固定化微生物对渗滤液DTRO出水中氨氮降解的研究
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摘要
采用固定化微生物技术处理渗滤液DTRO出水中氨氮,考察不同HRT、DO以及温度对反应体系脱氮的影响。结果表明:反应器驯化周期短,能够有效地去除反应体系中的氨氮和COD,其去除率分别为98.68%、78.19%。驯化后期,反应体系中出现轮虫、累枝虫、寡毛类动物。不同水力停留时间(HRT)、溶解氧(DO)、温度影响固定化微生物脱氮效果,通过试验得出最佳工艺条件为:HRT为5 d,ρ(DO)为4.0 mg/L,温度为25~30℃。在最佳工艺条件下,出水ρ(NH_4~+-N)为13.01~19.96 mg/L,ρ(COD)为6.78~12.07 mg/L,达GB 16889—2008《垃圾填埋场污染控制标准》。
Immobilized microorganism technology was applied to treat ammonia nitrogen from the disk tubular reverse osmosis( DTRO) treating landfill leachate. The effect of hydraulic retention time( HRT),dissolved oxygen( DO) and temperature on ammonia nitrogen removal were investigated. The results showed that the domestication time was short and the technology was very efficient for the removal of ammonia nitrogen( 98. 68%) and COD( 78. 19%). There were Rotifera,Epistylis sp. and oligochaetes in the reactor at the end of domestication. HRT,DO and temperature influenced removal efficiency of ammonia nitrogen significantly. The optimal conditions for HRT,DO and temperature were 5 d,4. 0 mg / L and 25 ~ 30 ℃ in the experiment. Under this condition,the concentrations of ammonia nitrogen and COD were 13. 01 ~ 19. 96 mg / L and 6. 78 ~12. 07 mg / L,respectively,which met the discharge limit in the Landfill Pollution Control Standard( GB 16889—2008).
Immobilized microorganism technology was applied to treat ammonia nitrogen from the disk tubular reverse osmosis( DTRO) treating landfill leachate. The effect of hydraulic retention time( HRT),dissolved oxygen( DO) and temperature on ammonia nitrogen removal were investigated. The results showed that the domestication time was short and the technology was very efficient for the removal of ammonia nitrogen( 98. 68%) and COD( 78. 19%). There were Rotifera,Epistylis sp. and oligochaetes in the reactor at the end of domestication. HRT,DO and temperature influenced removal efficiency of ammonia nitrogen significantly. The optimal conditions for HRT,DO and temperature were 5 d,4. 0 mg / L and 25 ~ 30 ℃ in the experiment. Under this condition,the concentrations of ammonia nitrogen and COD were 13. 01 ~ 19. 96 mg / L and 6. 78 ~12. 07 mg / L,respectively,which met the discharge limit in the Landfill Pollution Control Standard( GB 16889—2008).
引文
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[14]温丽丽,倪晋仁,叶正芳,等.固定化微生物法去除模拟渗滤液中氨氮的研究[J].环境工程学报,2011,5(9):2060-2065.
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[16]Guo Jingbo,Zhang Lanhe,Chen Wei.The regulation and control strategies of a sequencing batch reactor for simultaneous nitrification and denitrification at different temperatures[J].Bioresource Technology,2013,133:59-67.
[2]左俊芳,宋延冬,王晶.碟管式反渗透(DTRO)技术在垃圾渗滤液处理中的应用[J].膜科学与技术,2011,31(2):110-115.
[3]何红根.UF+DTRO膜处理垃圾渗滤液的研究[D].武汉:武汉理工大学,2007.
[4]沈源源.DTRO+卷式RO工艺处理垃圾渗滤液的优化研究[D].成都:西南交通大学,2014.
[5]张小玲,邓杨帆,冯继贵,等.基于SBBR的单级自养脱氮快速启动[J].环境工程学报,2015,9(7):3252-3257.
[6]刘少敏,储磊,朱敬林.固定化硝化细菌去除生活污水中的氨氮[J].环境工程学报,2014,8(10):4261-4266.
[7]叶建锋.废水生物脱氮处理新技术[M].北京:化学工业出版社,2006.
[8]吴亚杰.微生物固定化技术应用于模拟合成氨工业氨氮废水的处理[D].南京:南京理工大学,2014.
[9]李辉军.包埋氨氧化细菌处理合成氨工业废水研究[D].南京:南京理工大学,2014.
[10]杨长江.固定化高效微生物技术对焦化废水的处理研究[D].兰州:兰州交通大学,2013.
[11]聂春芬,王应军,马星宇,等.固定化活性污泥实现短程硝化反硝化处理畜禽废水[J].环境工程学报,2013,7(5):1807-1812.
[12]李娟,王应军,金航标,等.包埋活性污泥和反硝化污泥全程硝化反硝化脱氮[J].环境工程学报,2013,7(1):196-200.
[13]李尧,张振家,方海军.包埋固定化微生物工艺技术处理高氨氮化工废水[J].净水技术,2012,31(3):32-35.
[14]温丽丽,倪晋仁,叶正芳,等.固定化微生物法去除模拟渗滤液中氨氮的研究[J].环境工程学报,2011,5(9):2060-2065.
[15]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.
[16]Guo Jingbo,Zhang Lanhe,Chen Wei.The regulation and control strategies of a sequencing batch reactor for simultaneous nitrification and denitrification at different temperatures[J].Bioresource Technology,2013,133:59-67.