What are the swimming pool water circulation filtration systems

The swimming pool water circulation filtration system mainly includes sand tank filtration system, diatomaceous earth filtration system, activated carbon filtration system, membrane filtration system, and ultraviolet disinfection system. These systems purify water quality through physical interception, adsorption, or sterilization to ensure the cleanliness and safety of swimming pool water.

1. Sand cylinder filtration system

The sand cylinder filtration system uses quartz sand as the filtration medium to intercept suspended particles and impurities when water flows through the sand layer. The sand tank filtration system has a simple structure and low maintenance cost, making it suitable for use in small and medium-sized swimming pools. Regular backwashing can remove dirt from the sand layer and maintain the filtering effect. Sand tank filtration has a good filtering effect on larger particles, but its ability to remove small particles and bacteria is limited.

2. Diatomaceous earth filtration system

The diatomaceous earth filtration system uses diatomaceous earth powder as the filtration medium, which can effectively filter out small particles and some bacteria. Diatomaceous earth has high filtration accuracy and clear effluent quality, suitable for swimming pools with high water quality requirements. The system needs to regularly add diatomaceous earth powder and clean the filter elements. The operating cost of diatomaceous earth filtration system is relatively high, but the filtration effect is better than traditional sand tank filtration.

3. Activated carbon filtration system

The activated carbon filtration system mainly uses the adsorption characteristics of activated carbon to remove organic matter, chlorine gas, and odors from water. Activated carbon filtration is usually used as an auxiliary filtration system, in conjunction with other filtration systems. Activated carbon needs to be replaced regularly to maintain its adsorption effect. This system has a significant effect on improving sensory indicators of water quality, but cannot effectively remove suspended particles and microorganisms.

4. Membrane filtration system

The membrane filtration system adopts ultrafiltration or microfiltration membrane technology, which can effectively intercept bacteria, viruses, and small particles. The water quality of membrane filtration effluent is excellent and can meet the standard of direct drinking. The system requires regular chemical cleaning to maintain flux. Membrane filtration systems have high investment and operating costs, making them suitable for high-end swimming pools and water parks.

5. Ultraviolet Disinfection System

The ultraviolet disinfection system destroys the DNA structure of microorganisms through ultraviolet irradiation, achieving the purpose of sterilization and disinfection. UV disinfection does not produce by-products and does not cause secondary pollution to water quality. The system requires regular replacement of ultraviolet lamps to maintain sterilization effectiveness. Ultraviolet disinfection is usually used in conjunction with other filtration systems and cannot remove particulate matter from water. The selection of swimming pool water circulation filtration system should be comprehensively considered based on the size, frequency of use, and water quality requirements of the swimming pool. Regular maintenance and cleaning of filtration equipment are key to ensuring the normal operation of the system. At the same time, attention should be paid to monitoring water quality parameters and maintaining appropriate disinfectant concentrations. Swimmers should take a shower before entering the pool to reduce the introduction of pollutants. Reasonable design of cycle time and water flow rate can help improve filtration efficiency. It is recommended to consult a professional water treatment engineer for system design and maintenance.