垃圾浓缩液固化材料的防水和除臭性能研究
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摘要
通过利用3种凝胶固化材料对垃圾浓缩液进行固化稳定化处理处置,同时利用浓缩液与固化材料形成的浆状混合物喷射至垃圾堆体表面,考察其作为膜覆盖的防水、异味隔绝效果。结果表明,3种固化材料对浓缩液中COD、氨氮和盐分均具有较高的固化效率,其中固化材料C效果最为明显,3种污染物固化效率分别为87.2%、93.7%和86.6%,汞和砷两种重金属的固化效率分别为87.6%和94.6%。恶臭阻隔实验结果表明:3种固化材料对于生活垃圾和市政污泥两种臭气污染源均具有较高的臭气阻隔效果,尤其是固化材料C在密闭实验组中对于两种污染源臭气浓度的隔绝效率仍然为77.73%和71.62%。此外,此覆盖材料还具有较好的防水性能,冲刷水中污染物浓度值极低。
Solidified efficiency,water proofness and characteristics of odor obstruction were investigated by mixed up the concentrated leachate with three kinds of solidified materials and covered the landfill with their slurry mixture.The experimental results showed that three materials all have good performance to solidified COD,NH_3-N and salinity,especially for solidified material-C,of which solidified efficiency were 87.2%,93.7% and 86.6%,respectively.Otherwise,solidified efficiency were 87.6% and 94.6% for mercury and arsenic.Odor obstruction experiments demonstrated that three solidified material is effective to control odor diffusion after covering them to the surface of waste landfill and municipal sludge.Solidified material-C still ranks highest obstruct efficiency for odor concentration and hydrogen sulfide in enclosed test,which was 77.73% and 71.62%,respectively.In addition,this solidified material also had good performance in water proofness,of which washing water have extremely low values for contaminant concentration.
Solidified efficiency,water proofness and characteristics of odor obstruction were investigated by mixed up the concentrated leachate with three kinds of solidified materials and covered the landfill with their slurry mixture.The experimental results showed that three materials all have good performance to solidified COD,NH_3-N and salinity,especially for solidified material-C,of which solidified efficiency were 87.2%,93.7% and 86.6%,respectively.Otherwise,solidified efficiency were 87.6% and 94.6% for mercury and arsenic.Odor obstruction experiments demonstrated that three solidified material is effective to control odor diffusion after covering them to the surface of waste landfill and municipal sludge.Solidified material-C still ranks highest obstruct efficiency for odor concentration and hydrogen sulfide in enclosed test,which was 77.73% and 71.62%,respectively.In addition,this solidified material also had good performance in water proofness,of which washing water have extremely low values for contaminant concentration.
引文
[1]张皓贞,张超杰,张莹,等.垃圾渗滤液膜过滤浓缩液处理的研究进展[J].工业水处理,2015,35(11):9-13.
[2]潘松青,叶志隆,程蒙召,等.垃圾填埋场渗滤液和浓缩液的蒸发特性[J].环境工程学报,2017,11(8):4506-4512.
[3]祝雷.膜法处理垃圾渗滤液新技术实验研究[J].环境保护科学,2013,39(3):38-41.
[4]戎静.生活垃圾焚烧厂渗沥液浓缩液处理工艺综述[J].环境卫生工程,2017,25(2):56-58.
[5]ZHANG Q Q,TIAN B H,ZHANG X,et al.Investigation on characteristics of leachate and concentrated leachate in three landfill leachate treatment plants[J].Waste Management,2013,33(11):2277-2286.
[6]XU Y D,YUE D B,ZHU Y,et al.Fractionation of dissolved organic matter in mature landfill leachate and its recycling by ultrafiltration and evaporation combined processes[J].Chemosphere,2006,64(6):903-911.
[7]钱觉时,段策,韦迎春,等.垃圾卫生填埋场覆盖材料的研究与应用[J].环境工程,2008,26(4):24-27.
[8]刘滨.浅谈运用无土喷涂覆盖技术无害化处理生活垃圾[J].资源节约与环保,2014(4):51-63.
[9]查甫生,郝爱玲,许龙,等.水泥固化重金属污染土的淋滤特性试验研究[J].工业建筑,2014,44(1):65-70.
[10]杨远强,王翔,郭丽莉,等.高浓度含砷污泥的药剂稳定化和水泥固化研究[J].环境科学与管理,2013,38(5):94-99.
[11]张杰,李杭芬,赵由才,等.垃圾填埋场苍蝇和恶臭污染控制技术研究进展[J].环境污染与防治,2016,38(1):69-75.
[12]国家环境保护部,国家质量监督检验总局.生活垃圾填埋场污染物排放标准(GB16889-2008)[S].北京:中国环境科学出版社,2008.
[2]潘松青,叶志隆,程蒙召,等.垃圾填埋场渗滤液和浓缩液的蒸发特性[J].环境工程学报,2017,11(8):4506-4512.
[3]祝雷.膜法处理垃圾渗滤液新技术实验研究[J].环境保护科学,2013,39(3):38-41.
[4]戎静.生活垃圾焚烧厂渗沥液浓缩液处理工艺综述[J].环境卫生工程,2017,25(2):56-58.
[5]ZHANG Q Q,TIAN B H,ZHANG X,et al.Investigation on characteristics of leachate and concentrated leachate in three landfill leachate treatment plants[J].Waste Management,2013,33(11):2277-2286.
[6]XU Y D,YUE D B,ZHU Y,et al.Fractionation of dissolved organic matter in mature landfill leachate and its recycling by ultrafiltration and evaporation combined processes[J].Chemosphere,2006,64(6):903-911.
[7]钱觉时,段策,韦迎春,等.垃圾卫生填埋场覆盖材料的研究与应用[J].环境工程,2008,26(4):24-27.
[8]刘滨.浅谈运用无土喷涂覆盖技术无害化处理生活垃圾[J].资源节约与环保,2014(4):51-63.
[9]查甫生,郝爱玲,许龙,等.水泥固化重金属污染土的淋滤特性试验研究[J].工业建筑,2014,44(1):65-70.
[10]杨远强,王翔,郭丽莉,等.高浓度含砷污泥的药剂稳定化和水泥固化研究[J].环境科学与管理,2013,38(5):94-99.
[11]张杰,李杭芬,赵由才,等.垃圾填埋场苍蝇和恶臭污染控制技术研究进展[J].环境污染与防治,2016,38(1):69-75.
[12]国家环境保护部,国家质量监督检验总局.生活垃圾填埋场污染物排放标准(GB16889-2008)[S].北京:中国环境科学出版社,2008.