Recirculating Aquaculture System
VR
  • Products Details

Zhongshan eWater Aquaculture Equipment Technology Limited is capable of providing a quality range of RAS Snakehead Murrrel Fish Farming Recirculating Aquaculture System in Vietnam. The Other Aquaculture Equipment product will supply to all over the world, such as Europe, America, Australia,Uganda , Oman ,Sri Lanka , Surabaya . In the future,RAS Snakehead Murrrel Fish Farming Recirculating Aquaculture System in Vietnam will increase more capital and technology investment to continuously improve the comprehensive competitiveness of the enterprise, and strive to remain invincible in the market forever.

Place of Origin:Guangdong, ChinaBrand Name:eWater
Model Number:EW-RAS-200Product name:Circular Fish Farm with Tanks for Commercial Fish Farm
Water Volume:60m3/100m3/200m3/300m3 and moreFish Species:Tilapia/Catfish/Sturgeon/Shrimp/Seabass and more
Water:Fresh water or salt waterApplication:Indoor Fish Farming water treatment
Main Equipment:Drum Filter/Protein Skimmer/Biofilter/Degassing and moreCustomize Available:Solution for all kinds of fish species and capacity
Factory Visit:AvailableUse:Indoor Aquaculture Fish Farming


RASDescription
RecirculatingaquaculturesystemRASareusedinhomeaquariaandforfishproductionwherewaterexchangeislimitedandtheuseofbiofiltrationisrequiredtoreduceammoniatoxicity.Othertypesoffiltrationandenvironmentalcontrolareoftenalsonecessarytomaintaincleanwaterandprovideasuitablehabitatforfish.ThemainbenefitofRASistheabilitytoreducetheneedforfresh,cleanwaterwhilestillmaintainingahealthyenvironmentforfish.RAShavehighfishstockingdensitiesandcanbeoperatedeconomicallycommercial.AlloureWaterresearchersarecurrentlyconductingstudiesinRASandwehavemanysuccessfulindoorfishfarmingprojectsallovertheworld.

MaineWaterRASprocessesandtheequipmentnecessaryAseriesoftreatmentprocessesisutilizedtomaintainwaterqualityinintensivefishfarmingoperations.Thesestepsareoftendoneinorderorsometimesintandem.Afterleavingthevesselholdingfishthewaterisfirsttreatedforsolidsbeforeenteringabiofiltertoconvertammonia,nextdegassingandoxygenationoccur,oftenfollowedbyheating/coolingandsterilization.Eachoftheseprocessescanbecompletedbyusingavarietyofdifferentmethodsandequipment,butregardlessallmusttakeplacetoensureahealthyenvironmentthatmaximizesfishgrowthandhealth. 

ProcessEquipmentnecessaryBiolfiltrationdenitrifyingbiofilter,MBBRprocessSolidsremovaldrumfilter,sandfilter,proteinskimmerReoxgenatingoxygenconeorlowpressureoxygenatingdevicePHcontroldegassingdeviceTemperaturecontrolsubmergedheaters,heatpumps,chillers,andheatexchangersBiosecurityUVsterilizer,ozonegenerator
Biofiltration
AllRASreliesonbiofiltrationtoconvertammonia(NH4+andNH3)excretedbythefishintonitrate.Nitrifyingbacteriaarechemoautotrophsthatconvertammoniaintonitritethennitrate.Abiofilterprovidesasubstrateforthebacterialcommunity,whichresultsinthickbiofilmgrowingwithinthefilter.Waterispumpedthroughthefilter,andammoniaisutilizedbythebacteriaforenergy.Nitrateislesstoxicthanammonia(>100mg/L),andcanberemovedbyadenitrifyingbiofilterorbywaterreplacement.
SolidsRemovalInadditiontotreatingtheliquidwasteexcretedbyfishthesolidwastemustalsobetreated,thisisdonebyconcentratingandflushingthesolidsoutofthesystem.Removingsolidsreducesbacteriagrowth,oxygendemand,andtheproliferationofdisease.TypicalRASsolidsremovalinvolvesasandfilterorparticlefilter.AnothercommonmethodistheuseofamechanicaldrumfilterInordertoremoveextremelyfineparticlesorcolloidalsolidsaproteinfractionatormaybeusedwithorwithouttheadditionofozone(O3).
PHControl
InallRASpHmustbecarefullymonitoredandcontrolled.ThefirststepofnitrificationinthebiofilterconsumesalkalinityandlowersthepHofthesystem.KeepingthepHinasuitablerangeiscrucialtomaintainthehealthofboththefishandbiofilter.pHistypicallycontrolledbytheadditionofalkalinityintheformoflime(CaCO3)orsodiumhydroxide(NaOH).pHcanalsobecontrolledbydegassingCO2inapackedcolumnorwithanaerator,thisisnecessaryinintensivesystemsespeciallywhereoxygenationinsteadofaerationisusedintankstomaintainO2levels.
TemperatureControlAllfishspecieshaveapreferredtemperatureaboveandbelowwhichthatfishwillexperiencenegativehealtheffectsandeventuallydeath.Temperaturealsoplaysanimportantroleindissolvedoxygen(DO)concentrations,withhigherwatertemperatureshavinglowervaluesforDOsaturation.Temperatureiscontrolledthroughtheuseofsubmergedheaters,heatpumps,chillers,andheatexchangers.[13]Allfourmaybeusedtokeepasystemoperatingattheoptimaltemperatureformaximizingfishproduction.
Biosecurity
DiseaseoutbreaksoccurmorereadilywhendealingwiththehighfishstockingdensitiestypicallyemployedinintensiveRAS.Outbreakscanbereducedbyoperatingmultipleindependentsystemswiththesamebuildingandisolatingwatertowatercontactbetweensystemsbycleaningequipmentandpersonnelthatmovebetweensystems.AlsotheuseofaUltraViolet(UV)orozonewatertreatmentsystemreducesthenumberoffreefloatingvirusandbacteriainthesystemwater.Thesetreatmentsystemsreducethediseaseloadingthatoccursonstressedfishandthusreducethechanceofanoutbreak.

DetailsImages
RASApplicationApplicationsTheRASisahighdensityindooraquaculturesystemandthefishspeciesofeWaterRASsuccessfulapplicationsincludingtheMandarinfish,Spottedbass,TurbotFish,Lobster,Vannamei,Kinggrouper,Tilapiaandsoon.


SuccessfulCases

Bagda(TigerShrimp)

●CulturingCycleTime:90Dto55-65gramssizeforharvesting

●Biomass:10kilograms/m3atharvesting 
●Temp:20–30℃,26–30℃preferred

Shing(StingingCatfish)HeteropneustesFossilis●CulturingCycleTime:140-160Dto65-80gramssizeforharvesting
●Biomass:80kilograms/m3atharvesting
●Temp:20–30℃,23–28℃preferred

Kio(ClimbingPerch)●CulturingCycleTime:150Dto250gramssizefor 

harvesting
●Biomass:100kilograms/m3atharvesting
●Temp:25-30℃

AnguillaAnguilla●CulturingCycleTime:150Dto150gramssizefrom

50-gramfingerlings

●Biomass:60kilograms/m3atharvesting
●Temp:26-30℃

RASusedtogrowPabdainBangladeshFarmingcycletime:120days(fingerlingsto80gramsfor
harvesting)
Biomass(stockdensity):80kg/m³
RASwatervolume:285m³
RASwaterflow:240m³/hour

RASusedtogrowTilapiainJordanThreetanksforgrow-outandonetankforharvesting
Watervolume:1182m³
12smalltanksforfingerlingsnursery,eachtank36m³
Biomass(stockdensity)atharvesting:100kg/m³
RASwaterflow:1000m³/hour

AbouteWater
Companyprofile
ZhongshaneWaterAquacultureEquipmentTechnologyLimitedisaprofessionalcompanyengagedindesign,productionandsalesofRecirculatingAquacultureSystemaswellasaquacultureequipment.Ewaterisfocusedonthedevelopmentandmanufacturingofindustrialrecirculatingaquaculturesystemsolutions,anditsproductdesignandproduction,includingdrumfilters,proteinskimmers,biologicalfilters,aerationequipment,disinfectionequipment,heatpumpsandwaterqualitymonitorequipment.


Weworkwithtop-levelaquacultureresearchinstitutesandexpertstodevelopbestsolutionsforourcustomers inaquacultrureindustry.OurengineeringteamiscommittedtodevelopbestpracticesforeachequipmentandRASbasedoncustomers'needs.Wecontinuetobereliableandhonestinwhatwedoandhowweact.

Our missionistoimprovesustainabilityandprofitabilityforcustomers,andbeavaluablepartnerforcustomers'long-termbusiness.

Certifications
ExhibitionExhibitioninNanningCityGuangxiProvince,ChinaExhibitioninZhanjiangCityGuangdongProvince,ChinaInstallationServices
Wealsoprovideon-siteinstallationservicesforourcustomers.

GreatServiceisOurMisson!

1. Warranty:12monthssincetheshippingdate,freemaintenanceprovided.Costofthesparepartsshouldbepaidbeyondthewarranty.Thefollowingconditionsarenotcoveredbythewarranty.
a)Damagedduetoaccidentormisuse.
b)Damagedbyunauthorizeddismantlingorrepairingwithoutpermission.
c)Appearancedamage
d)Replacethesparepartswiththeunauthorizedones
2. Formorespareparts(ozonetube,solenoidvalve,aircompressor,PCB)oranyotherneedsforafter-salesservicepleasecontactusviaemailorphone.


UzbekistanCarpHatcheryRASsystemproject

BangladeshShingGrow-outRASsystemproject


CustomerPhotosYouarewelcometovisitourfactory.
RecommendProducts
Basic Information
  • Year Established
    --
  • Business Type
    --
  • Country / Region
    --
  • Main Industry
    --
  • Main Products
    --
  • Enterprise Legal Person
    --
  • Total Employees
    --
  • Annual Output Value
    --
  • Export Market
    --
  • Cooperated Customers
    --

Recommended

Send your inquiry

Get in touch 

Our mission is to improve sustainability and profitability for customers, and be a valuable partner for customers’ long-term business.

Recommended
They are all manufactured according to the strictest international standards. Our products have received favor from both domestic and foreign markets.
They are now widely exporting to 200 countries.

Send your inquiry

Choose a different language
Current language:English