土木与环境工程学报（中英文）2024，Vol.46Issue(2)：236-245,10.DOI:10.11835/j.issn.2096-6717.2023.144
川东地区天然气开采场站废气污染物的赋存特征和健康风险评估
Occurrence and health risk assessment of exhaust pollutants from natural gas extraction stations in the eastern Sichuan region
摘要
Abstract
In light of the emissions of organized/unorganized waste gases during natural gas extraction,this study conducted an investigation of the occurrence of exhaust pollutants at 16 natural gas extraction stations in the eastern Sichuan region.Subsequently,an evaluation of the health risks posed by the detected waste gas pollutants to both operational personnel and the surrounding population was carried out.The results indicated that,in 2020,the concentrations of H2S,SO2 and NOx detected during the non-operational state of 13 individual well sites ranged from 0.001 to 0.016,0.007 to 0.023 and 0.012 to 0.047 mg/m3,respectively.These concentrations were comparable to those detected at the JZZ and TD71 wells over a continuous 3-year period from 2017 to 2019,reflecting the consistent emission levels of fixed-source waste gases in the East Sichuan gas field in recent years.Additionally,H2S,CS2 and NH3 were identified as the primary malodorous gases emitted from unorganized sources,but their concentrations remained low and met the secondary standard requirements stipulated in the Emission Standards for Odor Pollutants(GB 14554-93).Furthermore,the health risk assessment results revealed that when the operation of Gas Field Water Tank(GFWT),the Hazard Quotient(HQ)values for H2S and NO,at the GFWT and Transfer Water Tank exceeded 0.1,which potentially posing health risks to operational personnel.However,when GFWT was not in operation,the HQ values for H2S,SO2 and NOx at all well sites except TD62,and residential areas were all below 0.1,which indicating minimal health risks for both operational personnel and residents.关键词
天然气开采场站/气田水池/废气污染物/无组织排放/健康风险评价Key words
natural gas extraction sites/gas field water pond/waste gas pollutants/unorganized emissions/health risk assessment分类
资源环境引用本文复制引用
汪波,冯小波,袁增,程伟,郭劲松,吴建勇,高俊敏,杨颖..川东地区天然气开采场站废气污染物的赋存特征和健康风险评估[J].土木与环境工程学报（中英文）,2024,46(2):236-245,10.基金项目
中国石油西南油气田公司重庆气矿科技计划项目(K23-37) The Science and Technology Plan Project of Chongqing Gas Field of PetroChina Southwest Oil and Gas Field Company(No.K23-37) （K23-37）
