Small Filtration Resistance Quartz Sand Filter

The small filtration resistance quartz sand filter is a kind of water treatment equipment. It uses quartz sand as a filter medium to remove impurities in water. The main function of quartz sand filter is to filter out suspended solids, colloids, metal ions, organic matter and other impurities in water. The small filtration resistance quartz sand filter has the advantages of small filtration resistance, large specific surface area, strong acid and alkali resistance, and good anti-pollution. During the filtration process, the quartz sand filter can automatically form a state of top sparse and bottom density, which is suitable for various operating conditions and ensures the quality of the effluent. At the same time, in the backwashing process, the quartz sand can be filled and dispersed, and the cleaning effect is good.

 

Structure

- Filter tanks. Usually made of stainless steel or carbon steel and filled with quartz sand.

- Quartz sand layer. It is composed of quartz sand of different particle sizes, forming a hierarchical structure of top fine and bottom coarse, which helps to improve filtration efficiency and intercept particles of different sizes.

- Backwashing system. Including backwashing water inlet device, discharge device, etc., for cleaning quartz sand.

- Sludge system. Used to remove intercepted sediment and sludge.

- Control system. Can manually or automatically control the operation of the filter, backwash, discharge and other operations.

 

Working process

1. Operation. Raw water enters from the top of the filter and passes down through the quartz sand layer. During this process, suspended solids and impurities in the water are trapped by the quartz sand, and clean water flows out from the bottom of the filter and is then discharged through the outlet pipe.

2. Backwashing. As the filtration proceeds, a large amount of impurities will be trapped in the quartz sand layer, resulting in a decrease in filtration efficiency. At this time, the quartz sand needs to be backwashed to remove the attachments on its surface. Backwashing water enters from the bottom, initializes the quartz sand layer upward, and flushes the trapped impurities out and discharges the filter.

3. Mud discharge. During the backwashing process, some impurities will be discharged from the filter along with the backwashing water flow, but some larger particles will still accumulate at the bottom of the tank and need to be discharged through the mud discharge system regularly.

 

Feature

- The filtration effect is stable and can effectively remove a variety of contaminants.

- Simple structure, easy operation and low maintenance cost.

- High reliability, suitable for continuous operation.

- Customizable, suitable quartz sand particle size and grade can be selected according to different water quality requirements.

 

The small filtration resistance quartz sand filter is widely used in industrial water treatment, swimming pool water treatment, drinking water treatment and other fields, and is an economical and practical water treatment equipment.

 

Parameters

Working pressure	0.05 ~ 1.0 MPa
Working temperature	0 ~ 40°C
Flow	0.5 m3/h ~ 140 m3/h
Control mode	Automatic or manual
Dimension	ф173 ~ ф3800
Filtering speed	8 ~ 20 m/h
Material	Q235 rubber / phenolic epoxy resin / 304, 316L
Backwash strength	12 ~ 15 L/s. m2
Filtering layer resistance	>0.05 MPa
Backwash duration	4 ~ 10 min
Final turbidity	≤3

 

How to improve the filtration efficiency of quartz sand filters?

Improving the filtration efficiency of a quartz sand filter can be achieved by the following methods:

1. Optimize the particle size of quartz sand. Choose the appropriate particle size of quartz sand, usually between 0.5mm and 2.0mm. Reasonable particle size distribution can improve the interception capacity and filtration rate of the filter layer.

2. Improve the level of quartz sand. Through the multi-level ratio of quartz sand, a hierarchical structure of top fine and bottom coarse is formed, which helps to intercept pollutants of different sizes, thereby improving filtration efficiency.

3. Increase the thickness of the filter layer. Appropriately increasing the filling thickness of quartz sand can increase the dirt holding capacity of the filter, prolong the filtration cycle, and reduce the backwashing frequency.

4. Control the quality of the incoming water. Appropriate pretreatment before entering the water, such as precipitation, clarification, etc., can reduce the suspended solids and large particulate matter entering the filter, thereby reducing the burden on the filter and improving the filtration efficiency.

5. Adjust the operating parameters. Set the operating parameters reasonably according to the water quality, such as filtration speed, backwashing intensity and frequency, etc., to ensure the cleanliness and filtration effect of the quartz sand.

6. Strengthen the backwashing operation. Regular and thorough backwashing can effectively remove dirt and impurities on the surface of quartz sand and restore the performance of the filter.

 

How to choose the correct particle size of a quartz sand filter?

When choosing the particle size of the quartz sand filter, the following factors need to be considered:

1. Purpose of filtration. Before determining the particle size of quartz sand, it is first necessary to clarify which pollutants are removed for the main purpose of filtration. For example, if it is mainly to remove larger suspended solids, you can choose quartz sand with a larger particle size; if it is to deal with finer pollutants, you need quartz sand with a smaller particle size.

2. Water quality. Analyze the water quality report of the water to be treated to understand the types and concentrations of pollutants such as suspended solids, colloids, and microorganisms. This will directly affect the choice of quartz sand particle size.

3. Filtration speed. Excessive filtration speed will cause small particle size quartz sand to fail to effectively intercept pollutants, and too low will affect the water flow. The specific value needs to be determined according to the actual situation.

4. Backwashing frequency. Although the smaller particle size of quartz sand can better filter fine particles, it may cause the backwashing frequency to be too high, thus affecting the operating efficiency and economy of the entire system.

 

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