【摘要】 随着受纳水体富营养化日益严重,污水处理厂尾水N、P排放成为迫切需要解决的问题。针对传统活性污泥工艺的实际情况,在脱氮除磷改造中,最大限度地利用原有处理构筑物,提出增加厌氧池或缺氧池以确保生物除磷或脱氮效果。改造采用基于两段A/O的生物处理工艺,工艺论证采用IWA使用的ASMs系列模型进行模拟,模型参数使用污水处理厂多年运行数据进行率定,模拟结论可信。此方法可广泛运用于污水处理厂的改造和设计中,特别是对污水处理运行诊断和实际运行节能减排过程优化具有优势。通过合理调整运行工艺参数,改造后污水处理厂尾水可达到《城镇污水处理厂污染物排放标准》(GB18918—2002)二级标准。更多还原

【Abstract】 With the increasing aquatic eutrophication of receiving water,N and P in effluent is an urgent problem.According to the actual conditions of activated sludge processes,based on maximum using original structure,anaerobic or anoxic tanks are added to ensure biological nitrogen and phosphorus removal.Adopting IWA’s ASMs to demonstrate the upgrading process,which is based on the two stages of A/O,and the parameters are calibrated by the accumulated operating data for many years.This method can be extensive applicable to upgrading and designing WWTP,especially to wastewater treatment process diagnosising and optimizing to save energy.After upgrading,effluent water was conform to the second grade of the national standard for wastewater discharge(GB 18918—2002).更多还原