village of montpelier water treatment plant merged

8/14/2019 Village of Montpelier Water Treatment Plant Merged

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Village of Montpelier WaterVillage of Montpelier Water

Treatment PlantTreatment Plant

Making theMaking the WorldWorlds Best Tastings Best Tasting

WaterWater Even BetterEven Better


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Defining Our GoalsDefining Our Goals

Maintain High Quality and ReliabilityMaintain High Quality and Reliability

Solidify Existing Finished Water CapacitySolidify Existing Finished Water Capacity

Desired current capacity of 2 MGDDesired current capacity of 2 MGD

Plant Operations ConsiderationPlant Operations ConsiderationConsider Future Expansion CapabilitiesConsider Future Expansion Capabilities

Expansion capability to 4 MGDExpansion capability to 4 MGD


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Existing Raw Water SourceExisting Raw Water SourceEvaluating The Existing Raw Water SourceEvaluating The Existing Raw Water Source

Existing Well Field CapacityExisting Well Field CapacityHistorical Firm Capacity = 1.4 mgdHistorical Firm Capacity = 1.4 mgd

Limitations of Existing Well FieldLimitations of Existing Well Field

Minimum well isolation distancesMinimum well isolation distancesContamination potentialContamination potential

RecommendationRecommendation

Consider New Well Field SiteConsider New Well Field Site


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New Well Field ConsiderationsNew Well Field ConsiderationsEvaluation CompletedEvaluation Completed

Geology of the areaGeology of the areaFavorable conditions for wells yielding 1 MGDFavorable conditions for wells yielding 1 MGDcapacitycapacity

High water qualityHigh water quality

Best of Both Worlds (High Yield, Good Quality)Best of Both Worlds (High Yield, Good Quality)Land AvailabilityLand Availability

Ability to meet isolation distancesAbility to meet isolation distances

Proximity to treatment plantProximity to treatment plantPotential for aquifer contaminationPotential for aquifer contamination


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Existing Treatment PlantExisting Treatment PlantEvaluating The Existing Treatment PlantEvaluating The Existing Treatment PlantTreatment CapacityTreatment Capacity

Per 1940 standards, plant capacity was 1.5 MGDPer 1940 standards, plant capacity was 1.5 MGDPer present day standards, noticeably lessPer present day standards, noticeably less

Limitations of Existing FacilitiesLimitations of Existing FacilitiesTreatment processes generally undersizedTreatment processes generally undersized

Lack of redundancy for some processesLack of redundancy for some processes

Major renovations to existing structures requiredMajor renovations to existing structures required

Physical site limitationsPhysical site limitations

RecommendationRecommendationConsider New Water Treatment PlantConsider New Water Treatment Plant


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Decision to Proceed withDecision to Proceed with

Alternate Source and TreatmentAlternate Source and Treatment

What We Needed To DoWhat We Needed To Do

Site LocationSite Location

Preliminary Hydrogeologic WorkPreliminary Hydrogeologic Work

Confirm Capacity and QualityConfirm Capacity and QualityWater Characteristics and Treatment ProcessWater Characteristics and Treatment Process

SelectionSelection


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Major System ComponentsMajor System Components

Major System ComponentsMajor System Components

Raw Water WellsRaw Water Wells

Softening / Iron RemovalSoftening / Iron Removal

RecarbonationRecarbonation

FiltrationFiltrationDisinfectionDisinfection

Clear well StorageClear well Storage

High Service Pumps / Backwash PumpsHigh Service Pumps / Backwash Pumps


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Process Flow DiagramProcess Flow Diagram


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Raw Water WellRaw Water Well


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Softening & Recarbonation BasinsSoftening & Recarbonation Basins


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Cluster FiltersCluster Filters


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The Recipe For TheThe Recipe For TheWorldWorlds Best Tasting Waters Best Tasting Water


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Have A Dedicated Treatment Plant StaffHave A Dedicated Treatment Plant Staff

Blend The Water From One Of TheBlend The Water From One Of The

CountryCountrys Finest Aquifers With A Carefullys Finest Aquifers With A Carefully

Measured Portion Of Lime And Mix.Measured Portion Of Lime And Mix.Allow To SettleAllow To Settle

Transfer To Recarbonation Basin, Let SetTransfer To Recarbonation Basin, Let Set

Until StableUntil Stable

FilterFilter

Disinfect and Serve.Disinfect and Serve.


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To End Up With The WorldTo End Up With The Worlds Bests Best

Tasting Water, Your Source Must BeTasting Water, Your Source Must Be

Up To The ChallengeUp To The Challenge

The aquifer the village draws fromThe aquifer the village draws fromcontains what is most likely the finest watercontains what is most likely the finest water

in this part of the country.in this part of the country.

Average Alkalinity of 305 mg/LAverage Alkalinity of 305 mg/L

Average Harness of 308 mg/LAverage Harness of 308 mg/L

Iron Nominally 1.2 mg/LIron Nominally 1.2 mg/LTrace Amounts of SulfidesTrace Amounts of Sulfides


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OhioOhioss

AquifersAquifers

We AreWe AreHereHere

Unconsolidated andUnconsolidated andConfinedConfined

Lots of Sand andLots of Sand and

Gravel Between ClayGravel Between Clay

Above and BedrockAbove and Bedrock

BelowBelow


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The Treatment ProcessThe Treatment ProcessPrecipitative Lime SofteningPrecipitative Lime Softening

The TargetThe Target

ND59 ug/lManganese

ND1200 ug/lIron

120 ppm305 ppmTotal Alkalinity (as CaCO3)

122 ppm308 ppmTotal Hardness (as CaCO3)

WaterWater

FinishedRaw

AverageAverageParameter

Raw and Finished Water Quality

Montpelier, OH - Water Treatment Plant

Table 1


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Why Use Lime?Why Use Lime?

It takes up more space, it requires moreIt takes up more space, it requires more

equipment, the process requires moreequipment, the process requires more

attention.attention.

Lots of reasons not to.Lots of reasons not to.

Then Why?Then Why?


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The Treatment ProcessThe Treatment ProcessAesthetics!Aesthetics!

Lime accomplishes what needs to be doneLime accomplishes what needs to be donewithout replacing whatwithout replacing whats good for you withs good for you withsomething not so good.something not so good.

It leaves no unwelcome oxidation byproductsIt leaves no unwelcome oxidation byproductsbehind.behind.

It makes restoring the stability after treatmentIt makes restoring the stability after treatment

a simple process that does not require thea simple process that does not require theaddition of anything foreign.addition of anything foreign.


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Two EIMCO Clarifiers (aka. The Mixers)Two EIMCO Clarifiers (aka. The Mixers)

Their Not Voodoo, But It May Seem Like ItTheir Not Voodoo, But It May Seem Like It

Before You Get Them Figured Out.Before You Get Them Figured Out.


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The Treatment ProcessThe Treatment ProcessRecarbonationRecarbonation

Precipitative softening requires the elevationPrecipitative softening requires the elevationof the pH to a point where a portion of theof the pH to a point where a portion of thecalcium and magnesium compoundscalcium and magnesium compounds

remaining after treatment will require littleremaining after treatment will require littlecoaxing to come out of solution.coaxing to come out of solution.

Recarbonation allows the stability of the waterRecarbonation allows the stability of the waterto be restored and allows the staff to tweak theto be restored and allows the staff to tweak thestability indexes.stability indexes.


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The Treatment ProcessThe Treatment ProcessFiltration

Filtration isaccomplished with aset of cluster filters.

Some swear bythem, others atthem.

Overall, they are

well suited to theneeds here.


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The Treatment ProcessThe Treatment ProcessDisinfectionDisinfection

Gaseous Chlorine is disinfectant of choiceGaseous Chlorine is disinfectant of choice

It has safety issues when compared toIt has safety issues when compared to

hypochlorite.hypochlorite.

The primary advantage is the compactness ofThe primary advantage is the compactness of

storage.storage.

The primary disadvantage is its impact on theThe primary disadvantage is its impact on the

alkalinity and pH (Thatalkalinity and pH (Thats why we haves why we have recarbrecarb))


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The Treatment ProcessThe Treatment ProcessNow That You Know How We Make TheNow That You Know How We Make The

WorldWorlds Best Tasting Water, We Need As Best Tasting Water, We Need APlace To Keep It.Place To Keep It.

For That, WeFor That, Were Going To Hand It Over To:re Going To Hand It Over To:

NATGUNNATGUN

village of montpelier water treatment plant merged

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