• 关键词：污水处理厂  AAO工艺  耦合模型  数值模拟  水流状态  推流  温度

• 基金项目：浙江省自然科学基金重点项目(No.Z507721);杭州市科技发展计划项目(No.20061133B23)

• 郭茂新
• 浙江工商大学环境科学与工程学院, 杭州 310012

• 孙培德
• 浙江工商大学环境科学与工程学院, 杭州 310012

• 王如意
• 浙江工商大学环境科学与工程学院, 杭州 310012

• 楼菊青
• 浙江工商大学环境科学与工程学院, 杭州 310012

• 曹荣华
• 浙江省湖州市德清县狮山污水处理厂, 湖州 313200

• 摘要：建立生物、水力及温度耦合模型模拟预测水流状态以及温度对污水处理效果的影响.利用校验完成的生物场-水力场耦合模型(FCASM3-Hydro)以及生物场-水力场-温度场耦合模型(FCASM3-Hydro-Temp)对德清县狮山污水处理厂的AAO工艺系统进行模拟,分别考察反应池Pe准数值以及温度对污水处理效果的影响.由FCASM3-Hydro模拟厌氧池和好氧池不同Pe值条件下污染物质出水结果分析可知,好氧池中水力推流作用的强弱直接决定着污染物质的出水浓度值,厌氧池的水流作用对污染物质的浓度变化影响并不十分显著.FCASM3-Hydro-Temp对进水温度影响污染物质去除效果的模拟结果表明,低温对NH₄⁺-N的处理明显不利,高温对PO₄^3--P的处理不利,若系统进水温度在10～40℃范围内波动将不会对污水处理效果造成显著的影响.

• Abstract：Wastewater treatment processes were simulated using a newly constructed biological, hydraulic and temperature coupled model (FCASM3-Hydro-Temp). Pe (Peclet number) effects for wastewater treatment of Deqing Shishan WWTP′s AAO process were studied using the validated Biological-Hydraulic coupled model (FCASM3-Hydro) based on the Fully Coupled Activated Sludge Model 3 (FCASM3). The effect of temperature was also investigated by the Biological-Hydraulic-Temp coupled model (FCASM3-Hydro-Temp) after validation. Different Pe values of the anaerobic tank and aerobic tank were first modeled. The results indicated that the pollutant concentrations of the aerobic tank outlet were directly determined by the flow pattern in the aerobic tank, while the effect of the anaerobic tank′s flow pattern was not quite obvious. The effect of influent temperature was then modeled using FCASM3-Hydro-Temp. Modeling results showed that low temperature was disadvantageous to NH₄⁺-N removal, and high temperature was disadvantageous to PO₄^3--Premoval. However, if the influent temperature of the WWTP varied between₁₀℃ to 40℃, wastewater treatment was not greatly affected.

• Key words：wastewater treatment plant  AAO process  coupled model  numerical simulation  flow pattern  plug-flow  temperature

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