Recirculation aquaculture systems (RAS)
ZHONGKE is expert for the realization of RAS system, an exciting, eco-friendly and unique way to farm fish. Instead of the traditional method of growing fish outdoors in open ponds, net cages or tanks, this system rears fish at high densities within a operator controllable rearing environment inside a building. Recirculation Aquaculture System, making-up with pools, biological treatment, skimming capacity, ozone demanding, aeration/oxygen demanding.

For Recirculation Aquaculture System we are the specialized provider of
General layout of the complete farm
Detailed design of the fish pools including piping system and the workshops
Planning of the different recirculation systems according to the fish biology and production goal
Planning of incoming water and waste water treatment
Planning of the total energy supply (electricity, air/oxygen, cooling/heating)
Equipment supply Made
Training of the farm staff and professional start of operation of the projects
During the initial operation and later on we are always at your service with our know how and experience.

The main process technology are:
Mechanical filtration removes suspended particles
Bio treatment with SPL convert Ammonia and Nitrite into the no poisons Nitrate.
Protein skimmer with venturi injection system remove protein, organic compounds, BOD/COD, fine particles like bacteria and viruses, faces and oxidation products from the ozone treatment. Also dissolved oxygen is increased and pH value is stabilized.
Ozone treatment unit with controlled dosing of ozone or ultraviolet irradiation converts Ammonia and Nitrite to Nitrate reduces COD and BOD destroys the dangerous bacteria and viruses. In this way, this is the best disease prevention method.
Water environment control system
Oxygen system for high density
Circulation unit (pumps, valves, pipings) for total water circulation on the same floor.
Automatic monitoring, controlling and alarming to ensure permanent correct water Parameters and thus increase of survival rate
Safety equipment (on demanding)
Rest ozone destructor for water to ensure water safety for nursery
Rest ozone destructor for air to ensure safety for working area
Ozone gas warning device for working areas