Quartz sand filter
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Introduction to quartz sand filter
Quartz sand filter is a traditional water treatment equipment, it uses quartz sand as a filter medium, through physical interception, precipitation, contact condensation and other effects, effectively remove the suspended matter in the water, colloids, some organic matter and some microorganisms, so as to achieve the purpose of water purification, usually can remove diameter greater than 20-50 microns of particulate matter.
Quartz sand filter composition
Quartz sand filter is usually composed of filter material layer, support layer, filter housing, water distribution system, water collection system, backwash system and control system. The filter material layer is the core of filtration, which is filled with quartz sand of different particle sizes. The support layer is used to fix the filter material and maintain the stability of the filter layer; The shell is usually made of stainless steel, carbon steel or glass fiber reinforced plastic and lined with anti-corrosion materials; Water distribution system to ensure uniform distribution of raw water; The water collection system collects filtered clean water; The backwash system is used to clean the filter material and restore the filtration performance. The control system automates operations such as backwashing.
Quartz sand filter for the industry
As a classic water treatment equipment, quartz sand filter has a wide range of application, covering many fields such as industry, agriculture, municipal and life. The following are the main application areas of quartz sand filters:
1. Industrial water pretreatment: In industrial production, quartz sand filter is used to remove suspended matter, organic matter, colloids and other impurities in the water source, to provide high-quality pretreatment water for the subsequent reverse osmosis, ion exchange, electrodialysis and other deep water treatment processes, suitable for power, chemical, steel, textile, paper, food processing and other industries.
2. Drinking water treatment: In the drinking water treatment of urban water supply systems, communities, residential areas, etc., quartz sand filters can effectively reduce the turbidity of water, remove suspended particles in water, and provide residents with cleaner and safer drinking water.
3. Wastewater treatment: In the process of industrial wastewater and urban sewage treatment, quartz sand filter, as a primary or intermediate treatment unit, can effectively remove suspended solids and some organic matter in the water, creating favorable conditions for subsequent biological treatment or advanced treatment.
4. Circulating cooling water treatment: In the industrial cooling water system, the quartz sand filter is used to remove the suspended matter in the circulating water, reduce the corrosion and scaling of the equipment, extend the service life of the system and ensure the efficient operation of the equipment.
5. Swimming pool water treatment: In the swimming pool circulating water purification system, quartz sand filter is used to remove suspended matter, algae, etc. in the water, keep the water clean and transparent, and reduce the use of disinfectants.
6. Agricultural irrigation: In the agricultural irrigation system, quartz sand filter can remove sediment and impurities in the water source, protect irrigation equipment, reduce the blockage of irrigation pipes, and ensure the quality of irrigation water.
7. Groundwater and well water treatment: For groundwater or well water containing more sediment and impurities, quartz sand filters can effectively purify, improve water quality, and meet the standards of life or industrial use.
8. Special industry water treatment: such as in semiconductor, electronics, medicine and other industries, quartz sand filter as a pretreatment unit, for the preparation of ultra-pure water to provide the necessary primary purification, to ensure the water quality requirements of the subsequent process.
Technical principle of
When the quartz sand filter is working, the raw water to be treated enters from the top of the filter and flows through the quartz sand layer of different particle sizes laid from top to bottom, such as coarse sand, medium sand and fine sand. Due to its good mechanical strength and stable chemical properties, quartz sand can effectively intercept larger particulate matter in the water and remove smaller suspended matter through physical adsorption. In the filtration process, the impurities in the water are trapped on the surface or inside the filter layer, and the purified water flows out from the bottom.
The production process of
Production of equipment
Capacity and size
|
序号 |
Tank type |
Flow rate |
Tank size（m） |
thickness（mm） |
stress(MPa) |
|
|
diameter(Φ) |
Altitude(H) |
|||||
|
1 |
WTY-TLGL-0.3 |
0.3 |
0.20 |
1.20 |
1.2 |
0.6MPa |
|
2 |
WTY-TLGL-0.5 |
0.5 |
0.25 |
1.20 |
1.2 |
0.6MPa |
|
3 |
WTY-TLGL-1.0 |
1.5 |
0.30 |
1.65 |
2.0 |
0.8MPa |
|
4 |
WTY-TLGL-2.0 |
2 |
0.35 |
1.65 |
2.0 |
0.8MPa |
|
5 |
WTY-TLGL-4.0 |
4.5 |
0.50 |
1.65 |
2.0 |
0.8MPa |
|
6 |
WTY-TLGL-5.0 |
6.0 |
0.60 |
1.85 |
2.0 |
0.8MPa |
|
7 |
WTY-TLGL-10.0 |
10 |
0.75 |
1.85 |
2.0 |
0.8MPa |
|
8 |
WTY-TLGL-15.0 |
15 |
0.90 |
1.85 |
4.0 |
0.8MPa |
|
9 |
WTY-TLGL-20.0 |
20 |
1.10 |
2.40 |
4.0 |
0.8MPa |
|
10 |
WTY-TLGL-25.0 |
25 |
1.20 |
2.40 |
4.0 |
0.8MPa |
Chart of effect chart
Advantages and characteristics of quartz sand filter
Quartz sand filter, as a widely used water treatment equipment, has the following significant characteristics:
1. Efficient filtration: Quartz sand filter can effectively remove suspended matter, organic matter, colloids, microorganisms and some heavy metal ions in water, improve the clarity of water quality, reduce turbidity, and ensure the filtration effect.
2. Multi-layer filter media: Usually using multiple layers of different particle size quartz sand packing, forming a gradient filter layer, large particles are intercepted in the upper layer, fine particles are captured in the lower layer of finer sand, to achieve efficient hierarchical filtration.
3. Small pressure loss: a reasonably designed quartz sand filter has a low pressure loss, which means that while ensuring the filtration effect, it can reduce energy consumption and improve the overall efficiency of the system.
4. Large flow and high precision filtration: Compared with traditional filters, quartz sand filters can achieve high filtration accuracy while ensuring large flow, which is suitable for water treatment scenarios with different needs.
5. Modular design: The system adopts modular design, which can flexibly configure the number of filter units according to the actual needs, adapt to the processing needs of different scales, and facilitate installation and maintenance.
6. Automatic backwashing function: Equipped with automatic control backwashing system, according to the time, pressure difference and other parameters automatically start the backwashing process, without manual intervention, to ensure continuous and efficient filtration performance. The backwash process is simple and does not require a backwash pump, saving energy.
7. Durability and corrosion resistance: Quartz sand itself has good chemical stability, acid and alkali corrosion resistance, not easy to wear, long life of filter material, reducing maintenance and replacement costs.
8. Environmental protection: Quartz sand as a natural material, non-toxic and harmless, the use of the process does not produce secondary pollution, in line with environmental requirements.
9. Widely used: suitable for municipal drinking water treatment, industrial water pretreatment, circulating cooling water treatment, swimming pool water treatment, wastewater treatment and other fields.
10. Easy maintenance: simple daily maintenance, mainly involving regular backwashing operation and replacement of quartz sand filter material as needed, easy operation and low maintenance cost.
In summary, quartz sand filter by virtue of its high efficiency, stability, easy maintenance, energy saving and environmental protection advantages, in the field of water treatment occupies an important position, is an indispensable part of the water treatment project.
Frequently Asked Questions
Q: What is the filtration accuracy of quartz sand filter?
A: The filtration accuracy mainly depends on the particle size of quartz sand. The common particle size range is between 0.5 and 1.2 mm, which can effectively remove suspended matter and particles larger than 10 microns.
Q: How to determine whether the quartz sand filter needs backwashing?
A: When the filter pressure difference is observed to increase or the effluent flow rate is significantly reduced, backwashing is required to remove the trapped contaminants. Periodically checking and recording differential pressure data can help determine the frequency of backwashing.
Q: Can quartz sand filter remove all microorganisms?
A: Quartz sand filter is mainly for larger particles of suspended matter filtration, and can not effectively remove all microorganisms. For the removal of microorganisms, a combination of chlorine disinfection or other specialized microbial filtration equipment is usually required.
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