EMERGENCY SUPPLEMENTAL WATER SUPPLY ......EMERGENCY SUPPLEMENTAL WATER SUPPLY DEVELOPMENT USING...
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EMERGENCY SUPPLEMENTAL WATER SUPPLY DEVELOPMENT USING DESALINATION OF BRACKISH WATER Page 1 of 5 NEW MEXICO DESALINATION ASSOCIATION PREPARED BY: Deborah Dixon and Mike Hightower June 2018 1. New Mexico regulatory requirements: a. Source water: Brackish Water Rules in NM per Office of State Engineer (OSE) i. ess than 1,000 mg/L total dissolved solids (TDS), essentially salts, or above 2,500 feet below ground surface: normal water permit applications and jurisdiction apply. Water rights are assigned for beneficial use. ii. Greater than 1,000 mg/L TDS, and below 2,500 feet below ground surface: a permit is required, but no beneficial use assignment is needed. iii. Additionally, no impairment of fresh water may occur by extraction of the brackish water for either source category. b. Finished water: Desalination Treatment – NM Environment Department (NMED) Drinking Water Bureau (DWB) i. Potable drinking water use requires a permit (not required for agricultural use) 1. Standards for drinking water quality must adhere to the National Primary Drinking Water Regulations, essentially less than 1,000 mg/L TDS. 2. Any modification to existing public water supply system must obtain written approval from the NMED-DWB before they undertake a public water system project (20.7.10.200.A, 20.7.10.201.A NMAC). 3. The project may not be put into operation until approval has been given by the DWB. 4. Projects covered by the construction application shall be sampled for organic and inorganic & radiological contaminants and if water source is a new ground water source that is not under the direct influence of surface water, application must include an inventory of existing and planned facilities and land uses that are actual or potential sources of contaminants of concern located within 1,000 feet of a water source. 5. Projects that incorporate Best Available Technologies (BATs) will be reviewed within 45 days. Projects that use treatment other than a BAT will be reviewed within 120 days. Also, applications for these types of projects must include a performance demonstration (pilot test) that was completed by a field testing organization with the credentials stated in the regulations. ii. Costs 1. Drilling and equipment to pump deep well water are high 2. For long term use, can requires stainless steel drill pipe due to often corrosive water quality characteristics of brackish water
Transcript of EMERGENCY SUPPLEMENTAL WATER SUPPLY ......EMERGENCY SUPPLEMENTAL WATER SUPPLY DEVELOPMENT USING...
EMERGENCY SUPPLEMENTAL WATER SUPPLY DEVELOPMENT USING DESALINATION OF BRACKISH WATER
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NEWMEXICODESALINATIONASSOCIATION
PREPAREDBY:DeborahDixonandMikeHightower
June2018
1. NewMexicoregulatoryrequirements:a. Sourcewater:BrackishWaterRulesinNMperOfficeofStateEngineer(OSE)
i. essthan1,000mg/Ltotaldissolvedsolids(TDS),essentiallysalts,orabove2,500feetbelowgroundsurface:normalwaterpermitapplicationsandjurisdictionapply.Waterrightsareassignedforbeneficialuse.
ii. Greaterthan1,000mg/LTDS,andbelow2,500feetbelowgroundsurface:apermitisrequired,butnobeneficialuseassignmentisneeded.
iii. Additionally,noimpairmentoffreshwatermayoccurbyextractionofthebrackishwaterforeithersourcecategory.
b. Finishedwater:DesalinationTreatment–NMEnvironmentDepartment(NMED)DrinkingWaterBureau(DWB)
i. Potabledrinkingwateruserequiresapermit(notrequiredforagriculturaluse)
1. StandardsfordrinkingwaterqualitymustadheretotheNationalPrimaryDrinkingWaterRegulations,essentiallylessthan1,000mg/LTDS.
2. AnymodificationtoexistingpublicwatersupplysystemmustobtainwrittenapprovalfromtheNMED-DWBbeforetheyundertakeapublicwatersystemproject(20.7.10.200.A,20.7.10.201.ANMAC).
3. TheprojectmaynotbeputintooperationuntilapprovalhasbeengivenbytheDWB.
4. Projectscoveredbytheconstructionapplicationshallbesampledfororganicandinorganic&radiologicalcontaminantsandifwatersourceis anewgroundwatersourcethatisnotunderthedirectinfluenceofsurfacewater,applicationmustincludeaninventoryofexistingandplannedfacilitiesandlandusesthatareactualorpotentialsourcesofcontaminantsofconcernlocatedwithin1,000feetofawatersource.
5. ProjectsthatincorporateBestAvailableTechnologies(BATs)willbereviewedwithin45days.ProjectsthatusetreatmentotherthanaBATwillbereviewedwithin120days.Also,applicationsforthesetypesofprojectsmustincludeaperformancedemonstration(pilottest)thatwascompletedbyafieldtestingorganizationwiththecredentialsstatedintheregulations.
ii. Costs
1. Drillingandequipmenttopumpdeepwellwaterarehigh
2. Forlongtermuse,canrequiresstainlesssteeldrillpipeduetooftencorrosivewaterqualitycharacteristicsofbrackishwater
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iii. Ifintegratingintoexistingwatersupplysystem–mustaccountforcompatibilityofwaterqualityconstituentsbetweenexistingwatersupplysourceandtreatedbrackishwatertoavoidnegativereactionsindeliverysystem
c. Wasteconcentratedisposal:(oftenconsideredindustrialwaste)–RequiresNMEDSurfaceand/orGroundWaterBureaupermits
i. TheNMEDGroundWaterPollutionPreventionSection(GWPPS)reviewsandapprovesgroundwaterDischargePermitsfordischargesthathavethepotentialtoimpactgroundwaterqualitypursuanttoSubpartsIIIandVoftheWaterQualityControlCommission(WQCC)regulations(20.6.2NMAC).
ii. Dischargeofconcentratewastestreamoptionsinclude:
1. Injectionwell–requiresNMOSEapproval
2. Sanitarysewer–couldimpactexistingNMEDWasteWaterTreatmentPlant(WWTP)dischargepermit
3. Evaporationpond(s)–requiresNMGWBdischargepermit-easiesttoapprovebutcouldcostupto$250,000persurfaceacreofstoragecapacity
4. Concentrateresourcerecovery–recyclesaltsforbeneficialuse,currentBATsuggestsplantsizesexceeding6milliongallonsofbrackishwateradaybetreated,whichisnotofascaleusedforemergencywatersupplies.
2. Opportunitiestoacceleratepermitapprovalprocess
i. Sourcewater:mostchallengingtoaccelerate;currentprocessrequires:
• Proofoflandownership
• Publicadvertisement,
• Permittedquantity-restrictsquantityofwaterabletobelegallyextracteachyear
• Hydrologeologicevaluationtodemonstratenoimpairmenttootherfreshwatersources-oftensubjecttoprotests
ii. Finishedwater:
1. discusswithNMEDtheapplicationoftreatedwatertoestablishwaterqualityneeds;
2. processcouldbestraightforwardifnotconnectingtoexistingwatersystem–i.e.usedtoprovideemergencydrinkingwaterusingtanktrucks,watertrailers,etc.
iii. Wasteconcentratedisposal:
1. Avoidinjectionanddisposalinexistingsanitarysewer
2. Collectandtruckconcentratetonearbyapproved/largecapacityWWTPfacility,existingpermittedevaporationpond,i.e.powerplant,miningoperation,etc.orexistingbrackishwaterdisposalwell
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3. ChallengesandPossibleSolutions
i. “Onesize”doesnotfitallw.r.t.waterqualityofbrackishsourcewater
Solution-characterizebrackishwatersourcesinNMandcategorizethosewhicharesimilar–thendefineBATtreatmentapproachesforeachcategorytominimize(oreliminate)needformanyindividualpilottests.ThiscouldbedoneincooperationwiththeBureauofReclamationBrackishGroundwaterNationalDesalinationResearchFacilityinAlamogordo.
ii. Integrationofnewwatersourcewithexistinginfrastructureofmunicipalwatersystemcancreatenegativechemicalreactions
Solution-onlyprovidetemporary“bottlefilling”siteinsteadofconnectingtoexistinginfrastructure
iii. Funding
Solutions-securegrantsinadvance+pre-payforequipment,pre-negotiateleasingcostswithsuppliers,drillbrackishwellsinadvance,orutilizeexistingwellsthathavebecomebrackishanduseportabledesalinationequipment
iv. Disposalofby-productconcentrate
Solutions-utilizeevaporationponds(aremosteasilyapprovedalthoughcanbeexpensive),oruseinexpensiveplasticholdingtankstostoreconcentrateandhaulofftoappropriatefacility
v. NMEDpermittinglikelyeasiertoexpeditethanOSEpermitprocessduetoproofofnoimpairmentstipulation
Solutions-pre-negotiateexpeditedapprovalprocesswithNMED,passastatutesimilartoemergencywelldrillingpermitwhichallowsimplementationpriortohydrogeologicevaluationandapproval
4. Ideally,incorporatelong-termwatersupplyresiliencyplanningforcommunitiesinNMthatarepotentiallyorchronicallyvulnerabletowatersupplyshortages–suchasLasVegas,SantaFe,SoutheasternNM,ClovisandPortales,HatchValley,WesternNM,andNortheasternNM.
ThiscouldincludethepurchaseorleasebytheStateofportabledesalinationequipment,waterstorage,andconcentratestorageequipmentthatcouldbeusedinemergencies.
Thiscouldalsoincludepre-leasingofportabledesalinationequipmentorofmobiledesalinationsystemsthathavebeenpretestedondifferenttypesofNMbrackishwatertoestablishproductionflowrequirementsandoperationalcriteriatomeetNMwaterqualityregulations.
Someexamplesofthedifferentmobileandportabledesalinationequipmentavailableandwaterstoragetanksareprovidedinthefiguresandtablesthatfollowonthenextcoupleofpages.
Foratypicalbrackishgroundwaterdesalinationsystem,asystemtreating10,000gallonsperdayofrawwaterwouldcreateabout8,000gallonsperdayoffinishedwaterforacommunityandcreateabput2,000gallonsperdayofconcentrate.Duringanemergencythiscouldprovideasmuchas5gallonsperdayoffreshwatertoover1500people.
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US WATER 20,000 GPD COMMERCIAL REVERSE
OSMOSIS SYSTEM AR-7-20000
$28,000
500 GPD PLANT, FULLY TRANSPORTABLE, SURFACE WATER FEED AND DISCHARGE
VEOLIA 100,000 GPD PORTABLE, SELF-CONTAINED, DESALINATION SYSTEM ON 18-WHEELER
EMERGENCY SUPPLEMENTAL WATER SUPPLY DEVELOPMENT USING DESALINATION OF BRACKISH WATER
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AMPAC, 100,000 GPD TRANSPORTABLE
DESALINATION SYSTEM. INCLUDES DESAL AND
GENERATOR CONTAINERS. A LARGE PORTABLE
DESALINATION PLANT WOULD INCLUDE RAW
WATER HOLDING TANKS, TREATED WATER HOLDING TANKS, AN CONCENTRATE
HOLDING TANKS.
Raw, Finished, and Desalination Concentrate Storage Tanks Size and Prices June 2018
Vertical Plastic Water Tanks
Capacity (gallons)
Dimensions (feet) Ship From Tank Cost
($)
2500 8x7 CA, TX 1300
5000 8x10 UT, CA, TX 2500
8000 12x12 TX 5000
10,000 12x14 CA, TX 5500
13,000 12x16 AL 11,000
15,000 12x18 TX 16,000
Horizontal Plastic Water Tanks
Capacity (gallons)
Dimensions (feet) Ship From Tank Cost
($)
2500 6 ft dia. ND 4300
3500 6 ft dia. ND 7000
4500 7 ft dia. ND 7000
