Sewage Treatmentb14279a71a966e52ae36-fad5b9385501cb7f7cac4f09f1c56222.r14...Case Study Thousand...
Transcript of Sewage Treatmentb14279a71a966e52ae36-fad5b9385501cb7f7cac4f09f1c56222.r14...Case Study Thousand...
BiOWiSH™ Aqua Benefits• Reducessludgeproductionand
handling
• Increasesplantcapacitybyreducingcontacttime(capitalavoidance)
• Eliminatesodorousemissions
• Deliverssubstantialenergysavingsduetoreducedaeration
• Minimizesneedforchemicaladditives
• Stabilizesandimprovesplanttreatmentperformance
• Lowershydrogensulphide,ammoniaandnitratelevels
• Pre-treatsinfluentincollectionsystems
• 100%naturalandnon-toxic
Available sizes• 100g
• 1kg
Sewage Treatment
Case Study
Thousand Trails - Chesapeake Bay, USA
Innovative Technology Breaks Down Sludge and Removes Odors at RV Campsite Septic System
BackgroundLocatedinGloucester,VA,ThousandTrailsChesapeakeBayisanRVcampsiteandoutdoorpreservewithover350fullhookupsitesand25rentalcabins.Thesitealsohousesrecreationalandpublicfacilities,suchaslodges,aswimmingpool,publicrestroomsandadumpingstationforRVsewage.
RVsewersites,cabinsandpublicfacilitiesthroughoutthepropertydischargetoliftstationsthatpumptooneoftwoseparateseptictank/leachfieldsystems.Fourlocationswereselectedforthetrialofanewbiocatalysttechnologythatspeedsupbiochemicalreactionssignificantlyfasterthanunaidedprocessesorcurrenttechnologies.Thetechnologyhasbeenprovenasaneffectivewastewatertreatmentsolutionoverseas,includingAustralia,AsiaandEurope,andthetrialaimedtovalidatetheseresultsintheUnitedStates.Theparkwasclosedthroughoutthetrial-onlyafewsiteswereoccupiedbyemployeesandseasonaloccupants.
E Section Tank cluster - 113,000L sludge tank, 18,000L central tank and 56,000L effluent tank in series - discharging to a leach field in the background
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TheESectionseptictank/leachfieldsystemreceivesmostofthislow-flowvolume.Inaddition,thereisalowdailyinflowtotheonlyopenpublicrestroom,locatedinSectionB.AliftstationinSectionDthatdischargestotheESectiontankswasselectedfortrialduetoaconsistentproblemwithodor.TheseptictankdetailsareshowninTable1.
Table 1. Septic tank details and capacities
Tank ID Size Daily Input Receives wastewater from:
ESectionTanks Sludgetank
(113,000L)
<1,000gpd SectionsDandE,plusrentalcabins
Centraltank
(18,000L)
Effluenttank
56,000L)
Bbathroomtanks 5L <1,000gpd Publicrestroomonly
DSectionliftstation 2L <1,000gpd DSectionRVsites,plusrentalcabins
Priortothetrial,strongsepticodorsintheimmediatevicinityofDSectionliftstationwereobserved.Inaddition,visiblefloatingsludgeinESectionsludgetankandBSectionbathroomtankwasnoticed.BiOWiSHTechnologiesapproachedthecampsiteownerandoperatorwithaproposaltovalidatetheeffectivenessofthebiocatalystinreducingodorswithinthesite,aswellasreducingthestrengthofeffluentintheseptictanks.
Thebiocatalystcombinesproprietaryenzymes,cofactorsandnutrientstosignificantlyenhancedegradationratesfororganicwastes.Thisleadstosuperiorreductionsinodor,volatileorganiccompounds(VOC),biologicaloxygendemand(BOD),chemicaloxygendemand(COD),andoverallsolidwaste.Deliveredinactivemicrobialform,thetechnologyacceleratesthebreakdownoforganicwastesandodorousemissionsintoharmlessandodorlesscompounds,suchascarbondioxide,nitrogengasandwater.Itis100-percentnatural,non-toxicandsafeforeverydayuseinaverydiverserangeofconsumerandindustrialproducts.
Itsprovencapabilitieshelpsolveproblemsinenvironmentalwastemanagement(includingwastewater,solidwaste,soilandwaterremediation,industrialemissions),cropping,animalagricultureandaquaculture.
View inside sludge tank cover View inside the effluent tank View inside the cover of B section bathroom tank
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Objectives of the studyTwoprimaryobjectivesweredevelopedforthissite:
1.Toreducesolids,BODandnitratesintheseptic/leachfieldsystems
2.ToreduceodorattheDSectionliftstation
Inordertocharacterizethecauseoftheodors,pretreatedsampleswerecollectedattheeffluentsectionoftheESectiontankandanalyzedinthelaboratory.Theresultsoftheanalysis(allvaluesinmg/Lexceptturbidity,whichismeasuredinNTU)arepresentedinTable2.
Table 2. Effluent characteristics
BOD COD TKN TSS Turbidity
110 160 34 91 84
Deliveredinfreeze-driedpowder,thebiocatalystwasmixedwithwaterforreactivation.Eachdosewasprebatchedinfivegallon(18L)bucketsataconcentrationofone100gbagperbucket(seeTable3).ThebucketswerefiledwithwaterandincubatedindoorsabovelO0Covernight(uncovered).Thepre-batcheddoseswereappliedtotheESectiontankandtheDSectionliftstationdirectlyintothetanksthroughlids.TheBSectionbathhousetankdosewasappliedthroughthetoilet.ThedosesappliedtotheESectiontankweredoneintwobatchesonconsecutivedays,duetothehighpre-mixvolume(seeTable4).
Table 3. Detailed implementation plan
Location Initial shock doses (2)
ESectionsludgetank 1,200g
DSectionliftstation 300g
Bbathroomtank 300g
Table 4. Dosing schedule
Day Details
1 CollectedbaselinesamplefromEeffluenttank
2 AppliedfirstdosestoDliftstationandBbathroomtanks
3 Appliedbatch1orEtankdose(600g)
4 Appliedbatch2ofEtankdose(600g)
18 AppliedseconddosestoDliftstationandBbathroomtanks
19 Appliedbatch1ofsecondEtankdose(600g)
20 Appliedbatch2ofsecondEtankdose(600g)
34 CollectposttreatmentsamplefromEeffluenttank
Pre-batching tank doses in 5-gallon buckets
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Study outcomesAfteronly34days,MaintenanceSupervisorHughKeithreportedasignificantbreakupofthefattysludgeintheESectionsludgetank.HealsoreportedthattheodorattheDSectionliftstationwasnearlyeliminated.Analyticalresultsforposttreatmentsamples(seeFigure1),collectedonday34attheESectioneffluenttank(allvaluesinmg/Lexceptforturbidity,whichisinNTU)showedtheseoutcomes.
Byacceleratingthedigestionofwastethroughanenhancedenzymaticprocess,thenewtechnologyreducedthevolumeofactivatedsludgerequiredtotreataconstantloading.Asaresult,theequilbriumsludgeconcentrationwasreduced,andlesssludgebuildupshouldoccuroverthelongterm.Inaddition,byalteringthespeciationofenzymeswithinthesystem,theodorwasreduced.Odorreductionwasachievedbothbyalteringthebiotransformationpathwaysandbyenablingtheco-metabolismofodorouschemicalcompounds.Inlaymansterms,lessodorwascreatedinthefirstplace,andtheodorthatwascreatedwastheneatenbythebiocatalysts.Theentireresultwasachievedwithoutanycapitalinvestmentorotheralterationoftheproperty’sexistinginfrastructure.
Figure 1. Effluent sampling results, before and after implementation
Anticipated long-term outcomesItisanticipatedthatcontinuedmonthlydosingoftheseptictankswouldbreakupsolidsatthetopandbottomoftheliquidsineachtanktocontrolodorandminimizetheneedtopumpsludgefromthetanks.OdorintheDSectionliftstationcanbecontrolledwithconsistentdosingappliedasneededandinaccordancewithdailyflow,withmorefrequentapplicationsduringheavyuseperiods.Theseexpectedoutcomespresentsignificantcostsavingsofpotentiallythousandsofdollarsamonthforcampsiteowners,whichincludescostofsludgepumpouts,odor-maskingagentsandleachfieldremediationservices.Inaddition,thereductionofnutrientlevelsintreatedwastewaterprovidesasignificantenvironmentalbenefitasthecampsiteislocatedinChesapeakeBayBasincatchmentarea.
ContactsBiOWiSH Technologies
Email:[email protected]
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