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Help CenterQuartz Sand Filter Tank, Suitable for Swimming Pool Water Treatment and Hot Spring Bathing
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Industry Pain Points and Solutions: In the daily operation of swimming pools, hot springs, and bathing facilities, water quality management has always been a core challenge. Traditional circulating water treatment methods often face problems such as incomplete removal of suspended solids, frequent replacement of filter media, low backwashing efficiency, and high energy consumption, resulting in turbid water quality, bacterial growth, and even the risk of skin allergies or infections. Especially for hot spring bathing, impurities such as mineral deposits, sediment, and hair in the water are more likely to clog pipes, affecting the experience. Henan Boyue Amusement Equipment Co., Ltd. has been deeply involved in the water treatment industry for many years. In response to the above pain points, relying on the independently developed quartz sand filter tank, through optimizing the tank structure, upgrading the water distribution system, and selecting high-precision quartz sand filter media, it has achieved in-depth purification of the water quality in swimming pools and hot spring bathing facilities. This equipment uses the principle of physical filtration. Without the need to add chemical agents, it can efficiently intercept suspended solids, colloids, and some microorganisms in the water. The turbidity of the effluent is stably controlled at ≤1NTU, which significantly reduces the subsequent disinfection burden, prolongs the service life of the filter media, and reduces operation and maintenance costs. The company adopts a one-stop service model, from project planning, design to equipment supply, construction, and after-sales service, ensuring that each set of systems can accurately match the actual needs of customers, making water quality management simple and reliable.
Working Principle and Core Mechanism: The quartz sand filter tank relies on gravity or pressure to drive the water flow through the filter layer. When the water to be treated enters the tank from the water inlet and is evenly distributed through the water distributor, it flows through a certain thickness of the quartz sand filter media layer from top to bottom. Tiny pores are formed between the sand grains in the filter media layer. Through interception, sedimentation, adsorption, and other effects, suspended solids, sediment, algae, and some organic matter in the water are intercepted on the surface and inside of the filter layer. As the filtration progresses, the resistance of the filter layer increases. When the set differential pressure or time is reached, the system automatically or manually starts the backwashing process. During backwashing, the water flow enters from the bottom in the reverse direction, causing the filter media layer to expand and tumble, flushing out the intercepted impurities and discharging them with the drainage water, and then resumes normal filtration. This equipment is equipped with a multi-way valve or an automatic control valve, which can flexibly switch between states such as filtration, backwashing, and forward washing, and is easy to operate.
Product Features and Technical Advantages:
- Efficient Filtration: It uses high-quality natural quartz sand with uniform particle size and a large specific surface area. The filtration accuracy can reach 5 - 10μm, and the turbidity of the effluent is stable, meeting the water quality standards for swimming pools and hot spring bathing.
- Corrosion Resistance and Durability: The tank is made of high-strength fiberglass or stainless steel. The fiberglass tank has excellent corrosion resistance, insulation properties, and the characteristics of light weight and high strength. The stainless steel tank is suitable for scenarios with higher pressure or special water quality, and has a service life of more than 15 years.
- Energy and water conservation: Optimize the water distribution system to ensure uniform water flow and reduce short - circuit phenomena; the backwashing water consumption is low, usually only 1% - 3% of the filtration flow, and the backwashing time is short (about 2 - 5 minutes), effectively reducing the operating cost.
- Automated control: An optional PLC automatic control system can be equipped to achieve timed and differential pressure backwashing, eliminating the need for manual supervision. It is suitable for swimming pools or hot spring resorts that operate continuously for 24 hours.
- Flexible installation: The tank can be installed vertically or horizontally, with a small floor area, suitable for different site conditions. The inlet and outlet are standard flange interfaces, facilitating pipeline connection.
| Parameter item | Specification range | Remarks |
| Tank diameter (mm) | 600, 800, 1000, 1200, 1600, 2000, 2400 | Select the model according to the treatment capacity |
| Tank height (mm) | 1200 - 2800 | Including the head |
| Design working pressure (MPa) | 0.4 - 0.6 | Higher pressure can be customized |
| Filtration area (m²) | 0.28 - 4.52 | Calculated by diameter |
| Filter media layer height (mm) | 600 - 1200 | Commonly 0.8 - 1.2m |
| Filtration speed (m/h) | 8 - 15 | Standard flow rate |
| Backwashing intensity (L/(m²·s)) | 12 - 15 | Expansion rate is about 30% |
| Nominal diameter of water inlet and outlet (mm) | DN50 - DN200 | Flange connection |
Application scenarios: This product is widely applicable to water treatment systems of various indoor and outdoor swimming pools (including standard competition pools, children's pools, infinity pools, etc.), hot spring resorts, SPA centers, sauna and bath centers, water parks, landscape water features, etc. For hot spring bathing, it can effectively remove suspended solids and some mineral deposits in the water. When combined with disinfection equipment, it ensures that the water quality meets the health standards.
Company strength and trust endorsement: Henan Boyue Amusement Equipment Co., Ltd. has many years of industry experience and has provided complete sets of equipment and engineering services for hundreds of water parks, swimming pools, and hot spring projects across the country. The company not only provides high - quality quartz sand filter tanks but also offers full - process services from project planning, feasibility studies, planning and design to equipment production, installation and commissioning, and after - sales maintenance. We understand the water quality characteristics, water volume requirements, and customer budgets of each project. Through personalized scheme design, we ensure accurate equipment selection and stable operation. For example, for hot spring water sources with high turbidity, we will recommend the use of multi - stage filtration or additional pretreatment measures; for peak - load periods in swimming pools, multiple filter tanks can be configured to operate in parallel. All equipment undergoes strict pressure tests and performance inspections before leaving the factory. Free technical support is provided during the warranty period, and rapid response services are still available after the warranty period. Choosing Boyue means choosing professionalism and peace of mind.
Consultation advice: If you are looking for a reliable filtration solution for your swimming pool or hot spring water treatment system, we recommend that you provide specific water quality reports, design flow rates, site dimensions, and usage requirements. Our technical team will formulate a free equipment selection scheme and quotation for you. The selection of quartz sand filter tanks needs to comprehensively consider factors such as filtration speed, filtration area, and backwashing frequency. We can provide detailed process calculation sheets. Welcome to contact us at any time to obtain more product information and successful cases. Let's work together to create a clear and healthy water environment.
FAQ Frequently Asked Questions
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Q: Can the quartz sand filter tank remove bacteria and viruses in the water?
A: Quartz sand filtration mainly relies on physical interception, which can remove suspended solids with a diameter greater than 5 - 10μm and some microorganisms attached to the particles, but it cannot directly kill or remove free bacteria and viruses. Therefore, after filtration, it must be combined with disinfectants (such as chlorine, ozone, ultraviolet rays) for disinfection to meet the health requirements. As a pretreatment step, this equipment can effectively reduce the consumption of disinfectants. -
Q: How to choose between fiberglass and stainless steel for the tank body material?
A: Fiberglass tanks are corrosion-resistant, lightweight, and cost-effective. They are suitable for most swimming pools and spa bath water quality (pH 6.5 - 8.5) and have no risk of electrochemical corrosion. Stainless steel tanks (such as 304 or 316L) have higher strength and are suitable for high-pressure, high-temperature water or water with a high chloride ion content. However, they are more expensive. In spa baths, if the water temperature is high (>50°C) or the water contains sulfur or chloride ions, it is recommended to choose stainless steel. -
Q: What is the backwashing frequency of the filter tank? How to determine if backwashing is needed?
A: The backwashing frequency depends on the influent turbidity, filtration speed, and the dirt-holding capacity of the filter media. Usually, the swimming pool system can be set to backwash automatically every 24 hours, or backwash is triggered when the pressure difference between the inlet and outlet reaches 0.05 - 0.08MPa. Due to the large fluctuations in the water quality of spa baths, backwashing may be required 1 - 2 times a day. It is recommended to install a differential pressure gauge or use time control for timely backwashing to avoid the deterioration of the effluent water quality caused by the clogging of the filter layer. -
Q: How often does the quartz sand filter media need to be replaced?
A: Under normal use conditions, the service life of the quartz sand filter media is about 3 - 5 years. If a large amount of impurities still remain after backwashing, the turbidity of the effluent water increases, or the filter media becomes hardened or broken (the wear rate exceeds 10%), it needs to be replaced. During daily maintenance, the height of the filter media layer should be checked regularly to supplement a small amount of sand particles lost during backwashing. It is recommended to check the condition of the filter media at least once a year. -
Q: Can the equipment be installed outdoors? What protective measures are needed?
A: Yes. Fiberglass tanks have anti-ultraviolet properties, but long-term exposure to sunlight may still accelerate aging. It is recommended to install a sunshade or wrap an insulation layer. Stainless steel tanks need to pay attention to anti-corrosion outdoors, especially in coastal areas. All electrical control boxes should have a waterproof rating (above IP65), and the pipes should take insulation and anti-freezing measures (in northern regions). -
Q: Can the quartz sand tank treat hydrogen sulfide, iron ions, etc. in the spa water?
A: Quartz sand filtration can remove some suspended ferrous sulfide, rust, and other impurities, but its removal effect on dissolved hydrogen sulfide and iron ions is limited. If the spa water contains a high concentration of iron, manganese, or hydrogen sulfide, it is recommended to add pre-treatment steps such as aeration oxidation or manganese sand filtration before filtration. Otherwise, it may cause the clogging of the filter media or the yellowing and odor of the effluent water. Henan Boyue Amusement Equipment Co., Ltd. can provide targeted multi-media filtration solutions. -
Q: Is there a requirement for the installation height of the filter tank? How to match the head of the pump?
A: The filter tank is usually installed on the ground or floor. The height of the water inlet needs to be higher than the outlet of the circulating pump to avoid siphon backflow. The head of the pump needs to overcome the resistance of the tank body, the frictional resistance along the pipeline, and the static water pressure difference. Generally, the recommended head is between 15 - 25 meters. The specific selection can be calculated based on the design flow and the pressure drop curve of the tank body. Henan Boyue Amusement Equipment Co., Ltd. can provide a detailed parameter table for reference. -
Q: Can the equipment achieve automatic backwashing? What additional configurations are required?
A: Yes. The standard configuration of Henan Boyue Amusement Equipment Co., Ltd. includes a manual multi - way valve. If automation is required, you can optionally configure electric or pneumatic valves, a PLC controller, and a differential pressure sensor to achieve automatic backwashing at regular intervals or based on differential pressure. The automatic control system can be integrated into the overall central control platform of the swimming pool to achieve remote monitoring. It is recommended that large - scale projects (such as swimming pools and hot spring spas) adopt automatic control to reduce manual maintenance costs.
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