Research on Improving Urban River Micro-Ecological Environment by Combining CaO2 with Microorganisms

IF 0.5 4区 医学
Zhichao Dong, Bin Li, Jinfang Hou, Yue Ma, Binbin Xu, Aimin Liu, Hao Wu
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引用次数: 0

Abstract

Improving the micro-ecological environment in urban rivers is crucial for preventing river black and odorous phenomena. This study examined the effectiveness of using CaO2 and microorganisms in treating urban rivers with black and odorous phenomena. The results indicated that this method had a high removal rate for ammonia nitrogen and COD in the overlying water, reaching 95.1% and 72.1%, respectively, and the dissolved oxygen concentration increased to 6.5 mg/L. The overall water quality met Class III water standards, and the sediment’s removal rates of AVS and organic matter were 87.4% and 33.3%, respectively, reducing the potential risk of black and odorous phenomena in the water. Amplicon sequencing analysis showed that the combination of CaO2 and microorganisms improved the micro-ecological environment of the sediment by increasing dissolved oxygen concentration, regulating redox potential, promoting oxidation of organic matter, ammonia nitrogen, and sulfides, and inhibiting microorganisms that cause black and odorous phenomena.
CaO2与微生物结合改善城市河流微生态环境的研究
改善城市河流微生态环境是防止河流黑臭现象的关键。本研究检验了使用CaO2和微生物处理城市黑臭河流的有效性。结果表明,该方法对上覆水中氨氮和COD的去除率较高,分别达到95.1%和72.1%,溶解氧浓度提高到6.5mg/L。总体水质达到三类水标准,沉积物对AVS和有机物的去除率分别为87.4%和33.3%,降低了水中黑臭现象的潜在风险。Amplicon测序分析表明,CaO2与微生物的结合通过提高溶解氧浓度、调节氧化还原电位、促进有机物、氨氮和硫化物的氧化以及抑制引起黑臭现象的微生物,改善了沉积物的微生态环境。
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来源期刊
Journal of Biobased Materials and Bioenergy
Journal of Biobased Materials and Bioenergy 工程技术-材料科学:生物材料
自引率
0.00%
发文量
60
审稿时长
6 months
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