絮凝法预处理含酚高浓度有机废水
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摘要
采用聚合氯化铝铁(PAFC)分别与3种电荷类型聚丙烯酰胺(阳离子聚丙烯酰胺(CPAM)、阴离子聚丙烯酰胺(APAM)、非离子聚丙烯酰胺(NPAM))复配对含酚高浓度有机废水进行预处理,重点探讨复配絮凝剂对浊度、总酚和化学耗氧量(COD)的去除效果。对3种电荷类型有机絮凝剂进行筛选,研究结果证明PAFC与CPAM复配后絮凝效果最优。采用单因素试验和正交试验探讨PAFC投加量、CPAM投加量、pH和水力条件对含酚高浓度有机废水絮凝预处理效果的影响。结果表明:在pH为5、PAFC为1. 5 g/L和CPAM为20 mg/L,以300 r/min快速搅拌1 min和50 r/min慢速搅拌10 min时处理效果最佳,对浊度、总酚和COD最佳去除率分别为99. 1%、37. 5%和51. 4%。
The organic wastewater with high concentration chemical oxygen demand( COD) and phenol was pretreated by poly aluminum chloride iron( PAFC) and three charge types of polyacrylamide( cationic polyacrylamide( CPAM),anionic polyacrylamide( APAM),and nonionic polyacrylamide( NPAM)) with the emphasis on the removal efficiency of turbidity,total phenols and COD. Three kinds of organic flocculants were screened and cationic polyacrylamide( CPAM) was selected to be complexed with PAFC.The effects of dosage of PAFC,dosage of CPAM,pH and hydraulic condition were investigated by single factor experiments and orthogonal experiments.Results showed that when the p H was 5,1. 5 g/L PAFC and 20 mg/L CPAM were added,and the mixture was stirred at 300 r/min for 1 min and 50 r/min for 10 min,the removal rates of turbidity,total phenols and COD were 99. 1%,37. 5% and 51. 4%,respectively.
The organic wastewater with high concentration chemical oxygen demand( COD) and phenol was pretreated by poly aluminum chloride iron( PAFC) and three charge types of polyacrylamide( cationic polyacrylamide( CPAM),anionic polyacrylamide( APAM),and nonionic polyacrylamide( NPAM)) with the emphasis on the removal efficiency of turbidity,total phenols and COD. Three kinds of organic flocculants were screened and cationic polyacrylamide( CPAM) was selected to be complexed with PAFC.The effects of dosage of PAFC,dosage of CPAM,pH and hydraulic condition were investigated by single factor experiments and orthogonal experiments.Results showed that when the p H was 5,1. 5 g/L PAFC and 20 mg/L CPAM were added,and the mixture was stirred at 300 r/min for 1 min and 50 r/min for 10 min,the removal rates of turbidity,total phenols and COD were 99. 1%,37. 5% and 51. 4%,respectively.
引文
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[23]HAN H,LI H,DU M,et al.Study on post-treatment of coal gasification wastewater by coagulation[J].Energy Procedia,2011,11(1):3970.
[24]杨红梅,谷晋川,张德航,等.PAC与PAM复合絮凝剂处理泡菜废水[J].土木建筑与环境工程,2017,39(4):95.
[2]LI H Q,HAN H J,DU M A,et al.Removal of phenols,thiocyanate and ammonium from coal gasification wastewater using moving bed biofilm reactor[J].Bioresource Technology,2011,102(7):4667.
[3]CUI P Z,MAI Z H,YANG S Y,et al.Integrated treatment processes for coal-gasi cation wastewater with high concentration of phenol and ammonia[J].Journal of Cleaner Production,2017,142:2218.
[4]王方朝,张宁,朱建航,等.生物质基活性炭处理含酚废水研究进展[J].水处理技术,2017,43(7):17.
[5]YANG C,YANG S,QIAN Y,et al.Simulation and operation cost estimate for phenol extraction and solvent recovery process of coal-gasification wastewater[J].Industrial&Engineering Chemistry Research,2013,52(34):12108.
[6]HAN H J,ZHAO Q,XU C Y,et al.Coal gasification wastewater pretreatment with coagulation and N2flotation combined system[J].Journal of Harbin Institute of Technology,2013,20(5):20.
[7]连国奇,仝双梅.复合絮凝法预处理高浓度煤化工废水影响因素研究[J].现代化工,2017,37(9):139.
[8]付强强,盖恒军.溴化容量法测定煤化工废水中总酚含量的准确度分析[J].煤化工,2016,44(3):55.
[9]权攀,陆曦,党孟辉,等.褐煤气化废水的物化预处理[J].南京工业大学学报(自然科学版),2015,37(4):129.
[10]李志敏,敖宁建.PAFC/CTS/红粘土复合絮凝剂对天然胶乳废水的处理[J].环境科学与技术,2013,36(7):93.
[11]张文德,李健美,谭颖,等.水分散型阳离子聚丙烯酰胺在造纸废水处理中的应用[J].工业水处理,2013,33(1):56.
[12]刘娟,武耀锋,张晓慷.水分散型阳离子聚丙烯酰胺絮凝剂的絮凝性能及其机理[J].环境工程学报,2015,9(1):119.
[13]王茂玉.复配体系絮凝剂处理炼油废水的试验研究[J].工业水处理,2011,31(12):53.
[14]徐楠,孙文全,孙永军,等.混凝法去除水中Ti O2纳米颗粒[J].土木建筑与环境工程,2017,39(4):89.
[15]朱小冬,贠延滨,马青青,等.化学絮凝法和微电解法预处理酯化废水研究[J].环境工程,2016,34(s1):373.
[16]张水燕,陈昌华,李增强,等.不同电荷的聚丙烯酰胺对焦化废水的絮凝性能研究[J].环境工程,2011,29(1):67.
[17]连国奇,仝双梅.复合絮凝法预处理高浓度煤化工废水影响因素研究[J].现代化工,2017,37(9):139.
[18]WANG Y,CHEN K,MO L,et al.Pretreatment of papermakingreconstituted tobacco slice wastewater by coagulation-flocculation[J].Journal of Applied Polymer Science,2013,130(2):1092.
[19]冯一伟,柴涛.酸化-复合絮凝法预处理煤化工废水[J].环境工程学报,2016,10(3):1310.
[20]马正先,佟明煜,朴正武.pH对煤泥水絮凝沉降的影响[J].环境工程学报,2010,4(3):487.
[21]YAN L,WANG Y,LI J,et al.Preparation of polymeric aluminum ferric chloride(PAFC)coagulant from fly ash for the treatment of coal-washing wastewater[J].Desalination&Water Treatment,2016,112(3):1.
[22]吴锦华,方一莉,江燕斌,等.PAC混凝法去除煤化工废水中难降解组分及其可生化性提高研究[J].环境工程,2017,35(2):15.
[23]HAN H,LI H,DU M,et al.Study on post-treatment of coal gasification wastewater by coagulation[J].Energy Procedia,2011,11(1):3970.
[24]杨红梅,谷晋川,张德航,等.PAC与PAM复合絮凝剂处理泡菜废水[J].土木建筑与环境工程,2017,39(4):95.
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