排序方式: 共有13条查询结果,搜索用时 31 毫秒
1.
Chart Chiemchaisri Wilai Chiemchaisri Kittipon Chittanukul Wiwattana Soontornlerdwanich Nathiya Tanthachoon 《Journal of Material Cycles and Waste Management》2010,12(2):161-168
The effect of leachate irrigation on methanotrophic activity in sandy loam-based landfill cover soil with vegetation was investigated.
Laboratory-scale experiments were conducted to investigate the methane oxidation reaction in cover soil with and without plants
(tropical grass). The methane oxidation rate in soil columns was monitored during leachate application at different organic
concentrations and using different irrigation patterns. The results showed that the growth of plants on the final cover layer
of landfill was promoted when optimal supplement nutrients were provided through leachate irrigation. The vegetation also
helped to promote methane oxidation in soil, whereas leachate application helped increase the methane oxidation rate in nonvegetated
cover soil. Intermittent application of leachate (once every 4 days) improved the methane oxidation activity as compared to
daily application. Nevertheless, the adverse effects of organic overloading on methane oxidation rate and plant growth were
also observed. 相似文献
2.
Sutthasil Noppharit Chiemchaisri Chart Chiemchaisri Wilai Ishigaki Tomonori Gheewala Shabbir H. 《Journal of Material Cycles and Waste Management》2023,25(2):662-673
Journal of Material Cycles and Waste Management - Landfilling is the main technology for municipal solid waste (MSW) disposal in Thailand. Semi-aerobic landfill and mechanical biological treatment... 相似文献
3.
Tanthachoon N Chiemchaisri C Chiemchaisri W Tudsri S Kumar S 《Journal of the Air & Waste Management Association (1995)》2008,58(5):603-612
The effect of compost and vegetation on methane (CH4) oxidation was investigated during wet and dry conditions in a tropical region. A laboratory-scale experiment was conducted to examine the performance of nonvegetated and vegetated landfill cover systems in terms of CH4 oxidation efficiency. Two types of landfill cover materials (compost and sandy loam) and two species of tropical grasses (Sporobolus virginicus and Panicum repens) were studied for their effect on the CH4 oxidation reaction. It was found that the use of compost as cover material could maintain a high methane oxidation rate (MOR) of 12 mol CH4/m3 x day over a 250-day period. Leachate application showed a positive effect on promoting methanotrophic activity and increasing MOR. A high MOR of 12 mol CH4/m3 x day was achieved when using compost cover with P. repens during wet and dry seasons when leachate irrigation was practiced. In dry conditions, a lower MOR of 8 mol CH4/m3 x day was observed for 80 days. 相似文献
4.
Yuka Ogata Tomonori Ishigaki Yoshitaka Ebie Noppharit Sutthasil Chayanid Witthayaphirom Chart Chiemchaisri Masato Yamada 《Journal of Material Cycles and Waste Management》2018,20(4):1961-1968
In tropical regions, landfill leachate contamination at municipal solid waste disposal sites is a critical issue because of the large volume of highly contaminated leachate formed during the rainy season. We evaluated the efficacy of constructed wetlands (CWs) with the ability to reduce the water volume and pollutant levels to reduce leachate contamination compared to the most commonly used treatment system, stabilization ponds, based on parameters obtained in a field experiment in Thailand. The simulation indicated that CWs had a higher potential to reduce the water volume than stabilization ponds over the course of a year. Scenario evaluations under varying initial water depths, system depths, and area sizes indicated that the CWs could reduce the treatment area to prevent overflow and leachate pollution. In addition, the CWs were estimated to reduce the leachate amount and pollution by 83–100% and 92–99%, respectively. When there is limited land available, deeper CWs can be used to sustainably prevent contamination from leachate overflow. Effectively designed CW systems may be valuable for both reducing the required area and the contamination; therefore, CWs are a promising option for sustainable landfill leachate treatment systems in developing tropical regions. 相似文献
5.
Ogata Yuka Ishigaki Tomonori Ebie Yoshitaka Sutthasil Noppharit Witthayaphirom Chayanid Chiemchaisri Chart Yamada Masato 《Journal of Material Cycles and Waste Management》2018,20(4):2163-2163
Journal of Material Cycles and Waste Management - In the original publication of the article, Eq. 5 was published incorrectly. The correct equation is given below. 相似文献
6.
Chiemchaisri C Chiemchaisri W Kumar S Hettiaratchi JP 《Environmental monitoring and assessment》2007,135(1-3):41-48
Solid waste characteristics and landfill gas emission rate in tropical landfill was investigated in this study. The experiment
was conducted at a pilot landfill cell in Thailand where fresh and two-year-old wastes in the cell were characterized at various
depths of 1.5, 3, 4.5 and 6 m. Incoming solid wastes to the landfill were mainly composed of plastic and foam (24.05%). Other
major components were food wastes (16.8%) and paper (13.3%). The determination of material components in disposed wastes has
shown that the major identifiable components in the wastes were plastic and foam which are resistant to biodegradation. The
density of solid waste increased along the depth of the landfill from 240 kg m−3 at the top to 1,260 kg m−3 at the bottom. Reduction of volatile solids content in waste samples along the depth of landfill suggests that biodegradation
of solid waste has taken place to a greater extent at the bottom of the landfill. Gas production rates obtained from anaerobic
batch experiment were in agreement with field measurements showing that the rates increased along the depth of the landfill
cell. They were found in range between 0.05 and 0.89 l kg−1 volatile solids day−1. Average emission rate of methane through the final cover soil layer was estimated as 23.95 g−2day−1 and 1.17 g−2day−1 during the dry and rainy seasons, respectively. 相似文献
7.
8.
中国科学院农业科技领域发展路线图研究组 《生态环境》2010,19(8):1765-1770
2010年6月7日,国家主席胡锦涛在两院(中国科学院、中国工程院)院士大会上针对农业科技明确指出:构建我国生态高值农业和生物产业体系,建成农业高值转化的产业体系。本文对"生态高值农业"进行论述。所谓生态,就是要体现农业既能为社会提供安全优质的农产品又能实现农业资源的永续利用,将农业纳入可持续发展的道路;所谓高值,就是要体现农业有很高的土地产出率、投入产出率、劳动生产率。因此,"生态高值农业"是集约化经营与生态化生产有机结合的现代农业。它以健康消费需求为导向,以提高农业市场竞争力和可持续发展能力为核心,兼有高投入、高产出、高效益与可持续发展的双重特性,是转变农业增长方式、提高农业综合生产能力的集中体现。 相似文献
9.
Komsilp Wangyao Sirintornthep Towprayoon Chart Chiemchaisri Shabbir H. Gheewala Annop Nopharatana 《Environmental monitoring and assessment》2010,164(1-4):249-261
Measurements of landfill methane emission were performed at nine solid waste disposal sites in Thailand, including five managed sanitary landfills (four deep and one shallow landfills) and four unmanaged landfills (three deep and one shallow dumpsites). It was found that methane emissions during the rainy season were about five to six times higher than those during the winter and summer seasons in the case of managed landfills and two to five times higher in the case of unmanaged landfills. Methane emission estimate using the Intergovernmental Panel on Climate Change (IPCC) Waste Model was compared with the actual field measurement from the studied disposal sites with methane correction factors and methane oxidation factors that were obtained by error function analysis with default values of half-life parameters. The methane emissions from the first-order decay model from the IPCC Waste Model yielded fair results compared to field measurements. The best fitting values of methane correction factor were 0.65, 0.20, 0.15, and 0.1 for deep landfills, shallow landfills, deep dumpsites, and shallow dumpsites, respectively. Using these key parameters in the case of Thailand, it was estimated that 89.22 Gg of methane were released from solid waste disposal sites into the atmosphere in 2006. 相似文献
10.
Chiemchaisri C Visvanathan C 《Journal of the Air & Waste Management Association (1995)》2008,58(5):629-635
Open dumping and landfilling are the prevalent solid waste disposal practices in Thailand. Surveys on the disposal sites revealed the presence of 95 landfills and 330 open dumps. Methane emission potential at these sites was estimated by three methods. Results of the Intergovernmental Panel on Climate Change (IPCC) method, Landfill Gas Emission model (LandGEM), and closed flux chamber technique were compared. The methane emission potential of 366 Gg/yr using the IPCC method was higher than the estimations of the LandGEM and closed flux chamber method of 115 Gg/yr and 103 Gg/yr, respectively. An understanding of the methane emission potential initiated the analysis of upgrading the open dumps into landfills, adding landfills to meet the future needs and utilization of landfill gases. Upgrading the open dumps to landfills increased the methane emission rates and their utilization potential. Approximately 20 additional landfills may be required to meet future demands. Landfill gas (LFG) utilization appears to be feasible in the large-scale landfills. 相似文献