Evaluation of Feasibility of Methods to Minimize Biomass Production from Biotreatment (Paperback)

Langue : anglais

Edité par IWA Publishing, London, 2004

184339703X / 9781843397038

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Paperback. This report presents the results of an evaluation of technologies that may result in less biomass production in activated sludge processes. The report summarizes the results of a comprehensive literature review that was done to evaluate technologies in terms of their sludge reduction potential, ease of implementation, impacts on plant operations and effluent quality, reliability, and relative capital and operating costs. Reporting testing results supported significant biomass reduction by processes using chemical and thermal methods, higher life forms (predator processes), anaerobic instead of aerobic respiration, and extreme solids retention times, but biomass reduction for enhanced biological phosphorus removal (EBPR) processes and a mechanical disintegration process were less conclusive. The predator enhancement process showed promise for industrial wastewater treatment, but is less attractive for municipal wastewater treatment for which a lower soluble COD fraction is present. Extreme solids retention time processes may be practical for small wastewater flows and perhaps with the use of membrane separation technology. Anaerobic treatment processes are known to have a lower biomass yield (one fourth or a less than for aerobic treatment), but work is needed to develop their applications for low strength, low temperature wastewaters, such as in municipal wastewater treatment. For some processes such as the cell disruption using mechanical, thermal, and chemical means, the cost of implementing the biomass reduction technology was greater than the cost savings associated with less sludge production. Addition of chemical uncouplers can greatly reduce biomass production, but pose problems of toxic chemicals in the treated effluent. In a series of bench-scale tests carried out at the Seattle West Point wastewater treatment facility and the University of Washington environmental engineering laboratories the presence and mechanism of COD loss (and subsequent less biomass production) in the anaerobic zone of EBPR processes was investigated. The results of the test work and fundamental evaluation could not support previous claims of a COD loss in EBPR processes, nor was less sludge production observed. In a series of bench-scale tests carried out at the Seattle West Point wastewater treatment facility and the University of Washington environmental engineering laboratories the presence and mechanism of COD loss (and subsequent less biomass production) in the anaerobic zone of EBPR processes was investigated. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.

N° de réf. du vendeur 9781843397038

Titre
Evaluation of Feasibility of Methods to Minimize Biomass Production from Biotreatment (Paperback)
Auteur
H.David Stensel
Éditeur
IWA Publishing, London
Année de publication
2004
État de l'article
new
Reliure
Paperback
Langue
anglais
ISBN à 10 chiffres
184339703X
ISBN à 13 chiffres
9781843397038

AussieBookSeller

Truganina, VIC, Australie

Vendeur avec une évaluation de 5 étoiles

Vendeur AbeBooks depuis 22 juin 2007

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Article25 à 45 jours ouvrés8 à 14 jours ouvrés
Premier articleEUR 31,92EUR 37,95
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