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ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｔｈｅｌａｓｔｄｅｃａｄｅｓ,Ｃｈｉｎｅｓｅｕｒｂａｎｐｏｐｕｌａ ｔｉｏｎｉｎｃｒｅａｓｅｄｒａｐｉｄｌｙａｓａｒｅｓｕｌｔｏｆｔｈｅａｃｃｅｌｅｒａｔ ｅｄｅｃｏｎｏｍｉｃｄｅｖｅｌｏｐｍｅｎｔａｎｄｕｒｂａｎｉｚａｔｉｏｎ .Ａｔｔｈｅｓａｍｅｔｉｍｅ ,ｔｈｅｅｓｔｉｍａｔｅｄｏｆｔｈｅａｍｏｕｎｔｏｆｍｕｎｉｃｉｐａｌｓｏｌｉｄｗａｓｔｅ (ＭＳＷ )ｇｅｎｅｒａｔｅｄａｎｄｃｏｌｌｅｃｔｅｄｐｅｒｐｅｒｓｏｎｐｅｒｄａｙｈａｓｂｅｅｎｇｒｏｗｉｎｇｙｅａｒｂｙｙｅａ… 相似文献
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对城市生活垃圾进程填埋处理其实就是有机组分进行不断生化降解的一个过程,如果从生化反应的动力学角度分析,在有机组分的生化降解过程中温度会产生较大的影响。而从化学反应的热力学角度分析,化学反应过程中的热效应则会对填埋体内的温度进行不断改变。所以城市生活垃圾的填埋场是一个温度和化学等多种环境因素相互作用、相互影响的动态平衡体系。 相似文献
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填埋已成为我国城市生活垃圾的一种主要处理方式。对填埋过程中产生的垃圾渗滤液进行分析评价并进行处理,已成为防止其造成二次污染的一个必要环节。基于对洛阳市盘龙冢垃圾填埋场渗滤液处理处置的必要性和紧迫性的分析,采用单项污染指数法对其水质进行分析评价,对其污染现状进行分析和讨论,并对其处理现状进行了深入调查。 相似文献
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To solve the disability of conventional model used in electrical leak location when measurement electrodes were buried under the liner, a new model of high voltage DC leak detection is developed. For single-liner landfill, the waste material layer, the geomembrane liner and the soil under the liner are simulated with infinite horizontal layers. The leak is regarded as two parts, one being negative current source at the entrance, and the other positive current source of the same size at the exit. Comparisons between the new theoretical model and conventional model show that conventional model is efficient in locating leaks in geomembane liner associating the dipole scanning above the liner but is ineffective when the measurement electrodes were buried under the liner. The new theoretical model data are in excellent agreement with experimental data not only above the liner but also under the liner. 相似文献
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张永兴 《重庆大学学报(英文版)》2003,2(2)
1. Introduction In October 2000, the Chongqing government received an exciting message. The Planning Committee of China approved the feasibility reports on Changshengqiao sanitary landfill projects supported by a loan from World Bank. This indicates that the Chinese government and local governments of different ranks have come to realize the importance of city environment and sanitation, and it also stands for the termination of simple and easy landfills. Before 2015, two modern sanitary l… 相似文献
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结合我国实际和生活垃圾填埋场产生的渗滤液对环境的影响,对一种能够有效处理渗滤液的回灌方法进行了初步研究．回灌试验考虑到渗滤液水质复杂多变,具有高COD含量、高NH3-N含量和高重金属离子的特点,主要采取厌氧回灌．研究内容主要有两个方面：一方面,对试验垃圾渗滤液进行回灌试验,研究回灌法对垃圾渗滤液中CODcr、NH3-N、NO3-N、NO2-N等各项指标的去除效果;另一方面,主要通过改变pH值和改变依据CODcr调节的水力负荷值来研究对渗滤液回灌效果的影响因素。 相似文献
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The influence of calcination temperature on TiO2 nanotubes＇ catalysis for TiO2/UV/03 was investigated. TiO2 nanotubes （TNTs） were prepared via the sol-gel method and calcined at 300--700 ℃, which were labeled as TNTs-300, TNTs-400, TNTs-500, TNTs-600 and TNTs-700, respectively. TNTs were characterized by transmission electron microscopy （TEM） and X-ray diffraction （XRD）. It is found that TNTs calcined at 400 ℃ showed the best thermal stability. When the calcination temperature increased from 400 ℃ to 700 ℃, the special structure of tubes was destroyed and gradually converted into nanorods and/or particles. The transformation from anatase to rutile occurred at 600 ℃, and the rutile phase was enhanced when the calcination temperature was increased to over 600 ℃. The calcina- tion temperature＇s influence on TNTs＇ adsorption activity for for TiO2/UV/O3 was investigated in landfill leachate solution chemical oxygen demand （COD） and catalytic activity In landfill leachate solution, the adsorption activity of COD decreased in the reduced order of TNTs-300, TNTs-400, TNTs-500, TNTs-600 and TNTs-700. In photocatalytic ozonation, TNTs-400 showed the best catalytic activity while TNTs-700 exhibited the worst. In other three processes, the COD removal of TNTs-300/UV/O3 was higher than those of TNTs-500/UV/O3 and TNTs-600/UV/O3 in the first 20 rain, and then became close to those of the latter two in the following 40 rain. Compared with TNTs-300 and TNTs- 400, TNTs-600 had the best anti-fouling activity, while TNTs-500 and TNTs-700 had lower anti-fouling activity than the former three. In photocatalytic ozonation, the calcination temperature of 400 ℃ was appropriate when TNTs were obtained at the synthesis temperature of 105 ℃. 相似文献
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