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COD removal and nitrification of low-strength domestic wastewater in aerobic granular sludge sequencing batch reactors

Paper ID Volume ID Publish Year Pages File Format Full-Text
18599 42727 2007 6 PDF Available
Title
COD removal and nitrification of low-strength domestic wastewater in aerobic granular sludge sequencing batch reactors
Abstract

Acetate-fed granules were used to start-up reactors for the treatment of low-strength domestic wastewater at 25 °C (R1) and 35 °C (R2). Two hundred milligrams per liter COD in domestic wastewater was easily removed. Granular seeds acclimated to NH4+-N removal after domestic wastewater was used and the specific NH4+-N removal rate increased linely after 7-day operation. Effluent NH4+-N was below 5 mg l−1 and NH4+-N removal efficiency increased to above 90% after 22-day operation with cycle time of 2 h in both reactors with 0.3 kg m−3 day−1 NH4+-N loading rate. In addition, granular seeds cultivated at 25 °C showed good adaptation to higher temperature and the granules in R2 at 35 °C showed good stability in 4-month operation.

Keywords
Low-strength domestic wastewater; Aerobic granules; Sequencing batch reactor; Nitrification; COD removal; Temperature
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COD removal and nitrification of low-strength domestic wastewater in aerobic granular sludge sequencing batch reactors
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 42, Issue 1, 3 December 2007, Pages 23–28
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us