Automatic Backwash Disc Filter Machine

Our automatic backwash disc filter machine consists of a series of flat discs, with each disc featuring grooved surfaces that facilitate the capture of suspended solids. The discs are arranged in a parallel configuration, allowing for the efficient interception and removal of impurities from water or other liquids. The grooves on the disc surfaces promote the formation of a filter cake, which enhances the overall filtration process.

 

Product Parameters

Filter element number: 2 ~ 10

Working pressure: 0.2Mpa ~ 0.8Mpa

Accuracy range: 20μm ~ 200μm

Operating temperature: <60°C

 

Design and Working Principle

At the heart of the Disc Filter's design are a series of specially engineered discs, each featuring a pattern of grooves on both sides. These grooves form a complex network that serves as the primary filtration barrier. As water flows through the stacked discs, solid particles become trapped at the intersections created by the grooves' edges. This unique configuration allows for both surface straining and coagulation, significantly enhancing the filtration process.

 

Surface Straining and Coagulation

Surface straining occurs when particles are physically blocked by the discs' surfaces. This mechanism is particularly effective for larger contaminants that cannot pass through the narrow gaps between the grooves. On the other hand, coagulation involves the clumping together of smaller particles, which then become large enough to be captured by the filter. The Disc Filter's design facilitates both processes simultaneously, ensuring a wide range of particle sizes can be effectively removed.

 

Continuous Operation and Reliability

The Disc Filter system is designed for continuous, round-the-clock operation. Its automatic switching between filtration and backwash modes ensures an uninterrupted supply of filtered water. The reliability of this system is further bolstered by its low susceptibility to pressure loss, thanks to the efficient backwash cycles that prevent excessive buildup of solids.

 

Space and Water Efficiency

Compared to traditional filtration systems, the Disc Filter boasts a compact design that requires less space. This makes it particularly suitable for applications where space is at a premium. Additionally, the system's self-cleaning capability results in lower water consumption during the backwash process, contributing to its overall water efficiency.

 

Operation and Functionality

The operation of a disc filter can be described in several stages:

1. Feed Stage. The raw liquid is fed into the center of the disc stack, where it is distributed evenly across the surface of each disc.

2. Filtration Stage. The liquid flows radially outward through the disc material, with the solids being retained on the surface of the discs.

3. Cleaning Stage. To maintain efficiency, the discs are periodically cleaned using a backwashing process. This involves reversing the flow of water through the discs to remove accumulated solids.

4. Discharge Stage. The cleaned liquid is then discharged from the system, while the filtered solids are removed and disposed of accordingly.

 

Applications

Widely used in food, textile, metallurgy, plastics, pharmaceuticals, building materials, papermaking, and other industrial sectors, as well as in HVAC systems, irrigation, wastewater treatment, municipal water supply, and many more industries.

1. Water Treatment. For the removal of suspended solids and turbidity from municipal and industrial wastewater.

2. Mining and Minerals Processing. To filter slurries and recover valuable minerals.

3. Food and Beverage Industry. For the clarification and purification of juices, wines, and other food-grade liquids.

4. Pharmaceutical Industry. For the filtration of pharmaceutical solutions and suspensions.

5. Oil and Gas Industry. To filter produced water and separate oil from water in offshore and onshore installations.

 

Operation and Maintenance Tips

1. Preparation before operation:

Before starting the disc filter, ensure that all connections are secure and leak-free.

Check the cleanliness of the filter to ensure there is no dirt or damage.

Verify whether the operating parameters of the filter, such as flow rate, pressure difference, and filtration accuracy, meet the process requirements.

2. During operation:

When starting the filter, the flow and pressure should be slowly increased to avoid damage to the filter due to sudden impact.

Regularly check the operating status of the filter, including pressure difference, flow rate, and filtration effect.

Pay attention to whether the filter has abnormal sound, vibration or leakage, and if so, deal with it promptly.

3. Cleaning and maintenance:

The disc filter should be cleaned regularly to remove dirt and sediment from the filter.

When cleaning, a cleaning agent suitable for the filter material and process requirements should be used.

During the cleaning process, be careful not to damage the filter, and avoid using hard brushes or high-pressure water guns.

After cleaning, the filter should be thoroughly rinsed to ensure that there is no residual cleaning agent.

4. Record and monitor:

Record the operating data of the filter, such as the pressure difference before and after filtration, flow rate, cleaning frequency, and filter replacement time.

Monitor filter performance changes to detect and resolve potential issues in a timely manner.

 

FAQ

1. Q: What is the function of a filter?

A: The main function of a filter is to remove solid particles, impurities, and harmful substances from liquids or gases, in order to achieve purification, clarification, and protection of equipment.

2. Q: How to choose a suitable filter?

A: When choosing a filter, factors such as the properties of the material being filtered (e.g., viscosity, temperature, corrosion), required filtration accuracy, processing capacity, operating pressure and medium, as well as the type, material, size, and installation method of the filter should be considered.

3. Q: What is the working principle of a filter?

A: The working principle of a filter mainly relies on physical screening, deep interception, absorption, or chemical reactions to remove impurities or harmful components from the material being filtered.

4. Q: How to maintain and care for a filter?

A: Maintenance of filters includes regular cleaning or replacement of filter elements, inspection of seals and fasteners, maintaining stable operating pressure, and avoiding overloading. Specific methods should be referenced from the filter's instruction manual and maintenance guides.

5. Q: What is the service life of a filter?

A: The service life of a filter depends on its working environment, processing volume, and filtration accuracy. Generally, when the filter's pressure drop reaches a certain value or the filtration effect decreases significantly, it needs to be replaced or cleaned.

6. Q: What should be paid attention to during filter installation?

A: During filter installation, attention should be paid to the directionality, ensuring that the fluid enters and exits from the correct ports. Also, the piping system should be cleaned before installation, and the filter should be securely fastened and sealed as required by the instructions.

7. Q: What is the replacement cycle for filters?

A: The replacement cycle for filters depends on their working conditions and filtration requirements, and is usually indicated by pressure difference indicators or timers. When the filter's pressure drop reaches the set value or the filtration effect decreases, it should be replaced in a timely manner.

 

Why Choose Us

· Professional manufacturer with many years' experience

· Good quality with competitive price

· OEM & ODM are welcome

· Various payment items are acceptable

· Good service by experienced manager

 

AIDA Philosophy

1. Management Concept:

· Satisfy the customers' demand --- Touch customers, trust with our products and services

· Make employees happy --- Pursue higher material and spiritual happiness

2. Company Mission:

· Focus on customer needs, provide best filtering solution

· To be the lifelong partner with customers

3. Corporate Vision:

· Become a global purification leadership brand

4. Values:

· Customer: Pursue the ultimate experience, enjoy excellent quality

· Team: Trust, responsibility, growth, win-win

· Work: Simple, sincere, efficient, dedicated