Large Capacity Manganese Sand Filter

The large capacity manganese sand filter is a filtration device used to remove impurities such as iron and manganese from water. Its working principle is mainly based on oxidation and adsorption processes. In a manganese sand filter, natural manganese sand is usually used as the filter medium. The large capacity manganese sand filter is very effective in treating water with high iron and manganese content.

 

Working principle

The large capacity manganese sand filter works based on the process of oxidation and mechanical filtration. Specifically, its working process can be divided into the following steps:

1. Oxidation

In a manganese sand filter, the iron and manganese ions contained are oxidized first. Usually, these ions are oxidized by dissolved iron (Fe²) and manganese (Mn²) ions under the action of a catalyst (such as manganese sand) to insoluble trivalent iron compounds (Fe²) and manganese dioxide (MnO²).

2. Contact oxidation reaction

The oxidized water continues to flow through the manganese sand filter layer, and a contact oxidation reaction occurs in the filter layer. This means that the contact between the water and the surface of the filter material (manganese sand) contributes to further oxidation reactions and helps remove iron and manganese.

3. Biochemistry

In some cases, microorganisms on the surface of the filter media can also participate in the process of removing iron and manganese. These microorganisms can remove iron and manganese ions as part of the metabolic process.

4. Physical interception and adsorption

In addition to the above chemical and biochemical effects, the manganese sand filter also removes iron and manganese through physical interception and adsorption. The oxidized iron and manganese compounds are captured by the porous structure of the manganese sand filter material, further enhancing the filtration effect.

5. Backwashing

In order to maintain the efficiency of the filter, regular backwashing is necessary. This step can help remove sediments and impurities accumulated on the filter material, thus maintaining the filtration effect of the filter material.

 

Features

The features of the large capacity manganese sand filter include:

1. Efficient iron and manganese removal ability

The manganese sand filter can effectively remove iron and manganese from water and improve water quality.

2. High mechanical strength

As a filter medium, manganese sand has high mechanical strength, is not easy to break, and has a long service life.

3. Good chemical stability

Manganese sand has good chemical stability, acid and alkali resistance, and is not easy to react with other substances, thus ensuring the long-term stable operation of the filter.

4. Strong adaptability

Through reasonable design, the manganese sand filter can adapt to different water quality and operating conditions to achieve adaptive filtration.

5. Easy to backwash

Due to the characteristics of manganese sand, the manganese sand filter can easily remove impurities attached to the filter material during backwashing, thus restoring the filtration effect.

6. Simple operation

The manganese sand filter is easy to operate, easy to maintain, and highly automated.

7. Wide range of applications

The manganese sand filter can be used for the treatment of various water sources such as groundwater, well water, and tap water, and is suitable for homes, factories, communities, and other places.

8. Environmental protection and energy saving

The manganese sand filter does not add any chemicals during the treatment process, resulting in no secondary pollution to the environment, low energy consumption, and good economic and environmental benefits.

 

Parameters

Rated flow	1 ~ 200m³/h
Working pressure	0.75Mpa
Working temperature	5 ~ 50°C
Backwash strength	13 ~ 16L/m2S
Backwash duration	5 ~ 8min
Material	Q235 rubber / phenolic epoxy resin / 304, 316L
Before filtration	Iron ≤15mg/L Manganese ≤3mg/L
After filtration	Iron <0.3mg/L Manganese <0.1mg/L
Voltage	220V, 50Hz
Dimension	ф400 ~ ф3200

 

Application

The application of the large capacity manganese sand filter is very extensive, mainly including the following aspects:

1. Drinking water treatment

In municipal water supply and rural drinking water projects, manganese sand filters are used to remove excess iron and manganese from groundwater and well water to ensure the quality and safety of drinking water.

2. Industrial water treatment

In a variety of industrial processes, such as power, steel, chemical, textile, paper, etc., manganese sand filters are used to treat process water and circulating cooling water to reduce iron and manganese content and prevent pollution and corrosion of equipment and pipelines.

3. Swimming pool water treatment

The water quality of the swimming pool needs to be purified regularly, and the manganese sand filter can effectively remove iron and manganese from the swimming pool water to maintain clear water quality.

4. Agricultural irrigation water treatment

In agricultural irrigation, if the water source contains too much iron or manganese, it will affect the growth of crops. The use of manganese sand filters can reduce the content of iron and manganese in the water source and improve the water quality of farmland irrigation.

5. Groundwater remediation

In the field of groundwater pollution remediation, manganese sand filters can be used to remove heavy metals and other pollutants in groundwater, helping to restore the original quality of groundwater.

6. Household water purification system

In household water purification equipment, small manganese sand filters can be used for water purification devices in kitchens, bathrooms, etc., to improve the quality of household water.

 

How should backwashing operations be performed properly to maintain filtration efficiency?

The backwash operation is to restore the filtration capacity of the filter medium by washing away the suspended solids and sediments accumulated on the surface of the filter material during the filtration process by reverse water flow. Proper execution of the backwash operation is essential to maintain the efficiency of the filter. The following are the general steps of the backwash operation:

1. Stop the water inlet. First, the water inlet valve of the filter needs to be closed to cut off the water supply.

2. Vent. Open the drain valve to drain the remaining water in the filter for backwashing.

3. Start the backwash pump. Use a special backwash pump, or through the gravity flow generated by the high-level water tank, so that the clean water enters from the bottom of the filter and passes up through the filter material layer.

4. Adjust the backwash intensity. The backwash intensity should be large enough to wash away dirt on the surface of the filter material, but not too large to avoid damage to the filter material structure. The backwash intensity can be controlled by adjusting the flow and pressure of the pump.

5. Monitor the backwash process. Observe the backwash effluent. When the effluent becomes clear and there is no turbidity, the backwash can be considered to be over.

6. Stop the backwash pump. After the backwash is complete, close the backwash pump and drain valve.

7. Restart the filtration system. After turning off the backwash pump, reopen the water inlet valve of the filter to allow the water to flow in the normal direction and the filter to return to working condition.

8. Record and evaluate. Record the time, amount and effect of backwashing, and evaluate whether it is necessary to adjust the frequency and intensity of backwashing according to the actual situation.

 

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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· Professional manufacturer with many years' experience

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

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· Focus on customer needs, provide best filtering solution

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· Become a global purification leadership brand

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