| 沸石滤料曝气生物滤池处理水产养殖废水的工艺特性 |
| 摘要点击 2842 全文点击 2231 投稿时间：2009-05-13 修订日期：2009-09-28 |
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| 中文关键词 曝气生物滤池 水产养殖废水 沸石滤料 工艺特性 启动 |
| 英文关键词 biological aerated filter aquaculture wastewater zeolite media process characteristics start-up |
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| 中文摘要 |
| 采用上流式沸石滤料曝气生物滤池（ZBAF）对水产养殖废水进行处理.结果表明，沸石的高效吸附作用可使系统获得快速启动，异养菌和硝化菌生物膜的成熟分别只需7d和25d；系统在水力负荷0.25m/h及气水比20∶1工艺条件下运行效能最佳，COD和NH+4-N去除率分别稳定在85%和70%左右.通过对ZBAF滤柱沿程水质、微生物等指标分析，异养菌和硝化菌主要聚居区分别在滤料层下端和上端，DO值的低谷位置可作为其聚居区分界线；生物量（磷脂-P）和生物活性（好氧速率）沿高程的分布大体一致，其最大值均出现在滤柱底部，分别为114.12 nmol/g和0.67 mg/(g·h). |
| 英文摘要 |
| In this study,an up-flow zeolite media biological aerated filter (ZBAF) was developed and employed for the treatment of aquaculture wastewater. The results showed that ZBAF could start up quickly after 7d and 25d in viewpoint of mineralization and nitrification. 0.25 m/h and 20∶1 were found to be the optimal hydraulic loading and gas/water ratio,under which around 85% of COD and 70% of NH+4-N were removed stably in the ZBAF. Through analysis of water quality and microorganism along the flow direction,the heterotrophic and nitrifying population occupied respectively in the bottom and top of the filter column,and lower DO concentration was regarded as the boundary zone for these two different groups of chemotrophic bacteria. The changing profiles of biomass (phospholipid-P) and activity (oxygen uptake rate) showed the similar mode along the height of ZBAF,and their maximum values of 114.12 nmol/g and 0.67 mg/(g·h ) were detected at the bottom of the filter. |
