Swimming pool water
Recycling water purification and disinfection equipment
1.The swimming pool must be equipped with circulating water purification and disinfection equipment, and can meet the requirements of water quality treatment. Water quality circulation purification and disinfection equipment for swimming places should be kept complete and intact, regular inspection and maintenance system should be established, regular inspection, maintenance and repair should be done well and records should be made. If problems are found, they should be repaired in time, and emergency measures should be taken to ensure the normal operation of all kinds of facilities and equipment and keep them in good condition.
- The selection of circulating water purification and disinfection equipment shall meet the following requirements:
(1) The equipment is simple, safe and reliable, easy to operate and maintain;
(2) The measurement device is accurate, flexible and adjustable;
(3) The feeding system can be controlled automatically and is safe and reliable;
(4) At least one set of spare chlorine dispenser should be provided. The chlorine dispenser should have a stable and uninterrupted water source with stable pressure. The operation and stop of the chlorine dispenser should be interlocked with the operation and stop of the circulating water pump.
Disinfection of swimming pool water
- The selection of disinfectants shall meet the following requirements:
(1) Strong sterilization and disinfection ability, and has continuous sterilization function;
(2) Do not cause water and environmental pollution, do not change the pool water quality;
(3) no stimulation or little stimulation to the human body;
(4) Small corrosion of building structures, equipment and pipelines.
- The water in the swimming pool should be disinfected with chlorine disinfectant.
At present, the chlorine disinfectants used in our swimming pool are: liquid chlorine, bleaching powder, bleaching water, strong chlorine (TCCA) and so on. Bleaching powder because of residue, blocked pipes, affect water quality, is gradually eliminated. The chlorine content of drift water is extremely unstable, and its effective chlorine will gradually decrease with the influence of environment, temperature, humidity, light and storage time. The use of liquid chlorine disinfection should prevent leakage measures, including water treatment room should be far away from the swimming pool and closed, room with emergency alarm device; Liquid chlorine should be automatically added in vacuum mode, and the device should be set up for the full mixing and contact of chlorine and pool water; Due to the conjugated group, TCCA gradually decomposes and releases hypochlorous acid in water. The cyanuric acid left behind has a stabilizing effect on the effective chlorine in water. It’s not toxic and it’s fairly stable. In recent years, many swimming pools in China have used TCCA as a disinfectant for swimming pool water.
- Ozone, ultraviolet or other disinfection methods may be used where conditions and needs permit. When ozone or ultraviolet disinfection is used, chlorine disinfection should also be supplemented to maintain the continuity of disinfection.
- The amount of chlorine added to the swimming pool water (including the new water continuously supplied by the children’s wading pool) should be calculated as the free residual chlorine in the pool water is 0.3-0.5mg/L. The amount of chlorine added to the water in the foot immersion disinfection pool should be calculated as the free residual chlorine in the pool water is 5-10mg/L. When the swimming place is open, the residual chlorine in the swimming pool should be measured regularly and recorded. If possible, the residual chlorine should be measured every 2 hours when the indoor swimming place is open. Residual chlorine should be measured every hour when outdoor swimming places are open.
In order to prevent the growth of algae in the artificial swimming pool, add 0.25-0.5mg/L copper sulfate in the pool water (2-3kg per 1000m3 water), the maximum dosage of algae should not exceed 1.0mg/L, and it is better to put 1-2 times a month.
Disinfection of swimming places
(I) Cleaning, scrubbing or washing outside the swimming pool, poolside walkway and sanitation facilities shall be carried out once at the beginning and after each class. When contamination is found, use a concentration of 250-500mg/L chlorine-containing disinfectant spray or wipe disinfection, and then scrub with water. Emergency rooms should be cleaned and disinfected regularly.
(2) The shower room should be washed regularly, and the floor can be regularly disinfected with 500mg/L chlorine-containing disinfectant.
(3) The locker should be cleaned and disinfected after the end of opening every day. Spray or wipe the locker with chlorine-containing disinfectant with a concentration of 250-500mg/L, and then scrub it with water.
(4) Public toilets (toilets) and dustbins (buckets) should be cleaned every day and disinfected with 500mg/L chlorine-containing disinfectant on a regular basis.
(5) The centralized air conditioning system shall be cleaned and disinfected regularly in strict accordance with the requirements of the Administrative Measures for Centralized Air Conditioning and Ventilation Systems in Public Places. Other drinking water, disinfection, rescue facilities and equipment should be cleaned and disinfected regularly.
Disinfection of public goods and appliances
(1) Public articles and appliances used by swimmers in swimming places (including slippers, tea sets, etc.) should be disinfected with one replacement by one guest.
(2) Cleaning and disinfection of slippers: special cleaning room or area for slippers should be set up.
- Set two decontamination pools or decontamination buckets, equipped with rubber gloves, disinfectant, water, etc.
- Cleaning: First clean the slippers with water or dishwashing liquid.
- Over water: Rinse your slippers with clean water in a sink or bucket.
- Disinfection: In the medicine pool or medicine bucket, fully soak the slippers in the medicine liquid, the concentration of the medicine liquid and soaking time must be strictly operated according to the drug instructions. When chlorine-containing disinfectant is used, the effective chlorine content of the soaking solution should be 250-500mg/L, and the soaking time should not be less than 30 minutes;
- Cleaning: Remove the slippers from the disinfectant, rinse them with clean water, remove the residual disinfectant, cool them for 10 to 15 minutes, and place the slippers in a cleaning cabinet or safe box after they dry.
(3) Cleaning and disinfection of utensils: It should be carried out in the special utensils washing room according to the operating rules of utensils washing.
- Decontamination and cleaning: pour the residue and tea in the cup, and then wash the cup with detergent in the washing tank. Rinse the cup with water and pay attention to the mouth.
- Disinfection: In the drug disinfection tank, soak the cup completely in the liquid, the concentration of the liquid and the soaking time must be strictly operated according to the drug instructions. When chlorine-containing disinfectant is used, the effective chlorine content of the soaking solution should be 250mg/l and the soaking time should not be less than 30 minutes; If you use the electronic disinfection cabinet, you can directly decontaminate it and put it in the electronic disinfection cabinet.
- Over water: Rinse the cup with clean water in the sink to remove the residual disinfectant.
- Cleaning: the disinfected cups should be inverted before being placed in the cleaning cabinet. If towels are used as MATS in the cleaning cabinet, the towels must be replaced, cleaned and disinfected regularly.
Precautions
(1) Disinfectants should be purchased from the manufacturer or business unit with complete licenses. An acceptance system should be established and records should be made during the purchase. The inspection certificate and the health license of the manufacturer or the approval document of the health license of the relevant product should be obtained in accordance with the relevant regulations of the State.
(2) Keep the disinfectant sealed in a container with a lid in a ventilated, dry, cold and dark place; The registration system for the entry and exit of disinfectants shall be established, and the name, quantity, place of origin, date of purchase, date of production, shelf life, packaging, and demand for certificates shall be recorded in detail. The disinfectants shall be stored in different categories according to the time of storage.
(3) Wear work clothes, masks and rubber gloves during disinfection to avoid direct contact with skin and mucous membranes. If possible, wear an eye mask during preparation.
