贵阳市下沉式再生水厂运行阶段碳排放特征研究

卢茜; 吴永贵; 王怡然; 韩义琴

doi:10.13205/j.hjgc.202411012

贵阳市下沉式再生水厂运行阶段碳排放特征研究

doi: 10.13205/j.hjgc.202411012

卢茜^1,2,
吴永贵^1, ,,
王怡然²,
韩义琴²

1. 贵州大学资源与环境工程学院, 贵阳 550000;
2. 贵州筑信水务环境产业有限公司, 贵阳 550000

基金项目:

贵州大学科研计划专项项目"人工湖富营养化水体复合生态净化与水质长效维持关键技术集成与示范-以贵州大学阅湖为例"(贵大科合[2017]65,贵大党会[2017]23-11号,贵大专会[2017]65号)

贵州省百层次创新人才培养计划项目(黔科合平台人才[2020]6002)

详细信息

作者简介:
卢茜(1996-),女,硕士研究生,主要研究方向为生活污水处理。1663202329@qq.com

通讯作者:
吴永贵(1972-),男,教授,主要研究方向为污废水处理。ygwu72@126.com

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出版历程
- 收稿日期: 2023-09-21
- 网络出版日期: 2025-01-16

ANALYSIS OF DYNAMIC CHANGES IN CARBON EMISSIONS OF UNDERGROUND RECLAIMED WATER PLANTS IN OPERATION PHASE IN GUIYANG

LU Qian^1,2,
WU Yonggui^{1
, ,},
WANG Yiran²,
HAN Yiqin²

1. College of Resources and Environmental Engineering, Guizhou University, Guiyang 550000, China;
2. Guizhou Zhuxin Water Environment Co., Ltd., Guiyang 550000, China

摘要

摘要: 城市污水处理厂作为人类温室气体的主要来源之一,其碳排放量逐渐受到关注,以贵阳市4座下沉式再生水厂为例,核算其碳排放强度和影响因素。4座再生水厂均为倒置A²/O(厌氧段-缺氧段-好氧段)脱氮除磷处理工艺。将再生水厂运行阶段碳排放分为直接碳排放[主要包括甲烷(CH₄)和氧化亚氮(N₂O)直接排放]和间接碳排放(能耗碳排放及物耗碳排放)。根据混合的碳排放系数,核算出2022年碳排放强度为0.579~0.781 kg CO₂/m³,碳排放贡献变化顺序为能耗(62%~69%)>去除TN产N₂O(15%~23%)>物耗(12%~16%)>去除COD产CH₄(2%~3%)。影响再生水厂碳排放的因素包括处理规模、实际污水处理量、进出水水质、能源消耗类型、运行工况等,因此,管理人员应对污水处理厂实行精细化管理,根据进水水质水量调整污水处理厂大功率耗电设备的使用及药剂的投加,推动污水处理厂节水节能和碳减排协同的低碳管理。
- 下沉式再生水厂 /
- 温室气体 /
- 直接排放 /
- 间接排放 /
- 动态变化
Abstract: Urban wastewater treatment plants (WWTPs), as one of the main sources of human greenhouse gas emissions, have gradually attracted attention. In this paper, four reclaimed water plants in Guiyang were taken as the case to calculate carbon emission intensity and influencing fuctors. All the four plants adopt the inverted A²/O (anaerobic-anoxic-oxic) denitrification and phosphorus removal process. The carbon emissions during the operation stage of reclaimed water plants were divided into direct carbon emissions and indirect carbon emissions. Direct carbon emissions include methane (CH₄) emissions and nitrous oxide (N₂O) emissions, while indirect carbon emissions include energy-related carbon emissions and material-related carbon emissions. Based on the mixed carbon emission coefficient, it was calculated that the carbon emission intensity in 2022 ranges from 0.579 kg CO₂/m³ to 0.781 kg CO₂/m³, and the contribution of carbon emissions was in the order of energy consumption (62%~69%)>greenhouse gas N₂O produced by TN reduction (15%~23%)>material consumption (12%~16%)>greenhouse gas CH₄ produced by COD reduction (2%~3%). Carbon emissions factors of reclaimed water plants include treatment scale, actual sewage treatment capacity, post-treatment water quality requirements, energy consumption type, operating conditions, sludge dewatering methods, etc. Therefore, the management personnel of the sewage treatment plant should implement fine management, adjust the use of high power consumption equipment and the dosage of chemicals according to the influent quality and quantity, to promote the low-carbon management of water, energy conservation and carbon emission reduction of the reclaimed water plants.
- underground reclaimed water plant /
- greenhouse gases /
- direct emissions /
- indirect emissions /
- dynamic changes

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