These technological means ensure the safety of the water quality of the pool

Intelligent device controls low -voltage current degradation urea

High temperature and heat, many citizens arranged for their own and family members of the heatstroke prevention package. In addition to air -conditioning, watermelon, and cold drinks, swimming in the swimming pool has also become a heat -proof set of many families. Swimming in the swimming pool, the water quality in the swimming pool is the most concerned issue. What technology is the current swimming pool to ensure the safety of water quality in the pool? On July 31, the reporter learned at the Shanxi University Swimming Pavilion that the water treatment technology behind the swimming pool independently developed behind the swimming pool can ensure that the pond water is still clean, clear and safe when the pond water is not changed all year round.

Cui Junfeng, the director of Shanxi University Swimming Museum, introduced to reporters to report to the "brain" of water quality treatment house environmental protection intelligent drug adding devices

Precision flow control, so that the residual chlorine in the pool reaches a dynamic balance

When we arrived at the Shanxi University swimming pool, the workers were working on the top of the swimming pool with photovoltaic boards and solar equipment. "This is a new type of insulation material. After laying, it can effectively prevent the venue from dissipating heat and play a role in energy saving and emission reduction." Cui Junfeng, director of the swimming hall, introduced.

Photovoltaic boards, solar equipment, installation of insulation materials ... In recent years, the managers of Shanxi University swimming pools have made a lot of efforts for energy saving and emission reduction. Among them, the most proud of them is the deep treatment technology hidden behind the venue and independently developed swimming pool water (including the swimming pool intelligent additional drug plus device, degradable urea device in the water in the pool water, degradation of cyanometer in the swimming pool water, swimming pool water treatment load antibacterial material) Essence "The water quality problem of swimming pool has always been a major public health problem that the whole society is concerned about." Cui Junfeng said that in order to ensure water quality, the urea content, temperature, free split chlorine content, pH value, total number of bacteria, turbidity, colonic flora content in the pool water The content of toxic substances must be reached. The most basic is the residual chlorine value.

Many people say that a swimming pool often has a smell of disinfection water. In fact, this is the taste of chlorine gas.

After the swimming pool is disinfected with chlorine, there will be an appropriate amount of chlorine in the water to ensure continuous sterilization capacity. This is the free split chlorine. The free surplus residual chlorine in the pool water should not be too high nor too low. If it is too low, it will lose the ability to sterilize. Too high indicates that adding too much chlorine will have a certain "toxicity" and harm the human body. my country's "Sanitary Standards for Swimming Places" clearly stipulates that the iconic residual residual chlorine in the pool water is controlled at 0.3-0.5 mg / L, which can achieve disinfection effects and will not harm the human body.

"Adding medicines" is the most fundamental way to ensure that the residual chlorine value meets the standard. "When many swimming pools are added to the pool water, they generally adopt the method of manually voting and adding pump pumps. In terms of the time and dosage control, it will be affected by subjective factors (experience, etc.). The phenomenon of not timely or uneven dosage affects the safety and stability of water quality and air quality in the museum. "Professor Chen Anping of Shanxi University Sports College said that this is a problem facing many swimming pools.

In order to make "medicine" more intelligent, in 2005, Chen Anping proposed to develop new technologies. With the support of the Shanxi Provincial Department of Science and Technology, Shanxi University and other units, the R & D team uses the provincial and ministerial research and research funds for 200,000 yuan and invested nearly one million yuan in autonomous investment. On the basis of years of water treatment technology and management experience, it was developed in 2017. Environmental protection intelligent drug adding devices and successfully apply for national patents. "This device fills the gap of the intelligent, safe, and environmentally friendly adding medicines in the world's swimming pool, and is the first in the world industry." Professor Chen Anping said proudly.

Subsequently, Cui Junfeng led the reporter into the water quality treatment room behind the swimming pool. The first small screen that I saw is the intelligent controller in environmentally friendly intelligent drug plus device, that is, the "brain" of environmentally friendly intelligent drug adding device. This "brain" controls the operation of the entire device, including online monitoring, traffic precision controllers, intelligent control systems, and environmental protection adding medicine tanks, so that adding medicines can achieve scientific intelligence.

In order to ensure the accuracy of the surplus chlorine monitoring, the R & D team introduced three sets of surplus chlorine monitoring systems for swimming pools, and monitored the water quality in 24 hours. Add medicine, when to add medicines, and how much. Through these devices, the residual chlorine value can be guaranteed at any time in national standards.

The intelligent controller in the environmental intelligent intelligent add -on device is a set of humanized and rational intelligent control systems designed by R & D personnel after years of data integration. "Through this system, the swimming pool can adjust the control data by self -deploying the five major data modules of the controller according to different factors such as seasons, cycle cycles, and traffic, so as to meet the value required by the drug in real time, and ensure that the residual chlorine value in the pool is stable. "Professor Chen Anping said that this means that whether it is a daily passenger flow of 100 people during the off -season of the swimming pool, or the passenger flow of 1,000 people per day during the peak season, water quality can ensure environmental protection and health.

This patent has been recognized a lot. Many venues have introduced this set of devices, including Tsinghua University Swimming Pavilion, Shenzhen Sports School, Tianjin Hehai Education Park Swimming Pavilion, Dongguan Swimming Management Center, etc.

Swimming pool intelligent adding medicines to make the remaining residue in the pool achieve a dynamic balance.

Low -voltage electrolytic treatment of urea in swimming pool water

In addition to the remaining chlorine, the urea in the pool water is also a problem of a headache for the swimming pool. "Especially in the summer, as the traffic increases, the urea in the pool water will exceed the standard." Cui Junfeng said that the urea in the pool water was brought in by swimmers, mainly from the human sweat. Urea is a nutrients necessary for bacteria and algae growth. Increased urea content in the pool water will promote the growth of bacteria and algae in water, accelerate the deterioration of water, and cause sterilization and algae extinguishing difficulties.

When the urea in the pool water exceeds the standard, it will cause a large accumulation of harmful substances. Swimming in such a water quality environment will cause allergic reactions, itching, tears, sneezing and other symptoms. "The chemical properties of urea are relatively stable, and in the past, it can only be diluted by replenishing new water." Professor Chen Anping explained that according to a standard pool of 50 meters long, 25 meters wide, and 1.8 meters deep The amount of water supplemented by each year needs to reach 40,000 tons to 80,000 tons. "But adding a large amount of new water will cause a significant decrease in the water temperature of the pool. Before injecting the pool, it is necessary to increase the tap water of about 10 ° C to 28 ° C. This process will increase energy costs." Professor Chen Anping said.

In order to effectively reduce the urea content in the pool water, since 2005, Chen Anping led the R & D team of 8 people to start researching the technique of urea in the water containing chlorine pool water with low -pressure current stimulating catalytic methods. "We installed the electrolytic device of the low -voltage DC power supply in the degradation tank, and fill the catalyst of degradable urea between the anode plate of the electrolyte. After the electrolytic and catalyst degradation treatment, it is returned to the swimming pool. "Professor Chen Anping said that while using low -voltage electrolytic, adding active catalysts to solve the problem of long -term urea in existing technology, and low efficiency, and also low efficiency, and also low efficiency, and also low efficiency, and also low efficiency, and also low efficiency, and also, and low efficiency, and low efficiency, and low efficiency, and the efficiency, and the efficiency is low, and the efficiency is low, and the efficiency is low, and the efficiency is low, and the efficiency is low. While degrading urea, it also degrades the harmful organic matter of chloride. In July 2018, this catalytic degradation device was authorized by a practical new type and a invention patent.

The increase in urea content in the pool water will not only cause a large accumulation of harmful substances in chloride, but also combine the active chloride released by the drugs invested in the pool to produce an by -product called cyanometer. Professor Chen Anping introduced that cyanometer will not be automatically decomposed in the pool. As it continues to accumulate, it will also affect water quality and adversely affect human health.

Generally speaking, the drugs that can be selected for swimming pools include sodium chloride, sodium dichlorocyanocyanate, and vassacrisheryonic acid. The latter two can be effective in 60%-90%, and it is easy to transport and store. Focusing on most swimming pools. The data shows that average of 2 tons to 3 tons of disinfection drugs per year.

The large amount of disinfection drugs greatly increased the oleic acid content in the pool water. Treatment of cyanometer is particularly important. At present, several main methods of the water quality treatment of the pool are very effective in eliminating cyanometer, and can only be solved by changing water. To this end, the R & D team once again stimulated the catalytic method with low -voltage current, and at the same time added catalysts that could eliminate cyanometer, and successfully solved this problem. Professor Chen Anping said that at present, the Shanxi University Swimming Pavilion has been using this method to reduce the concentration of cyanometer, and the effect is particularly good.

The load -type antibacterial material can be reused after processing

In addition, the R & D team also developed a long -acting antibacterial material for swimming pool water -load antibacterial materials. "Load antibacterial materials include carriers and active components. This material has the characteristics of small dosage, non -toxic, long -acting, non -irritating, broad -spectrum antibacterial, and reuse after processing This material is added to the swimming pool circulating water treatment device, and the amount of addition is 2 ‰ -6 ‰ of the weight of the swimming pool water. The antibacterial rate can be greatly improved. The rate exceeds 98%.

Today, the Shanxi University swimming pool adopts the deep treatment technology of swimming pools developed by its own team, saving 20,000 to 40,000 tons of water each year, 30,000 to 50,000 cubic meters of natural gas, and saving the cost of disinfection agent 20,000 to 40,000 yuan. Reduce carbon dioxide emissions by 20 tons to 30 tons.

Every year, the Taiyuan Health and Health Comprehensive Law Enforcement Team will conduct swimming pool water hygienic testing on swimming pools in Taiyuan City. The sampling detection indicators include 11 items such as the temperature of the pool water, cyanometer, turbidity, free dehuminating residual chlorine, compliance residual chlorine, pH value, urea, oxidation reduction potential (ORP), the total number of bacteria, colon flora, and ozone. In the past few years, Shanxi University's swimming pool has reached the standard.

Even so, they still make various efforts in the safety and energy conservation and environmental protection of the venue. "This is interest and responsibility. Although there will also be a new 'blockbuster' when they break through a problem, we are not afraid, but we will just meet the difficulties." Professor Chen Anping said with a smile. Reporter Qiao Jingtao Wen/Photo

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