| Summary: | 碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 96 === Abstract
Student ID: N9031003
Title of Thesis: The Treatment of Landfill Leachate by Electrocoagulation System
Total Pages: 138
Name of Institute: National Pingtung University of Science and Technology
Name of Department: Department of Environmental Science and Engineering
Date of Graduation: Jan, 2008 Degree Conferred: Master
Name of Student: Chao-Liang Yeh Adviser: kuo-ching chang, ph.D.
The Contents of Abstract in this Thesis:
In the present study, Electrocoagulation System, efficient in COD destruction and color removal of waste water, was employed to treat landfill leachate which looks dark brown, smells stinky, contains trace heavy metals and high solid contents, and has high concentrations of salinity, ammonium, and COD.
The study consists of two experiments. The first one used pilot plant test to determine optimum operating conditions. The second one applied the previous results to evaluate the efficiency of Electrocoagulation System and estimate the operating costs.
The results of the first experiment indicated that the optimum operating conditions for electrocoagulation with fixed applied voltages and DC(50V and 100A) were pH=8, 10minutes hydraulic retention time (HRT). The results of the second experiment showed that the removal of 30~38% COD, 49~54% BOD, 65~76% SS was achieved. In addition, the total iron residual was 1.0~1.3mg/L and the average increase in water temperature was 0.5~0.8 ℃.
The operating cost analysis led to the conclusion that the cost of employing Electrocoagulation System to treat one ton of landfill leachate was NT$16.9 dollars.
Key words：Electrocoagulation System、landfill leachate、COD
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