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- 2018
聚丙烯球强化表面流人工湿地处理模拟湖泊水脱氮作用
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Abstract:
摘要 目的:考察聚丙烯球强化表面流湿地处理模拟湖泊水脱氮能力.方法:采用室外对照实验的方法,构建了表面流湿地-聚丙烯球组合装置(系统A)、表面流湿地(系统B)、聚丙烯球装置(系统C)及空白对照4套平行小试装置.结果:表面流湿地-聚丙烯球组合装置对NH4+.N、TN的去除效果较好,6、12 d水力停留时间,对NH4+.N和TN的去除率分别达到80%和60%以上.比较系统A和B,水力停留时间为6 d时,聚丙烯球的引入额外提高40.23%的NH4+.N去除率、11.50%的TKN去除率、7.87%的TN去除率.聚丙烯球微生物群落中比例最高的前5种菌门在湿地污水处理降解COD、脱氮除磷中起到重要作用;它们分别是Proteobacteria, Chloroflexi, Firmicutes, Acidobacteria, Bacteroidetes.结论:聚丙烯球可强化表面流湿地脱氮能力.
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