固定化微生物技术处理城市微污染河水研究 Treatment of Micro-polluted River Water by Immobilized Micr

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固定化微生物技术处理城市微污染河水研究

Treatment of Micro-polluted River Water by Immobilized Microorganism Technique

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摘要:将陶粒、功能化聚氨酯泡沫(FPUFS)、阿科蔓柔性填料、人工水草等4种不同载体与高效复合菌剂BP35应用于曝气生物滤池(BAF)构成固定化曝气生物滤池(G-BAF),研究固定化微生物技术对城市微污染河水的净化效果.4种G-BAF对NH_4~+-N、叶绿素和浊度的去除率分别为83.0%~89.0%、77.5%~89.0%和84.4%~95.2%,均大于对COD、UV_(254)和TP的去除效果.FPUFS含有羟基、环氧基和酰胺基等反应性基团,对酶和微生物的负载量大,因此FPUFS-G-BAF对污染物的去除效率高于其余3种G-BAF.水力停留时间(HRT)对4种G-BAF去除:NH_4~+-N的影响均不显著,而对COD的去除效果影响较大.当溶解氧(DO)浓度由<2 mg/L升至>4 mg/L时,4种G-BAF对COD和NH_4~+-N的去除率分别提高了11.9%~18.0%和12.7%~16.1%.GC-MS分析结果表明,G-BAF工艺能有效地将河水中分子质量较大的难降解有机物降解为小分子物质.
Abstract:The effect of immobilized microorganism technique on the micro-polluted river water was studied by four kinds of gaia-biological aerated filter (G-BAF), which were formed by special microorganism (BP35) and four different carriers, including haydite, FPUFS, aquamats flexible carrier and artificial aquatic mat. The removal rates of NH_4~+ -N, chlorophyll and turbidity were 83.0%-89.0% , 77.5%-89.0% and 84.4%-95.2% , respectively, and they were all higher than the removal rates of COD, UV_(254) and TP. The FPUFS contained reactive groups, such as hydroxyl, epoxy and acylamide groups, which made FPUFS load a great amount of enzymes and microorganisms. Therefore, the removal rates of pollutants for FPUFS-G-BAF were higher than those for the other three kinds of G-BAF. Hydraulic retention time (HRT) had little effect on the removal rate of NH_4~+ -N, while affected the removal rate of COD significantly. When the concentration of dissolved oxygen (DO) increased from < 2 mg/L to >4mg/L, for the four kinds of G-BAF, the removal rates of COD and NH_4~+-N increased 11.9%-18.0% and 12.7%-16.1%, respectively. The result of GC-MS showed that the technique of G-BAF could effectively degrade the macro-molecule refractory organics into small-molecule substance.
作 者: 瞿艳芝    刘操    廖日红    姚磊    叶正芳    王培京    QU Yan-zhi    LIU Cao    LIAO Ri-hong    YAO Lei    YE Zheng-fang    WANG Pei-jing  
作者单位:瞿艳芝,姚磊,叶正芳,QU Yan-zhi,YAO Lei,YE Zheng-fang(北京大学环境工程系,水沙科学教育部重点实验室,北京,100871)水利论文 C-np3Y+r,DPh{g
刘操,廖日红,王培京,LIU Cao,LIAO Ri-hong,WANG Pei-jing(北京市水利科学研究所,北京,100004) 
期 刊:环境科学   ISTICPKU  
Journal:CHINESE JOURNAL OF ENVIRONMENTAL SCIENCE  
年,卷(期):2009, 30(11) 
分类号:X522 
关键词: 固定化曝气生物滤池    微污染河水    载体    水力停留时间    溶解氧    生物相   
Keywords: gaia-biological aerated filter (G-BAF)    micro-polluted river water    carrier    hydraulic retention time(HRT)    dissolved oxygen    biofacies   
机标关键词:固定化微生物技术生物技术处理城市微污染河水水研究Immobilized MicroorganismRiver WaterBAFimmobilized microorganism曝气生物滤池removal rateHydraulic retention timeCOD去除效果dissolved oxygen水力停留时间去除率fourriver water有机物降解 
基金项目:国家科技支撑计划,广东省关键领域重点项目 
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