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The Environmental Benefit Analysis Of Classified Rural Waste Burned

Posted on:2012-01-24Degree:MasterType:Thesis
Country:ChinaCandidate:Y ZhouFull Text:PDF
GTID:2131330335987979Subject:Environmental Science
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China is a big agricultural country, about 80% of the population live in rural areas. With the improvement of living standards, the rural living garbage composition and production increases, garbage pollution problem also more and more serious.Therefore, this paper make Gao xing Zhen of Xing Guo in Jiangxi province as an example. Paper on rural living garbage output and structure of masses, combining local investigation garbage attitude, using ahp rural living garbage disposal were the best scheme. At the same time glad that the town establish waste incineration station, and its environmental impact assessment incineration flue gas. Papers for rural living garbage processing provides a new program, but also for future waste disposal in rural areas provide a similar theoretical and practical basis.According to a survey of villagers, we can see that municipal waste is more complex than the rural waste, The component part of rural life garbage mainly is kitchen wet waste and dry waste. Most of kitchen wet waste was treatmented, but dry waste almost was not processed. With the improvement of living standards, the villagers' environmental awareness is more and more strong. most villagers have consciousness of garbage classification, but waste classification was not so careful.In order to know the output of rural life garbage in Xingguo village, between 2009 and 2010,we investigate the output of rural life garbage at Gaoxing country where Xingguo village's government seat.The other investigated country is Laoxu country which is far away from the village. According to the survey, we predict in Gaoxing country everyone produce wet waste 33.09 grams everydays and dry waste 23.695 gram everydays, so the output of garbage is 56.785 grams per capita everydays. Amount to onel year, Gaoxing country produced wet waste 621.2 t/a, dry waste 444.8 t/a, garbage total 1066t/a.In order to learn more about the rural life garbage composition and its relevant physical properties,we checkout the waste fractions, bulk density, moisture content, ash content. According to the dating results, rural life garbage physical composition mainly about: organic plant, organic animals, paper, plastic, plaster brick of pottery, textiles, wood and glass.The average moisture content is72.226%.The burnable content is high,it attain 94.783%. According to the calculated results, the low calorific value of rural life garbage is 2736.073 kJ/kg. The low calorific value of dry compost is 5147.321 kJ/kg.dry mixed waste can be achieved low calorific value calorific value of waste incineration requirements.Combined with the natural and social factors master in Xingguo village, local waste condition analysis, research area economic conditions, local environment quality conditions and distribution law and policy, etc; four kinds of garbage disposal scheme technical factors, environmental impact, economic benefit and social; through expert anonymous scoring method, AHP to work out, garbage incineration is the final weight of 0.2856, is the best option.According to monitor the project evaluation hierarchies, Gaoxing country waste incineration flue gas atmospheric environmental impact assessment rating for the level 3, directed by calculating results of estimating model as forecast analysis basis. Analysis and forecasting results show that the accounted for standard rate of each pollutant in the unclassified and classified waste incineration flue gas is lesser than 1%, therefore the impact on the surrounding air quality is not great.The unclassified and classified waste incineration flue gas were compared:the changing trend of burn gas basically the same. But the largest concentration of landing distance of unclassification garbage is far more than classification garbage, respectively 315m and 289m.For classification garbage,it not only enhance the low calorific value of garbage and is more advantageous to burn,but also reduce atmospheric pollutants, reducing waste incineration impact to surrounding environment.At the same time,we calculated the atmospheric environmental protective distance and health protection distance. Health protection distance of 50 meters, without setting the atmospheric environment outside the plant protection zone, whichever is maximum, that is, protection from the incinerator is 50 meters.
Keywords/Search Tags:Garbage in rural areas, Production and characterization of solid waste, Analytic hierarchy process (ahp), Classified garbage burned, Environmental impact assessment
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