Belt filter press is a kind of equipment widely used in sewage treatment and industrial solid-liquid separation, and its operation process and principle involve knowledge and technology in many aspects. This article will introduce the operation process and principle of the belt filter press in detail, and help readers better understand the working mode and characteristics of this equipment.
1. The composition and working principle of the belt filter press.
The belt filter press is mainly composed of the following parts: transmission system, deviation correction system, gravity dewatering area, wedge-shaped dewatering area, partition dewatering area, tensioning device and discharging device. Its working principle is to use the interception effect of the filter cloth to separate the suspended solids and solid particles in the sewage, and at the same time apply pressure to make the liquid penetrate the filter cloth, and the solid particles are trapped on the surface of the filter cloth.
Second, the operation process of the belt filter press.
1.Start-up stage: First, start the transmission system to make the filter cloth belt of the belt filter press start to rotate. At this point, the guiding system is in its initial state, ensuring that the filter tape is in the correct position.
2.Feeding stage: The sewage enters the gravity dewatering zone, and in this stage, the large particles and suspended solids in the sewage begin to settle due to the action of gravity, and the solid-liquid separation is initially realized.
3.Wedge-shaped dewatering zone stage: The sewage enters the wedge-shaped dewatering zone, which is designed to allow the sewage to flow in a gradually decreasing width, further increasing the distance between suspended solids and solid particulate matter, and improving the separation effect.
4.Partition dewatering zone stage: The sewage enters the partition dewatering zone after passing through the wedge-shaped dewatering zone, which consists of a series of parallel partitions, and the distance between the partitions gradually decreases, forming a series of narrow channels. In the channel, solid particulate matter in the effluent is further trapped on the surface of the filter cloth due to the reduced flow rate and increased pressure.
5.Tensioning and discharging phases: After the above stages of treatment, a large amount of solid particulate matter accumulates on the filter cloth belt of the belt press. At this point, the tensioner starts to work to tension the filter cloth belt and ensure that the solid particles are in close contact with the filter cloth. Subsequently, the solid particles are scraped off the filter cloth by means of a discharge device to form a piece of dry mud cake for subsequent processing and disposal.
6.Cleaning stage: After the discharge is completed, the belt filter press enters the cleaning stage. The cleaning water is evenly sprayed on the filter cloth belt through the nozzle to rinse away the solid particles remaining on the filter cloth. The cleaning water is discharged out of the machine through the drain tank.
7.Shutdown phase: After cleaning, the drivetrain gradually slows down and eventually stops rotating. The guiding system returns the filter cloth tape to its original position and the entire running process ends.
3. Characteristics of belt filter press.
1.Large processing capacity: The belt filter press has a large processing capacity and can continuously and efficiently treat a large amount of sewage.
2.Good separation effect: Through the treatment of multi-stage dehydration zone, the belt filter press can achieve high-efficiency solid-liquid separation and obtain solid particles with low moisture content.
3.Strong adaptability: The belt filter press can be individually designed and configured according to different treatment requirements to adapt to different sewage treatment scenarios.
4.High degree of automation: The belt filter press adopts an automatic control system, which can realize remote monitoring and operation, reducing labor costs and maintenance difficulties.
5.Stable and reliable operation: The belt filter press has simple structure, stable and reliable operation, convenient maintenance, and can run continuously for a long time without being prone to failure.
6.Energy saving and environmental protection: The belt filter press has low noise, low vibration and low energy consumption during operation, which meets the requirements of energy conservation and environmental protection.