不同生化工艺小城镇污水处理厂碳排放特征研究  

Carbon Emission Characteristics of Small-town Wastewater Treatment Plants with Different Biochemical Treatment Processes

作　　者：孙强强 罗凡 杜至力 李浩 陈贻龙 Sun Qiangqiang;Luo Fan;Du Zhili;Li Hao;Chen Yilong(School of Environment and Energy,South China University of Technology,Guangzhou 510006;Guangzhou Municipal Engineering Design&Research Institute Co.,Ltd.,Guangzhou 510060,China)

机构地区：[1]华南理工大学环境与能源学院,广东广州510006 [2]广州市市政工程设计研究总院有限公司,广东广州510060

出　　处：《广东化工》2023年第13期160-163,144,共5页Guangdong Chemical Industry

基　　金：中国博士后科学基金面上资助项目(2021M700939)。

摘　　要：我国众多小城镇污水处理厂已成为碳排放重要来源。在“碳达峰,碳中和”政策下,明晰其碳排放特征是实现低碳运营的重要基础。本研究结合现有污水厂碳排放核算标准,对南方某市四座处理规模相近但生化处理工艺各异的小城镇污水处理厂年度碳排放进行核算、分析。结果表明,四座污水厂碳排放量差异较大,但排放类别组成相似,主要碳排放来源均为电耗。污水厂总碳排放强度介于0.292~0.670 kg/m^(3),按处理工艺顺序为:微孔曝气A^(2)/O氧化沟<CAST<A^(2)/O<改良氧化沟+MBR。接着分析了电耗、药耗、生化段特性、水质对四座污水厂碳排放水平的影响,并针对其碳排放特征提出了碳减排建议。The numerous small-town wastewater treatment plants(S-WWTPs)in China have become a significant source of carbon emission.With the background of‘carbon peaking and carbon neutrality’policy,it is especially foundational to figure out the characteristics of carbon emissionfrom S-WWTPs for low-carbon operation.Based on the available standards,the carbon emission from 4 S-WWTPs(with similar treatment capacities but different processes)in 2021 in a south-China city were characterized and analyzed.Results show that the carbon emission amounts of the 4 S-WWTPs varied markedly while the compositions of emission kinds were similar where the major carbon sources were electricity consumption(55.6%~82.4%).The intensities of the 4 S-WWTPs ranged between 0.292 and 0.670 kg/m^(3) with the sequence of micro-porous aeration A^(2)/O oxidation ditch<CAST<A^(2)/O<modified oxidation ditch+MBR.Subsequently,the influences of power/chemical consumption,properties of biochemical process section and influent qualities on the carbon emission level of the 4 S-WWTPs were analyzed,and corresponding suggestions of carbon emission reduction were put forward.

关 键 词：小城镇污水处理厂 生化处理工艺 碳排放 排放特征 低碳运营 

分 类 号：TQ[化学工程]