赤泥基PAFC协同混凝印染污水的试验研究（英文）
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摘要
利用赤泥所含有的Fe、Al等具有净水作用的元素,制备出Fe_2O_3含量>5.1%、Al_2O_3含量>6.5%、碱度>65%的赤泥基PAFC,考察了赤泥基PAFC对印染污水zeta电位的影响。对赤泥基聚合氯化铝铁(PAFC)、聚合氯化铝(PAC)、聚合氯化铁(PFC)和聚合硫酸铁(PFS)在印染污水处理中进行混凝对比的研究表明,赤泥基PAFC在色度和COD去除率方面明显优于同类产品。进一步对比研究PAFC和PFS协同混凝的效果,优化出赤泥基PAFC正向协同混凝PFS,按照2.5:1的投料比,可进一步降低印染污水COD去除率,达到国家1级A的标准,很好地解决了印染污水外排不达标的难题。
Considering that Fe, Al elements in bauxite residue are active components for water purification, an effective polyaluminum ferric chloride(PAFC) coagulant derived from bauxite residue, with Fe_2O_3 content > 5.1%, Al_2O_3 % >6.5%, basicity > 65%, was successfully prepared. The effect of as-prepared PAFC on the zeta potential for printing and dyeing wastewater was investigated. Comparing with polyferric chloride(PFC) and polyferric sulfate(PFS) for printing and dyeing wastewater treatment, prepared bauxite residue-based PAFC exhibited the optimal performance in the aspects of chromaticity and chemical oxygen demand(COD) removal rate. Furthermore, the combination of bauxite residue-based PAFC and PFS for synergy coagulation of such wastewater demonstrated an obvious positive effect. With the proportion between as-prepared PAFC and PFS to be 2.5:1, the COD of treated wastewater could be further reduced to meet the national level A standard of China, providing a promising route to solve the problem of substandard printing and dyeing sewage outfall by a simple coagulation strategy.
Considering that Fe, Al elements in bauxite residue are active components for water purification, an effective polyaluminum ferric chloride(PAFC) coagulant derived from bauxite residue, with Fe_2O_3 content > 5.1%, Al_2O_3 % >6.5%, basicity > 65%, was successfully prepared. The effect of as-prepared PAFC on the zeta potential for printing and dyeing wastewater was investigated. Comparing with polyferric chloride(PFC) and polyferric sulfate(PFS) for printing and dyeing wastewater treatment, prepared bauxite residue-based PAFC exhibited the optimal performance in the aspects of chromaticity and chemical oxygen demand(COD) removal rate. Furthermore, the combination of bauxite residue-based PAFC and PFS for synergy coagulation of such wastewater demonstrated an obvious positive effect. With the proportion between as-prepared PAFC and PFS to be 2.5:1, the COD of treated wastewater could be further reduced to meet the national level A standard of China, providing a promising route to solve the problem of substandard printing and dyeing sewage outfall by a simple coagulation strategy.
引文
[1]LI Xiao-fei,YE Yu-zhen,XUE Sheng-guo,JIANG Jun,WUChuan,KONG Xiang-feng,HARTLEY W,LI Yi-wei.Leaching optimization and dissolution behavior of alkaline anions in bauxite residue[J].Transactions of Nonferrous Metals Society of China,2018,28(6):1248-1255.DOI:10.1016/S1003-6326(18)64763-6.
[2]LIU Gui-hua,WU Guo-yu,JIANG Hai-lang,QI Tian-gui,PENG Zhi-hong,ZHOU Qiu-sheng,LI Xiao-bin.Safe utilization of chromium-bearing vanadate residue by recovery of vanadium and chromium based on calcium circulation[J].Journal of Central South University,2018,25:2349-2359.DOI:org/10.1007/s11771-018-3919-0.
[3]LIAO Jia-xin,JIANG Jun,XUE Sheng-guo,CHENG Qingyu,WU Hao,RAJENDRAN M,HARTLEY W,HUANGLong-bin.A novel acid-producing fungus isolated from bauxite residue:The potential to reduce the alkalinity[J].Geomicrobiology Journal,2018,35(10):840-847.DOI:10.1080/01490451.2018.1479807.
[4]CRAMER A J,COLE J M.Removal or storage of environmental pollutants and alternative fuel sources with inorganic adsorbents via host-guest encapsulation[J].Journal of Materials Chemistry A,2017,5(22):10746-10771.DOI:10.1039/C7TA02401K.
[5]KONG Xiang-feng,JIANG Xing-xing,XUE Sheng-guo,HUANG Ling,HARTLEY W,WU Chuan,LI Xiao-fei.Migration and distribution of saline ions in bauxite residue during water leaching[J].Transactions of Nonferrous Metals Society of China,2018,28(3):534-541.DOI:10.1016/S1003-6326(18)64686-2.
[6]MEHMET K,ORHAN T C,MAHMUT B.Treatment of textile wastewaters by electrocoagulation using iron and aluminum electrodes J].Journal of Hazardous Materials,2003,100:163-178.DOI:org/10.1016/S0304-3894(03)00102-X.
[7]XUE Sheng-guo,LI Meng,JIANG Jun,MILLAR G J,LIChu-xuan,KONG Xiang-feng.Phosphogypsum stabilization of bauxite residue:Conversion of its alkaline characteristics[J].Journal of Environmental Sciences,2019,77:1-10.DOI:10.1016/j.jes.2018.05.016.
[8]WANG Xin-ke,ZHANG Yi-he,LU Rong-rong,ZHOUFeng-shan,AN Qi,MENG Zi-lin,FEI Bin,LV Feng-zhu.Novel multiple coagulant from Bayer red mud for oily sewage treatment,Desalination and Water Treatment[J].Journal of Water Process Engineering,2015,6:158-165.DOI:org/10.1016/j.jwpe.2015.04.003.
[9]KONG Xiang-Feng,TIAN Tao,XUE Sheng-guo,HARTLEY W,HUANG Long-bin,WU Chuan,LI Chu-xuan.Development of alkaline electrochemical characteristics demonstrates soil formation in bauxite residue undergoing natural rehabilitation[J].Land Degradation and Development,2018,29(1):58-67.DOI:10.1002/ldr.2836.
[10]XUE Sheng-guo,YE Yu-zhen,ZHU Feng,WANG Qiong-li,JIANG Jun,HARTLEY W.Changes in distribution and microstructure of bauxite residue aggregates following amendments addition[J].Journal of Environmental Sciences,2019,78:276-286.DOI:10.1016/j.jes.2018.10.010.
[11]ZHU Feng,CHENG Qing-yu,XUE Sheng-guo,LI Chu-xuan,HARTLEY W,WU Chuan,TIAN Tao.Influence of natural regeneration on fractal features of residue microaggregates in bauxite residue disposal areas[J].Land Degradation and Development,2018,29(1):138-149.DOI:10.1002/ldr.2848.
[12]ZHU Feng,LIAO Jia-xin,XUE Sheng-guo,HARTLEY W,ZOU Qi,WU Hao.Evaluation of aggregate microstructures following natural regeneration in bauxite residue as characterized by synchrotron-based X-ray micro-computed tomography[J].Science of the Total Environment,2016,573:155-163.DOI:10.1016/j.scitotenv.2016.08.108.
[13]ZHU Feng,LI Yu-bing,XUE Sheng-guo,HARTLEY W,WU Hao.Effects of iron-aluminium oxides and organic carbon on aggregate stability of bauxite residues[J].Environmental Science and Pollution Research,2016,23(9):9073-9081.DOI:10.1007/s11356-016-6172-9.
[14]WU Chuan,SHI Li-zheng,XUE Sheng-guo,LI Wai-chin,JIANG Xing-xing,RAJENDRAN M,QIAN Zi-yan.Effect of sulfur-iron modified biochar on the available cadmium and bacterial community structure in contaminated soils[J].Science of the Total Environment,2019,647:1158-1168.DOI:10.1016/j.scitotenv.2018.08.087.
[15]WANG Jun,CHENG Qing-yu,XUE Sheng-guo,RAJENDRAN M,WU Chuan,LIAO Jia-xin.Pollution characteristics of surface runoff under different restoration types in manganese tailing wasteland[J].Environmental Science and Pollution Research,2018,10:9998-10005.DOI:10.1007/s11356-018-1338-2.
[16]XUE Sheng-guo,WU Yu-jun,LI Yi-wei,KONG Xiang-feng,ZHU Feng,HARTLEY W,LI Xiao-fei,YE Yu-zhen.Industrial waste applications for alkalinity regulation in bauxite residue:A comprehensive review[J].Journal of Central South University,2019,26(2):268-288.
[17]ZHOU Lyu,ZHOU Hong-jie,YANG Xiao-yu.Preparation and performance of a novel starch-based inorganic/organic composite coagulant for textile wastewater treatment[J].Separation and Purification Technology,2019,210:93-99.DOI:org/10.1016/j.seppur.2018.07.089.
[18]LIANG Yan-ling,KRAUS T E C,SILVA L C R,BACHAND P A M,BACHAND S M,DOANE T A,HORWATHA W R.Effects of ferric sulfate and polyaluminum chloride coagulation enhanced treatment wetlands on Typha growth,soil and water chemistry[J].Science of the Total Environment,2019,648:116-124.DOI:org/10.1016/j.scitotenv.2018.07.341.
[19]WANG Qi,LUAN Zhao-kun,WEI Ning,LI Jin,LIUCheng-xi.The color removal of dye wastewater by magnesium chloride/red mud(MRM)from aqueous solution[J].Journal of Hazardous Materials,2009,170:690-698.DOI:org/10.1016/j.jhazmat.2009.05.011.
[20]NI Fan,HE Jin-song,WANG Yan-bin,LUAN Zhao-kun,Preparation and characterization of a cost-effective red mud/polyaluminum chloride composite coagulant for enhanced phosphate removal from aqueous solutions[J].Journal of Water Process Engineering,2015,6:158-165.DOI:org/10.1016/j.jwpe.2015.04.003.
[21]EL-GOHARY F,TAWFIK A.Decolorization and CODreduction of disperse and reactive dyes wastewater using chemical-coagulation followed by sequential batch reactor(SBR)process[J].Desalination,2009,249(3):1159-1164.DOI:org/10.1016/j.desal.2009.05.010.
[22]KOBYA M,ONCEL M S,DEMIRBA E,?IKB E,AKYOLA,INCE M.The application of electrocoagulation process for treatment of the red mud dam wastewater from Bayer’s process[J].Journal of Environmental Chemical Engineering,2014,2(4):2211-2220.DOI:org/10.1016/j.jece.2014.09.008.
[23]OLIVEIRAA A A S,TEIXEIRAA I F,CHRISTOFANIA TA I S,TRIST?OB J C,GUIMAR?ESC I R,MOURA F C C.Biphasic oxidation reactions promoted by amphiphilic catalysts based on red mud residue[J].Applied Catalysis B:Environmental,2014,144:144-151.DOI:org/10.1016/j.apcatb.2013.07.015.
[24]BENTOA N I,SANTOSA P S C,de SOUZAB T E,OLIVEIRAB L C A,CASTRO C S.Composites based on PET and red mud residues as catalyst for organic removal from water[J].Journal of Hazardous Materials,2016,314:304-311.DOI:org/10.1016/j.jhazmat.2016.04.066.
[25]CRINI G.Non-conventional low-cost adsorbents for dye removal:A review[J].Bioresource Technology,2006,97(9):1061-1085.DOI:org/10.1016/j.biortech.2005.05.001.
[26]KAZAK O,TOR A,AKINB I,ARSLANC G.Preparation and characterization of novel polysulfone-red mud composite capsules for the removal of fluoride from aqueous solutions[J].RSC Advances,2016,6(89):86673-86681.DOI:10.1039/C6RA12055E.
[27]WANG Shao-bin,ANG T H M,TADE M O.Novel applications of red mud as coagulant,adsorbent and catalyst for environmentally benign processes[J].Chemosphere,2008,72:1621-1635.DOI:org/10.1016/j.chemosphere.2008.05.013.
[28]YANG Cong-ren,JIAO Fen,QIN Wen-qing.Leaching of chalcopyrite:An emphasis on effect of copper and iron ions[J].Journal of Central South University,2018,25:2380-2386.DOI:org/10.1007/s11771-018-3922-5.
[2]LIU Gui-hua,WU Guo-yu,JIANG Hai-lang,QI Tian-gui,PENG Zhi-hong,ZHOU Qiu-sheng,LI Xiao-bin.Safe utilization of chromium-bearing vanadate residue by recovery of vanadium and chromium based on calcium circulation[J].Journal of Central South University,2018,25:2349-2359.DOI:org/10.1007/s11771-018-3919-0.
[3]LIAO Jia-xin,JIANG Jun,XUE Sheng-guo,CHENG Qingyu,WU Hao,RAJENDRAN M,HARTLEY W,HUANGLong-bin.A novel acid-producing fungus isolated from bauxite residue:The potential to reduce the alkalinity[J].Geomicrobiology Journal,2018,35(10):840-847.DOI:10.1080/01490451.2018.1479807.
[4]CRAMER A J,COLE J M.Removal or storage of environmental pollutants and alternative fuel sources with inorganic adsorbents via host-guest encapsulation[J].Journal of Materials Chemistry A,2017,5(22):10746-10771.DOI:10.1039/C7TA02401K.
[5]KONG Xiang-feng,JIANG Xing-xing,XUE Sheng-guo,HUANG Ling,HARTLEY W,WU Chuan,LI Xiao-fei.Migration and distribution of saline ions in bauxite residue during water leaching[J].Transactions of Nonferrous Metals Society of China,2018,28(3):534-541.DOI:10.1016/S1003-6326(18)64686-2.
[6]MEHMET K,ORHAN T C,MAHMUT B.Treatment of textile wastewaters by electrocoagulation using iron and aluminum electrodes J].Journal of Hazardous Materials,2003,100:163-178.DOI:org/10.1016/S0304-3894(03)00102-X.
[7]XUE Sheng-guo,LI Meng,JIANG Jun,MILLAR G J,LIChu-xuan,KONG Xiang-feng.Phosphogypsum stabilization of bauxite residue:Conversion of its alkaline characteristics[J].Journal of Environmental Sciences,2019,77:1-10.DOI:10.1016/j.jes.2018.05.016.
[8]WANG Xin-ke,ZHANG Yi-he,LU Rong-rong,ZHOUFeng-shan,AN Qi,MENG Zi-lin,FEI Bin,LV Feng-zhu.Novel multiple coagulant from Bayer red mud for oily sewage treatment,Desalination and Water Treatment[J].Journal of Water Process Engineering,2015,6:158-165.DOI:org/10.1016/j.jwpe.2015.04.003.
[9]KONG Xiang-Feng,TIAN Tao,XUE Sheng-guo,HARTLEY W,HUANG Long-bin,WU Chuan,LI Chu-xuan.Development of alkaline electrochemical characteristics demonstrates soil formation in bauxite residue undergoing natural rehabilitation[J].Land Degradation and Development,2018,29(1):58-67.DOI:10.1002/ldr.2836.
[10]XUE Sheng-guo,YE Yu-zhen,ZHU Feng,WANG Qiong-li,JIANG Jun,HARTLEY W.Changes in distribution and microstructure of bauxite residue aggregates following amendments addition[J].Journal of Environmental Sciences,2019,78:276-286.DOI:10.1016/j.jes.2018.10.010.
[11]ZHU Feng,CHENG Qing-yu,XUE Sheng-guo,LI Chu-xuan,HARTLEY W,WU Chuan,TIAN Tao.Influence of natural regeneration on fractal features of residue microaggregates in bauxite residue disposal areas[J].Land Degradation and Development,2018,29(1):138-149.DOI:10.1002/ldr.2848.
[12]ZHU Feng,LIAO Jia-xin,XUE Sheng-guo,HARTLEY W,ZOU Qi,WU Hao.Evaluation of aggregate microstructures following natural regeneration in bauxite residue as characterized by synchrotron-based X-ray micro-computed tomography[J].Science of the Total Environment,2016,573:155-163.DOI:10.1016/j.scitotenv.2016.08.108.
[13]ZHU Feng,LI Yu-bing,XUE Sheng-guo,HARTLEY W,WU Hao.Effects of iron-aluminium oxides and organic carbon on aggregate stability of bauxite residues[J].Environmental Science and Pollution Research,2016,23(9):9073-9081.DOI:10.1007/s11356-016-6172-9.
[14]WU Chuan,SHI Li-zheng,XUE Sheng-guo,LI Wai-chin,JIANG Xing-xing,RAJENDRAN M,QIAN Zi-yan.Effect of sulfur-iron modified biochar on the available cadmium and bacterial community structure in contaminated soils[J].Science of the Total Environment,2019,647:1158-1168.DOI:10.1016/j.scitotenv.2018.08.087.
[15]WANG Jun,CHENG Qing-yu,XUE Sheng-guo,RAJENDRAN M,WU Chuan,LIAO Jia-xin.Pollution characteristics of surface runoff under different restoration types in manganese tailing wasteland[J].Environmental Science and Pollution Research,2018,10:9998-10005.DOI:10.1007/s11356-018-1338-2.
[16]XUE Sheng-guo,WU Yu-jun,LI Yi-wei,KONG Xiang-feng,ZHU Feng,HARTLEY W,LI Xiao-fei,YE Yu-zhen.Industrial waste applications for alkalinity regulation in bauxite residue:A comprehensive review[J].Journal of Central South University,2019,26(2):268-288.
[17]ZHOU Lyu,ZHOU Hong-jie,YANG Xiao-yu.Preparation and performance of a novel starch-based inorganic/organic composite coagulant for textile wastewater treatment[J].Separation and Purification Technology,2019,210:93-99.DOI:org/10.1016/j.seppur.2018.07.089.
[18]LIANG Yan-ling,KRAUS T E C,SILVA L C R,BACHAND P A M,BACHAND S M,DOANE T A,HORWATHA W R.Effects of ferric sulfate and polyaluminum chloride coagulation enhanced treatment wetlands on Typha growth,soil and water chemistry[J].Science of the Total Environment,2019,648:116-124.DOI:org/10.1016/j.scitotenv.2018.07.341.
[19]WANG Qi,LUAN Zhao-kun,WEI Ning,LI Jin,LIUCheng-xi.The color removal of dye wastewater by magnesium chloride/red mud(MRM)from aqueous solution[J].Journal of Hazardous Materials,2009,170:690-698.DOI:org/10.1016/j.jhazmat.2009.05.011.
[20]NI Fan,HE Jin-song,WANG Yan-bin,LUAN Zhao-kun,Preparation and characterization of a cost-effective red mud/polyaluminum chloride composite coagulant for enhanced phosphate removal from aqueous solutions[J].Journal of Water Process Engineering,2015,6:158-165.DOI:org/10.1016/j.jwpe.2015.04.003.
[21]EL-GOHARY F,TAWFIK A.Decolorization and CODreduction of disperse and reactive dyes wastewater using chemical-coagulation followed by sequential batch reactor(SBR)process[J].Desalination,2009,249(3):1159-1164.DOI:org/10.1016/j.desal.2009.05.010.
[22]KOBYA M,ONCEL M S,DEMIRBA E,?IKB E,AKYOLA,INCE M.The application of electrocoagulation process for treatment of the red mud dam wastewater from Bayer’s process[J].Journal of Environmental Chemical Engineering,2014,2(4):2211-2220.DOI:org/10.1016/j.jece.2014.09.008.
[23]OLIVEIRAA A A S,TEIXEIRAA I F,CHRISTOFANIA TA I S,TRIST?OB J C,GUIMAR?ESC I R,MOURA F C C.Biphasic oxidation reactions promoted by amphiphilic catalysts based on red mud residue[J].Applied Catalysis B:Environmental,2014,144:144-151.DOI:org/10.1016/j.apcatb.2013.07.015.
[24]BENTOA N I,SANTOSA P S C,de SOUZAB T E,OLIVEIRAB L C A,CASTRO C S.Composites based on PET and red mud residues as catalyst for organic removal from water[J].Journal of Hazardous Materials,2016,314:304-311.DOI:org/10.1016/j.jhazmat.2016.04.066.
[25]CRINI G.Non-conventional low-cost adsorbents for dye removal:A review[J].Bioresource Technology,2006,97(9):1061-1085.DOI:org/10.1016/j.biortech.2005.05.001.
[26]KAZAK O,TOR A,AKINB I,ARSLANC G.Preparation and characterization of novel polysulfone-red mud composite capsules for the removal of fluoride from aqueous solutions[J].RSC Advances,2016,6(89):86673-86681.DOI:10.1039/C6RA12055E.
[27]WANG Shao-bin,ANG T H M,TADE M O.Novel applications of red mud as coagulant,adsorbent and catalyst for environmentally benign processes[J].Chemosphere,2008,72:1621-1635.DOI:org/10.1016/j.chemosphere.2008.05.013.
[28]YANG Cong-ren,JIAO Fen,QIN Wen-qing.Leaching of chalcopyrite:An emphasis on effect of copper and iron ions[J].Journal of Central South University,2018,25:2380-2386.DOI:org/10.1007/s11771-018-3922-5.
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