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Carbon and nitrogen removal using a novel horizontal flow biofilm system

Paper ID Volume ID Publish Year Pages File Format Full-Text
36108 45121 2006 6 PDF Available
Title
Carbon and nitrogen removal using a novel horizontal flow biofilm system
Abstract

This 365-day laboratory study examined the performance of a novel horizontal flow biofilm reactor (HFBR) system in the treatment of a synthetic domestic-strength wastewater. The HFBR system comprised two biofilm reactors positioned one above the other: Reactor 1 contained a stack of 8 horizontal plastic sheets with 25 mm high spacing frustums and Reactor 2, under Reactor 1, contained a stack of 18 horizontal sheets with 11 mm high frustums. The sheets were arranged so that when the wastewater was pumped onto the top sheet of Reactor 1, for 10 min every hour, it flowed along that sheet, and onto and back along the sheet underneath, and so on down through the system, resulting in biofilm development on the sheets. The hydraulic and filtered chemical oxygen demand (CODf) loading rates were 155 l/(m2 d) and 47 g/(m2 d), respectively, based on the system plan area. The effluent CODf concentration was 33 mg/l. Nearly full nitrification occurred with 56% total nitrogen (TN) reduction at the loading rate of about 4.7 g TN/(m2 d). During the study period, the solids yield was only 0.1 g SS/g CODf removed. The system was easy to construct and operate, did not clog and could be used for complete biodegradable COD removal, nitrification and partial nitrogen removal.

Keywords
Biofilm; Horizontal flow reactor; Carbon and nitrogen removal; Nitrification
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 11, November 2006, Pages 2270–2275
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