垂直流人工湿地的生命周期评价  

Life cycle assessment of vetical flow constructed wetland

作　　者：吕慧瑜[1,2] 夏训峰[2] 王京刚[1] 王丽君[2] 韦超[1,2] LYU Huiyu XIA Xunfeng WANG Jinggang WANG Lijun WEI Chao(College of Chemical Engineering, Beijing University of Chemical Technology, Beijing l O0029 Laboratory of Water Environmental Systems Engineering, Chinese Research Academy of Environmental Sciences ,Beijing 100012)

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]中国环境科学研究院水环境系统工程研究室,北京100012

出　　处：《环境污染与防治》2017年第8期865-868,共4页Environmental Pollution & Control

基　　金：国家水体污染控制与治理科技重大专项(No.2015ZX07103-007)

摘　　要：以设计处理水量为70m^3/d的垂直流人工湿地为评价对象,处理1m^3污水为评价单元,分别对湿地建设阶段和运行阶段的全球变暖、酸化、富营养化、光化学臭氧合成以及粉尘、固废等5种影响类型进行生命周期评价。结果表明:全球变暖的主要贡献因子为CO_2和N_2O,两者的贡献达到了82.2%,主要是由建设阶段产生的;酸化的主要贡献因子为NO_x,占酸化总量的70.1%,主要由建设阶段产生;富营养化的主要贡献因子为总氮、氨氮和总磷,3者的贡献达到89.4%,主要是由运行阶段产生;光化学臭氧合成的主要贡献因子为CH_4,占光化学臭氧合成总潜力的77.5%,主要来源于运行阶段;固废、粉尘主要来源于建设阶段。5种影响类型的环境影响指数为富营养化>光化学臭氧合成>固废、粉尘>全球变暖>酸化。A vertical flow constructed wetland that had 70 m3/d processing capacity was applied as the evalua- tion subject, a life cycle assessment on construction stage and running stage for global warming, acidification, eutrophi- cation,photochemical ozone synthesis and dust＆ solid waste were evaluated based on 1 m3 wastewater treatment u- nit. Results show that：the main contributors to global warming were CO2 and N2O which were discharged from con- struction stage,accounting for 82.2 %;the main contributor to acidification was NOx which was discharged from con- struction stage,accounting for 70.1 % the main contributors to eutrophication were total nitrogen, ammonia nitrogen and total phosphorus which were discharged from running stage,accounting for 89.4 %;the main contributor to photo- chemical ozone synthesis was CH4 which was discharged from running stage,accounting for 77.5% dust ＆ solid waste were discharged from construction stage. The environment impact index showed that eutrophication：〉 photo- chemical ozone synthesis〉dust ＆ solid waste〉global warming〉acidification.

关 键 词：垂直流人工湿地 污水处理技术 生命周期评价 

分 类 号：X703[环境科学与工程—环境工程]