DocumentCode :
1707591
Title :
Quick start-up activated sludge system by inoculating primary sludge
Author :
Wan, Qiong ; Peng, Dang-cong ; She-ping Wang ; Sun, Hong-fang
Author_Institution :
Sch. of Environ. & Municipal Eng., Xi´an Univ. of Archit. & Technol., Xi´an, China
Volume :
2
fYear :
2011
Firstpage :
1554
Lastpage :
1557
Abstract :
Inoculating excess sludge was adopted by most wastewater treatment plants (WWTP). But inoculating excess sludge has these problems usually: high cost for buying, transportation and dosing number seeding sludge, and activated sludge having lag phase. Inoculating primary sludge is supposed a promising method. The total bacterial count of the influent and effluent was detected by DAPI (4´, 6-diamidino-2-phenylindole) staining in primary sedimentation. And the total bacterial count of the effluent was 9.7% of that in the influent on an average. Most of bacterial was settled with primary sludge. The comparative study has been done about the start-up of an activated sludge system by inoculating primary sludge and no primary sludge. The result showed that: at 20°C, in the system which was inoculated primary sludge, the mixed-liquor suspended solids (MLSS) was 2815mg/L, the ammonia nitrogen and Chemical Oxygen Demand(COD) in effluent were 0.65 mg/L and 47.6 mg/L respectively on the 9th day, so the start-up was succeed. Primary sludge is a kind of cheap seeding sludge, which can be obtained easily in WWTP, and the activated sludge system can be quick started up easily by inoculating primary sludge.
Keywords :
ammonia; effluents; microorganisms; sedimentation; sludge treatment; wastewater treatment; ammonia nitrogen; chemical oxygen demand; effluent; influent; mixed-liquor suspended solids; primary sedimentation; primary sludge inoculation; quick start-up activated sludge system; temperature 20 C; total bacterial count; wastewater treatment plant; Inductors; Chemical Oxygen Demand; ammonia nitrogen; mixed-liquor suspended solids; primary sludge; start-up;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
Type :
conf
DOI :
10.1109/ISWREP.2011.5893325
Filename :
5893325
Link To Document :
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