School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China E-mail:
Central-southern Safety and Environmental Technology Institute Co., Ltd, Wuhan 430071, China.
Water Sci Technol. 2022 Feb;85(3):827-838. doi: 10.2166/wst.2022.008.
Black and odorous water bodies are an extreme phenomenon that impair ecological integrity, adversely affect the lives of residents and the town's image, and cause unpleasant sensory experiences. Herein, we consider a black and smelly river in Heshan City, Guangdong Province, as a case study. The proposed comprehensive governance process combines the use of pollution control and interception, sediment remediation, aeration oxygenation, a high-efficiency biological contact oxidation/denitrification pond, and ecosystem construction. The project operation results showed that the combined process can effectively improve water quality. The water quality of the river improved to the Class V standard. All indicators met the requirements of the 'China Surface Water Environmental Quality Standard' (GB3838-2002). River water quality indicators, monitored for four months, revealed that water transparency and dissolved oxygen increased by 5.9 times and 24.5 times, respectively. Dichromate index (CODcr), total phosphorus (TP), and ammonia nitrogen (NH-N) were reduced by 5.8, 4.17, and 5.17 times when compared to the values observed before treatment. The black-odor and eutrophication of the river were successfully eliminated, and the water quality improved significantly. In general, the combined process exhibits a high technical feasibility for implementation, providing a specific reference value for the treatment of black and odorous water bodies in urban settings.
黑臭水体是一种极端现象，会损害生态完整性，对居民的生活和城镇形象产生不利影响，并造成不愉快的感官体验。在此，我们以广东省鹤山市的一条黑臭河流为例。所提出的综合治理过程结合了污染控制和拦截、底泥修复、曝气增氧、高效生物接触氧化/反硝化池以及生态系统建设。项目运行结果表明，该组合工艺能有效改善水质。河水水质提高到了五类标准，所有指标均符合《地表水环境质量标准》（GB3838-2002）的要求。对河水水质进行了四个月的监测，结果表明水的透明度和溶解氧分别增加了 5.9 倍和 24.5 倍。与处理前相比，重铬酸盐指数（CODcr）、总磷（TP）和氨氮（NH-N）分别降低了 5.8 倍、4.17 倍和 5.17 倍。成功消除了河流的黑臭和富营养化现象，水质得到了显著改善。总的来说，该组合工艺在实施方面具有很高的技术可行性，为城市黑臭水体的处理提供了具体的参考价值。
