生活垃圾卫生填埋场渗滤液的控制及处理方案探讨

生活垃圾卫生填埋场中,垃圾渗滤液是一种高浓度的有机废水,它在垃圾填埋过程中,由于厌氧发酵,有机物分解,淋雨等原因,其组成复杂,水质和水量变化时间长短很大,是垃圾填埋场的主要来源,如果直接排放,处理不当将对环境造成严重的二次破坏。基于此,本文主要论述了生活垃圾卫生填埋场渗滤液控制与处理方案相关知识。

城市生活垃圾填埋场渗滤液减量控制方法综述

本文根据影响城市生活垃圾填埋场渗滤液产生的主要因素，结合青岛市小涧西固体废弃物综合处置场实际工程实例，从生活垃圾建场及现场填埋作业运行方面，综合阐述了城市生活垃圾填埋场渗滤液减量控制方法。

Leachate Control Technology Using H-Jointed Steel Pipe Sheet Piles with H-H Joints at Coastal Landfills

H-H joint of ＂H-jointed SPSP with H-H joint＂, which is made up of interlocking two H-steel sections of different sizes, is the one of SPSP＇s joint to improve the hydraulic conductivity. ＂H-H jointed SPSP with H-H joint＂ is expected to be applied to a vertical cutoff wall in coastal landfill sites. In H-jointed SPSP with H-H joint, the H-joint is completely imperviousness. H-H joint, however, is pervious at interlocked state because a gap of 8 to 11 mm is left between the interlocking flanges, therefore, a water interception treatment must be conducted to seal the gap. The water shielding treatment of H-H joint is executed by coating the gaps with a water-swelling sheet of paint before its installation. Then, hollow space is generated in H-H joint after treating by water-swelling sheet, and that space can be used effectively. This paper proposes leachate control technologies using H-H joint interior space of SPSP cutoff walls. The possibility of those technologies and hydraulic conductivity of H-jointed SPSP with H-H joints are demonstrated by conducting the hydraulic conductivity test.