地下水PRB原位生物修复中一种释氧材料的改进技术及效果分析
|
摘要
释氧材料经济有效的释氧是地下水原位生物修复的关键因素。实验通过在释氧材料中加入膨润土、磷酸二氢钾和硫酸铵等,改进释氧材料的性能。柱实验结果显示,该释氧材料释氧速率缓慢,释氧时间长,可以使溶液中DO长期保持在5 mg/L以上;另外,释氧材料中添加的缓冲剂及天然含水层介质对pH值有较好的缓冲作用,可以使pH值达到后续生物修复的要求。
It is an important factor if the oxygen-releasing material could release oxygen continuously and economically upon contact with water in situ polluted groundwater bioremediation.The experiment was intended for improving property of oxygen-releasing material through adding bentonite,KH2PO4 and(NH4)2SO4 into calcium peroxide(CaO2).The results of the continuous column experiment show that the oxygen-releasing material could decrease O2-releasing rate and lengthen O2-releasing duration.The DO can retain more than 5 mg/L for long time.In addition,KH2PO4,(NH4)2SO4 and the natural aquifer can better buffer pH and meet the need of bioremediation.
It is an important factor if the oxygen-releasing material could release oxygen continuously and economically upon contact with water in situ polluted groundwater bioremediation.The experiment was intended for improving property of oxygen-releasing material through adding bentonite,KH2PO4 and(NH4)2SO4 into calcium peroxide(CaO2).The results of the continuous column experiment show that the oxygen-releasing material could decrease O2-releasing rate and lengthen O2-releasing duration.The DO can retain more than 5 mg/L for long time.In addition,KH2PO4,(NH4)2SO4 and the natural aquifer can better buffer pH and meet the need of bioremediation.
引文
[1]郝华.我国城市地下水污染状况与对策研究.水利发研究,2004,4(3):23-25Hao H.Study on groundwater pollution in cities of ourcountry.Water Resources Development Research,2004,4(3):23-25(in Chinese)
[2]Grete Rasmussen,Gro Fremmersvik,Rolf A.Olse.Treat-ment of creosote-contaminated groundwater in a peat/sandpermeable barrier—A column study.Journal of HazardousMaterials,2002,93(3):285-306
[3]Seunghak L.,Kwanghun L.,Sungsu R.,et al.Develop-ment of a new zero-valent iron zeolite material to reducenirate without ammonium release.Environmental Engineer-ing,2007,133(1):6-12
[4]Carsten Vogt,Albin Alfreider,Helmut Lorbeer,et al.Bioremediation of chlorobenzene-contaminated groundwaterin an in situ reactor mediated by hydrogen peroxide.Con-taminant Hydrology,2004,68:121-141
[5]谢李,刘菲,刘玉龙.释氧渗透反应格栅填料的改进研究.环境科学与技术,2010,33(2):44-48Xie L,Liu F,Liu Y L.Improving Property of filler in oxy-gen-releasing permeable reactive barrier.EnvironmentalScience&Technology,2010,33(2):44-48(in Chinese)
[6]Kao C.M.,Chen S.C.,Su M.C.Laboratory column stud-ies for evaluating a barrier system for providing oxygen andsubstrate for TCE biodegradation.Chemosphere,2001,44(5):925-934
[7]Liu C.Y.,Speitel G.E.,Georgiou G.Kinetics of methylt-butyl ether cometabolism at low concentrations by purecultures of butane-degrading bacteria.Applied and Envi-ronmental Microbiology,2001,67(5):2197-2201
[8]Prince R.C.Biodegradation of methyl tertiary-butyl ether(MTBE)and other fuel oxygenates.Critical Reviews inMicrobiology,2000,26(3):163-178
[9]Kao C.M.,Chen S.C.,Wang J.Y.,et al.Remediationof PCE contaminated aquifer by an in situ two-layer biobar-rier:laboratory batch and column studies.Water Re-search,2003,37(1):27-38
[10]潘炎烽,谢丽华,周春晖,等.吸附性矿物膨润土对肥料控释作用初探.浙江工业大学学报,2006,34(4):393-397Pan Y.F.,Xie L.H.,Zhou C.H.,et al.Preliminarystudy on features of controlled release of bentonite-coatedcompound fertilizers.Journal of Zhejiang University ofTechnology,2006,34(4):393-397(in Chinese)
[11]刘涉江,刘秀丽,王少博.CPC/CaO2氧缓释复合材料的制备及其释氧性能探讨.环境工程学报,2010,4(5):971-974Liu S.J.,Liu X.L.,Wang S.B.Preparation and oxy-gen release properties of an oxygen slow-releas composite(CPC/CaO2).Chinese Journal of Environmental Engi-neering,2010,4(5):971-974(in Chinese)
[12]GB/T1876-1995,磷矿石和磷精矿中二氧化碳含量的测定气量法GB/T1876-1995,Determination of CO2 in Phosphate Oesand Phosphate Concentrates.Gas Method(in Chinese)
[2]Grete Rasmussen,Gro Fremmersvik,Rolf A.Olse.Treat-ment of creosote-contaminated groundwater in a peat/sandpermeable barrier—A column study.Journal of HazardousMaterials,2002,93(3):285-306
[3]Seunghak L.,Kwanghun L.,Sungsu R.,et al.Develop-ment of a new zero-valent iron zeolite material to reducenirate without ammonium release.Environmental Engineer-ing,2007,133(1):6-12
[4]Carsten Vogt,Albin Alfreider,Helmut Lorbeer,et al.Bioremediation of chlorobenzene-contaminated groundwaterin an in situ reactor mediated by hydrogen peroxide.Con-taminant Hydrology,2004,68:121-141
[5]谢李,刘菲,刘玉龙.释氧渗透反应格栅填料的改进研究.环境科学与技术,2010,33(2):44-48Xie L,Liu F,Liu Y L.Improving Property of filler in oxy-gen-releasing permeable reactive barrier.EnvironmentalScience&Technology,2010,33(2):44-48(in Chinese)
[6]Kao C.M.,Chen S.C.,Su M.C.Laboratory column stud-ies for evaluating a barrier system for providing oxygen andsubstrate for TCE biodegradation.Chemosphere,2001,44(5):925-934
[7]Liu C.Y.,Speitel G.E.,Georgiou G.Kinetics of methylt-butyl ether cometabolism at low concentrations by purecultures of butane-degrading bacteria.Applied and Envi-ronmental Microbiology,2001,67(5):2197-2201
[8]Prince R.C.Biodegradation of methyl tertiary-butyl ether(MTBE)and other fuel oxygenates.Critical Reviews inMicrobiology,2000,26(3):163-178
[9]Kao C.M.,Chen S.C.,Wang J.Y.,et al.Remediationof PCE contaminated aquifer by an in situ two-layer biobar-rier:laboratory batch and column studies.Water Re-search,2003,37(1):27-38
[10]潘炎烽,谢丽华,周春晖,等.吸附性矿物膨润土对肥料控释作用初探.浙江工业大学学报,2006,34(4):393-397Pan Y.F.,Xie L.H.,Zhou C.H.,et al.Preliminarystudy on features of controlled release of bentonite-coatedcompound fertilizers.Journal of Zhejiang University ofTechnology,2006,34(4):393-397(in Chinese)
[11]刘涉江,刘秀丽,王少博.CPC/CaO2氧缓释复合材料的制备及其释氧性能探讨.环境工程学报,2010,4(5):971-974Liu S.J.,Liu X.L.,Wang S.B.Preparation and oxy-gen release properties of an oxygen slow-releas composite(CPC/CaO2).Chinese Journal of Environmental Engi-neering,2010,4(5):971-974(in Chinese)
[12]GB/T1876-1995,磷矿石和磷精矿中二氧化碳含量的测定气量法GB/T1876-1995,Determination of CO2 in Phosphate Oesand Phosphate Concentrates.Gas Method(in Chinese)