Nutrient removal in three oxidation ditch plants

De Haas, David W. (2005) Nutrient removal in three oxidation ditch plants. Water Journal, 32 6: 56-59.

Author De Haas, David W.
Title Nutrient removal in three oxidation ditch plants
Journal name Water Journal   Check publisher's open access policy
ISSN 0310-0367
Publication date 2005
Sub-type Article (original research)
Volume 32
Issue 6
Start page 56
End page 59
Total pages 4
Place of publication Artamon, N.S.W.
Publisher Australian Water Association
Language eng
Subject 090409 Wastewater Treatment Processes
Abstract This paper summarises the performance of three biological nutrient removal sewage treatment plants in Queensland (Australia), These plants are "extended aeration" types, treating screened, degritted raw sewage using a configuration similar to the "3-Stage Phoredox" concept but including an oxidation ditch as the anoxic/aerobic reactor. A summary of the design loads and other plant parameters is provided, along with summary plant effluent data over a period of up to six years. The results show that these plants achieved excellent nutrient removal performance (geometric mean total N < 3 mgN/L and total P < 2 mgP/L achieved), through a combination of biological and simultaneous chemical removal using alum, despite the lack of filters on the secondary effluent. Effluent suspended solids were typically <3 mg/L and BOD5 < 4 mg/L. The capital cost for these plants was found to be below the average trend for BNR plants in Australia when compared on a similar basis (population equivalent and effluent quality), whilst the power input per unit organic load removed was in the upper quartile for a range of BNR plants.
Keyword Chemical Engineering
Fluid Flow
Transfer Processes
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
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Created: Wed, 11 Feb 2009, 15:09:31 EST by Joanne Mellor on behalf of Advanced Water Management Centre