CADSON Aquaculture Engineering and Equipment Manufacturing

Details & Description

Recirculating aquaculture systems (RAS) have become more numerous and equally sophisticated as land-based aquaculture production has increased. Recirculating aquaculture systems represent a new way to farm fish. Instead of the traditional method of growing fish outdoors, this system rears fish at high densities, in indoor tanks with a ‘controlled’ environment. Recirculating systems filter and clean the water for recycling through fish culture tanks. Water is typically recirculated when there is a specific need to minimize water replacement, to maintain water quality conditions which differ from the supply water, or to compensate for an insufficient water supply.

There are innumerable designs for recirculating systems and most will work effectively if they accomplish aeration, removal of particulate matter, biological filtration to remove waste ammonia and nitrite, and buffering of pH. These processes can be achieved by biofilters. These are living filters composed of a medium (corrugated plastic sheets, beads, or sand grains) upon which a film of bacteria grows. The bacteria provide the waste treatment by removing pollutants. The two primary water pollutants that need to be removed are (1) fish waste (toxic ammonia compounds) excreted into the water and (2) uneaten fish feed particles. The biofilter is the site where beneficial bacteria remove (detoxify) fish excretory products, primarily ammonia.

Re-oxygenating the culture water as it returns to the fish tank is crucial. Oxygen is the first limiting factor in recirculating aquaculture systems and with less than the required levels most fish and other aquatic organisms will die in a very short period of time. It is also critical that biofilters have access to adequate oxygen. Biofilters are homes to nitrifying bacteria, which are aerobic (use oxygen during respiration). Furthermore, nitrification, the conversion of ammonia to nontoxic nitrate by the bacteria, cannot occur without the presence of oxygen.

This system signi?cantly reduces the amount of space and water needed to intensively produce seafood products. Filtration systems work continuously and keeping water clean. In this way, healthy environment is provided for fish.

Business Services

Re-Circulating System Design is first Part of Project Works. After Calculation & Design You Can Estimate Your Project Budget According To Your Requirement. Mostly Designers are use 2D AutoCAD Design for this Engineering Design.

CADSON Use Solidworks 3D CAD Software to Design RAS Project & Equipment. This is Better then 2D Drawings to understand Actual Situation like Prototype.

CADSON Follow SRAC Rules & Engineering during Project Design.

Bangladesh Have More Challenge then Other countries. So, That Customize RAS Design is More Important to Make Project Viable. Project Calculation & Design Depends on Project Size, Type of Fish, Water Quality.

We Focused on Water Quality, Safety Automation and Minimizing the Electric Load. Remember That, In Bangladesh Feed Quality Demand High Flow Rate & Oxygen which increase Electric Load. So That, Pump Selection & Automation is More Important to Reduce the Operating Cost.