Intensive fish farming plantssystem STÄHLERMATIC®

EXPERIENCE

PROGRESS

QUALITY

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INTRODUCTION Therefore investments inaquaculture are very profitable, Thedevelopment has two priorities:The aquaculture is a branche

expension worldwide. The dermandfor f1shes exceed the supply - producnon of delicatessen with a

high marketing value,

30~----~----~------~----~- production of food protein for thepopulation of countriss withinsufficient nutrition.

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Prod ctionper y ar20~-- __ ~ ~ ~ ~

The vital element of the aquacultureis the water. For example theeuro pe an industrial countries have avery strained water supply with1000 cbm each head and year. Thedecreased ressources of fresh waterresults in rising difficulties for thecommercial aquacultures: Besidesthis they are natural prejudiced byrising pollution of the water,spreading of fish illnesses and by

2000 unfavourable climatic effects:

10~-----+------~__---r----~5

1960 1970 19901980

Development of aquaculture

Tilapia: Highest properties of quality and production

STÄHLERMATIC biostage fortreatment of production waste

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breeding plant

temperature control

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circuit pump stationoxygen supply

•• ®STARLERMATIC Aquaculturewith closed water circulation

example for a Stählermatic Aquaculture

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rearinq plant Ior eel fingerlings

biostaqe STÄI-1LERIvlATIC'"

production tank of eel fattening plant

Temp.NH4-NN02-Nsettleable solidsfresh water demandgrowing rate of eelsFQ

oemgll S;mg/l S;mg/lrYcl/d(Yc,/di.M.

24-280,20,1

°30,91,3

Stählermatlc" intensive fish farming plant with a yearly production of 100 t eels

AQUACULTURE in the latest style

For this reasons the development ofprocesses, which work highintensive, with a low waterconsumption and which areindependent of environmental effectswas pushed since many years.

The object is the ecological,controllable production of high-gradekinds of fishes and crustaceans andalso or fingerlings in plants with high 1

technicallevel.

Such a production of fishes allows astrong spatial concentration, lowlabour costs end high profit.Especially aquacultures with closedwater circulation are very successfulin this way.

The breeding of fishes in circuitplants is the most intensive andpromising kind of aquaculture. Itsmain task Is the purification ofwastewater caused by fishexcrements.

Growing of an eel in dependence of watertemperature

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80 '"60

40·

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14 16 18 20 22 24 26 28 30 32'C

automatical feeding of eels with pellets.;! ' ~

The advantages of the intensive fish farming

The fishes can be produced withlowest quantities of fresh warer.

The independence of natural plantposition give the possibility toproduce near by marketing sites.

This method is independent ofclimatic conditions and a low energyconsumption will be needed to heatthe water. production tank of plastic

In the plant the fishes are coveredagainst parasites and illness.

It is possible, to produce the fishesas the marketinq demands.

Economical produonon of fry:fingerlings and fooel fishes in circuitplants.

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Aquakultur

Temp.NH4-NN02-Nsuspended solidsfresh water demandgrowing rate TilapiaFQ

oemg/lmg/lmg/l(Xl/d%/d

24 - 280,20,1

°32,00,9

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Optimalliving conditions for the fishby continuously high water qualityguarantee better growing ratescompared to conventional systems

IStählermatic® aquacunurs with closed ciculation for Cl quantity of 150 tons Tüapia per year

Biological purification of thewastewater using the combinedsubmerged contact aerator andactivated sludge process with thesystem STÄHLERlVlATIC"

rearing area

Stählerrnaticl~ fish rarming plant in 'I'allinnlEstonia Ior produotion of sturgeon fingerlings and breeding

°C 24-26mg/lSO,2mg/lSO,lmg/l °'Yod 3

Temp.NHrNN02-Nsuspended solidsfresh water demandweightoffishBeluga-sturgeons (6 m) kgBeluga-sturgeons(30m) kgBeluga-sturgeons(6 a) kgSibirische-sturgeons(6m) kgFQ 0

1-25-1230-501-1,51,3

Microseopie picture ofnitrificatic biom ass

Building view of a fish farming plant

Expe:riences of 20 years

Highest permanent processstability.

There are more than 40 aqua-cultul'e plants with a yearlyproduction capacity up to 400 tonsof different kinds of fishes workingworldwide. More than 400wastewater treatment plants forcommunal, industrial andaqricultural wastewater workingwith the systemSTÄHLERMATIC®.

Highest process stahility andwater quality using hiologicalwastewater treatment

The use of the patenred systemSTÄHLERMATIC®for biologicaltreatment of fish productionwastewater guarantees highestprocess stability.The extensivewastewater treatment with simul-taneous nitri and denitriflcation andbiologie al P-elimination guaranteescontinously, the biologie aldecomposition of products ofmetabolism. noxious for fishes,amrnonium, nitrite and nitrate andorganic components.

The system STÄHLERMATIC"worksonly biologica1 without any additionof ehernie al and without mechanicalfilters. The eutrophie biom ass can beused for feed productlon 01' turned toaceount in the agriculture andeonventional fish farms.

Optimal oxygen supply

Caused of the safe and eeonomicalgasification of the circuit water withautomatically regulated oxygenreactors an optimal oxygen supply isguaranteed.

Minimum space requirement

space requirement for a plant of ayearly quantity of 100 tons: appr. 750m2. The technique is keptcontrollable in aceordance with thescientific and practical findings.Variable kinds of the productionparts are used made of concrete,plastic 01' steel.

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Controllable keeping conditionsand prophylaxis of illness of thefish stock

The separate arrangement of theproduction tanks allows a prophy-laxis and control of fish illness.The biostage will be used with acontent of dry solid matters of< 5,0 mg/m3. So the pathogenousgerms will be eliminate biological.

Lowwater consumption

STÄHLERMATIC® aquaculturecirculation plants works with freshand salt water for the productionof nearly aH kinds of fishes liketropical fishes and cold water fishes.The system needs a waterexchangeof appr. 3 per cent from the plantvolume per day.

Self control

Easy handling and sure operationby easy measurement for theconstant control of the importantparameter.

High feeding exploitation

Optimalliving conditions bycontinuously high water qualityguarantee best growing rates.

Aquakultur

a) fattening plantb) Fingerling plantc) Breeding plantd) First forage

100 ]ato Suitable kinds of fishes for the30 ]ato aquaculture30 Mio.lOMio. The plants are qualified for theoe 24 -26 production of most of fresh and salt

7,0 water fishes.mg/l 3mg/l 10 There are secured experiencesmg/l 0,2 for following kinds offishes:mg/l 0,05mg/l ° freshwater saltwater%/d 2 sturgeon sea perchGrowth Feed eel sea brassrate quotient%/d FO danubian fish crustaceanes0,9 0,91,8 1,3 tilapia shrimps i.e.2,0 1,0 carp

trout

shrimps

tench i.e,

Temp.pH-valueBODeODNH4-NN02-Nsettleable solidsfresh water demand

eelsturgeondanubian fish

Buildingof the own plant of Stähler

The own plant of Stähler in HadamarNiederzeuzheirn has a yearlycapacity of 120 tons in two Iines. Theintention of this plant is production offishes, demonstration, training andresearch with new kind of fishes.It is possible to visit the plant.

Marketing of aquacultures plantswith closed water circulation andtheir plant components

Supply ot know-how

Providing of know-how documen-tation and operating instructions

Laboratory equipment for bio-chemical, bacteriological andanalytical analysis for water andfishes

Measurement and control system foraquacultures for the waterparameters

Services of Stähler GmbH

Issuanc:e of licenc:es formanufacture and marketing ofSTÄHLERMATIC@ aquacultures

Advice of plant technqlogy, fisherybiology and feed technology

Advice of plant technology; fisherybiology and feed technology

Providing studies like feasibilitystudies. operatin~ and marketingstudies operating pilot plants andtentative operations

Planning of STÄHLERlvlATIO"aquacultures, conceptlon forreconstruction of aquacultures

Sending specialists for manage-ment, education of staff

Delivery of eggs, fry;fingerlings ofdifferent kind of fishes

Arrangement for sale of theproduced fishes

Marketing of wastewater treatmentplants system STÄHLERlvlATIC®forcommunal, industrial andagricultural plants

STÄHLERGmbHMühlenhof D-6SSB9 Hadamar-Niederzeuzheim Telefon 0 64 33 / 20 6B Telefax 69 60

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