MFC-FO联合工艺对垃圾渗滤液的处理性能研究

TREATMENT PERFORMANCE OF LANDFILL LEACHATE BY MFC-FO COMBINED PROCESS

以模拟垃圾渗滤液为阳极液,研究不同运行条件(开路、阴极无曝气及阴极闭路曝气)下微生物燃料电池(MFC)和正渗透膜(FO)对垃圾渗滤液的联合处理效果及产电状况,采用紫外光谱分析系统中污染物的变化情况。结果表明,阴极闭路曝气MFC-FO对模拟垃圾渗滤液的去除效果好于开路和无曝气的运行方式,TOC、COD、NH3-N和TN去除率分别达到95.45%、91.28%、71.77%和79.43%。闭路曝气MFC-FO进出水的紫外光谱表明,MFC处理后垃圾渗滤液中不饱和键被破坏,化合物稳定性变差,MFC-FO出水中基本无有机物特征峰,表明大部分污染物已被MFC-FO系统去除。

Landfill leachate treatment performance and power-generation by MFC-FO combined process were studied.Operation parameters of open circuit,no cathode aeration and closed-circuit cathode aeration were changed to optimize the process with the landfill leachate as the anode solution. Ultraviolet spectrum was used to analysis the changes of the pollutants in MFC-FO combined process. Results showed that removal efficiencies when the cathode of MFC was operated in closedcircuited and aerated mode was highest than those in open circuit and no aeration modes. TOC,COD,ammonia nitrogen and total nitrogen removal efficiencies could achieved 95. 45%,91. 28%,71. 77% and 79. 43%,respectively. Ultraviolet spectrum indicated that the unsaturated bond in landfill leachate was damaged and the stability of compound became weakness after treatment. After treatment by MFC-FO process,characteristic peak of organic matter in the effluent was not found. It also illustrated that most of the organic materials was removed by MFC-FO combined process.