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http://dx.doi.org/10.9713/kcer.2016.54.2.248

Simulation Analysis of Sludge Disposal and Volatile Fatty Acids Production from Gravity Pressure Reactor via Wet Air Oxidation  

Park, Gwon Woo (Biomass and Waste Energy Laboratory, KIER)
Seo, Tae Wan (Environmental and Plant Engineering Research Institute, KICT)
Lee, Hong-Cheol (Environmental and Plant Engineering Research Institute, KICT)
Hwang, In-Ju (Environmental and Plant Engineering Research Institute, KICT)
Publication Information
Korean Chemical Engineering Research / v.54, no.2, 2016 , pp. 248-254 More about this Journal
Abstract
Efficacious wastewater treatment is essential for increasing sewage sludge volume and implementing strict environmental regulations. The operation cost of sludge treatment amounts up to 50% of the total costs for wastewater treatment plants, therefore, an economical sludge destruction method is crucially needed. Amid several destruction methods, wet air oxidation (WAO) can efficiently treat wastewater containing organic pollutants. It can be used not only for sludge destruction but also for useful by-product production. Volatile fatty acids (VFAs), one of many byproducts, is considered to be an important precursor of biofuel and chemical materials. Its high reaction condition has instituted the study of gravity pressure reactor (GPR) for an economical process of WAO to reduce operation cost. Simulation of subcritical condition was conducted using Aspen Plus with predictive Soave-Redlich-Kwong (PSRK) equation of state. Conjointly, simulation analysis for GPR depth, oxidizer type, sludge flow rate and oxidizer injection position was carried out. At GPR depth of 1000m and flow rate of 2 ton/h, the conversion and yield of VFAs were 92.02% and 0.17g/g, respectively.
Keywords
Wet Air Oxidation; Gravity Pressure Reactor; VFAs; Sludge Disposal; Simulation Analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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