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1.
通过综合垃圾填埋量、垃圾组分、以及气候特点等因素,采用二阶段复合产气速率模型对玉龙坑填埋场封场前后填埋气体产生量情况进行了预测。预测结果表明玉龙坑填埋场在封场后10年内仍有较大量的填埋气体产生,若不加以妥善处理将会产生安全隐患,若加以利用会产生经济效益。该模型的应用可为垃圾填埋场进行填埋气体产生量预测及收集处理系统的设计、管理提供合理的依据。  相似文献   

2.
目前在大量垃圾填埋场库容逐渐饱和的背景下,老旧生活垃圾填埋场的存量垃圾的处理问题亟待解决。国内外对老旧生活垃圾填埋场的治理主要分为异位治理和原位治理两大类,选择攀枝花市一处生活垃圾填埋场作为实例研究,从不同环境要素方面分析原位封场处理与异地转运处理的环境影响,可为其他垃圾填埋场提供参考。  相似文献   

3.
准好氧填埋技术在城市垃圾处理中的应用   总被引:4,自引:0,他引:4  
准好氧垃圾填埋技术在近年得到了国内外的广泛应用。其原理是将排气管与渗滤液收集管相通,利用自然通风,使外部空气因填埋场内微生物发酵产生的热量形成的热对流而通过排水管自然进入填埋场内。使填埋场内维持好氧状态,从而加快垃圾的分解,改善渗滤液水质,降低有害气体的发生量,极大的改善了填埋场周围的环境。  相似文献   

4.
随着生活垃圾焚烧处理能力不断提升,生活垃圾的填埋量逐步减少。近年来,较多早期投入使用的垃圾填埋场达到使用年限后即逐步实施封场管理,部分垃圾填埋场不再受纳生活垃圾后即停止使用。封场或停止使用后,填埋场的渗滤液、填埋气体仍有产生,安全管理问题仍需重视。通过对填埋场封场后的填埋气体安全管理问题进行分析,提出相应的对策,以减少或避免安全事故发生,提高封场后场区管理水平,确保管理到位,保障填埋场及场区周边人员人身及财产安全。  相似文献   

5.
以广东省某镇级非正规垃圾填埋场整治为例,介绍非正规垃圾填埋场治理技术及主要工程措施,为今后类似项目提供借鉴。  相似文献   

6.
深圳下坪填埋场渗滤液产生量预测研究   总被引:7,自引:1,他引:7  
对垃圾填埋渗滤液产生量预测模型进行了比较,选择经验-合理式模型作为填埋场渗滤液产生量的预测模型。综合下坪垃圾填埋场不同汇水面积、降雨量和渗滤液量的现场实测数据,采用线性回归确定了模型参数,通过模型预测渗滤液产生量与现场实测渗滤液产生量的对比分析了本模型的精度和可靠性,从而为填埋场渗滤液产生量的预测及收集处理系统的设计、管理提供科学依据。  相似文献   

7.
李启彬  刘丹 《四川环境》2006,25(5):81-84,106
本文对填埋场渗滤液产生和运移的水力学特性的研究成果进行了总结,建立在填埋垃圾均质各向同性假设基础上的渗滤液运移模型不能满足日后生物反应器填埋场渗滤液回灌系统的设计和操作运行需要,基于填埋垃圾非均质各向异性的填埋场水力学特性将是今后研究的重点。  相似文献   

8.
垃圾填埋场渗滤液回灌技术研究   总被引:2,自引:0,他引:2  
垃圾填埋场会产生大量的垃圾渗滤波,垃圾渗滤液回灌可以利用填埋场内微生物加速分解其中的有机物,同时可以利用回灌控制填埋场的含水量,促进填埋场的稳定.本文概括了渗滤液回灌处理的理论基础、工艺流程,分析了回灌技术的影响因素,并对表面回灌和地下回灌方式进行了比较,指出了推广应用垃圾渗滤液回灌处理技术需要解决的几点问题.  相似文献   

9.
为研究在焚烧原生垃圾的焚烧发电厂协同处置填埋场陈腐垃圾的运行效果,以协同焚烧附近垃圾填埋场陈腐垃圾的某垃圾焚烧发电项目为例,对填埋场陈腐垃圾和该垃圾焚烧发电厂入厂原生垃圾的性质进行了比较,并以该厂其中一条焚烧炉生产线为试验研究对象开展陈腐垃圾掺烧试验。研究表明:入炉前按适当的掺烧比均匀混料并且在焚烧过程中优化对助燃风的控制,这样对焚烧系统运行效果几乎没影响。将库容饱和的垃圾填埋场陈腐垃圾送入垃圾焚烧发电厂与原生垃圾协同焚烧,可作为陈腐垃圾资源化处理的有效途径。  相似文献   

10.
城市生活垃圾填埋场恶臭污染与周边限建区划分探讨   总被引:1,自引:0,他引:1  
鱼红霞  余杰 《四川环境》2010,29(2):100-103,108
随着我国城市垃圾状况和城市建设的变化,填埋场气体问题日益突出。探讨环境影响评价中如何合理确定垃圾填埋场周边建设的控制距离,科学设置垃圾填埋场的防护距离,已成为解决恶臭污染问题的有效途径之一。文章将恶臭污染影响作为限制性因素,提出垃圾填埋场周边限建区的概念,并探讨了划分思路和原则,最后文章从恶臭污染控制因子选取、恶臭污染影响计算模式及参数选取等对恶臭污染防护距离进行了讨论,在此基础上对垃圾填埋场周边限建区的划分方法进行了具体说明。文章探讨的基于垃圾填埋场恶臭污染影响的限建区划分方法,对垃圾填埋场环境影响评价及垃圾填埋场周边建设项目规划具有一定的参考意义。  相似文献   

11.
回灌型准好氧填埋场渗滤液中COD浓度的预测模型探讨   总被引:1,自引:0,他引:1  
肖旻昱  刘丹 《四川环境》2006,25(2):26-27,31
基于进行的室内模拟试验,推导了回灌型准好氧填埋场COD浓度计算模型,并通过模拟试验结果确定了模型参数。结果表明,模型的相关系数为0.91,该模型可用于该类填埋场COD浓度的预测。本研究可为回灌型准好氧填埋场的设计提供依据。  相似文献   

12.
生活垃圾的处置一直以填埋为主,垃圾填埋承载着巨大的环境压力,尤其是垃圾填埋产生的渗滤液会对地下水造成砷、汞污染。为了解北京市生活垃圾填埋场地下水砷、汞污染水平,在北京市5座生活垃圾填埋场布设采样点,采集36个地下水样品,采用氢化物发生-原子荧光法,分析了地下水砷、汞含量特征。结果表明,36个地下水样品砷浓度范围0.41~4.82μg/L,汞浓度范围0.024~0.121μg/L,北京市典型垃圾填埋场地下水样品不存在砷、汞污染问题。  相似文献   

13.
Site selection is an important and necessary issue for waste management in fast-growing regions. Because of the complexity of waste management systems, the selection of the appropriate solid waste landfill site requires consideration of multiple alternative solutions and evaluation criteria. Based on actual conditions of the study area, we considered economic factors, calculated criteria weights using the analytical hierarchy process (AHP), and built a hierarchy model for solving the solid waste landfill site-selection problem in Beijing, China. A geographic information system (GIS) was used to manipulate and present spatial data. All maps are graded from 1 (lowest suitability) to 5 (highest suitability) using spatial information technologies. The candidate sites were determined by aggregation based on the criteria weights. The candidate sites are divided by ‘best’, ‘good’ and ‘unsuitable’ landfill areas. Best landfill areas represent optimal sites; good landfill areas can be used as back-up candidate sites. Our work offers a siting methodology and provides essential support for decision-makers in the assessment of waste management problems in Beijing and other rapidly developing cities in developing countries.  相似文献   

14.
唐平  刘丹  李启彬 《四川环境》2004,23(6):58-61
基于传统填埋场的不足,本文提出了可持续发展填埋场的思想,即采取必要措施使填埋处置的垃圾尽快达到“最终贮存质量(FSQ)”标准,使得排放到环境(空气、水、土壤)中的物质不需要进一步处理便可为环境所接受。对于可持续发展填埋场的研究发展动态作了介绍,并且阐述了我国的应用潜力和发展前景。  相似文献   

15.
基于BP神经网络的垃圾堆放场稳定化程度的综合判别   总被引:2,自引:0,他引:2  
分析和判别垃圾堆放场的稳定化程度直接关系到是否需要采取加快稳定化进程,缩短垃圾堆放场的稳定化周期以及是否需要采取措施减少它们对环境的不利影响。本文根据我国垃圾堆放场的具体情况,提出稳定化程度的判别评价指标体系,并且确定稳定化程度的判别标准,运用BP神经网络建立垃圾堆放场稳定化程度的综合判别模型。以三峡库区的一个小型垃圾堆放场为例,采用本文所提出的综合评价模型确定它的稳定化程度,演示模型的运行过程,并为三峡库区的环境保护提供帮助。  相似文献   

16.
李为实 《四川环境》2021,(2):160-164
为了在达标排放的基础上降低建设规模为Ⅲ类、Ⅳ类型(中小型)垃圾填埋场处理垃圾渗滤液的人工及成本投入,提高系统稳定性,分析了泗县垃圾填埋场2018年3~12月渗滤液处理的运行状况。通过采用“预处理+两级碟管式反渗透+吹脱”的高度自动化工艺对垃圾渗滤液进行处理。结果表明:使用该系统处理后出水CODCr浓度低于26mg/L,NH3-N浓度低于15mg/L,各项出水指标均满足排放标准的要求,系统自动化程度高、稳定性好、且工程总投入834万元、运行期间处理每吨渗滤液花费为56.18元,成本较低适用性好。  相似文献   

17.
The problems encountered when seeking suitable locations for landfill sites often include public concern over the potential visual, health and environmental impacts. There have been many attempts to predict the response of residents in an area to a proposed landfill site and suggestions of ways to adequately consult and include the local population in the decision-making process. An alternative approach is described in this article where the residents living in the vicinity of a landfill site in Bangkok were asked how much they would be willing to pay for the landfill site to be closed and the waste taken out of the city. The method used, the contingent valuation method, can provide information on how much people value environmental goods and services. The use of the technique in this instance provided an estimate of the costs of the disamenity effects of the landfill site to the local residents.  相似文献   

18.
Platinum is increasingly used intentionally and non-intentionally in several applications. This has raised the concern about its future resources, emissions and losses during its life cycle. On the one hand, increasing platinum emissions might affect human health. On the other hand, the accumulated platinum in mineral waste, soil, landfill sites and construction materials as a result of the emissions, losses and the utilization of secondary materials can be seen as potential resources for platinum. This paper is aimed at (1) analyzing the long term impacts of the use of platinum intentionally and non-intentionally on its future demand and supply, release to the environment and accumulation in mineral waste, soil, landfill sites and construction materials and (2) quantifying the amount of platinum in secondary materials that would be available for platinum future supply. The analysis is carried out on a global level using a system dynamic model of platinum intentional and non-intentional flows and stocks. The analysis is based on four scenarios for the introduction of fuel cell vehicles (FCVs). The results show that platinum demand is increasing overtime in all scenarios at different rates and its identified resources are expected to deplete before the end of the century with or without the introduction of FCVs. The release of platinum to the environment and the accumulation in soil are expected to decrease when conventional ICE vehicles is replaced by FCVs. The amount of platinum accumulated in mineral waste, soil, landfill sites and construction materials by the time platinum is depleted are more than double its identified resources and would be potential resources for platinum that are available in different parts of the world. The methodology presented in this paper can be used in the assessment of other technologies and other metals.  相似文献   

19.
Gases released from landfill sites into the atmosphere have the potential to cause olfactory nuisances within the surrounding communities. Landfill sites are often located over complex topography for convenience mainly related to waste disposal and environmental masking. Dispersion of odours is strongly conditioned by local atmospheric dynamics. Assessment of odour impacts needs to take into account the variability of local atmospheric dynamics. In this study, we discuss a method to assess odour impacts around a landfill site located over complex terrain in order to provide information to be used subsequently to identify management strategies to reduce olfactory nuisances in the residential neighbourhoods. A weather-type classification is defined in order to identify meteorological conditions under which olfactory nuisances are to be expected. A non-steady state Gaussian model and a full-physics meteorological model are used to predict olfactory nuisances, for both the winter and summer scenarios that lead to the majority of complaints in neighbourhoods surrounding the landfill site. Simulating representative scenarios rather than full years make a high resolution simulation of local atmospheric dynamics in space and time possible. Results underline the key role of local atmospheric dynamics in driving the dispersion of odours. The odour concentration simulated by the full-physics meteorological model is combined with the density of the population in order to calculate an average population exposure for the two scenarios. Results of this study are expected to provide helpful information to develop technical solutions for an effective management of landfill operations, which would reduce odour impacts within the surrounding communities.  相似文献   

20.
Birds feeding on landfill sites cause problems in terms of nuisance to neighbors, flight safety, a threat to public health, and affecting the day to day site operation. A number of control measures exist to deter problem species; however, research into their effectiveness across sites and for multiple species has been limited. We use a modeling approach in order to assess the effectiveness of nine techniques — pyrotechnics, hand-held distress calls, static distress calls, blank ammunition, a combination of blank and lethal use of ammunition, the use of falcons, the use of hawks, wailers and helium-filled bird-scaring kites — at deterring three commonly recorded species — the Black-headed Gull (Larus ridibundus), the Herring Gull (Larus argentatus) and the Lesser Black-backed Gull (Larus fuscus) — from six landfill sites across the United Kingdom. The use of distress calls, falconry, and combinations of lethal and nonlethal use of ammunition were the most effective techniques for initially deterring birds from these sites. However, when habituation is considered, there is a clear difference between techniques such as falconry, which have a lethal aspect and may act to reinforce the deterrence, and the use of techniques such as distress calls, which do not. However there are problems related to legislation and public perception when lethal techniques are used.  相似文献   

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