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Home > APPLICATIONS > Aquacultural

Aquacultural

漁業分野

The fine bubble can stabilize the dissolved oxygen concentration.

In addition, although the mechanism has not been elucidated, the mortality rate of seafood can be reduced by activating organisms and microorganisms by ultrafine bubbles (nano bubbles), which is also effective in shortening the time until shipment. 

Main achievements in the aquacultural field

●Using 7L~1200L/min OK Nozzle

● Fish preserve — Squid, crab, fish, clams and other shellfish, bream preserve  on the fishing boat 

● Aquaculture — Nori, flatfish, eel, shellfish: scallop, tiger prawn, shrimp: whiteleg shrimp, prawn, black tiger prawn, crab

Main application examples in the aquacultural field

Nori Seaweed cultivation in the Ariake Sea (using 100L/min OK Nozzle) 

Nori seaweed picking scenery off the Yabe River in Yanagawa City, Ariake Sea

For the first time in the world, abundant fishing due to the fine bubble generation in the seaweed fishing grounds! Also, there is little discoloration. 

有明海の海苔養殖1 有明海の海苔養殖2

Using fine bubbles in the entire process of seaweed production

海苔漁場
Fine bubbles in seaweed fishing ground
酸洗いにもファインバブル
Fine bubbles for pickling
種付け
Seeding
種付け2
Seeding
海苔5 466×595
Roughly mincing the seaweed
海苔6 466×595
Laver sheet-forming process

Nori seaweed cultivation in Ariake Sea (PDF)

Flounder farming in Jeju Island, South Korea (using 300L/min OK Nozzle)

●The amount of seawater in all culture ponds is 1000 m³

● 300L/min OK Nozzle is used

● The self-in-taken gas is oxygen
Do level is determined almost in proportion to the amount of self-in-taken oxygen, therefore it can be easily controlled.

砂底ヒラメ養殖取材 Jeju Island sand bottom flounder farming coverage

Using 300L/min OK nozzle with oxygen

溶存酸素

Computer management of dissolved oxygen and hydrogen

Drainage: Do level 6.8PPM     Pond: Do level 9.1PPM     Water temperature: 18 ℃

300LminOKノズル設置場所

300L / min OK Nozzle installation site

OK Nozzle is installed to some of the pumped underground seawater to make it into oxygen fine bubble seawater.

Data comparison before and after OK Nozzle installation

Flounder farming in Jeju Island, South Korea (using 1200L/min OK nozzle)

Oxygen dissolution system using [large OK Nozzle: MB1,200] at a flounder breeding farm in Jeju island

① The total water area of the farm is about 25,000m2

② The plan is to let one MB1,200L nozzle cover the water area of approximately 8,000 to 10,000M2

MB1200ノズル
MB1,200 nozzle and 7.5HP pump

0400PE管
0400 PE Pipes

Fine bubbles for Asari clam culture

Using 100L/min OK Nozzle. Six nozzles in total.

アサリの養殖1 ①Immediately after the fine bubble was generated, dirt surfaced to the extent that workers disliked it. One nozzle was used for this tank. The excrement that had been accumulated at the bottom of the water tank is now gone. It has become so clean that it does not need to be cleaned.
あさりの養殖2 ②Made new water tanks adapting to the usage of fine bubbles.
③Ammonia concentration decreased extremely.
④With fine bubbles, strong clams live longer, dead ones open their shells and in few days the shellfish-bodies disappear.

Sea water analysis results of Asari clam culture water tank 

Analysis datas of water quality

15t Water tank

  Concentration Evaluation
Ammonia 0.0mg/L 1
Nitrous acid 0.0mg/L 1
Nitrate 50mg/L 4
Phosphorus 2.0mg/L 5
PH7.5    

10t Water tank

  Concentration Evaluation
Ammonia 0.0mg/L 1
Nitrous acid 0.5mg/L 2
Nitrate 100mg/L 5
Phosphorus 2.0mg/L 5
PH7.5    

Evaluation: 1 means no problem and 5 being problematic

APPLICATIONS

  • Cleaning & Sterilization
  • Waste Water Treatment
  • Agricaltural
  • Food
  • Aquacultural
  • Flotation Separation
  • Gas Dissolution Power & UFB Water Generation
  • Resistance Reduction
  • Machine Tools
  • Fuel Improvement
  • Residential Use
  • ファインバブルとは
  • 実験・報告・論文
  • Q&A

CONTACT

Loop Flow OK Nozzle
OK Engineering Co.,Ltd.

102 Grace Terada-cho
9-8, Kokubu-cho,
Tennoji-ku, Osaka-City,Osaka, Japan
543-0044

web@oknozzle.com

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For any inquiries, questions or quotation requests, please fill out the following form or email us directly web@oknozzle.com

Contact Us

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Loop Flow OK Nozzle

102 Grace Terada-cho
9-8, Kokubu-cho,
Tennoji-ku, Osaka-City,Osaka, Japan
543-0044

web@oknozzle.com

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