oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Technology of comprehensive disposal and utilization of municipal solid waste (MSW)
Liu Xiao-feng,Liao Yin-zhang,Liu Ke-xin,
Liu Xiao-feng
,Liao Yin-zhang,Liu Ke-xin

环境科学学报(英文版) , 1999,
Abstract: The project for treating MSW of 200 tons each day was built in Yibin, Sichuan Province of China. The disposal processes are: separation and selection of usable resources; compost and fermentation of "heavy" organic waste (kitchen, garden composting rubbish); incineration of "light" waste (plastic, paper, wood and bamboo etc.) and landfill of inorganic waste. The thermal energy generated in the process can be used as 1/3 of the whole energy for drying fertilizers. In the process, there is no wastewater drainage, and air emissions can be effectively controlled by a series of measures. The sanitary and environmental indicators of disposal site meet the national standards. This project has worked well for two years. It not only disposes of and reduces the MSW,but also retrieves the resource effectively. The organic fertilizer has been applied in the ten thousand acres of fields, with productivity increase by more than 10%.
A perspective analysis on municipal solid waste(MSW) energy recovery in China *
A perspective analysis on municipal solid waste(MSW) energy recovery in China

He Pinjing,Shao Liming National Laboratory of Pollution Control,Reclamation,School of Environmental Engineering,Tongji University,Shanghai,China,
He Pinjing
,Shao Liming

环境科学学报(英文版) , 1997,
Abstract: The paper analysed the current situation of municipal solid waste(MSW) quantity and quality in China and the changing tendencies of its composition. Further more, the energy value of MSW was discussed. To the point of the technical and economic aspects, the feasibility of the energy recovery from MSW was also analysed. The conclusion is that the energy can be effectively recovered through a landfill gas utilization process and the energy produced by an incineration process. Through a suitable energy recovery process, it is possible to improve the economic viability of a MSW treatment process.
COMPOSTING OF MUNICIPAL SOLID WASTE (MSW): ANAEROBIC VS AEROBIC  [cached]
A.A.R PARVARESH,GH.A EMRANI,H POUR MOGHADAS
Journal of Research in Medical Sciences , 2000,
Abstract: Introduction. Pilot plant study of anaerobic composting of the organic fraction of municipal solid waste (MSW) in Isfahan was performed using sequential batch system. The anaerobic composting were compared with the conventional aerobic composting of MSW using windrow system in 1998-99. Methods. An experimental study was performed on samples of household refuses, anaerobic composts, aerobic composts and leachate of anaerobic composts. Inert materials, heavy metals concentration and physical characteristics of anaerobic and aerobic composts were compared. Results. There was not significant difference between physical and chemical characteristics of anaerobic and aerobic composting. The study showed that the heavy metals concentration in the anaerobic compost was less than aerobic compost and inert materials in both composts were more than standard concentration. Discussion. Sequential batch anaerobic composting (SEBAC) system is stable and has a good flexibility for organic materials with high total solids and a good way for MSWs composting. Amounts of heavy metals (e.g. Pb, Zn, Cu, Ni, Cr, Fe, Cd) in compost of the separated municipal solid wastes were low and about the standard ranges, but in the compost of unseparated MSWs were significantly higher than standard compost (P < 0.05). Therefore, separating the municipal solid waste in houses is essential for conservation of agricultural soil pollution.
Study on pyrolysis and gasification of wood in MSW
NI Ming-jiang,XIAO Gang,CHI Yong,YAN Jian-hu,MIAO Qi,ZHU Wen-li,CEN Ke-fa,
NI Ming-jiang
,XIAO Gang,CHI Yong,YAN Jian-hu,MIAO Qi,ZHU Wen-li,CEN Ke-fa

环境科学学报(英文版) , 2006,
Abstract: In order to develop municipal solid waste(MSW) pyrolysis/gasification and melting technology with low emission and high efficiency, it was planed that all the main components in MSW and some typical kinds of MSW were pyrolyzed/gasified to propose an exper
EVALUATION OF CHRONOLOGICAL ASPECTS OF COLLECTION AND TRANSPORTATION OF MUNICIPAL SOLID WASTE (MSW) SYSTEM IN URMIA  [PDF]
A. Jalilzadeh, Y. Rahimi and A. Parvaresh
Iranian Journal of Environmental Health Science & Engineering , 2005,
Abstract: Municipal solid waste (MSW) is a serious environmental hazard and social problem in Iran. Currently a high volume of solid waste is generated every day in the district towns of Iran and unfortunately solid waste management is being deteriorated due to the limited resources to handle the increasing rate of generated waste. Due to this fact that more than 60% of solid waste management cost is usually alocated for purpose collection and transportation of generated solid waste in the city. Analysis of this section and understanding of its effect on the management system could have a great role in reduction the costs and solving many of exist problems. This study illustrate the effectiveness of timing managing an MSW economy and that has been carried out as a case study in Urmia. Results of this research illustrsate that 58.3% in Neisan, 68.7% in Khavar, 61.5% in Benz, 81.3% in Compactor and 59.3% in FAUN 0f each cycle time is pickup time.. Mean of traveling speed for Van, Mini-truck, Truck, FAUN and Compactor was 35,46,41,38 and 42 kilometer per hour respectively. Total spent time for collection and transportation of solid waste were 1:21 hour with Van, 1:23 hour with Mini-truck, 1:29 hour with Truck, 17 minutes with FAUN and 57 minutes with Compactor. Result of this study illustrated Van is the most economic vehicle for solid waste collection system in Urmia city. Generally, priority to usage of solid waste collection vehicles illustrate in below: Truck < Mini-truck < Compactor < Van < FAUN
Bioconversion of Municipal Solid Waste (MSW) and Water Hyacinth (WH) into organic manure by fungal consortium  [cached]
Amanullah Ayesha Parveen
Journal of Sustainable Development , 2010, DOI: 10.5539/jsd.v3n1p91
Abstract: The present study was carried out to assess the degrading efficiency of the fungal consortium (Cellulolytic fungi - Paecilomyces variotti and Chaetomium globosum, lignolytic fungi – Pleurotus florida and Tramates versicolor and actinomycetes - Streptomyces lavendulae and Thermobifida fusca ) in converting the Municipal solid waste (MSW) and Water hyacinth (WH) mixture into an eco-friendly value added organic manure .The results revealed that the biomanure obtained by inoculation of fungal consortium into the municipal solid waste (MSW) and water hyacinth (WH) mixture was found to be efficient in enhancing the rate of decomposition with in 90 days of biodegradation as they showed drastic reduction in the biochemical parameters like organic carbon (21.09 per cent), cellulose (20.56 per cent), phenolic content(0.46 mg g-1) and reducing sugars (0.67 mg g-1). C:N ratio was narrowed down from 92:1 to 15:1, while nitrogen content increased to 1.39 per cent from 0.37 percent compared to uninoculated control (uninoculated MSW-WH compost). ?-glucosidase and urease enzyme activities were much pronounced upto 75 days from 0.05 to 1.69 Ul -1enzyme protein (?-glucosidase) and from 0.93 to 1.89 μ mol of ammonia formed mg -1enzyme protein (urease) in fungal consortium inoculated MSW-WH over the uninoculated MSW-WH compost.
Assessment of Methane Flux from Municipal Solid Waste (MSW) Landfill Areas of Delhi, India  [PDF]
Manju Rawat, AL Ramanathan
Journal of Environmental Protection (JEP) , 2011, DOI: 10.4236/jep.2011.24045
Abstract: Carbon dioxide, methane and nitrous oxide are the major Greenhouse Gases (GHG’s), which emit from landfill areas and contribute significantly to global warming. Moreover, that the global warming potential of methane is 21 times higher than that of carbon dioxide and it has highest generation (60%) than other gases. Therefore, there is immense concern for its abatement or utilization from landfill areas. Compared to the west, the composition of municipal solid waste (MSW) in developing countries has higher (40% - 60%) organic waste. This would have potential to emit higher GHG’s from per ton of MSW compared to developed world. Beside that landfills areas in India are not planned or en- gineered generally low lying open areas, where MSW is indiscriminate disposed. This leads to uncontrolled emission of trace gases, foul smell, bird menace, ground and surface water pollution etc. Due to scarcity of land in big cities, mu- nicipal authorities are using same landfill for nearly 10 - 20 years. Hence, the possibility of anaerobic emission of GHG’s further increases. In the present paper we had quantified the methane emission from three MSW landfill areas of Delhi i.e., Gazipur, Bhalswa and Okhla. The results showed that the range of methane emission various in winter from 12.94 to 58.41 and in Summer from 82.69 - 293 mg/m2/h in these landfill areas. The paper has also reviewed the literature on methane emission from India and the status of landfill areas in India.
The characteristics of nematode diversity in turf medium derived from municipal solid waste compost
生活垃圾堆肥基质草坪建植体系接种草坪土壤线虫多样性特征

DUO LiAn,LIAN Fei,ZHAO Shu-Lan,
多立安
,廉菲,赵树兰

生态学报 , 2009,
Abstract: This study investigated the characteristics of soil nematode diversity in nematode-inoculated turf medium derived from municipal solid waste (MSW) compest. After 4 months nematode inoculation, 4 families and 7 genera of nematodes were identified in the MSW compost medium, which belonged to three trophic groups, namely plant-parasites, fungivores and bacterivores. In the MSW compost medium the plant-parasite was the dominant trophic group with Rotylenchus was the dominant genus. The relative abundance (RA) of Rotylenchus was 83.3%, which was significantly higher than that in the background soil (control). However, the number of genera in MSW compost medium was less than that in the background soil. Cephalobus and Acrobeles of bacterivorous nematodes were found as the dominant genera in the MSW compost medium, with a RA of 67.0% and 14.0%, respectively. In contrast, Helicotylenchus and Rotylenchus, which were found as the dominant genera of plant-parasitic nematodes in background soil, were not found in the inoculated MSW compost medium, suggesting that MSW compost inhibited the growth and propagation of plant-parasitic nematodes. These findings suggest that MSW compost medium could provide a favorable environment for turfgrass growth.
Incineration of Pre-Treated Municipal Solid Waste (MSW) for Energy Co-Generation in a Non-Densely Populated Area  [PDF]
Ettore Trulli,Vincenzo Torretta,Massimo Raboni,Salvatore Masi
Sustainability , 2013, DOI: 10.3390/su5125333
Abstract: The planning actions in municipal solid waste (MSW) management must follow strategies aimed at obtaining economies of scale. At the regional basin, a proper feasibility analysis of treatment and disposal plants should be based on the collection and analysis of data available on production rate and technological characteristics of waste. Considering the regulations constraint, the energy recovery is limited by the creation of small or medium-sized incineration plants, while separated collection strongly influences the heating value of the residual MSW. Moreover, separated collection of organic fraction in non-densely populated area is burdensome and difficult to manage. The paper shows the results of the analysis carried out to evaluate the potential energy recovery using a combined cycle for the incineration of mechanically pre-treated MSW in Basilicata, a non-densely populated region in Southern Italy. In order to focalize the role of sieving as pre-treatment, the evaluation on the MSW sieved fraction heating value was presented. Co-generative (heat and power production) plant was compared to other MSW management solutions (e.g., direct landfilling), also considering the environmental impact in terms of greenhouse gases (GHGs) emissions.
Numerical simulation and experimental research on venting compression of municipal solid waste (MSW) in compressing-box
MSW箱内排气压缩数值模拟与实验研究

Li Tingting,Li Shuangyue,Jia Lin,Qi Haijun,Li Xiang,Jin Yinggui,
李庭婷
,李双跃,贾林,綦海军,李翔,金应贵

环境工程学报 , 2011,
Abstract: 结合有效应力原理与变形多孔介质渗流原理,给出了垃圾压缩过程的气固耦合方程,并给出了初始条件。针对封闭式垃圾压缩中转装置,提出了排气压缩原理,分析压缩机构的结构,构建垃圾压缩物理模型,应用ABAQUS数值模拟软件,探索城市固体垃圾(MSW)箱内排气压缩规律,并对传统封闭式垃圾压缩中转装置进行优化。实验表明,数值模拟与实验较吻合,优化后结构更利于提高垃圾压缩量与降低压缩能耗。
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.