生物倍增与生态浮岛技术修复黑臭水效果的对比分析

A Comparative Analysis of the Remediation Effects of Biological Multiplication and Ecological Floating Island on Black-odorous Waters

为了有效完成黑臭水修复目标任务,通过对比分析生物倍增与生态浮岛技术修复黑臭水效果,提出快速、简洁、成本低和长效治理黑臭水的技术。在水温为(24.1±1.3)℃和pH=(6.9±0.2)的试验条件下,研究生物倍增单元与生态浮岛技术对人工黑臭水中氨氮、溶解氧(DO)、氧化还原电位(ORP)、透明度(SD)等水质参数及生化需氧量(BOD)和色度修复净化规律和过程,对比分析生物倍增与生态浮岛技术修复黑臭水效果。研究结果表明:生物倍增单元比生态浮岛可更有效修复人工拟合黑臭水中的BOD、氨氮、SD、色度及ORP;对于DO,因复氧和污染物削减总量关系,生物倍增单元修复效果稍低于生态浮岛修复效果;试验时段内,浮岛出水水质呈现周期性恶化,而生物倍增单元出水水质稳定。因此,生物倍增单元可更有效地完成黑臭水水质修复任务。

To effectively remediate black-odorous waters,a rapid,simple,low-cost,and long-term technology in this regard is proposed after conducting a comparative analysis between biological multiplication and ecological floating island,two approaches to addressing the problem.Checked out are the remediation effects of the water quality parameters of ammonia nitrogen,dissolved oxygen(DO),redox potential(ORP),transparency(SD),biochemical oxygen demand(BOD)and chroma under the laboratory conditions of water temperature T=24.1±1.3℃and pH=6.9±0.2.The experiment shows that biological multiplication can remediate more effectively BOD,ammonia nitrogen,transparency,chromaticity and ORP on artificial black-odorous waters,compared with ecological floating island.As for DO,owing to the relation between reoxygenation and reduced pollutants,the former approach produces little lower remediation than the latter.During the experiment,the waters remediated in the floating island takes on cyclical worsening while the waters dealt with by biological multiplication are stable in terms of quality.Therefore,biological multiplication can do a better job in remediating black-odorous waters.