Recirculation aquaculture systems (RAS) represent a new and unique way to mud crab and shrimp fish farm . These Ras systems are used all around the world for the production of many crab and shrimp fish species in a more efficient controlled environment. Currently Recirculation aquaculture systems- RAS is one of the fastest growing sectors of agriculture business in Bangladesh. Growing public demand for a healthy, tasty and affordable mud crab fish is stimulating the "boom" in RAS mud crab and shrimp fish industry.
Aquaculture System: Zero Water Discharge for Vannamei Shrimp and Prawn Farming in Bangladesh
The ZDRAS is a land-based fully-closed aquaculture system based on a recirculation technology cycling water through filtration processes and returning it back to the system without discharging any waste to the surrounding environment. Zero discharge RAS water treatment plant- ZDRAS has easier the technique by using HDPE Geomembrane pond liner.
It is very easy to do zero discharge RAS system water treatment which is now available in Bangladesh at low cost.
RAS offer fish producers a variety of important advantages over open pond culture. These include a method to maximize production on a limited supply of water and land, nearly complete environmental control to maximize fish growth year-round, the flexibility to locate production facilities near large markets, complete and convenient harvesting, and quick and effective disease control.
RAS can be of various sizes ranging from large-scale production systems (over 1 million pounds per year) to intermediate-sized systems (500,000 pounds per year), to small systems (50,000 pounds per year). They can be used as grow-out systems to produce food fish or as hatcheries to produce eggs and fingerling sport fish for stocking and ornamental fish for home aquariums.
Clever Vannamei Shrimp Farming Technique by Pond Liner and Nano Bubble Aeration System with Ozone(o3) Generator by "Osmosia Water Technology" in Dhaka Bangladesh
In the past few years, potential to grow fish on a commercial-scale been realized. New water quality technology, testing and monitoring instrumentation, and computer enhanced system design programs, much of it developed for the waste water treatment industry, have been incorporated and have revolutionized our ability to grow fish in tank nursing with pond culture. RAS application will be more reliable, profitable, and meet the demand of aquatic enterprise.
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