| Summary: | 碩士 === 逢甲大學 === 土木及水利工程所 === 93 === ABSTRACT
There are three major river water pollution sources in Taiwan, respectively, domestic sewage, industrial waste water and livestock breeding, According to the Environment protection Statistic Manual published by Environmental Protection Administration, Executive Yuan in 2003, the discharging amount of domestic sewage had exceed 55%, industrial waste water 28% and livestock breeding 17%.
Furthermore, with the prosperous of industrial and commercial developments and the highly concentrated population in city, large amount of waste water (sewage) has discharged to rivers and usually exceed the capacity of rivers largely; consequently, the rivers of various sizes in Taiwan have been polluted in different degrees.
As for the dredging of river pollution, the Environmental Protection Administration has applied eco-technology to improve the river water quality since 2002 in order to comply with the tendency of sustainable development, and expecting to reduce pollution and carry out the purpose of environment conservation.
Currently, in addition to control pollution sources actively, the Environmental Protection Administration also promotes the eco-technology based water purification project to improve pollution caused by domestic sewage effectively by water cutting. Eco-technology is to adopt ecology based and safety oriented construction method based on the cognition of eco-system and carry out diversified conservation of creatures and continuous development.
The technologies include vegetation engineering (wetland, chinampa, phytoplankton, swales, grass strip, and planting filter); soil treatment (irrigation treatment and underground leachate), and contact oxidization (gravel contact, filling filter, deep pool and torrent).
The purpose of the thesis is focused on the discussion of contact oxidization in river, and use gravel filling filter to process experimental research and assess the effective of water quality purification treatment.
Keywords: Eco-technology, Contact oxidization, Gravel contact, Filling filter
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