| Title |
A Study on the Kinetic Coefficient and Sludge Production for Activated Sludge Process without Primary Clarifier |
| Authors |
황규대 ; 김복현 ; 정윤진 ; 조종복 ( Gye Dae Whang ; Bok Hyun Kim ; Woon Jin Chung ; Jong Bok Cho ) |
| Abstract |
The study was carried out to determine the kinetic coefficients and optimum treatment conditions and to evaluate the mass balance for sludge production in activated sludge process without primary clarifier. Eight bench-scale activated sludge units were operated under different operating conditions and by using incoming wastewater to two small scale wastewater treatment plants. The optimum treatment conditions were 8 hours of HRT and 8 days of SRT for $quot;A$quot; plant wastewater and 8 hours of HRT and 3 days of SRT for $quot;B$quot; plant wastewater. The calculated kinetic coefficients, sludge yield coefficients(Y) and decay coefficients (K_d) were 0.695 ㎎ MLVSS/㎎ COD, and 0.186 day^(-1) for $quot;A$quot; plant wastewater and 1.064 ㎎ MLVSS/㎎ COD, and 0.252 day^(-1) for $quot;B$quot; plant wastewater. The amount of sludge calculated by using the proposed solids mass balance model were well agreed with the amount of sludge produced from activated sludge process. |