Water filtration unit for aquatic research facilities

30+ Years of experience

Based on years of experience in commercial aquaculture, ZEBCARE has developed a standard Water Filtration Unit.

Optimal aquatic research systems make use of RAS technology. By recirculating the system water through a mechanical and biological filtration system, the system water quality is kept constant, while water usage is low.

The standard water filtration unit incorporates:

• Mechanical filtration
• Pump tank
• Biological filtration
• UV-C treatment
• Heating
• Monitoring & control of system water quality parameters and performance of system components

Specifications of standard water filtration unit:

Mechanical filtration

The standard water filtration unit is constructed of durable materials like PE, PP, PVC and 316 stainless steel. The filter system (dim. 1,70 x 1,00 x 2,10 meter (LxWxH)) has the following set up:

• Solid waste is removed by a self-cleaning drumfilter. This fully automatic self-cleaning mechanical filter can deal with suspended solid loads up to 25 mg/l.

Pump tank

After this mechanical treatment, the system water flows to the pump tank. This tank, which is connected to the drumfilter has the following components:

• A valve for manual water supply and a floater ball valve for automatic water supply
• A drain and overflow to be connected to the sewage
• All necessary connection points for the main and back-up pump (pump for returning system water to the aquaria)
• A dedicated submerged pump for pumping the system water to the biological filter placed in the pump tank.

Biological filtration

On the pump tank, a biological filter is placed. The filter consists of two connected filters constructed of PE in colour blue. These filters are provided with system water by a dedicated submerged pump set in the pump tank. The first biological filter is a moving bed filter. In this filter an HDPE filter material is used with a large surface area on which nitrifying bacteria will grow.

From the moving bed filter, the water flows to the trickling tower. This filter is filled with a PP filter material with a large surface on which nitrifying bacteria can grow. The system water will trickle down this filter material and during that process gas exchange takes place. The CO2 produced by the fish is exchanged with O2 from the air.

UV-C treatment & heating

After mechanical and biological filtration of the system water, it is pumped by the main pump back to the aquaria. In the water supply piping to the aquaria, the following devices are present:

• A UV-C device
• An optional electrical heating device

Pumps

The filter system is equipped with a main and a back-up pump. These identical pumps are placed outside the pumptank. Water is periodically refreshed by pumping water from the pump tank to the sewage.

Please contact us for more information regarding our standard filtration unit or visit our webshop to obtain a quote for one of our other aquatic research systems.

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