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Applicable Feasibility of Fenton Oxidation and Zeolite Ion Exchange Processes for Removal of Non-Biodegradable Matters and Ammonia in Livestock Wastewater  

Cho, Chang-Woo (Public Health Environment Institute of Jeollabuk-do)
Kim, Byoung-Young (Public Health Environment Institute of Jeollabuk-do)
Chae, Soo-Choen (Public Health Environment Institute of Jeollabuk-do)
Chung, Paul-Gene (Department of Environmental Engineering, Chonbuk National University)
Publication Information
Journal of Korean Society on Water Environment / v.23, no.5, 2007 , pp. 600-606 More about this Journal
Abstract
Livestock wastewater containing concentrated organic matters and nutrients has been known as one of the major pollutants. It is difficult to apply the conventional activated sludge process to treat livestock wastewater because of high Non-biodegradable (NBD) matter and ammonia. The objectives of this study are to remove NBD matters including aromatic compounds and ammonia in livestock wastewater using Coagulation-Fenton oxidation-Zeolite (CFZ) processes and ascertain applicable feasibility in the field through pilot plant experiment. NBD matters and color remained in the treated water were removed over 92% by Fenton oxidation as the second treatment process. Ammonia was removed by over 99.5% in the zeolite ion exchange process as the last treatment method. From $UV_{254}$, $E_2/E_3$ ratio and GC/MS analyses of treated water at each process, the aromatic compound was converted to aliphatic and aromaticity was decreased. In pilot scale test, organics and ammonia removal efficiencies were not much different from the result of lab-scale test at various operation conditions. Furthermore, reaction time and dosage of Fenton reagent in pilot scale experiment reduced by 40 min and 50% rather than in lab-scale test. $BOD_5$, $COD_{Mn}$, SS, T-N and T-P of treated water in the pilot-scale experiment also met the effluent standards.
Keywords
Fenton oxidation; Livestock wastewater; Non-biodegradable (NBD) matter; Zeolite ion exchange;
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