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DOI : ,    Vol.8, No.2, 19 ~ 26, 2000
Title
Study on High - rate Anaerobic Granular Sludge Process as Pretreatment Process with Loading Rates of Organic Wastewater
최정우Jeong Woo Choi,현길수Kil Soo Hyun
Abstract
Effects of high-rate anaerobic granular sludge(HAGS) process as pretreatment process for organic wastewaters treatment were investigated and evaluated with organic loading. Based on the results of this research, for high organic loadings of 10,000∼20,000㎎ COD/L, COD removal ranged from 81 to 92% with pH of 6.8∼7.7, alkalinity of 2,500㎎/L as CaCO₃, and volatile fatty acid(VFA) to bicarbonate alkalinity(RA) ratio (VFA/BA) of 0.2. The following equation from the relationship between COD loadings and energy yield was given: E_Y=0.85C_L+0.763. For COD concentration of 250∼2,000㎎/L, COD removals were more than 90% with pH of 7.38∼7.8, alkalinity of 400∼1,690㎎/L as CaCO₃, and VFA/BA of less than 0.01. The above results show the feasibility that the HAGS process as anaerobic treatment process can be applied for wastewater with low organic level as well as the high organic level.
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