微纳米曝气结合生物膜技术在黑臭河涌底泥原位消减中的应用

Application of Micro-nano Aeration Combined with Biofilm Technology in In-situ Sludge Reduction of Black Odorous Riverbed

本研究以广州市某河涌为试验区域,采用微纳米曝气结合生物膜技术原位消减试验区河涌黑臭底泥。结果表明,在无截污、自然状态下,经过3个月试验,试验区河涌的黑臭底泥厚度减少44%~58%,底泥的含水量、有机物质、有机碳和污染物含量等显著减少。同时,水体透明度和溶解氧含量显著增加,氨氮含量、COD、SS、TP均显著降低。微纳米曝气结合生物膜技术可有效实现黑臭底泥的原位消减,并显著改善水质指标。

In this study,a river in Guangzhou was used as a test area,and micro-nano aeration combined with biofilm technology was used to reduce the black odor in the test area in situ.The results show that in a non-intercepted,natu ral state,after three months of testing,the thickness of the black odor in the river in the test area decreased by 44%to 58%,the water content,organic matter,organic carbon and pollutant content of the sediment decreased significantly.At the same time,water body transparency and dissolved oxygen content increased significantly,ammonia nitrogen content,COD,SS,TP all significantly decreased.Micro-nano aeration combined with biofilm technology can effec tively achieve the in-situ reduction of black odorous sediments and significantly improve water quality indicators.