College of Environmental Science and Engineering, South China University of Technology, Guangzhou Higher Education Mega Center 510006, PR China.
J Hazard Mater. 2009 Dec 15;172(1):408-15. doi: 10.1016/j.jhazmat.2009.07.034. Epub 2009 Jul 15.
Advanced treatment of mature landfill leachate from a municipal landfill located in southern China (Jiangmen) was carried out in a full-scale plant using a new process. The combined process has a sequencing batch reactor (SBR) serving as the primary treatment, with polyferric sulfate (PFS) coagulation coupled with a Fenton system as secondary treatment, and a pair of upflow biological aerated filters (UBAFs) in parallel as tertiary treatment. The overall removal efficiency of chemical oxygen demand (COD) in this process was 97.3%, with an effluent COD less than 100 mg/L. Up to 99% ammonia (N-NH3) removal efficiency was achieved in the SBR, with an effluent of less than 3 mg/L, which meets the discharge standard (< or =25 mg/L) with only primary treatment. The total phosphorus (TP) and suspended solids (SS) in the final effluent were reduced to less than 1 mg/L and 10 mg/L, respectively. The experience gained in the operation and maintenance will lead to a more stable performance of this combined process. An economic analysis shows that the overall operating cost of the advanced treatment was $2.70/m(3). This new combination process was proved to be highly compatible and efficient in a small-scale landfill leachate treatment plant and is recommended for small-scale landfill leachate treatment plants.
采用一种新工艺，在中国南方（江门）的一个城市垃圾填埋场，对成熟的垃圾渗滤液进行了全面处理。该组合工艺以序批式反应器（SBR）作为一级处理，聚合硫酸铁（PFS）混凝与芬顿系统结合作为二级处理，一对上流式生物曝气滤池（UBAF）作为三级处理。该工艺对化学需氧量（COD）的总去除率达到 97.3%，出水 COD 小于 100mg/L。SBR 对氨氮（N-NH3）的去除率达到 99%，出水小于 3mg/L，只需一级处理就可达到排放标准（小于等于 25mg/L）。最终出水的总磷（TP）和悬浮固体（SS）分别减少到小于 1mg/L 和 10mg/L。在运行和维护方面获得的经验将使该组合工艺具有更稳定的性能。经济分析表明，高级处理的总运行成本为 2.70 美元/立方米。该新工艺在小型垃圾渗滤液处理厂被证明具有高度的兼容性和高效性，推荐用于小型垃圾渗滤液处理厂。
