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稻壳填料生物滤池脱氮工艺的试验研究

Study on the Performance of Denitrification of Rice Chaff Media in Aerated Biofilter
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摘要 以稻壳作为生物滤池填料处理模拟生活污水,对不同条件下生物滤池的脱氮效果进行了试验研究。研究结果表明,以稻壳为填料的生物滤池在滤速为2 m/h、气水比为5∶1、曝气方式为每间隔2 h曝气1 h、水温为20.5~26.5℃、进水COD负荷为0.24~0.72 kg/(m3.d)、NH3-N负荷为0.03~0.09kg/(m3.d)的条件下其COD、NH3-N的去除能力分别为60%~90%、60%~82%,有较强的同步除碳和脱氮能力,同时反应器中表现出了显著的短程硝化反硝化特征。 Study has been made on the performance of denitrification of rice chaff media in Aerated Biofilter, treating with life polluted water in different factors. The results showed that the removal rate of COD is from 60 % to 90 % and that of NH3 - N from 60 % to 82 % under the filtering velocity of 2 m/h and the air - water ratio of S: 1 and the aeration mode of 1 hour aeration every 2 hours rest, water temperature of 20.5 - 26.5 ℃, COD loading of 0.24 - 0.72 kg/( m^3 · d), NH3 - N loading of 0.03-0.09 kg/( m^3 · d), with rice chaff as media in Aerated Biofiher. The conclusion is it has good removal efflencency of both decarbonization and denitrification with rice chaff as media in aerated biofilter. Futhermore, the obvious shortcut nitrification - denitrification was found in the biofiher.
作者 魏星
出处 《辽宁化工》 CAS 2008年第1期20-23,共4页 Liaoning Chemical Industry
关键词 稻壳 滤速 气水比 曝气方式 同步硝化反硝化 Rice chaff Filtering velocity Ratio of air to water Aeration mode Shortcut nitri^cation - denitrificatio
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