Filterpress filterpress is a device that performs the filtration process in a large volume and separates liquids and solids from each other. Filter presses are mainly filters under pressure, which are made of plates that are placed between a fixed plate and a moving plate that is connected to a hydraulic jack and are pressed together.
The work of the filter press is to extract water from the slurry that has excess water. With the help of filter press, you can produce cakes with humidity between 19 and 25%. Nowadays, due to the high cost of using drying sludge beds, the use of filter press has become very common in the wastewater treatment industry in the country. The slurry is made by passing the liquid through the openings of the plates and trapping the particles and grains behind the plates.
Components of the filter press machine
Chassis of the filter press machine: The chassis of the filter press machine includes the input parts of the filter, the filter back, the moving plate and the arms.
The screen of the filter press machine: The plates used in the filter press can be made of plastic, cast iron or aluminum.
Filter press frame: The frame used in the filter press can be made of plastic or cast iron. or aluminum should be prepared.
Jack and hydraulic unit of the filter press machine: The hydraulic unit part of the filter press machine is composed of electric motor, hydraulic pump, hydraulic valve and hoses.
Types of filter press devices
Manual filter press: The cheapest and simplest filter press model is the manual filter press.
Manual filter presses always need an operator to operate and are controlled by human power. For this reason, manual press filters have a low performance speed and are used for small scales.
Automatic filter press: In automatic filter presses, operations such as opening and closing the jack, loading and unloading the cake, moving the press plates and washing the plates without user intervention and as It is done automatically. Automatic press filters are designed in two types of membrane and chamber. The difference between these two models in the action of suspension compression is the placement of the plates and the type of plates.
Hydraulic press filter: In the hydraulic pressure filter, the movements of the filter press plates are done hydraulically. In the hydraulic filter press, electric control parts are added to the device to control the device and operation.
How the filter press works
Filtration: The slurry enters the filter press from above and the filtration process begins.
Compression: In the compression stage, to separate the remaining water from Slurry, air, or water is introduced to the back of the slurry with high pressure so that the slurry chambers are under pressure. The rest, the air stream is blown into the cake.
Cake discharge: The plates containing the cake are spaced apart so that they can be easily removed from the filter press.
Thumb and Filter washing: Filters are washed with water to be ready for reuse.