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A2O与滤布滤池加人工湿地组合技术处理城市污水摘要：现如今有很多种深度处理的方法可以使水质在初步处理后有进一步的提升，达到Ⅳ类水甚至Ⅲ类水标准，大大提高了污水厂的出水质量以及，为使城市污水经水厂处理后的出水水质稳定达到Ⅳ类水,我们考虑采用A2O与滤布滤池加人工湿地组合技术来处理城市污水，A2O是一个成熟的稳定的运用活性污泥法来初步处理污水的技术。
滤布滤池技术具有结构紧凑、 水头损失小、占地面积少、 处理费用低等特点，能进一步深度处理污水。
人工湿地则是最后一道屏障，利用大自然本身净化了污水，同时也增添了一笔绿色。
三种技术的组合可以有效、经济、稳定地使处理城镇污水的污水处理厂出水水质达到Ⅳ类水标准。
关键词：深度处理 ；Ⅳ类水 ；A2O ；滤布滤池 ；人工湿地；Abstract: Nowadays, there are many advanced treatment methods that can further improve the water quality after the initial treatment, and reach the standard of Class IV or even Class III water, which greatly improves the quality of wastewater from sewage plants and, in order to make municipal sewage pass through the water plant. The quality of the treated effluent is stable and reaches Class IV water. We consider the use of A2O, cloth-media filtration and constructed wetland combination technology to treat urban sewage. A2O is a mature and stable technology that uses activated sludge to initially treat sewage. The cloth-media filtration technology has the characteristics of compact structure, small head loss, small floor space, and low treatment cost, which can further treat sewage in depth. The constructed wetland is the last barrier, using nature itself to purify the sewage and at the same time add a touch of greenery. The combination of the three technologies can effectively, economically, and stably make the effluent quality of the sewage treatment plant that treats urban sewage reach Class IV water standards.Keywords: advanced treatment; Ⅳ class water; A2O; cloth-media filtration; constructed wetland;1.城市污水处理现状我国水资源较为紧张，随着我国城市化、工业化进程的加速，全国废水的排放量也逐年增加，导致自然水体不断恶化，水资源污染形势仍十分严峻。
水体污染、水资源短缺已经成为我国经济社会实现可持续发展的严重制约因素。
近几年，国家对环保行业的重视程度和支持力度不断提升，污水处理行业也得到了快速发展。
近几年，我国污水年排放量持续增加，2015年污水年排放量仅466.62亿立方米，2018年突破500亿立方米，2019年增至554.65亿立方米，同比增长6.4%。
目前，官方暂未公布2020年污水年排放量，但是经济持续恢复稳定回升，工业经济实现平稳，预计2020年我国污水年排放量将增加，有望逼近600亿立方米。
