沸石生物滴滤器处理分散式生活污水的性能及生物膜特征

发布时间：2018-11-22 09:37

【摘要】：构建沸石生物滴滤器处理农村生活污水,研究了滴滤器的挂膜启动特征、进水水力负荷对滴滤器处理生活污水性能的影响.滴滤器采用连续进水的方式挂膜,挂膜26d后,COD和氨氮去除率分别达到85%和68%以上,且COD和氨氮相邻两次监测结果的相对偏差均低于10%,表明滴滤器挂膜成功,并基本达到了稳定的运行状态.滴滤器表现出对进水水力负荷变化较强的适应性,水力负荷为300L/(m~2·d)时,滴滤器对COD、氨氮、TN、TP的平均去除率分别达到90.8%、87.1%、67.2%、90.1%.滴滤器对有机物和氮磷的去除途径结果表明,微生物降解和转化作用对污水中COD、氨氮、TN的去除贡献率最大,填料的吸附则是TP去除的主要途径,铁屑的氧化是影响填料吸附去除TP的重要因素.生物量及生物膜的分布特征表明,滴滤器内生物膜中细菌的多样性十分丰富.
[Abstract]:A zeolite bio-trickling filter was constructed to treat rural domestic sewage. The characteristics of membrane start-up and the effect of influent hydraulic load on the performance of trickle filter for domestic sewage treatment were studied. The drip filter was suspended by continuous influent. After 26 days, the removal rates of COD and ammonia nitrogen reached 85% and 68% respectively, and the relative deviation of the two monitoring results of COD and ammonia nitrogen was lower than 10%, which indicated that the membrane was successfully suspended by the drip filter. And basically reached a stable state of operation. The trickle filter has a strong adaptability to the variation of hydraulic load of influent. When the hydraulic load is 300L/ (m ~ 2 d), the average removal rate of COD, ammonia nitrogen by drip filter is 90.8 and 87.1% and 67.2%, respectively. 90.1. The results of removal of organic matter and nitrogen and phosphorus by trickle filter showed that microbial degradation and transformation had the largest contribution to the removal of COD, ammonia nitrogen and TN, and the adsorption of fillers was the main way to remove TP. The oxidation of iron chips is an important factor affecting the adsorption and removal of TP by filler. Biomass and biofilm distribution showed that the diversity of bacteria in the biofilter was very rich.
【作者单位】：成都信息工程大学资源环境学院;
【基金】：国家自然科学基金资助项目(51508043) 四川省科技厅应用基础项目(2016JY0015) 成都市科技局科技惠民技术研发项目(2015-HM01-00149-SF) 成都信息工程大学中青年学术带头人科研人才基金(J201515)
【分类号】：X799.3

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