化工设计通讯

河流污染是环境污染问题的主要表现之一，对居民生活带来了很大的危害，也不利于社会经济的健康发展。生物膜法、生态处理法是目前水污染治理的常用方法，但是能耗大、土地利用紧张也会随之而来；生物-生态工艺的成本投入较小、去污效果好；生物转盘效率高、管理简便，应用前景良好。采用组合表面流湿地方式去除污染物，是生态处理的典型技术，是对人工湿地技术成本低、生态治理优势的综合利用，成为水环境修复工作的重点研究方向。本研究以西北地区某市污水处理厂为对象，对“曝气生物滤池（BAF）+垂直流人工湿地+表面流人工湿地+生态塘”组合工艺的污水处理效果进行探究，为化工区生态环境的改善提供借鉴[1]。

River pollution is one of the main manifestations of environmental pollution, which brings great harm to residents' lives and is not conducive to the healthy development of social economy. Biofilm method and ecological treatment method are common methods for water pollution control, but high energy consumption and land use tension will also follow. The bio-ecological process has a small cost investment and good decontamination effect. The biological turntable has high efficiency, simple management, and good application prospects. The use of combined surface flow wetland to remove pollutants is a typical technology for ecological treatment, which is a comprehensive utilization of the low cost of constructed wetland technology and the advantages of ecological management, and has become a key research direction of water environment restoration. In this study, we took a sewage treatment plant in a city in Northwest China as the object to explore the sewage treatment effect of the combined process of "aeration biological filter(BAF) + vertical flow constructed wetland + surface flow constructed wetland + ecological pond", so as to provide reference for the improvement of the ecological environment of the chemical industry zone.