Effects of intermittent aeration on pollutants removal in subsurface wastewater infiltration system
Effects of intermittent aeration on pollutants removal in subsurface wastewater infiltration system
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间歇曝气对地下水渗滤系统污染物去除的影响
DOI：
10.1016/j.biortech.2015.05.023
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发表时间：
2015
影响因子：
11.4
通讯作者：
Long Yu
中科院分区：
文献类型：
--
作者：
Jing Pan;Hexin Fei;Siyu Song;Fang Yuan;Long Yu
在这项研究中，两个中试规模的地下污水渗滤系统（SWIS）与间歇曝气和无污染物去除性能进行了研究。基质氧化还原电位（ORP）结果表明，间歇曝气在基质上部形成好氧条件，在后续段形成缺氧或厌氧条件，对NH 4 +-N和TN的去除效果显著。间歇曝气提高了COD和TP的去除率。微生物种群数量和酶活性分析表明，间歇曝气不仅明显促进了细菌、真菌、放线菌、硝化细菌和反硝化细菌的生长繁殖，而且成功地提高了80和110 cm深度的硝酸还原酶（NR）和亚硝酸还原酶（NIR）。研究结果表明，间歇曝气是实现SWIS高去除性能的一种广泛的研究和应用策略。
In this study, the pollutant removal performances in two pilot-scale subsurface wastewater infiltration systems (SWISs) with and without intermittent aeration were investigated. Matrix oxidation reduction potential (ORP) results showed that intermittent aeration well developed aerobic conditions in upper matrix and anoxic or anaerobic conditions in the subsequent sections, which resulted in high NH4+-N and TN removal. Moreover, intermittent aeration increased removal rates of COD and TP. Microbial populations and enzyme activities analysis proved that intermittent aeration not only obviously boosted the growth and reproduction of bacteria, fungus, actinomyces, nitrifying bacteria and denitrifying bacteria, but also successfully increased nitrate reductase (NR) and nitrite reductase (NIR) in the depth of 80 and 110 cm. The results suggest that the intermittent aeration could be a widespread research and application strategy for achieving the high removal performance in SWISs.