Effects of temperature on combined process of ABR and MBR for domestic sewage treatment and analysis of microbial community

Effects of temperature on the combined process of ABR and MBR ( CAMBR) for domestic sewage treatment were investigated and the changes in the bacterial community structure were analyzed by PCR-DGGE technique. The HRT, recycle ratio 1, recycle ratio 2, pH and DO were 7.5 h, 200% , 50%, 6.5~8.5 and 3...

Full description

Saved in:
Bibliographic Details
Published inHuanjing kexue Vol. 35; no. 9; p. 3466
Main Authors Wu, Peng, Lu, Shuang-jun, Xu, Yue-zhong, Liu, Jie, Shen, Yao-liang
Format Journal Article
LanguageChinese
Published China 01.09.2014
Subjects
Bacteria
Bioreactors - microbiology
Nitrogen - chemistry
Phosphorus - chemistry
Sewage - microbiology
Temperature
Waste Disposal, Fluid - methods
Online AccessGet more information

Cover

More Information
Summary:Effects of temperature on the combined process of ABR and MBR ( CAMBR) for domestic sewage treatment were investigated and the changes in the bacterial community structure were analyzed by PCR-DGGE technique. The HRT, recycle ratio 1, recycle ratio 2, pH and DO were 7.5 h, 200% , 50%, 6.5~8.5 and 3 mg.L-1, respectively. The temperature were controlled at three gradients: middle (25°C ±5°C ), low (10°C±5°C) and high (35°C±5°C ). The results showed that the change of temperature had little influence on COD removal, and the CAMBR in stable state showed good performance in COD removal. In addition, the CAMBR achieved good effluent quality in middle or high temperature environment, and the average TN removal efficiency was 70% with an effluent TN of 9 mg L-1, and the average TP removal efficiency was 73% with the effluent TP below 0. 8 mg L-1. For the process operated in low temperature environment, the average TN removal efficiency was only 57% with an effluent TN of 15 mg L-1, and the average TP removal efficien
ISSN:0250-3301
DOI:10.13227/j.hjkx.2014.09.031