基于ASM1的活性污泥处理能力判定方法  

Estimation of Treatment Capacity of Activated Sludge System Based on ASM1

作　　者：张润强[1] 韩杏 唐姚辉 刘宗余 刘焕[2] 李志华[2] 

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048 [2]西安建筑科技大学环境与市政工程学院西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《中国给水排水》2017年第9期109-113,共5页China Water & Wastewater

基　　金：陕西省建设厅科技发展计划项目(2015-K63);2013年博士点基金联合资助课题(20136120110002)

摘　　要：研究尝试用呼吸图谱中现场呼吸速率与总呼吸速率比值(OUR_S/OUR_T)评价活性污泥处理能力。建立污泥碳氧化与硝化模型,以OUR为基准拟合曲线,对进水组分参数进行识别。依照城镇污水处理厂污染物排放一级A标准,计算进水中底物降解完全时间点,并将水力停留时间HRT与底物降解完全时间t_(ss)、t_(xs)、t_(nh)相比较,判断出水水质是否达标;同时,参考模型计算的OUR_S/OUR_T值,从水质特性和污泥特性两方面判定活性污泥处理能力。结果表明,当X_S/COD值>40%时,X_S的水解对活性污泥处理能力影响较大;当NH_3-N/COD值>9%时,NH_3-N降解影响较大;OUR_S/OUR_T值<38%时,处理能力较好。The ratio of the in situ respiratory rate to the total respiration rate （ OURs/OURT） was applied to estimate the treatment capacity of activated sludge system. Models of sludge carbon oxidation and nitrification processes were established to identify key components in the influent, based on the fitting of OUR data. According to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant, the time required for complete degradation of organics was calculated as tss, txs, tnh, and com- pared with HRT, to determine if the effluent had met the standard. Meanwhile, referring to the ratio of OURs/OURT in the model, the sewage treatment capacity was evaluated based on influent parameters and sludge characteristics. The results showed that ： ① when the ratio of Xs/COD was over 40%, the treat- ment capacity was governed by hydrolysis; while, if the ratio of NH3 - N/COD was greater than 9%, the capacity was determined by NH3 - N degradation; ② when the ratio of OURS/OURT was below 38% , the water quality of effluent could meet the standard, and the capacity of sewage treatment was sufficient.

关 键 词：活性污泥 ASMl 降解时间 进水组分 数据拟合 

分 类 号：X703[环境科学与工程—环境工程]