MBBR工艺用于污水厂准Ⅳ类水提标改造的方案研究

芜湖市某污水厂现状规模10×104m³/d，出水执行国家一级A排放标准。进行升级改造，出水水质达地表准Ⅳ类水标准。通过方案对比研究，对现有生物反应池好氧段进行重新划分，部分划分为缺/好可调区，部分投加好氧悬浮填料，强化硝化反硝化过程，确保出水水质稳定达标，可为污水处理厂地表准Ⅳ类水提标改造提供借鉴。

Study on Application of MBBR Technology in WWTP Quasi-class IV Water Upgrading and Reconstruction

The current scale of a wastewater treatment plant (WWTP) in Wuhu City is 10×104 m3/d, whose effluent is in compliance with the first level A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). The upgrading of this WWTP are carring out to complying with the class IV surface water standard. After plans comparison, the aerobic section of biological reactor are re-divided, part of which are divided into adjustable area, and part of which are added with some aerobic suspended fillers. The nitrification and denitrification process are enhanced to ensure that the effluent quality meetting the new standard stably. This Scheme can provide a reference for the upgrading and reconstruction of a WWTP which should meet the class IV surface water standard.