What are the better treatment methods for swimming pool water?

Swimming pools are generally disinfected with "strong chlorine essence", that is, bleaching powder, and of course, sodium chlorate generators are also used. But there will also be water turning green, yellow and black. Let me talk about the manual processing method. ★★★★★★★★ Guangzhou Ouya Swimming Pool Equipment Company answers for you ★★★★★★ Greening: In general, turning green means that moss appears underwater. Usually we use copper sulfate to prevent it, but if the water stays in the shadow for a long time, or the weather is cloudy for a long time, it will suddenly turn green. At this time, you may be deceived. Don't be afraid, the treatment is actually very simple. First, brush it with water. Brush it, then put strong chlorine essence in proportion. In fact, it can also be put in proportion to the area of green water. As long as the circulating medicine is not prescribed, it will not disperse. After adding strong chlorine essence, put copper sulfate. {Don't mix, it will explode} If the two drugs are not mixed in water for more than two hours, the water will turn milky white. Using the above method, it is OK to do underwater vacuum cleaning after 12 hours. Usually it is rust, or the sand box needs backwashing, but the water is yellow and needs to be treated. The treatment method is to add aluminum sulfate in proportion, that is, industrial alum, and then add strong chlorine essence after two hours, 12 hours, and then do underwater vacuum cleaning. Or add water wall cleaning agent, and open the sand box for circulating filtration. Blacking: that is, after adding fresh water, circulating filtration is not started, or the sand tank is too dirty. The treatment method immediately starts circulating filtration. After 8 hours, aluminum sulfate, namely industrial alum, is added in proportion, and after 2 hours, strong chlorine essence is added. /kloc-after 0/2 hours, underwater vacuum cleaning can be done. Most of the water in the swimming pool is tap water, which was polluted by the pipeline during pipeline transportation. In addition, the swimming pools in our company's clubs are all open-air, and a large number of swimmers swim in the water every day. People's skin will bring a lot of bacteria and viruses into the water, and dust in the air will easily fall into the swimming pool, so the water in the swimming pool must be purified to ensure the health of swimmers. The purification treatment of swimming pool water generally adopts the following steps: coagulation, pool suction, clarification, disinfection, and circulating filtration coagulation: coagulants such as aluminum salts, iron salts, polymers and other impurities in the water are flocculated and bridged to generate large-particle sediments, which are then removed by suction filtration. Clarification: the large particles formed by coagulant are statically separated in the swimming pool, and the sediment sinks to the bottom of the pool, and the upper layer gets clarified water. Suction pool: the sediment settled at the bottom of the swimming pool is removed by a special swimming pool suction machine. Disinfection: add disinfectant to kill bacteria, viruses and algae in water. Circulating filtration: The treated water will flow through a device filled with quartz sand, activated carbon or other special filtering materials through a pump to intercept the residual impurities in the water and further purify the water. Generally, the methods of water treatment and pesticide application in swimming pools are: (1) to stop and prevent the growth of moss: put copper sulfate at a dosage of 2~3Kg per 1000m3 of water, and put it 1~2 times a month (or use it when insects or moss are found). Copper sulfate, also known as alum, is an algaecide. It is a blue asymmetric triclinic crystal or powder, which is easily soluble in water, can kill and resist the growth of microorganisms, and can adjust the pond water to seawater-like blue. After adding copper sulfate for 2 hours, the following operations were carried out: (2) Adjusting the PH value. There are two kinds of drugs to adjust PH value: sodium carbonate (soda), white powder or fine particles, which are soluble in water and alkaline. When the PH value is low, the pH value will increase by about 1 degree, 1m3 water 15g. Hydrochloric acid, with strong acidity, can be put in 5 ~ 1000 kg per 1000m3 when the PH value is above 8.2. The PH value of pond water is 7.5 ~ 8.0, which is suitable. (3) Sterilization and disinfection: swimming pool water disinfection drugs such as swimming pool disinfection tablets and swimming pool disinfection powder. Broad-spectrum sterilization, safety, reliability and convenient use. Stable properties, long validity period and long stability time of aqueous solution. With strong decontamination ability, it is a new generation of efficient and ideal organochlorine disinfectant, which is suitable for all kinds of organic pollutants. (4) polyaluminum chloride (PAC) is precipitated at the dosage of 1000m35~ 10Kg. After put into use, open the circulation system for half an hour, then let it stand for 6-8 hours and vacuum it. (5) vacuumizing after the above procedures are completed. Note: During step 1~3, the circulation system should be turned on to make the drug evenly dispersed in the water. If there is no circulation system, every effort should be made to make it uniform. The conventional five-step method of swimming pool water quality management is 1. Controlling bacterial and viral pollution In order to control harmful bacterial and viral pollution, disinfectants must be reasonably added to the pool water. For domestic users, the most commonly used disinfectants are bromine and its compounds, chlorine and its compounds. Under special circumstances, excessive sodium hypochlorite (which can be replaced by calcium hypochlorite) or calcium hypochlorite can be added to the pool water at one time to form a higher chlorine concentration, which can inhibit the growth of algae and reduce the unpleasant smell of chloroform, and at the same time destroy the gathered organic pollutants. In addition, by introducing excessive chlorine at one time, the chlorine concentration in the pond water can reach about 10mg/L, which can effectively prevent the reproduction of bacteria and algae. Family swimming pool can be done once a week. 2. Prevent the growth and reproduction of algae. Algae are tiny plants with hundreds of different species. Algae can multiply rapidly in water. First, it will consume carbon dioxide dissolved in water, which will lead to a rapid rise in pH value. Then, as the dead algae consume oxygen in the water, the clear pool water will become an altar of stagnant water within one day. Spores, lawns and soil erosion in the air will bring algae into the water, which often happens after heavy rain, especially when the water temperature is high. Usually, when there is enough residual chlorine in the water, algae reproduction can be effectively inhibited. The special copper sulfate algaecide is soluble in water, which can inhibit the growth of algae and make the water blue. It is worth mentioning that don't take a bath in the family swimming pool to avoid serious water pollution. 3. Adjust the hardness of water. Hard water means that the concentration of calcium ion in water exceeds 250mg/L and the alkalinity is higher than150 mg/L. The pH value of hard water is relatively stable, but it should not be stabilized by increasing the hardness of water. For hard water source, a water softener should be set at the water supply port for pretreatment. The concentration of calcium carbonate in soft water is less than 50 mg/L or calcium chloride is less than 30 mg/L. It is difficult to keep the pH value of soft water stable. Using calcium hypochlorite as disinfectant is helpful to improve the hardness of water. The hardness of water should be moderate. If it is too high, aggregate will appear on the pool wall; If it is too low, it will erode the mortar of the pool wall. 4. In order to keep the pond water transparent and clean, the index of total soluble solids (TDS) can be used for reaction. TDS refers to charged chemicals that will accumulate in the pool water, especially when the pool water evaporates or not enough fresh make-up water is added. This substance is hard to see with naked eyes, but because of its conductivity, it will corrode all parts of the swimming pool, such as pumps, pipes, filters and so on. These substances usually exist in the form of chloride or sulfate: long-term use of sodium hypochlorite as disinfectant will lead to chloride accumulation; Adding aluminum sulfate and sodium bisulfate regularly will lead to an increase in sulfate concentration. Regular backwashing and timely replenishment of fresh water are the best methods to control TDS. 5. The pH value of the stable pool water reflects the concentration of H+ or OH- in the pool water, and the pH value of the pool water specified in the Hygienic Standard for Water Quality of Artificial Swimming Pools ranges from 6.5 to 8.5. In order to ensure the reasonable operation of the swimming pool, users of the swimming pool should pay close attention to whether this index is up to standard, and the pH of water can be measured by simple test paper. In order to stabilize the pH value of the pond water, it is necessary to add special stabilizers to keep the pH value of the pond water within a reasonable range. At the same time, we should pay attention to another index closely related to pH: total alkalinity. The total alkalinity reflects the difficulty of pH change in water. If the total alkalinity is lower than 80mg/L, the stability of pH is not enough and it is easy to fluctuate. When the total alkalinity is higher than 200mg/L, the stability of pH is too high to be adjusted. The pH value of the pool water should be reasonable, stable and adjustable without excessive fluctuation, so the total alkalinity should be kept within a reasonable range. In addition, high alkalinity and high pH value will lead to water turbidity and precipitate formation; Too low alkalinity will corrode the equipment and bring discomfort to swimmers. The small swimming pool has a complete swimming pool water treatment system, that is, it is equipped with facilities such as filtration, disinfection and sewage suction machine. The key to daily maintenance of family swimming pool is reasonable water quality management. It is an effective method for users to master certain professional knowledge and pay close attention to important water quality indicators.