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Received: 2003-06-18

Revision Accepted: 2003-11-12

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Journal of Zhejiang University SCIENCE A 2004 Vol.5 No.6 P.727~732


ATP content and biomass activity in sequential anaerobic/aerobic reactors

Author(s):  CHEN Hong

Affiliation(s):  Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   hchen@tom.com

Key Words:  ATP, Biomass activity, Sequential anaerobic/aerobic, UASB reactor, AFB reactor

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CHEN Hong. ATP content and biomass activity in sequential anaerobic/aerobic reactors[J]. Journal of Zhejiang University Science A, 2004, 5(6): 727~732.

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Specific ATP content of volatile solids was measured to characterize the sludge activity in a sequential anaerobic/aerobic wastewater treatment system, with an upflow anaerobic sludge blanket (UASB) reactor and a three-phase aerobic fluidized bed (AFB) reactor. The wastewater COD level was 2000-3000 mg/L in simulation of real textile wastewater. The ATP content and the specific ATP contents of volatile solids at different heights of the UASB reactor and those of the suspended and immobilized biomass in the AFB reactor were measured. In the UASB reactor, the maximum value of specific ATP (0.85 mg ATP/g VS) was obtained at a hydraulic retention time (HRT) 7.14 h in the blanket solution. In the AFB reactor, the specific ATP content of suspended biomass was higher than that of immobilized biomass and increased with hydraulic retention time reaching a maximum value of 1.6 mg ATP/g VS at hydraulic retention time 4.35 h. The ATP content of anaerobes in the UASB effluent declined rapidly under aerobic conditions following a 2nd-order kinetic model.

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