不同渗滤液水位对垃圾土产气特性的影响研究
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摘要
针对填埋场垃圾含水率沿纵向差异性较大,且较多垃圾处于渗滤液液面以下,降解规律较为复杂等问题。对无锡桃花山填埋场新鲜垃圾进行分拣、破碎,分别使用渗滤液原液、渗滤液(pH=7.45)及清水(pH=7.45)进行含水率控制,通过恒温水槽控制降解温度为41℃,进行现场垃圾的室内温控降解试验。试验结果表明:相同含水率条件下,产气速率第一峰值、二次产气开始时间及累计产气量,均为原液试样>渗滤液(pH=7.45)试样>水(pH=7.45)试样,且与含渗滤液(水)率呈正相关。
Municipal solid waste(MSW) produce plenty of leachate in the process of landfill after hydrolysis and degradation,which leads to the moisture content of the MSW along the depth direction very different.Most of the MSW is below the liquid level of leachate,which makes the degradation rules complicated.The samples from Wu Xi Tao hua shan Landfill were crushed by scissors and mixed,and the water content was carried out by using leachate,leachate(pH=7.45) and water(pH=7.45).The changing external temperature was simulated by adjusting the water tank in the apparatus,and he temperature of the tank water was monitored to keep 41℃ during this degradation test.The following conclusions were drawn:Under the same moisture content,the first peak of gas generation rate,the start time of secondary gas production and LFG cumulative volume have the same rule,which is specimen with leachate>specimen with leachate(pH=7.45)>specimen with water(pH=7.45),and correlated with leachate(water) rate.
Municipal solid waste(MSW) produce plenty of leachate in the process of landfill after hydrolysis and degradation,which leads to the moisture content of the MSW along the depth direction very different.Most of the MSW is below the liquid level of leachate,which makes the degradation rules complicated.The samples from Wu Xi Tao hua shan Landfill were crushed by scissors and mixed,and the water content was carried out by using leachate,leachate(pH=7.45) and water(pH=7.45).The changing external temperature was simulated by adjusting the water tank in the apparatus,and he temperature of the tank water was monitored to keep 41℃ during this degradation test.The following conclusions were drawn:Under the same moisture content,the first peak of gas generation rate,the start time of secondary gas production and LFG cumulative volume have the same rule,which is specimen with leachate>specimen with leachate(pH=7.45)>specimen with water(pH=7.45),and correlated with leachate(water) rate.
引文
[1]FEI X,ZEKKOS D,RASKIN L.Quantification of parameters influencing methane generation due to biodegradation of municipal solid waste in landfills and laboratory experiments[J].Waste Management,2016,55:276-287.
[2]ABICHOU T,BARLAZ M A,GOLDSMITH D,et al.Leachate Quality Monitoring from Conventional,Retrofit,and Bio-Reactor Landfill Cells[J].Journal of Hazardous Toxic&Radioactive Waste,2015,19(4):04015009.
[3]孟理昕.温度对垃圾土降解的影响特性[D].南京:河海大学,2015.
[4]ZHAO Y R,LIU T J,CHEN X S,et al.The effect of temperature on the biodegradation properties of municipal solid waste.[J].Waste Management&Research the Journal of the International Solid Wastes&Public Cleansing Association Iswa,2016,34(3):e34.
[5]KASALI G B.Optimisation and control of methanogenesis in refuse fractions[J].Annalen Der Chemie Und Pharmacie,1986,2014(24):5139-5143.
[6]POMMIER S,CHENU D,QUINTARD M,et al.Alogistic model for the prediction of the influence of water on the solid waste methanization in landfills[J].Biotechnology&Bioengineering,2010,97(3):473-482.
[7]郑亮亮.垃圾土参数对产气规律的影响及轴对称生物反应器研究[D].南京:河海大学,2014
[8]罗锋,陈万志,李小鹏,等.三种垃圾填埋场单元模拟器对废物降解的对比试验[J].中国环境科学,2004,24(4):474-479.
[9]SPONZA D T,ADA O N.Impact of leachate recirculation and recirculation volume on stabilization of municipal solid wastes in simulated anaerobic bioreactors[J].Process Biochemistry,2004,39(12):2157-2165.
[10]张晓星,何品晶,邵立明,等.不同渗滤液循环方式对填埋层甲烷产生的影响[J].环境科学学报,2004,24(2):304-308.
[11]XU Hui,ZHAN Liangtong,LI He.Time-and stressdependent model for predicting moisture retention capacity of high-food-waste-content municipal solid waste:based on experimental evidence[J].Journal of Zhejiang University-SCIENCE A,2016,17(7):525-540.
[12]郭汝阳,陈云敏,李育超,等.考虑pH值和挥发性脂肪酸影响的填埋城市固废厌氧降解模型[J].中国环境科学,2015,35(1):147-156.
[2]ABICHOU T,BARLAZ M A,GOLDSMITH D,et al.Leachate Quality Monitoring from Conventional,Retrofit,and Bio-Reactor Landfill Cells[J].Journal of Hazardous Toxic&Radioactive Waste,2015,19(4):04015009.
[3]孟理昕.温度对垃圾土降解的影响特性[D].南京:河海大学,2015.
[4]ZHAO Y R,LIU T J,CHEN X S,et al.The effect of temperature on the biodegradation properties of municipal solid waste.[J].Waste Management&Research the Journal of the International Solid Wastes&Public Cleansing Association Iswa,2016,34(3):e34.
[5]KASALI G B.Optimisation and control of methanogenesis in refuse fractions[J].Annalen Der Chemie Und Pharmacie,1986,2014(24):5139-5143.
[6]POMMIER S,CHENU D,QUINTARD M,et al.Alogistic model for the prediction of the influence of water on the solid waste methanization in landfills[J].Biotechnology&Bioengineering,2010,97(3):473-482.
[7]郑亮亮.垃圾土参数对产气规律的影响及轴对称生物反应器研究[D].南京:河海大学,2014
[8]罗锋,陈万志,李小鹏,等.三种垃圾填埋场单元模拟器对废物降解的对比试验[J].中国环境科学,2004,24(4):474-479.
[9]SPONZA D T,ADA O N.Impact of leachate recirculation and recirculation volume on stabilization of municipal solid wastes in simulated anaerobic bioreactors[J].Process Biochemistry,2004,39(12):2157-2165.
[10]张晓星,何品晶,邵立明,等.不同渗滤液循环方式对填埋层甲烷产生的影响[J].环境科学学报,2004,24(2):304-308.
[11]XU Hui,ZHAN Liangtong,LI He.Time-and stressdependent model for predicting moisture retention capacity of high-food-waste-content municipal solid waste:based on experimental evidence[J].Journal of Zhejiang University-SCIENCE A,2016,17(7):525-540.
[12]郭汝阳,陈云敏,李育超,等.考虑pH值和挥发性脂肪酸影响的填埋城市固废厌氧降解模型[J].中国环境科学,2015,35(1):147-156.