生活垃圾渗滤液恶臭释放规律  

Release of Malodorous Gas from Landfill Leachate

作　　者：汪宝英 WANG Baoying(Shanghai Solid Waste Disposal Co.,Ltd.,Shanghai201815,China)

机构地区：[1]上海市固体废物处置有限公司,上海201815

出　　处：《净水技术》2020年第S02期90-95,共6页Water Purification Technology

摘　　要：生活垃圾渗滤液中存在的大量有机物在分解过程中会产生多种恶臭物质,如氨、硫醇、硫化氢等。通过搭建好氧反应器与厌氧反应器,同步模拟了生活垃圾降解过程,分析了渗滤液释放的恶臭产物组成和浓度变化;利用总挥发性有机化合物TVOCs和挥发性有机物VOCs进一步研究和对比了好氧与厌氧条件下降解过程的恶臭气体各族物质浓度随时间变化规律的差异。在好氧和厌氧反应条件下,渗滤液中释放的恶臭气体随时间的变化规律基本相似。其中,氨气和含硫化合物是TVOCs的主要贡献物质,其平均浓度远高于其他类,氨气浓度可高达104~105 ng/L;苯系物、卤代苯以及烃类等物质虽然存在浓度较低,但其存在时间长,受反应温度或其他条件影响较大。A variety of malodorous substances,such as ammonia,mercaptan and hydrogen sulfide,would be produced by organic matter in landfill leachate.An aerobic reactor and anaerobic reactor were set up.Degradation process of domestic garbage was simulated and variation of malodorous products in landfill leachate was analyzed.Under aerobic and anaerobic conditions,differences of malodorous gas were compared by testing TVOCs and VOCs.The experimental results indicated that,variation rules of malodorous gases with time were basically similar.Ammonia and sulfur compounds were the main contributions of TVOCs.The main contributions of ammonia was 104~105 ng/L.Benzene series,halobenzene and hydrocarbons could exist in low concentration for a long time,but they were greatly affected by reaction temperature or other conditions.

关 键 词：生活垃圾 渗滤液 TVOCs 好氧 厌氧 

分 类 号：X799.3[环境科学与工程—环境工程]