污水处理技术国内外研究和应用现状
摘要：水资源是人类赖以生存的必要资源，随着人类社会的不断发展，在城市化进程中，污水排放问题逐渐显现出来，与我国环境友好型社会的创建有所矛盾。对此，合理处理市政污水，可以极大程度地提升水资源利用率，避免出现城市用水浪费现象，从而促进我国社会的可持续发展。本文介绍了UNITANK污水处理工艺、AAO污水处理工艺、超滤污水处理工艺、AB污水处理工艺、MBR污水处理工艺、生物膜-活性污泥耦合工艺几种污水处理工艺的基本原理和优缺点。根据水质特点、功能要求、运行稳定选择最适合的处理工艺，从而实现园区污水处理措施的有效进行以及成本等各方面的降低。
关键词：污水处理；脱氮除磷；生物处理
Research and application status of sewage treatment technology at home and abroad
Abstract: Water resources are essential resources for human survival. With the continuous development of human society, the problem of sewage discharge has gradually emerged in the process of urbanization, which is in contradiction with the creation of an environmentally friendly society in my country. In this regard, reasonable treatment of municipal sewage can greatly improve the utilization rate of water resources, avoid urban water waste, and promote the sustainable development of our society. This article introduces the basic principles, advantages and disadvantages of several wastewater treatment processes including UNITANK wastewater treatment process, AAO wastewater treatment process, ultrafiltration wastewater treatment process, AB wastewater treatment process, MBR wastewater treatment process, and biofilm-activated sludge coupling process. Choose the most suitable treatment process according to the water quality characteristics, functional requirements, and stable operation, so as to realize the effective implementation of the park#39;s sewage treatment measures and the reduction of costs.
Keywords: wastewater treatment; ammonia nitrogen; biological treatment
1. 前言
在社会快速发展过程中人类社会正面临着全球性水资源危机。对此，我国也将经过处理之后的“污水”作为新的水源，发展一水多用水资源利用模式。其次，市政污水的处理可以维护生态平衡，可以将污水中的有用物质进行回收，降低污水排放量，极大程度地避免了市政污水对湖泊、江河的水体污染，保护现有的水资源不被破坏，避免水体富营养化。最后，市政污水的处理有利于城市的可持续发展，推动城市向现代化、生态化方向发展，通过国家政府机构的顶层设计以及其具体在各个城市落实的全过程，可以提升社会对市政污水的认识，引导社会节约用水，规范其用水行为，从而促进我国城市长久稳定的发展[1]。
2. 国内外研究和发展现状
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