两段式生物法降低工业废水中高硫酸盐的试验研究
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摘要
采用厌氧+兼氧的两段式生物反应器试验装置,研究了高浓度硫酸盐工业废水处理的可行性。试验结果表明:(1)厌氧+兼氧的两段式生物反应器中废水COD的去除率约为50%,SO2-4的去除率约为80%;(2)当厌氧反应器的容积负荷为9.5kgCOD/(m3·d)、污泥负荷为2.178kgCOD/(kgVSS·d),而兼氧反应器内氧化还原电位为-350~-380mV时,可有效将厌氧反应器内SO2-4转化成固体单质硫磺;(3)整个工艺对废水中硫酸盐的去除率约为80%,为处理高浓度硫酸盐工业废水提供了一种解决方法。
This paper uses two-phase biological system including anaerobic+facultative bioreactor to analyze the project feasibility of reducing high concentration sulfate from industrial wastewater through controlling and optimization of technological parameters.The paper also studies the influence of various process parameters on the reduction of SO2-4 to sulfur.The experimental results show that in anaerobic+facultative reactor,the removal rate of sulfate is about 80%;in anaerobic reactor,the volume loading is 9.5 kgCOD/(m3·d),and sludge loading is 2.178 kgCOD/(kgVSS·d);in facultative reactor,when the oxidation-reduction potential is about-350~-380 mV,can be converted to sulfur effectively;the total sulfate removal rate of the system could reach 80%,which provides a solution to treat high concentration sulfate wastewater.
This paper uses two-phase biological system including anaerobic+facultative bioreactor to analyze the project feasibility of reducing high concentration sulfate from industrial wastewater through controlling and optimization of technological parameters.The paper also studies the influence of various process parameters on the reduction of SO2-4 to sulfur.The experimental results show that in anaerobic+facultative reactor,the removal rate of sulfate is about 80%;in anaerobic reactor,the volume loading is 9.5 kgCOD/(m3·d),and sludge loading is 2.178 kgCOD/(kgVSS·d);in facultative reactor,when the oxidation-reduction potential is about-350~-380 mV,can be converted to sulfur effectively;the total sulfate removal rate of the system could reach 80%,which provides a solution to treat high concentration sulfate wastewater.
引文
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[14]Lens P N L,Visser A,Janssen A J H,et al.Biotechnological treatment of sulfate-rich wasterwater[J].Critical Reviews in Environmental Science and Technology1998,28(1):41-88.
[15]韦朝海,王文祥,吴超飞.射流循环厌氧流化床两相厌氧处理高浓度硫酸盐有机废水[J].化工学报,2007,58(1):205-211.
[16]Moestedt J,Paledal S N,Schnurer A,et al.The effect of substrate and operational parameters on the abundance of sulphatereducing bacteria in industrial anaerobic biogas digesters[J].Bioresource Technology,2013,132:327-332.
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[2]Dou W X,Zhou Z,Ye J J,et al.Reusing effluent of flue gas desulfurization wasterwater treatment process as an economical calcium source for phosphorus removal[J].Water Science&Technology,2017,76(6):1429-1435.
[3]杨永红,秦坤.硫酸盐的环境危害及含硫酸盐废水处理技术[J].当代化工,2015,44(8):2018-2020.
[4]李洁,罗朝晖,顾栩,等.贵阳地区城镇化对浅层地下水的影响分析[J].安全与环境工程,2017,24(1):1-9.
[5]杨波涌,董志成,鲍征宇,等.湖北省应城市盐化工业区生态地球化学研究[J].安全与环境工程,2011,18(3):36-46.
[6]van den Brand T P H,Roest K,Chen G H,et al.Potential for beneficial application of sulfate reducing bacteria in sulfate containing domestic wastewater treatment[J].World Journal of Microbiology and Biotechnology,2015,31(1):1675-1681.
[7]Camiloti P R,Oliveira G J D,Zaiat M.Sulfur recovery from wastewater using a micro-aerobic External Silicone Membrane Reactor(ESMR)[J].Water,Air,&Soil Pollution,2016(6):227-231.
[8]吴庆庆,邱贤华,熊贞晟,等.硫酸盐还原菌处理含硫酸盐有机废水的原理及其应用[J].安全与环境工程,2015,22(1):90-96.
[9]徐明,徐绮,熊桂慧,等.工业硫酸盐废水处理技术研究现状[J].工业用水与废水,2017,48(4):7-10.
[10]贺延龄.废水的厌氧生物处理[M].北京:中国轻工业出版社,1998:428-444.
[11]康宁,伦世仪.硝酸盐还原-甲烷化两相厌氧消化过程动力学模型[J].无锡轻工大学学报,1996,15(4):283-289.
[12]冯俊丽,马鲁铭.高浓度硫酸盐废水的厌氧生物处理[J].环境保护科学,2005,31:23-26.
[13]Garcia-Solares S M,Ordaz A,Monroy-Hermosillo O,et al.High sulfate reduction efficiency in a UASB using an alternative source of sulfidogenic sludge derived from hydrothermal vent sediments[J].Applied Biochemistry and Biotechnology,2014,174(8):2919-2940.
[14]Lens P N L,Visser A,Janssen A J H,et al.Biotechnological treatment of sulfate-rich wasterwater[J].Critical Reviews in Environmental Science and Technology1998,28(1):41-88.
[15]韦朝海,王文祥,吴超飞.射流循环厌氧流化床两相厌氧处理高浓度硫酸盐有机废水[J].化工学报,2007,58(1):205-211.
[16]Moestedt J,Paledal S N,Schnurer A,et al.The effect of substrate and operational parameters on the abundance of sulphatereducing bacteria in industrial anaerobic biogas digesters[J].Bioresource Technology,2013,132:327-332.
[17]蒋永荣,胡明成.硫酸盐废水生物脱硫研究进展[J].环境科学与技术,2008,31(9):67-71.