High-Efficiency Multi-Media Filter

The high-efficiency multi-media filter is an efficient water treatment device. Its working principle is based on layers of filter media of different sizes to achieve hierarchical filtration of impurities in water. This filter consists of multiple filter beds, each of which is composed of different particle sizes and sizes of filter media, forming a stepped filter structure. When raw water flows into the filter from the upper part, larger particles are first trapped by the coarser filter media layer, while smaller particles are gradually captured by the finer filter media layer. This multi-stage filtration design ensures that the multi-media filter can effectively remove suspended solids, particles and impurities from the water.

Composition

The high-efficiency multi-media filter is mainly composed of the following components:

1. Tank

As the main body of the entire filtration system, the tank is filled with filter media of different particle sizes and sizes.

2. Water distribution components

Responsible for evenly distributing raw water to all parts of the filter bed to ensure the uniformity of the filtration process.

3. Support components

Provide stable support for the filter material layer to prevent the filter material from being displaced during the filtration process.

4. Backwash trachea

Provides the necessary airflow during the backwash process to help loosen the filter layer in order to more effectively remove accumulated impurities.

5. Filter media

This is the core component of a multi-media filter, usually including quartz sand, anthracite, manganese sand, and other materials, which are arranged in a certain hierarchical order.

6. Exhaust valve

During the backwash process, excess air is discharged to ensure the stability of the pressure in the filter.

Principle of multi-media filter

The filtration principle of a multi-media filter is based on physical interception and adsorption. When raw water passes through the filter material from top to bottom, the suspended solids in the water are intercepted by the surface of the filter layer due to adsorption and mechanical flow resistance; when water flows into the middle of the filter layer, due to the closer arrangement of sand particles in the filter material layer, the particles in the water have more opportunities to collide with the sand, resulting in impurities trapped in the filter material layer, thus obtaining clear water quality.

The principle of backwashing of multi-media filters

Backwashing is an important part of a multi-media filter. Its purpose is to remove the accumulated impurities in the filter material layer and restore the filtration efficiency of the filter. When backwashing, the direction of water flow is changed to bottom-up. In this way, the filter material layer expands and suspends, and the dirt in the filter material layer is washed away by the shear force of the water flow and the collision friction between the particles. The frequency of backwashing is usually determined by the pressure difference between the inlet and outlet, usually once every 2 to 3 days, and the specific time needs to be adjusted according to the turbidity of the raw water.

Parameters

Filter material selection and hierarchy design

When selecting filter media, the mechanical strength, chemical stability, safety to the human body, adsorption capacity and pollution interception capacity of the filter media must be taken into account. The selection and arrangement of filter media particle size has a direct impact on the filtration effect. Generally speaking, the particle size of the lower filter media should be smaller than the particle size of the upper filter media to ensure that each layer of filter media can fully play its role. The ratio of the height of the filter bed to the average particle size of the filter media is usually between 800 and 1000.

Application field

The high-efficiency multi-media filter is widely used in various fields due to their high filtration performance.

1. Water treatment field

It plays an important role in urban tap water treatment, industrial water treatment, and swimming pool water treatment, and can effectively remove suspended solids, sediment, and organic matter from water, providing clear and transparent water quality.

2. Agricultural irrigation

In agricultural irrigation systems, multi-media filters can filter sediment, particles, and organic matter in the water, protecting irrigation equipment from clogging and damage, while improving irrigation water quality and increasing crop growth and yield.

3. Industrial applications

In the pharmaceutical, food processing, electronic plating, and chemical industries, multi-media filters are used to purify process water, circulating water, and cooling water, protecting production equipment from particles and contaminants.

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.

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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

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