Study of Agricultural Waste Recycling and Collection Model
Date Issued
2014
Date
2014
Author(s)
Fang, Shing-Shyong
Abstract
In Taiwan, agricultural process usually accompanies with a large amount of agricultural waste, which requires appropriate treatment. The untreated agricultural waste will cause serious environmental problems. Agricultural wastes are organic- and nutrient-rich materials, which are important bio-resources. Thus, collection and recycling of agricultural waste is an important environmental issue in Taiwan. This study investigated the recent generation of agricultural wastes and their reuse in Taiwan. The agricultural wastes can be divided into regulated and unregulated items. The top five regulated agricultural waste items were waste distillers’ grains/alcohol mash, livestock and poultry feces, sugarcane filter cake, food processing sludge, and bagasse, accounted for 67% of the total amount of regulated agricultural waste. According to the treatment capacity of reuse technologies, the order for reuse types is as follows: feed raw material (43%), compost (32%), reused raw material (15%), as a fuel feedstock only was less than 1%. Among the unregulated agricultural wastes, rice husk and rice straw was the largest. Straw was regarded as an agricultural waste in Taiwan and usually burnt in the field, which cause serious air pollution. In this study, the field survey for rice straw collection and transportation and their cost analysis were conducted to build the model of collection and transportation for rice straw in Taiwan. The future studies should focus on the development of regeneration, renewable energy, and pollution treatment. The cellulose-rich bagasse, rice husk and rice straw can be converted to fiber alcohol, fiber cellulose, biochar and activated carbon. Nutrient-rich agricultural waste such as swine manure and algae can be used as the nutrients to produce algal diesel and microbial fuel cells. In Taiwan, typhoons usually result in a large amount of waste that needs to be removed in a short time. Waste, tree branches and bird carcasses were primarily incinerated, while silt and building materials were buried, and pig and cattle carcasses were placed in a landfill with the tertiary treatment of wastewater. This study also reports on the relevant regulations for prevention of epidemics among personnel working in disaster areas. The results can provide important references for the disposal of typhoon waste in developing countries.
Subjects
農業廢棄物
稻稈
風災廢棄物
廢棄物管理
再利用
Type
thesis
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