垃圾渗滤液处理工艺中N_2O的释放规律及影响因素研究  

STUDY ON N_2O RELEASE RULE AND INFLUENCE FACTORS DURING WASTE LEACHATE TREATMENT PROCESS

作　　者：华佳 刘通[3] 柏双友[1,2] 张军 朱良盼[3] HUA Jia;LIU Tong;BAI Shuang-you;ZHANG Jun;ZHU Liang-pan(Wuxi Research Center for Environmental Science and Engineering, Wuxi 214153, China;School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;Wuxi City College of Vocational Technology, Wuxi 214153, China)

机构地区：[1]无锡环境科学与工程研究中心,江苏无锡214153 [2]南京信息工程大学环境科学与工程学院,南京210044 [3]无锡城市职业技术学院,江苏无锡214153

出　　处：《环境工程》2018年第6期52-57,共6页Environmental Engineering

基　　金：中国博士后科学基金项目(2014M561688);江苏省博士后科研资助计划资助项目(1301065C)

摘　　要：为探讨垃圾渗滤液处理过程中N_2O的释放规律,以某垃圾焚烧发电厂渗滤液处理站为对象,通过现场采样监测和实验室分析,研究了该站渗滤液处理各单元N_2O的液面释放通量、溶解态浓度、年释放总量、释放系数及其影响因素。结果发现:该站处理N_2O的最大释放源是好氧池,释放量占比为73.35%;好氧池污水中溶解氧浓度和亚硝态氮浓度是影响N_2O释放的主要因素,水温、pH值、C/N等参数对N_2O释放通量的影响并不显著;N_2O的年人均释放系数为0.162~0.186 g/(人·a),N_2O的污水流量释放系数为1.755×10^(-3)~2.028×10^(-3)g/L,前者要小于IPCC报告中关于生活污水的对应数据,后者远高于IPCC报告中相应数据。这对完善我国温室气体排放的基础数据、促进垃圾渗滤液处理的节能减排和CDM项目开发,都具有借鉴价值。In order to find the release rule of N2O during waste leachate treatment process,the discharge flux,disolved N2O concentration,annual total release amount,discharge coefficient and influence factors in a leachate treatment plant were studied by in-site monitoring and laboratory analysis. The results showed that N2O originated mainly from aerobic tank with contribution percentage of 73. 35%. The concentrations of dissolved oxygen and nitrite in aerobic tank were the main influence factors of N2O release,but temperature,pH value and C/N ratio had no significant influence on it. The average release coefficient per capita of N2O was 0. 162 ～ 0. 186 g/（ person·a）,which was lower than that in the report produced by Intergovernmental Panel on Climate Change（ IPCC）. The discharge coefficient of N2O was 1. 755 × 10^-3～ 2. 028 × 10^-3 g/L,which was higher than that in the IPCC report. This research is helpful in enriching the basic data of greenhouse gas emission,promoting energy saving,emission reduction as well as the clean development mechanism（ CDM） project exploitation.

关 键 词：N2O 释放规律 影响因素 垃圾渗滤液 

分 类 号：X703[环境科学与工程—环境工程]