济宁城南污水处理厂深度处理工程设计
摘 要：随着城市快速发展，由于南水北调东线工程的要求，需要进行升级改造，城市污水处理厂的出水标准由一级B标准升级到一级A标准。并且需要将50%的处理水进行深度处理后回用，满足城市杂用水和景观水体水质要求。污水厂通过升级改造工程以达到出水水质标准，以及对处理水深度处理后回用。
关键词：回用水、提标改造、深度处理、污水处理厂
Research on Upgrading and Reconstruction Project of WWTP
Abstract:With the development of the urban rapid, in China, due to the requirements of the East Route of South-to-North Water Transfer Project the standards of many wastewater treatment plants increased form 1B to 1A based on the 'Municipal Wastewater Treatment Plant Pollutant Emission Standards'(GB18918-2002). In addition, 50% of the treated water needs to be reused after deep treatment to meet the water quality requirements of urban miscellaneous water and landscape water.Sewage treatment plants are upgraded to meet effluent quality standards and reuse of treated water after advanced treatment.
Key words: recycling water; upgrade and renovation; advanced treatment; WWTP
正我国近年来加大了污水治理设施建设的投入,污水处理厂数量逐年增加,为改善城镇水环境发挥了重要作用。然而,在2002年颁布《城镇污水处理厂污染物排放标准》(GB 18918—2002)前,受早期环境污染形势和污水排放标准的影响,很多前期建造的污水处理厂对氮、磷的去除效率较低,无法达到GB 18918—2002要求,在此形势下,必须进行污水处理厂的升级改造,减少氮磷排放,进一步改善环境[1]。
1.国内外污水厂升级改造的背景和现状
1.1我国污水厂升级改造的背景和现状
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