| 摘要: |
| 以点带石斑鱼(Epinephelus malabaricas)、半滑舌鳎(Cynoglossus semilaevis)养殖排放水为处理对象, 在生产现场研究了竹环填料生物滤器处理高盐度、低氨氮负荷海水养殖废水的运行效果以及挂膜阶段和稳定运行阶段微生物群落变化规律。结果表明, 点带石斑鱼养殖废水进水氨氮质量浓度为0.93～1.33 mg/L, 氨氮去除率达到27%～39%, 挂膜时间需45 d; 半滑舌鳎养殖废水进水氨氮质量浓度为0.38～0.52 mg/L, 氨氮去除率达到20%～30%, 挂膜时间需65 d。另外, 对生物滤器挂膜阶段和稳定运行阶段的氨氧化细菌数量和亚硝酸氧化细菌数量进行了统计, 氨氧化细菌的数量在点带石斑鱼和半滑舌鳎养殖排放水处理系统中分别达到104～105 CFU/mL 和103 CFU/mL, 亚硝酸氧化细菌数量则分别达到104 CFU/mL 和103 CFU/mL, 并分析了温度、进水氨氮负荷、反硝化作用对半滑舌鳎养殖废水生物滤器亚硝酸盐积累现象的影响。
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| 关键词: 竹环填料生物滤器 海水养殖废水 氨氮去除率 微生物群落 |
| DOI： |
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| 基金项目:国家863 计划资助项目(2006AA100305); 国家科技支撑计划资助项目(2006BAD09A03); 国家自然科学基金资助项目(30972267) |
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| Analysis of the performance characteristics and microbial community of bamboo ring-packed biofilters in two marine fish wastewater treatments |
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XU Yang,GAO Xi-yan,ZHANG Yan-qing,LIU Zhi-pei,LIU Ying
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| Abstract: |
| The performance characteristics and microbial community of biofilter packed with bamboo ring were investigated in Epinephelus malabaricas wastewater and Cynoglossus semilaevis wastewater with high salinity and low ammonia. It was found that the ammonia removal rate of E. malabaricas wastewater was 27%～39%, when the inlet ammonia concentrations were 0.93～1.33 mg/L, and the biofilm development needed about 45 days; while the ammonia removal rate of C.semilaevis wastewater was 20%～30%, when the inlet ammonia concentrations were 0.38～0.52 mg/L, and the biofilm development needed about 65 days. In addition, the number of AOB and NOB during the start-up and steady state of the biofilter were counted, the number of AOB in E.malabaricas wastewater bioreactor and C.semilaevis wastewater bioreactor reached to 104～105 CFU/mL and 103 MPN/mL, respectively; and the NOB number reached to 104 CFU/mL and 103 CFU/mL, respectively. The influences of temperature, inlet ammonia concentration, and denitrification on the nitrite accumulation in C.semilaevis wastewater were analyzed.
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| Key words: bamboo medium biofilter marine aquaculture wastewater ammonia removal rate microbial community |
