There are different models of drum filters depending on the type of filtration you wish to install in your system.
Filter model : Open version
There are several types of drum filters. Closed filter models can be found, but also open models. Enclosed models will be surrounded by a tank to protect them and will operate either by gravity or by pumping. This filter model will be used for ponds that are lifted out of the ground.
For in-ground ponds, you will not be able to use a gravity drum filter. You have two options:
- Choose a closed drum filter, which will work by pumping. This results in additional energy expenditure.
- Choose an open version of the drum filter. (see below)
If you have chosen the second option, here are a few lines to introduce you to the principle and advantages of this version:
The open version of the drum filter is similar to the closed version. However, it does not have a tank surrounding it. It is therefore directly integrated deep into the ground, to be at the pond water level. This option will save you energy and money, as the version without the drum filter is also cheaper.
Independent version with stainless steel tank
Independent version with stainless steel tank is a version of the filter that can stand on its own. Therefore, it is easily fitted. Moreover, it has the advantage of being able to be installed wherever you want. Stainless steel tank ensures a long life for your appliance.
With this filter model, you will save valuable time and money.
Filter model in anti-corrosion tank version
The anti-corrosion tank provides significantly greater longevity than its counterparts in the most corrosive environments, including those with water or salty air. This type of drum filter often avoids metal parts which are the target of corrosive agents. Plastic components are preferred. Metal parts are reduced to the bare essentials.
Nozzles can be made of ceramic. Therefore, they will resist corrosion for many years.
Modular filter design: diameter and length
The modular design is a customized filter design. Are you considering customizing your own drum filter design?
this option is for you. Of course, it is based on a drum filter model. Of course, it is based on a drum filter model.
For the basins, you will be able to realize drums of smaller sizes than the standard range. So you can treat even your smallest installations. But you will also find your happiness if you are looking for a larger drum. It will be suitable for large areas of drainage.
Perhaps you are planning to expand your farm in the near future? You can therefore design a larger, custom-made drum filter to meet this future demand as well.
Improve the performance of an existing filter?
If your drum filter is not performing as expected, it may be due to several factors:
- the filter is not submerged enough;
- the filter chamber is poorly constructed;
- the actual flow rate is higher than the one used for the design;
- the suspended solids load is higher than the design load;
- the filter mesh is clogged with lime deposits or other deposits;
- the backwash pump does not deliver sufficient pressure;
- the spray nozzles might be blocked…
The video shows an open channel drum filter placed in the loop of a recirculating aquaculture. The concentrations reached range from 2000 to 9000 mg/L (depending on several parameters). If your current drum filter does not deliver this performance, it can be upgraded to come close. The first step is to send us the documentation of your current filter, the motor ratings and photos and videos of the current operation. One of the most common upgrades we make is to modify the filter control system.
FAQ
What is the Difference between an Open and Closed Drum Filter?
A closed drum filter is integrated into a tank, making it more suitable for above-ground ponds and allowing for gravity or pump operation. In contrast, an open drum filter does not have a tank: it is installed directly buried at water level, making it ideal for excavated ponds. This model consumes less energy and is generally less expensive, while offering efficient mechanical filtration.
Are there Corrosion-Resistant Drum Filters for Seawater?
Yes, some models are specifically designed to resist salt corrosion, especially in marine or salty air environments. These filters use components made of plastic or ceramic (such as nozzles) instead of metal parts. Some tanks are anti-corrosion to ensure increased longevity, even in very aggressive conditions.
Can the Dimensions of a Drum Filter be Customized?
Absolutely. Thanks to a modular design, it is possible to choose a custom diameter and length to adapt to specific installations, whether small or very large. This also allows for anticipating future operational growth, such as an increase in the flow rate to be treated. This flexibility is ideal for adapting the filter to technical constraints or growth objectives.
How to Improve the Performance of an Already Installed Drum Filter?
If a drum filter is not performing satisfactorily, it is often possible to optimize it without replacing it. You need to check:
- the immersion depth,
- the quality of the filter mesh,
- the backwash pump power,
or the ‘condition of the nozzles.
A modification of the control/command system or an adjustment of the flow rate can significantly improve performance, sometimes up to 2000 to 9000 mg/L of extracted matter concentration.
Which Drum Filter Model to Choose for a Freestanding Installation?
For an easy, mobile, or independent installation, the freestanding version with a stainless steel tank is ideal. This model can be installed wherever you want without the need for heavy infrastructure, and offers great durability thanks to its robust structure. It is particularly recommended in demanding environments or when a rapid implementation is necessary.
Let's start today!
Our experts are ready to assist you in choosing the right drum filter for your project! You can make a free design online. You can also contact us by phone or email to discuss your project!
