褐铁矿与石英砂作为反硝化生物滤池填料的比较
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摘要
近年来铁氧化物在废水处理及其他环境污染控制领域中的应用得到了广泛关注。本文研究了石英砂和褐铁矿作为填料时的反硝化生物滤池的启动以及在不同水力停留时间下的反硝化脱氮性能。结果表明,褐铁矿为填料的反硝化生物滤池更容易启动并达到稳定状态。维持反硝化生物滤池的运行条件在p H 7.50±0.15和温度22±3℃,进水中的化学需氧量浓度和NO3--N浓度分别为400 mg/L和100 mg/L,当水力停留时间为4 h时,两个反应器中NO3--N的去除率均在99%以上;当HRT缩短为1 h时,以褐铁矿为填料的生物滤池中NO3--N的去除率依然保持在98%以上,而以石英砂为填料的生物滤池中NO3--N的去除率仅为83.25%,并且出水中检测到NO2--N,其最大浓度为0.9 mg/L。实验结果表明褐铁矿是一种良好的反硝化生物滤池填料。
Recently application of iron oxide in the wastewater treatment and environmental pollution control has gained comprehensive attention. In this paper, startup and operation performance of denitrifying biological filter filled with limonite and quartz was investigated. Results show that the biological filter using limonite was easier to achieve the stable stage. The influence of hydraulic retention time(HRT) on the operation performance was studied with the influent being composed of COD concentration of 400 mg/L, NO3--N concentration of 100 mg/L at p H 7.50±0.15 and 20± 3℃. When HRT was 4 h, the removal efficiency of NO3--N was higher than 99%. When HRT was 1 h, the removal efficiency of NO3--N in the filter with limonite remained above 98%. However, the filter with silicon was only 83% and nitrite was detected in the effluent with the maximum concentration of 0.9 mg/L. Results indicate that limonite is an ideal filling material for the denitrifying biological filter.
Recently application of iron oxide in the wastewater treatment and environmental pollution control has gained comprehensive attention. In this paper, startup and operation performance of denitrifying biological filter filled with limonite and quartz was investigated. Results show that the biological filter using limonite was easier to achieve the stable stage. The influence of hydraulic retention time(HRT) on the operation performance was studied with the influent being composed of COD concentration of 400 mg/L, NO3--N concentration of 100 mg/L at p H 7.50±0.15 and 20± 3℃. When HRT was 4 h, the removal efficiency of NO3--N was higher than 99%. When HRT was 1 h, the removal efficiency of NO3--N in the filter with limonite remained above 98%. However, the filter with silicon was only 83% and nitrite was detected in the effluent with the maximum concentration of 0.9 mg/L. Results indicate that limonite is an ideal filling material for the denitrifying biological filter.
引文
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[22]韩剑宏,刘燕,朱浩君,等.反硝化生物滤池的自然挂膜启动研究[J].中国给水排水,2015,31(3):1-4.
[23]王波,梅峰,李旭宁,等.反硝化生物滤池用于白酒废水深度脱氮处理研究[J].中国给水排水,2014,17:35.
[24]金鑫,王进,陈天虎,等.铁氧化物对硫酸盐还原菌分解硫酸盐矿物的协同作用[J].矿物学报,2010,(3):343-348.
[25]Wang L,Tian J,Li Y.Nitrite accumulation and nitrous oxide emission during denitrification processes with quinoline or indole as the sole carbon source[J].Journal of Chemical Technology and Biotechnology,2015,90(7):1317-1328.
[26]Kampschreur M J,Kleerebezem R,de Vet W W J M,et al.Reduced iron induced nitric oxide and nitrous oxide emission[J].Water Research,2011,45(18):5945-5952.
[2]Moreno B,Gómez M A,González-López J,et al.Inoculation of a submerged filter for biological denitrification of nitrate polluted groundwater:a comparative study[J].Journal of Hazardous Materials,2005,117(2):141-147.
[3]Jeong J,Hidaka T,Tsuno H,et al.Development of biological filter as tertiary treatment for effective nitrogen removal:Biological filter for tertiary treatment[J].Water Research,2006,40(6):1127-1136.
[4]Jokela J P Y,Kettunen R H,Sormunen K M,et al.Biological nitrogen removal from municipal landfill leachate:low-cost nitrification in biofilters and laboratory scale in-situ denitrification[J].Water Research,2002,36(16):4079-4087.
[5]Aslan S,Cakici H.Biological denitrification of drinking water in a slow sand filter[J].Journal of Hazardous Materials,2007,148(1):253-258.
[6]蒋轶锋,刘大华,孙同喜,等.沸石滤料曝气生物滤池处理水产养殖废水的工艺特性[J].环境科学,2010,31(3):703-708.
[7]魏臻,胡勇有,方平.混凝沉淀-陶粒悬浮填料移动床处理漂染废水的性能研究[J].工业用水与废水,2012,42(6):15-19.
[8]鲁安怀.矿物与微生物协同作用[J].矿物学报,2012,(S1):6-7.
[9]Lowe K L,Dichristina T J,Roychoudhury A N,et al.Microbiological and geochemical characterization of microbial Fe(Ⅲ)reduction in salt marsh sediments[J].Geomicrobiology Journal,2000,17(2):163-178.
[10]欧阳冰洁,陆现彩,刘欢,等.希瓦氏奥奈达菌MR-1还原针铁矿的实验研究及地球化学意义[J].矿物学报,2013,33(3):389-396.
[11]Tan J,Wang J,Xue J,et al.Methane production and microbial community analysis in the goethite facilitated anaerobic reactors using algal biomass[J].Fuel,2015,145:196-201.
[12]姚敦璠,陈天虎,王进,等.天然和水热合成针铁矿对有机物厌氧分解释放CH4的影响[J].环境科学,2013,34(2):635-641.
[13]Wang L,Su L,Chen H,et al.Carbon paper electrode modified by goethite nanowhiskers promotes bacterial extracellular electron transfer[J].Materials Letters,2015,141:311-314.
[14]张珍,郝志伟,刘文莉,等.零价铁对重金属和硝酸根的同步去除研究[J].环境科学,2009,30(3):775-779.
[15]刘子正,胡箭,朱先辰,等.零价铁处理不锈钢酸洗废水中的硝酸盐氮[J].工业水处理,2011,31(11):45-48.
[16]程冰如.针铁矿促进硝酸盐生物脱氮的初步研究[D].合肥:合肥工业大学大学(硕士论文),2015.
[17]国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[18]Satoh H,Ono H,Rulin B,et al.Macroscale and microscale analyses of nitrification and denitrification in biofilms attached on membrane aerated biofilm reactors[J].Water Research,2004,38(6):1633-1641.
[19]Hamlin H J,Michaels J T,Beaulaton C M,et al.Comparing denitrification rates and carbon sources in commercial scale upflow denitrification biological filters in aquaculture[J].Aquacultural Engineering,2008,38(2):79-92.
[20]徐亚同.不同碳源对生物反硝化的影响[J].环境科学,1994,15(2):29-32.
[21]孙迎雪,胡银翠,孙云祥,等.反硝化生物滤池深度脱氮机理[J].环境工程学报,2012,6(6):1857-1862.
[22]韩剑宏,刘燕,朱浩君,等.反硝化生物滤池的自然挂膜启动研究[J].中国给水排水,2015,31(3):1-4.
[23]王波,梅峰,李旭宁,等.反硝化生物滤池用于白酒废水深度脱氮处理研究[J].中国给水排水,2014,17:35.
[24]金鑫,王进,陈天虎,等.铁氧化物对硫酸盐还原菌分解硫酸盐矿物的协同作用[J].矿物学报,2010,(3):343-348.
[25]Wang L,Tian J,Li Y.Nitrite accumulation and nitrous oxide emission during denitrification processes with quinoline or indole as the sole carbon source[J].Journal of Chemical Technology and Biotechnology,2015,90(7):1317-1328.
[26]Kampschreur M J,Kleerebezem R,de Vet W W J M,et al.Reduced iron induced nitric oxide and nitrous oxide emission[J].Water Research,2011,45(18):5945-5952.