Blow-down

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== WHO-Definition ==
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== Terms & Synonyms ==
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== Official WHO Definition ==
Removing some of the water of a system periodically or continuously, and replacing it with fresh water, to control the continuous accumulation of dissolved solids in the water (WHO 2006).See Bleed-off
Removing some of the water of a system periodically or continuously, and replacing it with fresh water, to control the continuous accumulation of dissolved solids in the water (WHO 2006).See Bleed-off
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=== Explanation ===
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== Other Definitions ==
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== <!-- IGNORE THIS --> ==
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{{GlossaryRelated}}
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__TABLESEC__
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__TOC__
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== Interpretations and Explanations ==
This process of blow-down may be controlled by a conductivity controller that detects the increase in conductivity due to the dissolved solids, and automatically regulates the rate to hold a preset conductivity by triggering the operation of a solenoid drain valve.Blow-down may be activated immediately before the addition of the biocide, to ensure that the amount of suspended dirt in the water that might react with and neutralize the biocide is minimized. Blow-down may then be stopped for a period after the addition of the biocide, to ensure that the chemical is retained at a sufficient concentration for long enough to be effective. (WHO 2006)
This process of blow-down may be controlled by a conductivity controller that detects the increase in conductivity due to the dissolved solids, and automatically regulates the rate to hold a preset conductivity by triggering the operation of a solenoid drain valve.Blow-down may be activated immediately before the addition of the biocide, to ensure that the amount of suspended dirt in the water that might react with and neutralize the biocide is minimized. Blow-down may then be stopped for a period after the addition of the biocide, to ensure that the chemical is retained at a sufficient concentration for long enough to be effective. (WHO 2006)
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=== References and Links ===
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== References ==
[[WHO (2006) Legionella and the prevention of legionellosis]]
[[WHO (2006) Legionella and the prevention of legionellosis]]
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'''[http://www.who.int/thelexicon/entry.php?list&langue1=en&langue2=fr&langue3=es&langue4=ru&langue5=de&langue6=zh&orderby=term_en&submit=Search&searchfilter=all&methode=contient&term=Blow-down WHO Lexicon page] (translations and examples)'''
'''[http://www.who.int/thelexicon/entry.php?list&langue1=en&langue2=fr&langue3=es&langue4=ru&langue5=de&langue6=zh&orderby=term_en&submit=Search&searchfilter=all&methode=contient&term=Blow-down WHO Lexicon page] (translations and examples)'''
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== Other Definitions ==
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<references/>
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== References ==
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== See also ==
== See also ==
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[[Blow-down]]
 
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{{Glossary_related}}
{{Glossary_related}}
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== External Resources ==  
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== External Resources ==
[[Category:Glossary]][[Category:WHO_Lexicon]]
[[Category:Glossary]][[Category:WHO_Lexicon]]
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== Attachments ==
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<layout name="Glossary" />
<layout name="Glossary" />

Current revision

Terms & Synonyms

Official WHO Definition

Removing some of the water of a system periodically or continuously, and replacing it with fresh water, to control the continuous accumulation of dissolved solids in the water (WHO 2006).See Bleed-off

Other Definitions

Contents

Interpretations and Explanations

This process of blow-down may be controlled by a conductivity controller that detects the increase in conductivity due to the dissolved solids, and automatically regulates the rate to hold a preset conductivity by triggering the operation of a solenoid drain valve.Blow-down may be activated immediately before the addition of the biocide, to ensure that the amount of suspended dirt in the water that might react with and neutralize the biocide is minimized. Blow-down may then be stopped for a period after the addition of the biocide, to ensure that the chemical is retained at a sufficient concentration for long enough to be effective. (WHO 2006)

References

WHO (2006) Legionella and the prevention of legionellosis


WHO Lexicon page (translations and examples)


See also

External Resources

Attachments

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