垃圾卫生填埋场渗沥液浓缩液表层滴管技术研究

Study on Surface Dropper Technology of Leachate Concentrate in Landfill

为研究生活垃圾卫生填埋场渗沥液浓缩液表层滴管技术的效果,采用现场试验的方法,对生活垃圾卫生填埋场生化+MBR+反渗透膜处理工艺产生的渗沥液的回灌量情况的变化、回灌后对库区内渗沥液水质COD、BOD、氨氮等产生的影响进行研究。结果表明,渗沥液浓缩液回灌实施期间,各月间回灌量差异明显;不同月份回灌液因降雨量不同而差异较大。但从试验来看,无论回灌液水质如何,库区产生的渗沥液水质COD、BOD和氨氮并未出现较大波动。试验证明,实施渗沥液浓缩液回灌是中小型垃圾卫生填埋场消纳渗沥液浓缩液的有效手段,填埋场可结合场区自身现状实施表层滴管技术处理渗沥液浓缩液。

In order to study the effect of surface dropper technology of leachate concentrated liquid in landfill,field test method was used to research the changes of leachate recharge amount produced by biochemical+MBR+reverse osmosis membrane treatment process in landfill and the influences on COD,BOD and ammonia nitrogen after recharge.The results showed that during the implementation of recharge of leachate concentrate,the amount of recharge varied significantly from month to month.The recharge amount in different months varied greatly due to different rainfall.From the experiment,COD,BOD and ammonia nitrogen in the leachate produced in the reservoir area did not fluctuate significantly regardless of the water quality of the recharge liquid.The experiment showed that the implementation of leachate concentrate recharge was an effective method to eliminate leachate concentrate in small and medium-sized landfill.The surface dropper technology could be put forward in landfill to treat leachate concentrate combined with the current situation of the field.