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曝气对生物促生剂修复城市黑臭河道水体的影响

Keywords: 生物促生剂,曝气,城市河道,黑臭,竹排冲

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Abstract:

在实验室条件下研究了曝气对生物促生剂修复城市黑臭河道水体效果的影响,并通过控制曝气时间及强度考察处理效果以确定曝气方式和曝气量。结果表明:在生物促生剂修复城市河道黑臭水体过程中使用曝气协同作用可大大增强生物促生剂的修复作用,加快修复速度。使用间歇曝气协同生物促生剂作用时效果与连续曝气相近,且可以降低运行成本。实验60d后,上覆水COD、NH3-N和TP去除率分别达46.8%、98.7%和73.3%,上覆水pH由7.61提高至7.92;底泥削减达5.49cm,底泥有机质削减率达10.5%。

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