Economical Analysis of Oyster Shells Contact Bed in astewater Treatment
Date Issued
2009
Date
2009
Author(s)
Chang, Chu- Fu
Abstract
Abstractn this study, the first use of domestic shell fine gravel Vitex contact polishing method disposal of sewage and water treatment systems and to consider funding for an analysis between the processing mode to explore better and more appropriate to deal with the relative amount. Is first of all to take water samples every day for 8 weeks, and complete the BOD, SS, NH3+, TP, which represented BOD experiment to study the input-output model, and divided into five kinds of mechanisms, and then use the amount of construction as a mode field increase in the total cost curve model, and because of environmental improvement and benefit of the yield curve, and then proceeded to cross the two curves obtained by the graphics processing to the amount calculated from the theory of optimal function, and by taking advantage of economic analysis, to derive the most efficient manner. Theory of the processing function, in the Double-guided flood water Watercourse Kanding stream within the set of artificial gravel-bed pilot treatment for cases of different inter-gravel contacts made of special materials of engineering properties and engineering design parameters, the effectiveness of water treatment as well as design attention to such matters. The treatment area of about 1000 square meters, divided into five processing mechanism, namely the level of flow aeration tank oyster shell, gravel trough level of flow, the level of flow trough oyster shell, oyster shell bag net vertical shafts and vertical-flow bulk oyster tank shell, that is, natural gravel and shell theory Vitex for materials, such as the use of gravel on the surface of the biofilm, the organic nutrients in water consumption and decomposition, that is, through exposure to precipitation, adsorption, oxidation, etc. in order to purify the water quality effectiveness. Artificial gravel bed of gravel and sandstone shell Vitex artificial stack with the main mining. After nearly 120 days of operation of operation, and a month and receive regular desilting emptying sewage and BOD, SS, NH3+, TP removal rates and the amount to be dealt with the theory of function and economic analysis, in order to enhance gravel method of contact to promote practical.
Subjects
Gravel-Packed Reactor
Oyster shell theory
Water Quility
biofilm
Economic Analysis
Type
thesis
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