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Study on phosphorus removal using a coagulation system

Paper ID Volume ID Publish Year Pages File Format Full-Text
36447 45133 2005 5 PDF Available
Title
Study on phosphorus removal using a coagulation system
Abstract

This study has determined the conditions for operation of a phosphorus-removal system using coagulation–filtration to gain high efficiency and has confirmed its practicability. Sand of 0.6 mm in diameter, anthracite of 1.2 mm in diameter and a mixture of both were tested as filter media. The dual filter bed was proved to be superior in terms of pressure drop and breakthrough. This system was operated continuously for over 20 h. A blocked filter bed can be recovered by backwashing. Over 80% phosphorus removal efficiency is achieved at an LV of under 5.0 m h−l, when the PAC dose is controlled so that the Al/P mole ratio would be 3.0 for the first period, and then subsequently around 2.0. Flocs caught in the filter further adsorb the soluble phosphorus in the wastewater. Thus, the chemical requirement can be reduced compared to the chemical precipitation method.

Keywords
Coagulation; Filtration; Phosphorus; Al/P mole ratio; Sand; Anthracite; Secondary effluent
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 8, July 2005, Pages 2623–2627
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