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  • BSI
    BS ISO 21939-1:2019 A method to calculate and express energy consumption of industrial wastewater treatment for the purpose of water reuse - Biological processes
    Edition: 2019
    $316.70
    / user per year

Description of BS ISO 21939-1:2019 2019

This document sets out the general principles for, and provides guidance on, the quantitative characterization of the energy consumed by industrial biological wastewater treatment systems. It does not aim to characterize the treatment pollutants removal performance or process reliability or any other consideration in the selection of a wastewater treatment system.

This document includes the following sub-systems of biological treatment system:

  • Biological reactors, which might be suspended growth or fixed film processes or a combination thereof, and can include anaerobic, anoxic and/or aerobic tanks and/or zones.

  • Solid-liquid separation processes such as sedimentation, flotation, or membrane filtration, used for clarification of the water before discharge to downstream processes, which can also involve the return of a the separated solids as sludge back to the biological reactor.

  • Any pumps, blowers and mixers for water circulation, mixing and air supply in and between the sub-systems listed herein.

  • Heating or cooling of the water for treatment.

This document does not include the following subsystems of the biological treatment system:

  • Wastewater feed pumps.

  • Pre-treatment systems, which for the purposes of this document also include preliminary and primary treatment processes, such as but not limited to, screening, sedimentation, dissolved air flotation, chemical oxidation, oil separation.

  • Post-treatment processes, such as but not limited to, disinfection, desalination, ion exchange, sludge treatment and handling systems.

  • Site lighting or any energy consumption involved in office operation.

  • Energy recovery from processes such as anaerobic reactors producing biogas.

Filtration processes, which are sometimes part of the biological treatment process and at other times part of the post treatment, are referred to separately within this document.



Standard NumberBS ISO 21939-1:2019
TitleA method to calculate and express energy consumption of industrial wastewater treatment for the purpose of water reuse - Biological processes
StatusDefinitive
Publication Date2019-06-06
Identical National Standard OfISO 21939-1
DescriptorsMethods of calculation, Components, Energy consumption, Water treatment, Wastes
ICS13.060.30 Sewage water, 13.060.01 Water quality in general
CommitteeB/505/50
ISBN978 0 580 96739 9
PublisherBSI
Pages22

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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