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Rotating Drum Filters For Koi Fish Pond

Rotating Drum Filters For Koi Fish Pond

Even though Drum filters are amazingly small in size, they can filter out huge volumes of water. These are very simple devices that can give your koi fish pond excellent water clarity with much high koi fish loads. These filters are suitable for high-density aquaculture and koi fish ponds.

How Does a Drum filter work?

Drum filters are pre-filters that are automated. The water flows through a drum-shaped sieve after entering the drum filter through the inlet chamber. The drum filter has a 65-micron stainless steel screen that prevents waste particles larger than 0.065mm from passing through.

These waste particles will collect on the drum's inner side, limiting the amount of clean water that flows through it. As a result, the water level within and outside the drum will change and in turn initiate a drum cleaning cycle. The drum rotates and a powerful spray of water hits the outer drum, this will cause the settled dirt to dislodge and to be carried to the drain.

The Drum filter is convertible as a gravity feed or pumps feed device, we have models which can handle flows from 10m³ to 60m³ per hour. We have custom build models also which is capable to handle any design parameters.

Drum filter with Compact Moving bed filter.

Drum filter with moving bed is the ideal blend of mechanical and biological filtering in one housing. The volume of the moving bed module can be configured according to pond requirements. But in general, it has a volume of 0.25M³ it can accommodate at least 100 litres of high SSA (Specific Surface Area ) media and bio rings. Prefered Media are Oc -1, K-5 or K 1 etc.

The moving bed module includes a built-in rubber membrane aerator that produces microbubbles that aid in the growth of beneficial bacteria which neutralises the dissolved pollutants in your pond water.

  • Low installation height.

  • MicroController unit for motor protection.

  • Inbuilt high-pressure pump with SS 304 cleaning nozzles.

  • Durable float and lid switch.

  • Suitable for both a pump-fed and a gravity-fed set-up.

  • 48 VDC motor.

  • Replaceable sieve elements are available.

The main body components, drum components, rear cleaning system, and electric control box make up the automatic rotary drum filter. It's built of non-toxic, corrosion-resistant materials which are environmentally friendly.

Filter screens used to separate suspended materials in water is made of SS316 which is very durable and will give many years of smooth service life.

When the water from the main pond containing suspended solids enters the drum, the suspended solids are intercepted by the stainless steel filter screen, and the water without suspended solids enters the reservoir after filtration. 

When the suspended solids in the drum accumulate to a certain amount, it will cause the water permeability of the filter screen to drop, resulting in the rise of the water level in the drum. The liquid level automatic control system works.

At this time, the back cleaning water pump and the drum motor are automatically opened at the same time. The high-pressure water output from the back cleaning water pump cleans the rotary drum filter screen and the cleaned suspended solids flow to the wastewater. Collection tank under the high-pressure water washing and are discharged through the wastewater pipe to the drain or a water recovery system.

The treatment capacity may be tailored to meet specific needs. A bioreactor chamber can be added to provide additional filtration. We have can build a custom 3-stage filtration chamber with the help of high surface area filter media it can achieve high treatment efficiency.

Filtration and sewage discharge could be performed at the same time, which does not affect or interrupt the normal use of the system. Bio reactor chamber helps in the dissolved organic matter from the culture pond so that the pond water parameters can be kept at ideal levels at all times.

We import and supply many types of set-ups of Drum filters according to the project requirements. Kindly contact us for more info and orders.


KJA & Sons - Engineers and Contractors
CC – 15/ 68 A, West Karuvelipady, 
Kochi – 682005

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