派河流域生活垃圾简易处置场污染特征与治理

Pollution features and treatment of simple domestic waste disposal sites in Paihe river basin

通过调查采样和实验分析,研究派河流域生活垃圾简易处置场的污染状况,并提出合理性的治理措施。派河流域简易处置场渗滤液TP、TN、TOC、COD_(Cr)和重金属含量均超过GB16889—2008中规定的限值。简易处置场周围地表水TP、TN、TOC、CODCr的含量,除Z镇TN外,均超过GB3838—2002中Ⅳ类标准规定的限值。除Hg外,简易处置场中生活垃圾与其周围土壤、地表水重金属含量均符合GB15618—1995二级标准或GB3838—2002中Ⅳ类标准规定的限值,地表水Hg含量超标倍数最高,为29倍左右。派河流域简易填埋场生活垃圾腐化程度较高,距离卫生填埋场较远,适合采用表面覆盖防渗膜与四周帷幕灌浆的就地封场治理方式。简易堆场位于农田中,对周围农作物污染较大,腐化程度相对较低,适合采用异地卫生填埋的治理方式。

Through investigation and experimental analysis,the pollution status of the simple domestic waste disposal sites in Paihe river basin was studied,and some measures were put forward. The contents of TP,TN,TOC,CODCrand heavy metals of the leachate respectively were all more than the standard of GB16889- 2008. The contents of TP,TN,TOC and COD_（Cr）of surface water around simple disposal sites were all more than the standard of GB3838- 2002Ⅳ except for TN of Z Township. The contents of heavy metals except Hg in the domestic waste,soil and surface water around simple disposal sites met the standard of GB15618- 1995 II or GB3838- 2002 IV. The content of Hg in the surface water in which pollution was the most serious was more than about 29 times. The simple domestic waste landfill sites are suitable for local sealing mode to control pollution,on which impermeable membranes are covered and curtain grouting are used. The domestic waste of simple landfill sites,which are far away from sanitary landfill site,are high degree of corruption. The simple dumping site is suitable for the treatment of sanitary landfill in another place,because the domestic waste of simple dumping site,which is located on the farm,is at low level of corruption.