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.
作者
汪宝英
WANG Baoying(Shanghai Solid Waste Disposal Co.,Ltd.,Shanghai201815,China)
出处
《净水技术》
CAS
2020年第S02期90-95,共6页
Water Purification Technology
关键词
生活垃圾
渗滤液
TVOCs
好氧
厌氧
domestic garbage
landfill leachate
TVOCs
aerobic
anaerobic
