20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
1 959 kr
I lager, skickas inom 4 till 5 vardagar
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
20% rabatt med Storytel
Du handlar alltid fysiska böcker till specialpriser om du har eller startar ett abonnemang.
Frakt från 0 kr
Snabb leverans med CityMail, Early Bird, Instabox, Budbee, PostNord eller DSV. Du ser alla fraktalternativ och priser i kassan.
Fria returer
Lämna tillbaka din bok kostnadsfritt med 14 dagars ångerrätt.
Utforska miljontals ljud- och e-böcker och upptäck stories i alla format. Med ett abonnemang får du 20% rabatt på fysiska böcker!
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.
1 959 kr
I lager, skickas inom 4 till 5 vardagar
Frank R. Spellman
Bodhisatta Hajra
Michael Gottlieb, Ralph Leighton, Richard Feynman
Delano Steenmeijer, Jens Bezemer, Joel Meter, Simon Phillipson, Ted Stryk
Vaclav Smil
Rupert Sheldrake
Joel Levy
Martin Peterson
Shin Takahashi
Construction Industry Training Board (CITB)
Andrew Dilnot, Michael Blastland
Richard Edmonds
Jakow Trachtenberg
Jim Bennett
Anthony Coulls
Jennifer Doudna, Samuel Sternberg
Harriet Rix
Ian Stewart
Noson S. Yanofsky
Daina Taimina
Richard Wrangham
Richard O. Prum
Sarah Easter Collins
Frida Skybäck
Liz Moore
Colleen Hoover
Kristin Fägerskjöld
Armando Lucas Correa
Sharon Bolton
Ruth Lillegraven
Santa Montefiore
Kelly Rimmer
Martha Hall Kelly
Svenja O'Donnell
Nathan Harris
Holly Jackson
Louise Boije af Gennäs
Tina Norin
Kristin Fägerskjöld
Pernilla Lindroos
Anna Lönnqvist
Jessie Burton
Malin Nordström
Marc Levy
Emma Donoghue
Snezana Lindskog, Andie Lindskog
Tony Samuelsson
Andrev Walden
Tina Harnesk
Kathrine Nedrejord
Anthony Doerr
Marieke Lucas Rijneveld
Lauren Groff
Claire Messud
Claire Lynch
Sebastian Barry
Ray Celestin
Simon Stranger
Alice Munro
Linda Boström Knausgård
Marit Kapla
Ulf Stark
Sarah Easter Collins
Liz Moore
Ursula Scavenius
Colleen Hoover
Michel Jean
