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Pilot for remineralization of water

 Output characterisation
OUTPUT SENTENCE

Remineralization/neutralisation of drinking water through injection of lime milk suspension.

 
OUTPUT TYPEprototype 
WATER TOPICConsumption 
KEYWORDSlime milk suspension, water treatment, drinking water 
MARKET NEED TAILORED

End of neutralite exploitation in Britanny, implying extra costs in neutralization/remineralization, new solutions were needed in order to contain upkeep costs.

 
OUTPUT DESCRIPTION

This output is a prototype on a small scale drinking water plant (for 170 people), dedicated to remineralization and neutralisation of waters, for small local authorities not having a big budget.

 
STATE OF DEVELOPMENT

A 1 m3/h prototype has been successfully tested as a pilot, using recycled parts. A mobile unit is currently in development and construction with new parts, in order to test in real life conditions up to 10 m3/h.

 
INNOVATIVE ASPECTS AND ADVANTAGES

No extra costs linked to neutralite usage

Investment in the beginning is twice cheaper, compared to a classical neutralization/remineralization.

Micronized lime milk suspension wasn't tested before on small plants, and was usually injected at the beginning of the process, not at the end.

 
INTELLECTUAL/INDUSTRIAL PROPERTY RIGHTS

Office International de l'eau at the moment. Information should be made public at the end of 2014.

 
TRANSFERABILITY

Any small/medium drinking water plant  with acidic or soft properties for the treated water, up to 10 m3/h at most for financial reasons.

 
POTENTIAL USERS/CLIENTS

Any water utilities or local authorities managing their own plants

 
BUSINNESS CASEYes 
 Estimation of risks
INNOVATIVE DISADVANTAGE

Upkeep costs are rather high. The installation is twice cheaper considering investment costs, compared to classical remineralization units, but this advantage gets weared thin after 10-12 years of intensive use.

EVALUATION OF RISKS FOR OUTPUT USERS

Investment is low, upkeep costs can get out of hand if not watched carefully.

Filters for the particles of lime milk can be clogged occasionnally.

There are a few neutralisation processes already existing, but remineralization wasn't existing on small/medium drinking water plants.

ECONOMICAL RISKSNo risk on investment, low risk on running operations
TECHNICAL RISKSLow risk
MARKET RISKSLow risk
SOCIAL RISKSNo risk
 Steps ahead
NEXT STEPS TO ACHIEVE THE STATUS 'READY TO USE'

Pilot tests on real life conditions

INVOLVEMENT OF THE OWNER FOR THE NEXT STEPSResearch for potential users in order to run tests
TYPE OF PARTNER FOR THE NEXT DEVELOPMENTSSME for CO2 injection
TASKS TO BE PERFORMED

Completion of pilot unit

Tests of pilot unit in real life conditions

 Estimation of ressources
RESOURCES FOR NEXT STEPS

Financial support for tests on hands.

FORESEEN COSTS FOR NEXT STEPS

Up to 20 000 € for real life conditions tests on a small drinking water plant.

 Contact
TECHNICAL CONTACTOffice international de l'eau, Rémy Thalamy 
COUNTRYFRANCE 
WATER RTOM CONTACTOffice international de l'eau 
 Background
PROJECT NAMERemineralization of soft or agressive waters using micronized lime milk 
PROJECT ACRONYMLime Milk 
PROJECT DESCRIPTIONDevelopment of a pilot unit for treatment of soft or agressive waters, using micronized lime milk 
LEADEROffice International de l'Eau 
TEAMS INVOLVEDOffice International de l'Eau, SAUR, Veolia, Conseil général de la Creuse 
COUNTRIES INVOLVEDFrance 
PROJECT LOCATIONFrance 
FUNDING ORGANISATIONConseil général de la Creuse, SAUR, Veolia 

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