1, Multi-media filter
(1) Working principle
Multi-media filter (also known as mechanical filter) is a bed of layered anthracite, sand, finely divided garnet or other materials, a typical Multi-media filter Shown in the picture:
The top layer of the bed consists of the lightest and coarsest grades of material, while the heaviest and finest grades are placed in the lower part of the bed. The principle is depth filtration - larger particles in the water are removed in the top layer, and smaller particles are removed in the deeper layers of the filter medium. So that the water quality reaches the standard after coarse filtration.
(2) Performance characteristics
Multi-media filter can remove large suspended solids in water, thereby reducing the SDI value of water and meeting the water quality requirements of deep purification. The equipment has the characteristics of low cost, low operating cost and simple operation; the filter material can be used many times after backwashing, and the filter material has a long service life.

(3) Application range
Multi-media filter is widely used in water treatment process, mainly used for pre-treatment of water treatment to remove turbidity, softened water, electrodialysis, reverse osmosis, and can also be used to remove sediment from surface water and groundwater Wait.

(4) Product introduction
The Multi-media filter produced by this product can be divided into manual type and automatic type according to the control type. The manual type mainly controls the operation, forward washing and backwashing of the filter through the adjustment of the valve; while the automatic type controls the operation, forward washing and backwashing of the filter through the FLECK controller. The material can be divided into glass fiber reinforced plastic tank, carbon steel tank and stainless steel tank. The inner wall of the tank can be coated with epoxy coating or lined with rubber for corrosion protection according to user requirements.

2, activated carbon filter

(1) Working principle
The working principle of the activated carbon filter is mainly to use the adsorption mechanism of activated carbon. The adsorption mechanism is the interaction of water, solute and solid particles. The main reason for the adsorption is the hydrophobicity of the solute to water. High affinity of solute to solid particles; another reason is mainly caused by electrostatic force, van der Waals attraction or chemical bond force between solute and adsorbent.

(2) Performance characteristics
The activated carbon filter can remove organic matter, colloid, residual chlorine, etc. in the water through the adsorption of activated carbon. The device has the characteristics of good filtering effect, low operating cost and simple operation.

(3) Scope of application
In the field of water treatment, activated carbon filters are mainly used to remove trace pollutants in water. The application scope includes decolorization, deodorization, and various dissolved organic substances; in the pure water process, it can be used as ion exchange, Pretreatment of electrodialysis and reverse osmosis to remove organic matter, colloid and residual chlorine, etc.; it can also be used as an advanced treatment method after secondary treatment to ensure the quality of recycled water.

(4) Product introduction
The activated carbon filter produced by our company can be divided into manual type and fully automatic type according to the control type. The manual type mainly controls the operation, forward washing and backwashing of the filter through the adjustment of the valve; The automatic type uses the Fleek automatic head to control the filter operation, forward washing, backwashing, etc. According to the material of the tank, it can be divided into glass fiber reinforced plastic tank, carbon steel tank, stainless steel tank, and the inner wall of the tank can be coated according to user requirements. Epoxy coating or rubber lining for corrosion protection.

3, Multifunctional iron manganese filter

(1) Working principle
The iron-manganese filter uses the catalytic effect of manganese sand to make the ferric ions in the water form an active oxide film containing crystal water on its surface, so as to achieve the purpose of reducing the content of iron ions in the water.

(2) Performance characteristics
The iron-manganese filter can remove iron, manganese and various harmful metals, and the removal rate is as high as 90%. taste, etc.

(3) Scope of application
The iron-manganese filter is widely used in the purification of water supply in industries such as food, beverage, medicine, electronics and thermal power generation.

(4) Product introduction
The multi-functional iron-manganese filter produced by this product can be divided into manual type and automatic type according to the control type. The manual type mainly controls the operation, forward washing and backwashing of the filter through the adjustment of the valve; while the automatic type uses the Fleek automatic head to control the filter operation, forward washing, backwashing and other states, according to the tank body. The material can be divided into glass fiber reinforced plastic tank, carbon steel tank and stainless steel tank. The inner wall of the tank can be coated with epoxy coating or lined with rubber for corrosion protection according to user requirements.

4. Fine filtration The fine filter
adopts a new type of polypropylene ultra-fiber meltblown filter element or wire wound filter element as the filter material. According to the filter pore size of different precisions, it can intercept particles of different particle sizes, so as to achieve the purpose of filtration.
Filter materials can be divided into wire wound filter elements, melt-blown filter elements, sintered filter tubes, etc. Different filter materials have different filtration pore sizes. Precision filters are a kind of filtration between sand filtration and ultrafiltration. The filtration pore size is generally In the range of 0.01-120μm, the precision filter can remove suspended solids and colloidal substances in water. 
Precision filters are widely used in the pretreatment process of food, medicine, electronics, chemistry, petroleum and other industries. The precision filter has the characteristics of high filtration precision, small filtration resistance, large water flux, acid and alkali resistance, etc., and the precision filter produced by our company is low in price and low in operating costs.
The precision filters produced by our company can be divided into plexiglass shells and stainless steel shells according to the shell material; filter elements with different precisions can be used according to the requirements of users.

5. Ultrafiltration, Microfiltration
Ultrafiltration and microfiltration belong to the pressure-driven membrane process family, which fills the gap between reverse osmosis, nanofiltration and ordinary filtration in terms of separation range. They selectively separate substances through the microporous structure on the membrane surface, so as to achieve the purpose of separation, concentration or purification between large and small molecules.
The pore diameter of the microfiltration membrane is in the range of 0.08-10 μm, and the pore size distribution of the membrane presents a spectrum with different widths. The pore size of the ultrafiltration membrane is determined according to the molecular weight that can be cut off, and it can be divided into four types: 6,000, 20,000, 50,000, and 100,000.
Ultrafiltration can be used alone or in combination with other processes, and is suitable for various production processes for separation, concentration and purification. It can be used for the pretreatment of pure water and ultra-pure water for electronics, medicine, food and other industries; purification and sterilization of beverages, mineral water and drinking water; clarification and filtration of wine, vinegar, soy sauce and other seasonings.
The application of microfiltration is generally in the terminal treatment of pure water and high-purity water processes, mainly for the retention of fine particles and bacteria in water, and can also be used as a filter material for respirator. 
Device parameters