Enhanced Biodegradability of Aerobic Sludge by Bioaugmentation for Pulping Effluent Treatment

BioResources

Guihua Yang¹  Jiachuan Chen¹  Honglei Chen¹  Yu Liu¹ 

[1] State Key Lab of Pulp and Paper Science and Technology of the Ministry of Education, Qilu University of Technology, Jinan, 250353, Shandong, China;

关键词: Pulping effluent;    Aerobic activated sludge;    Kinetics;    Bioaugmentation;   

DOI  :  10.15376/biores.9.2.2143-2153

来源: DOAJ

【 摘 要 】

To demonstrate the feasibility of bioaugmentation in enhancement of the biodegradation of pulping effluent, aerobic sludge was intensified with superior mixed flora. The differences between intensified aerobic activated sludge and original sludge were compared. The results showed that the chemical oxygen demand (COD) of pulping effluent treated with the intensified sludge dropped to a much lower level compared with the original sludge, which indicated that the biodegradability of sludge was enhanced by bioaugmentation. The growth kinetics of the sludges were established. The growth rate Vmax of the intensified sludge was elevated from 7.8×10-3 to 7.1×10-3, while the saturation constant Ks decreased from 0.33 to 0.21 after bioaugmentation. In addition, the degradation kinetics showed that the equation coefficient of sludge increased from 4.6×10-3 to 6.4×10-3, confirming the intensification of biodegradation as a result of bioaugmentation.

【 授权许可】

Unknown