NDLI: Quick Startup of EGSB Reactor Seeded with Anaerobic Digestion Sludge for the Treatment of Actual Domestic Sewage under Ambient Temperature

Content Provider	IEEE Xplore Digital Library
Author	Dong Chunjuan Li Qingwei Geng Zhaoyu Wang Haihui Wang Zengzhang
Copyright Year	2010
Abstract	To obtain the rapid startup of EGSB reactor seeded with anaerobic digestion sludge for the treatment of actual domestic wastewater under ambient temperature, two startup methods i.e. A and B were tried out at 25℃. For method A, reactor A (RA) was fed with brewery wastewater to incubate granular sludge and then treated domestic sewage, for method B, reactor B (RB) was fed with sanitary waste directly to bring up granular sludge. In RA, superficial flow rate of 2.9m.h-1 was employed to offer a suitable hydraulic condition. Primary HRT and OLR were set at 4h and 2.5-5.1kgCOD·m-3·d-1, respectively to select the predominant groups, and then by stepwise shortening HRT and increasing OLR, granulation completed within 46 days namely granules with diameter more than 0.45mm accounted for 86%. During this stage, more than 90% COD was removed even at OLR of 19.1 kgCOD·m-3·d-1. Then fed with domestic wastewater, about 80% COD removal was obtained after 15 days which meant a successful startup. For RB, superficial flow rate was set at 2.7m·h-1, and HRT of 1.2h-1.5h was used to increase the OLR of low strength domestic wastewater (149-615mg•l-1) to stimulate the microbial activity. Granulation was accomplished within 60 days, although granules with diameter larger than 0.45mm only took up 57%. At this time, COD removal was above 60% regardless influent fluctuate, which meant the successful startup. Compared with the inoculum, the specific methanogenic activity of RA and RB were increased from the original 0.22gCODCH4•gVSS-1•d-1 to 0.75 gCODCH4•gVSS-1•d-1 and 0.58 gCODCH4•gVSS-1•d-1, respectively. The experimental result showed that both methods could start up successfully within two months. Nevertheless, granulation could be accelerated and higher activity of granular sludge could be obtained through method A so as to treat domestic sewage efficiently and stably in a short stage.
Starting Page	1
Ending Page	3
File Size	245546
Page Count	3
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5515567
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Chemical industry Temperature Educational institutions Environmental factors Biomass Acceleration Inductors Sludge treatment Wastewater treatment Chemical technology
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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