汽提脱氨在垃圾填埋场渗滤液处理中的应用  

Application of Stripping Ammonia Removal in the Treatment of Leachate from Landfill Sites

作　　者：卓宁泽 Zhuo Ningze(Shanghai Environmental Sanitation Engineering Design Institute Co.,Ltd.,Shanghai 200232,China)

机构地区：[1]上海环境卫生工程设计院有限公司,上海200232

出　　处：《广东化工》2024年第14期113-115,104,共4页Guangdong Chemical Industry

基　　金：上海市科委科研项目(22DZ2200200,23XD1433500);上海城投集团科研项目(CTKY-CYHYD-2023-006);上海环境集团科研项目(AHJ-HJY2-0002-2023)。

摘　　要：利用汽提脱氨系统去除并回收垃圾填埋场渗滤液中的高浓度氨氮,在不加碱的工况下取得了良好且稳定的运行效果,出水可直接进入MBR生化系统进行进一步处理。工程系统15 d的运行数据显示:进水量为188 m^(3)/d~252 m^(3)/d,出水量为215 m^(3)/d~285 m^(3)/d;进水氨氮浓度为2250 mg/L~2520 mg/L,出水氨氮浓度为335 mg/L~486 mg/L;氨水产量为6.1 m^(3)/d~8.4 m^(3)/d,氨水浓度为5.68%~6.12%;氨氮去除率为76.90%~83.97%,氨氮回收率为72.96%~83.09%。汽提脱氨塔中产生的氨气可被高效回收,且产生氨水的浓度在一定范围内可自由调整。系统吨水直接运行成本为9.92元,远低于渗滤液补加复合碳源调整碳氮比的费用。The stripping ammonia removal system was utilized to remove and recover the high concentration of ammonia nitrogen in the leachate from landfill sites,achieving good and stable operation results without adding alkali.The effluent could directly enter the MBR biochemical system for further treatment.The operation data of the engineering system for 15 days showed that the influent volume was 188 m^(3)/d~252 m^(3)/d,and the effluent volume was 215 m^(3)/d~285 m^(3)/d;the influent ammonia nitrogen concentration was 2250 mg/L~2520 mg/L,and the effluent ammonia nitrogen concentration was 335 mg/L~486 mg/L;the ammonia water production was 6.1 m^(3)/d~8.4 m^(3)/d,and the ammonia water concentration was 5.68%~6.12%;the ammonia nitrogen removal rate was 76.90%~83.97%,and the ammonia nitrogen recovery rate was 72.96%~83.09%.The ammonia gas produced in the stripping ammonia removal tower could be efficiently recovered,and the concentration of the produced ammonia water could be freely adjusted within a certain range.The direct operation cost per ton of water of the system was 9.92 yuan,which was much lower than the cost of adding a composite carbon source to the leachate to adjust the carbon-nitrogen ratio.

关 键 词：垃圾填埋场渗滤液 氨氮 汽提脱氨 运行状况 运行成本 

分 类 号：TQ[化学工程]