagulation pretreatment on the fouling of ultrafiltration membrane[J].Journal of Environmental Sciences,2007,19:278-283.
[31]Christian Volk,Kimberly Bell,Eva Ibrahim,et al.Impact of enhanced and optimized coagulation on removal of organic matter and its biodegradable fraction in drinking water[J].Water Research,2000,34(12):3247-3257.