MBBR用于某CAST工艺污水处理厂提标改造的效能及碳排放分析  

Performance and carbon emission of applying CAST embedded with MBBR to retrofit a wastewater treatment plant

作　　者：张玲丽 顾敦罡[1] 陆嘉麒 张楠 李光辉 胡立江 贾洪柏 王寅义 ZHANG Lingli;GU Dungang;LU Jiaqi;ZHANG Nan;LI Guanghui;HU Lijiang;JIA Hongbai;WANG Yinyi(School of Chemistry and Chemical Engineering,Shanghai University of Engineering Science;Anji Goachieve Environment Technologies Co.,Ltd.;Zhejiang Guoqian Environment and Energy Engineering Research Institute;Anji Jingyuan Wastewater Treatment Co.,Ltd.)

机构地区：[1]上海工程技术大学化学化工学院 [2]安吉国千环境科技有限公司 [3]浙江国阡环境与节能工程研究院 [4]安吉净源污水处理有限公司

出　　处：《环境工程技术学报》2023年第2期679-686,共8页Journal of Environmental Engineering Technology

基　　金：上海市地方院校能力建设项目(21010501400)。

摘　　要：通过对比分析浙江省某污水处理厂提标改造前后的运行数据,研究移动床生物膜反应器(MBBR)工艺镶嵌循环式活性污泥工艺(CAST)对系统污染物去除效果以及电耗、药耗、物耗对碳排放量的影响。结果表明:MBBR工艺强化了系统的生物脱氮除磷效果,提高了系统的抗冲击负荷能力。改造后污水处理厂出水COD与NH_(3)-N、TN、TP浓度的全年平均值分别为13.7、0.2、4.3、0.05 mg/L,均能稳定达到浙江省地方标准DB 33/2169—2018《城镇污水处理厂主要水污染物排放标准》要求。改造后污水处理厂内部电耗分布无明显变化,吨水电耗增加19%,而全年消耗的外加碳源、混凝剂、消毒剂均不同程度下降,吨水药剂总用量减少44%。改造后污水处理厂碳排放量由1.04 kg/m^(3)降至0.79 kg/m^(3),处理过程产生的CH_(4)和物耗对污水处理厂整体碳排放的贡献较大。The effects of applying the cyclic activated sludge technology(CAST)process embedded with moving bed biofilm reactor(MBBR)on pollutant removal,electricity consumption,chemical consumption,and carbon emission were investigated by comparing and analyzing the operational data of a wastewater treatment plant(WWTP)in Zhejiang Province before and after upgrading and retrofit.The results showed that MBBR could strengthen the biological removal of nitrogen and phosphorus and improve the anti-shock loading capacity of the system.After retrofitting,the water quality of the effluent could meet the Zhejiang Provincial Standard for Discharge of Major Water Pollutants for Municipal Wastewater Treatment Plant(DB 33/2169-2018)stably,with the annual average values of COD,NH_(3)-N,TN and TP being 13.7,0.2,4.3 and 0.05 mg/L,respectively.There was no significant change as to the distribution of electricity consumption within the WWTP after retrofitting.The electricity consumption per ton water increased by 19%,while the annual consumption of external carbon source,coagulants and disinfectants decreased by varying degrees,and the total chemical consumption per ton water decreased by 44%.The carbon emission of the WWTP decreased from 1.04 kg/m^(3) to 0.79 kg/m^(3) after retrofitting,and the direct methane emission and material consumption in the treatment process contributed greatly to the overall carbon emission of the WWTP.

关 键 词：原位改造 移动床生物膜反应器(MBBR) 污染物去除效率 电耗 药耗 碳排放 

分 类 号：X703[环境科学与工程—环境工程]