污水处理厂工艺设计
周 震
摘 要：随着城市发展的不断进行,居民日常生活的质量也在不断提高。全国各污水处理厂的排水标准也逐渐从《城镇污水处理厂污染物排放标准》(GB18918—2002)一级B标准升级到一级A标准。污水厂通过升级改造工程以达到出水水质标准、对处理水深度处理后回用，以及对周边河流进行补水。
关键词：回用水、提标改造、污水处理厂
Process design of sewage treatment plant
ZhouZhen
Abstract: with the continuous development of the city, the quality of residents#39; daily life is also improving. The drainage standards of all sewage treatment plants in China have been gradually upgraded from the first level B standard in the discharge standard of pollutants for urban sewage treatment plants (GB18918-2002) to the first level a standard. Through upgrading and reconstruction project, the sewage plant can reach the effluent quality standard, reuse the treated water after advanced treatment, and make up water for surrounding rivers. Key words: reuse water, upgrading, sewage treatment plant
随着水资源短缺形势的严峻和人们环保意识的提高,城市污水作为再生水资源在全球范围得到了重视。城市污水作为再生水资源,不仅能满足景观用水、厕所冲洗、灌溉等杂用水水质要求,而且经过更高级的处理( 如反渗透等）能满足更高的水质要求，甚至可以作为饮用水水源的补充水。对污水的回收利用成为了解决这一问题的重要手段，这一举措不仅能够使水资源得到重复的利用，同时也能使日益严重的水资源问题得到缓解恢复城市乃至流域的良好水环境，提高城市的综合经济实力。
1.污水处理厂升级背景和工艺现状及趋势
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