Isbn: 9781843397038 - evaluation of feasibility of methods to minimize biomass production from biotreatment. (26 risultati)

Perfeziona la tua ricerca

  • Libri (26)

a

Fascia di prezzo personalizzata (EUR)

a

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: PBShop.store UK, Fairford, GLOS, Regno UnitoPBShop.store UK

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 149,17

    EUR 5,92 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 9 disponibili

    PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

  • Lingua: Inglese

    Editore: Iwa Pub, 2004

    184339703X / 9781843397038

    • Brossura

    Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 153,75

    EUR 2,36 spedizione 
    Spedito in U.S.A.

    Quantità: 10 disponibili

    Condizione: New.

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 156,18

     Spedizione gratuita 
    Spedito in U.S.A.

    Quantità: 10 disponibili

    PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

  • Lingua: Inglese

    Editore: WERF 2004-08-31, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Chiron Media, Wallingford, Regno UnitoChiron Media

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 156,40

    EUR 7,66 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 9 disponibili

    Paperback. Condizione: New. Brand new book, sourced directly from publisher. Dispatch time is 24-48 hours from our warehouse. Book will be sent in robust, secure packaging to ensure it reaches you securely.

  • Lingua: Inglese

    Editore: Iwa Pub, 2004

    184339703X / 9781843397038

    • Brossura

    Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 149,16

    EUR 17,70 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 10 disponibili

    Condizione: New.

  • Lingua: Inglese

    Editore: Iwa Pub, 2004

    184339703X / 9781843397038

    • Brossura

    Da: GreatBookPrices, Columbia, MD, U.S.A.GreatBookPrices

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Usato - Come nuovo

    EUR 168,07

    EUR 2,36 spedizione 
    Spedito in U.S.A.

    Quantità: 10 disponibili

    Condizione: As New. Unread book in perfect condition.

  • Lingua: Inglese

    Editore: WERF, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Brook Bookstore On Demand, Napoli, NA, ItaliaBrook Bookstore On Demand

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 164,82

    EUR 6,80 spedizione 
    Spedito da Italia a U.S.A.

    Quantità: 9 disponibili

    Condizione: new.

  • Lingua: Inglese

    Editore: Iwa Pub, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Ria Christie Collections, Uxbridge, Regno UnitoRia Christie Collections

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 167,80

    EUR 13,32 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 9 disponibili

    Condizione: New. In English.

  • Lingua: Inglese

    Editore: Iwa Pub, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Speedyhen, Hertfordshire, Regno UnitoSpeedyhen

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 132,07

    EUR 48,37 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 9 disponibili

    Condizione: NEW.

  • Lingua: Inglese

    Editore: IWA Publishing, London, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Grand Eagle Retail, Bensenville, IL, U.S.A.Grand Eagle Retail

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 185,75

     Spedizione gratuita 
    Spedito in U.S.A.

    Quantità: 1 disponibile

    Paperback. Condizione: new. 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 multiple locations in the US or from the UK, depending on stock availability.…

  • Lingua: Inglese

    Editore: Iwa Pub, 2004

    184339703X / 9781843397038

    • Brossura

    Da: GreatBookPricesUK, Woodford Green, Regno UnitoGreatBookPricesUK

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Usato - Come nuovo

    EUR 168,73

    EUR 17,70 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 10 disponibili

    Condizione: As New. Unread book in perfect condition.

  • Lingua: Inglese

    Editore: IWA Publishing, GB, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Rarewaves USA, HEBRON, KY, U.S.A.Rarewaves USA

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 190,34

     Spedizione gratuita 
    Spedito in U.S.A.

    Quantità: 5 disponibili

    Paperback. Condizione: New. 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.…

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Majestic Books, Hounslow, Regno UnitoMajestic Books

    Venditore con 4 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 182,43

    EUR 7,67 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 3 disponibili

    Condizione: New. pp. 220 Illus.

  • Lingua: Inglese

    Editore: IWA Publishing, GB, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Rarewaves.com USA, London, LONDO, Regno UnitoRarewaves.com USA

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 193,01

     Spedizione gratuita 
    Spedito da Regno Unito a U.S.A.

    Quantità: 5 disponibili

    Paperback. Condizione: New. 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.…

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Kennys Bookshop and Art Galleries Ltd., Galway, GY, IrlandaKennys Bookshop and Art Galleries Ltd.

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 178,14

    EUR 9,50 spedizione 
    Spedito da Irlanda a U.S.A.

    Quantità: 9 disponibili

    Condizione: New. 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. Series: WERF Research Report Series. Num Pages: 265 pages, 1, black & white illustrations. BIC Classification: TQSR1. Category: (P) Professional & Vocational. Dimension: 272 x 210 x 15. Weight in Grams: 522. . 2004. Paperback. . . . .…

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: THE SAINT BOOKSTORE, Southport, Regno UnitoTHE SAINT BOOKSTORE

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 174,99

    EUR 19,02 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 10 disponibili

    Paperback. Condizione: New. New copy - Usually dispatched within 3 working days.

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Books Puddle, Woodside, NY, U.S.A.Books Puddle

    Venditore con 4 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 194,94

    EUR 3,56 spedizione 
    Spedito in U.S.A.

    Quantità: 3 disponibili

    Condizione: New. pp. 220.

  • Lingua: Inglese

    Editore: Intl Water Assn, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Revaluation Books, Exeter, Regno UnitoRevaluation Books

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 194,08

    EUR 11,80 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 2 disponibili

    Paperback. Condizione: Brand New. illustrated edition. 220 pages. 10.90x8.20x0.60 inches. In Stock.

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Biblios, frankfurt am main, HESSE, GermaniaBiblios

    Venditore con 4 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 202,89

    EUR 9,95 spedizione 
    Spedito da Germania a U.S.A.

    Quantità: 3 disponibili

    Condizione: New. pp. 220.

  • Lingua: Inglese

    Editore: Elsevier Science & Technology, 2004

    184339703X / 9781843397038

    • Brossura

    Da: moluna, Greven, Germaniamoluna

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 167,10

    EUR 48,99 spedizione 
    Spedito da Germania a U.S.A.

    Quantità: 5 disponibili

    Condizione: New. KlappentextrnrnThis 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 ev.

  • Lingua: Inglese

    Editore: IWA Publishing Jan 2004, 2004

    184339703X / 9781843397038

    • Brossura

    Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 183,42

    EUR 35,00 spedizione 
    Spedito da Germania a U.S.A.

    Quantità: 2 disponibili

    Taschenbuch. Condizione: Neu. Neuware - 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.…

  • Lingua: Inglese

    Editore: IWA Publishing, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Kennys Bookstore, Olney, MD, U.S.A.Kennys Bookstore

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 230,69

    EUR 9,37 spedizione 
    Spedito in U.S.A.

    Quantità: 9 disponibili

    Condizione: New. 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. Series: WERF Research Report Series. Num Pages: 265 pages, 1, black & white illustrations. BIC Classification: TQSR1. Category: (P) Professional & Vocational. Dimension: 272 x 210 x 15. Weight in Grams: 522. . 2004. Paperback. . . . . Books ship from the US and Ireland.…

  • Lingua: Inglese

    Editore: IWA Publishing, GB, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Rarewaves USA United, HEBRON, KY, U.S.A.Rarewaves USA United

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 197,15

    EUR 44,64 spedizione 
    Spedito in U.S.A.

    Quantità: 5 disponibili

    Paperback. Condizione: New. 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.…

  • Lingua: Inglese

    Editore: Elsevier Science & Technology, 2004

    184339703X / 9781843397038

    • Brossura

    Da: preigu, Osnabrück, Germaniapreigu

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 184,65

    EUR 70,00 spedizione 
    Spedito da Germania a U.S.A.

    Quantità: 1 disponibile

    Taschenbuch. Condizione: Neu. Evaluation of Feasibility of Methods to Minimize Biomass Production from Biotreatment | 00-CTS-10T | H. David Stensel (u. a.) | Taschenbuch | WERF Research Report Series | Kartoniert / Broschiert | Englisch | 2004 | Elsevier Science & Technology | EAN 9781843397038 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

  • Lingua: Inglese

    Editore: IWA Publishing, GB, 2004

    184339703X / 9781843397038

    • Brossura

    Da: Rarewaves.com UK, London, Regno UnitoRarewaves.com UK

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 188,37

    EUR 76,68 spedizione 
    Spedito da Regno Unito a U.S.A.

    Quantità: 5 disponibili

    Paperback. Condizione: New. 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.…

  • Lingua: Inglese

    Editore: IWA Publishing, London, 2004

    184339703X / 9781843397038

    • Brossura

    Da: AussieBookSeller, Truganina, VIC, AustraliaAussieBookSeller

    Venditore con 5 stelle
    Contatta il venditore

    Condizione: Nuovo

    EUR 269,41

    EUR 33,04 spedizione 
    Spedito da Australia a U.S.A.

    Quantità: 1 disponibile

    Paperback. Condizione: new. 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.…