原位回灌法对垃圾渗滤液处理效果试验研究
发布时间：2018-10-19 16:54
【摘要】：随着城市化进程的加快,人们生活水平的提高,城市垃圾也在逐年增长。据统计,我国600多座城市每年将会产生垃圾1.6亿吨,并且以每年超出10%的速率增加。目前我国大部分城市采用卫生填埋来处理城市垃圾,这虽然会大大减少因垃圾敞开堆放所带来的环境问题,但垃圾填埋也同样带来了新的环境问题—产生大量垃圾渗滤液,如果处理不当,会带来严重的空气、水体以及土壤的污染,并最终对生态环境甚至人类健康造成危害,因此对垃圾渗滤液的处理显得尤为重要。论文首先通过实验研究了不同淋滤条件对填埋场生活垃圾稳定速度及有机物析出规律的影响。研究结果表明：从有机物析出规律来看,采用原液淋滤,淋滤量为5 L、淋滤频率为3次时,稳定化时间较短；从垃圾层沉降速率来看,采用原液回灌,淋滤量为10 L、淋滤频率为1次时,垃圾沉降稳定化越快。生活垃圾稳定后,通过实验研究了回灌量和回灌频率对渗滤液中污染物去除效果的影响。研究结果表明：回灌量为5 L、回灌频率为3次时,对NH3-N和TP去除效果较好。当回灌频率相同,回灌量为5L时,COD、NH3-N和TP的平均去除率分别为26.21%、8.52%和18.53%;当回灌量相同,回灌频率为3次时,COD、NH3-N和TP的平均去除率分别为15.18%、8.53%和14.19%。在此基础上,进一步研究了当回灌量为5 L、时有机物降解的反应动力学,得到COD的一级动力学方程为Ct=C0exp(-0.079t+0.4051),相关系数R2为0.9928；NH3-N的二级动力学方程为1/Ct=1/C0+2×10-5t,相关系数R2为0.9283；TP的二级动力学方程为1/Ct=1/C0+0.0065t,相关系数R2为0.9579。在上述研究的基础上,进行了垃圾渗滤液原位回灌处理的动态实验研究。考虑水力负荷、有机负荷以及C/N三个影响因素对COD和NH3-N去除效果的影响。实验结果表明：当水力负荷为33.96 mL/(L·d)时,COD和NH3-N的去除率分别为10.7%和4.77%；当有机负荷为40.53 mg/(L·d)时,COD的去除率为10.56%,当有机负荷为23.41 mg/(L·d)时,NH3-N的去除率为4.69%；当C/N为2.3时,COD和NH3-N的去除率分别为7.2%和3.8%。通过回灌法对渗滤液处理效果的试验研究,得到回灌技术的最佳工艺参数,为实际运行提供理论依据。
[Abstract]:With the acceleration of urbanization and the improvement of people's living standard, urban garbage is also increasing year by year. According to statistics, more than 600 cities in China will produce 160 million tons of garbage every year, and increase by more than 10% per year. At present, most cities in our country use sanitary landfills to dispose of municipal refuse. Although this will greatly reduce the environmental problems caused by the open storage of garbage, landfill also brings new environmental problems-a large amount of landfill leachate. If it is not treated properly, it will bring serious pollution of air, water and soil, and finally cause harm to the ecological environment and even human health. Therefore, the treatment of landfill leachate is particularly important. In this paper, the effects of different leaching conditions on the steady rate of MSW and the evolution of organic matter were studied. The results show that the stabilization time is shorter when the leaching amount is 5 L and the leaching frequency is 3 times. When the leaching amount is 10 L and the leaching frequency is 1, the faster the stabilization of garbage settlement is. The effects of recharge amount and recharge frequency on the removal efficiency of pollutants in leachate were studied by experiments after stabilization of domestic solid waste (MSW). The results showed that the removal efficiency of NH3-N and TP was better when the amount of recharge was 5 L and the frequency of recharge was 3 times. The average removal rates of COD,NH3-N and TP were 26.21% and 18.53 when the recharge frequency was the same, and the average removal rates of COD,NH3-N and TP were 15.188.53% and 14.19% respectively when the recharge rate was the same and the recharge frequency was 3 times. On this basis, the kinetics of organic matter degradation was further studied when the recharge was 5 L. The first order kinetic equation of COD was Ct=C0exp (-0.079 t 0.4051), the second order kinetic equation of correlation coefficient R2 was 1/Ct=1/C0 2 脳 10 ~ (-5) t, and the correlation coefficient R ~ (2) was 0.9283; The second-order kinetic equation of TP is 1/Ct=1/C0 0.0065 t, and the correlation coefficient R2 is 0.9579. On the basis of the above research, the dynamic experiment of landfill leachate in situ recharge treatment was carried out. The effects of hydraulic load, organic load and C / N on the removal efficiency of COD and NH3-N were considered. The results showed that the removal rates of COD and NH3-N were 10.7% and 4.77 respectively when hydraulic load was 33.96 mL/ (L d), COD removal rate was 10.56 when organic load was 40.53 mg/ (L d), and NH3-N removal rate was 4.69 when organic load was 23.41 mg/ (L d). When C / N is 2.3, the removal rates of COD and NH3-N are 7.2% and 3.8%, respectively. Through the experimental study on the treatment effect of leachate by recharge method, the optimum technological parameters of the recharge technique are obtained, which provides the theoretical basis for practical operation.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
本文编号：2281756
[Abstract]:With the acceleration of urbanization and the improvement of people's living standard, urban garbage is also increasing year by year. According to statistics, more than 600 cities in China will produce 160 million tons of garbage every year, and increase by more than 10% per year. At present, most cities in our country use sanitary landfills to dispose of municipal refuse. Although this will greatly reduce the environmental problems caused by the open storage of garbage, landfill also brings new environmental problems-a large amount of landfill leachate. If it is not treated properly, it will bring serious pollution of air, water and soil, and finally cause harm to the ecological environment and even human health. Therefore, the treatment of landfill leachate is particularly important. In this paper, the effects of different leaching conditions on the steady rate of MSW and the evolution of organic matter were studied. The results show that the stabilization time is shorter when the leaching amount is 5 L and the leaching frequency is 3 times. When the leaching amount is 10 L and the leaching frequency is 1, the faster the stabilization of garbage settlement is. The effects of recharge amount and recharge frequency on the removal efficiency of pollutants in leachate were studied by experiments after stabilization of domestic solid waste (MSW). The results showed that the removal efficiency of NH3-N and TP was better when the amount of recharge was 5 L and the frequency of recharge was 3 times. The average removal rates of COD,NH3-N and TP were 26.21% and 18.53 when the recharge frequency was the same, and the average removal rates of COD,NH3-N and TP were 15.188.53% and 14.19% respectively when the recharge rate was the same and the recharge frequency was 3 times. On this basis, the kinetics of organic matter degradation was further studied when the recharge was 5 L. The first order kinetic equation of COD was Ct=C0exp (-0.079 t 0.4051), the second order kinetic equation of correlation coefficient R2 was 1/Ct=1/C0 2 脳 10 ~ (-5) t, and the correlation coefficient R ~ (2) was 0.9283; The second-order kinetic equation of TP is 1/Ct=1/C0 0.0065 t, and the correlation coefficient R2 is 0.9579. On the basis of the above research, the dynamic experiment of landfill leachate in situ recharge treatment was carried out. The effects of hydraulic load, organic load and C / N on the removal efficiency of COD and NH3-N were considered. The results showed that the removal rates of COD and NH3-N were 10.7% and 4.77 respectively when hydraulic load was 33.96 mL/ (L d), COD removal rate was 10.56 when organic load was 40.53 mg/ (L d), and NH3-N removal rate was 4.69 when organic load was 23.41 mg/ (L d). When C / N is 2.3, the removal rates of COD and NH3-N are 7.2% and 3.8%, respectively. Through the experimental study on the treatment effect of leachate by recharge method, the optimum technological parameters of the recharge technique are obtained, which provides the theoretical basis for practical operation.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
【参考文献】
相关期刊论文 前10条
1 于清华;;化学絮凝-吸附预处理垃圾填埋场渗滤液试验研究[J];四川环境;2012年03期
2 宋玮华;尹军;曹俊华;邢志贤;赵可;;MAP沉淀法回收垃圾渗滤液中高浓度氨氮试验研究[J];吉林农业大学学报;2012年03期
3 刘倩;谢冰;胡冲;顾玉祥;安永新;;陈垃圾反应床+芦苇人工湿地处理垃圾渗滤液[J];环境工程学报;2012年04期
4 刘牡;彭永臻;宋燕杰;吴莉娜;张靖倩;;厌氧-好氧组合工艺处理垃圾渗滤液短程硝化的二次启动[J];水处理技术;2011年02期
5 廖小兵;许玫英;罗慧东;孙国萍;;厌氧氨氧化在污水处理中的研究进展[J];微生物学通报;2010年11期
6 陈国梅;;总磷测定中标准曲线与工作曲线的比较[J];福建分析测试;2010年01期
7 朱兰保;盛蒂;;我国城市生活垃圾处理现状及其对策[J];环境卫生工程;2006年03期
8 杨运平;唐金晶;方芳;郭劲松;;UV/TiO_2/Fenton光催化氧化垃圾渗滤液的研究[J];中国给水排水;2006年07期
9 王丹;赵朝成;;城市垃圾渗滤液处理技术发展现状[J];油气田环境保护;2006年01期
10 董春松;樊耀波;李刚;吴琳琳;;我国垃圾渗滤液的特点和处理技术探讨[J];中国给水排水;2005年12期
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