Question

翻译环境工程专业英文

1. Introduction
There are few environmental concerns regarding the waste disposal in landfills .
They can be defined as: water pollution by leachate, problems of odours, risk of explosion and combustion, risk of asphyxiation, vegetation damage and greenhouse gas emissions.

All of the problems mentioned above are local in character except the greenhouse gas
emission, which has a global effect. The generation of biogas in landfills, consisting mainly of carbon dioxide (CO2) and methane (CH4), is due to the anaerobic microbial degradation of organic waste materials, such as: food waste, garden waste, paper, textiles, resins, bitumen, etc. Usually it is referred to the biogas generated in landfills as landfill gas (LFG) since it defines the origin of the biogas. The anaerobic process begins after the waste has been in the landfill for 10–50 days. Although the majority of CH4 and CO2 is generated within 20 years of landfill completion, emissions can continue for 50 years or more.

The importance of prevention of uncontrolled emissions of LFG into the atmosphere is obvious if one takes into account that the global warming potential (GWP) of CH4 is 21 times higher than the GWP of CO2. In 1991, the atmospheric concentration of CH4 was about 1.72 ppmv, which is more than twice the pre-industrial level of about 0.8 ppmv .

There are two ways in which the problem related to the escape of LFG could be
solved. The first one, commonly used in the past, is the extraction and flare of the LFG. In this way the pressure of the LFG within the landfill is decreased which reduces the escape of LFG from the landfill. The flare of the LFG also reduces the problem of odour. The main products of flare of LFG are carbon dioxide and water, which means that the GWP of the released gas has been largely reduced. The other way is to follow a similar strategy as in the first case except that the gas is not flared but used in an economical way.

Though the flare of LFG reduces the environmental impact of the landfill site on the
environment, methane has a high calorific value and the flare of LFG represents waste of valuable resources. This influences the number of landfills where LFG is used as the supplementary or primary fuel for the production of electric power to increase. Other possible uses of LFG include: treatment of LFG for pipeline quality gas and vehicle fuel, supply of heat and carbon dioxide for greenhouses and various industrial processes where the supply of heat is required.
有哪位高手帮我翻译一下这段专业英语，请不要有工具或什么在线翻译随便处理，那种翻译看不懂，谢谢！

Answer 1

1 。导言
有几个环境的关注，关于废物在堆填区弃置。
他们可以被界定为：水污染，由垃圾渗滤液，问题的气味，爆炸的危险和燃烧，风险窒息，植被破坏和温室气体的排放。

所有上述问题都是本地的性质，除温室气体
废气排放，这是一个全球性的效果。产生的沼气在堆填区，主要包括二氧化碳（ CO2 ）和甲烷（ CH4 ） ，是由于厌氧微生物降解的有机废物的材料，如：食物渣滓，花园废物，造纸，纺织，树脂，沥青，等，通常它是指所产生的沼气作为在堆填区的堆填区沼气（ lfg ） ，因为它界定的原产地沼气。厌氧过程开始后的废物已在堆填区为10-50天。虽然大多数的CH4和CO2是产生20多年的垃圾填埋完成后，排放的废气可以继续为50年或更长时间。

预防的重要性不受控制lfg排放到大气中是显而易见的，如果一顾及认为，全球变暖潜势（ GWP ）甲烷是21倍，高于GWP值的CO2 。在1991年，大气中甲烷的浓度约为1.72 ppmv ，这是两倍以上，工业化前水平的约0.8 ppmv 。

有两种方法，其中相关的问题逃跑lfg可
解决。一是，普遍使用在过去，是提取和耀斑的lfg 。在这样的压力，该lfg内部堆填区是下跌从而降低了逃生的lfg从堆填区。该耀斑的lfg也减少了问题的气味。主要产品耀斑的lfg是二氧化碳和水，这意味着全球升温潜能的释放的气体已在很大程度上减少。另一条路是按照类似的策略，作为在第一宗案件中，除了煤气是不是发生了，但用在一个经济的方式。

虽然耀斑的lfg减少对环境的影响堆填区的网站上
环境，甲烷具有较高的热值和耀斑的lfg三个代表浪费宝贵的资源。这影响的人数堆填区的地方lfg是用来作为补充或主要燃料生产的电力增加。其他可能的用途， lfg包括：治疗lfg管道煤气的质量和汽车燃料，供应的热量和二氧化碳为温室和各工业进程的供应热是必需的。