Swimming Pool Water Treatment System

　　System Principles

　　The swimming pool water treatment system operates on the principle of dynamic equilibrium, achieving thorough water purification through a continuous recirculation process. Pool water is collected via the overflow weir and routed to the balancing tank, where it mixes with make-up water before entering the recirculation piping. Driven by the circulation pump, the water passes through a hair trap to remove hair and larger particulate debris; it then flows into an automatic coagulant dosing system. This system uses a precision metering pump to accurately dose aluminum sulfate solution (10% Al₂(SO₄)₃) into the recirculating water, promoting the aggregation of colloidal micro-particles into larger floc-like aggregates, which are subsequently removed by the quartz sand filter. The automatic pH adjustment system compares the signal from the pH sensor with the setpoint; a microcomputer performs a PLD calculation on the deviation and issues a control command, triggering the precision metering pump to inject dilute hydrochloric acid (10% HCl) to maintain the pool water’s pH within the national standard range (pH 7.0–7.8), as specified in the “Swimming Pool Water Quality Standard” (CJ244-2007). Finally, the automatic disinfectant adjustment system uses either a residual chlorine sensor or a redox potential sensor to monitor the pool’s disinfection and sterilization efficacy. The controller then precisely doses sodium hypochlorite disinfectant (5% NaClO) to keep the residual chlorine concentration within the national limit (0.3–0.6 ppm), effectively eliminating various bacteria and completing the purification and disinfection process.

　　System Performance Advantages

　　100% labor savings, 100% pharmaceutical savings, 50–80% thermal energy savings, 50–80% water replenishment savings, and 50–80% electricity consumption savings. Made from a new UPVC food-grade material that is corrosion-resistant and aging-proof, it produces no rusty water, boasts a pristine white appearance, and is aesthetically pleasing—guaranteed for over 30 years of reliable service.

　　System Equipment Composition

　　It consists of a filtration system, flocculants, disinfectants, electric valves, and an automatic control system, among other components.