The security of the World Tournament is tight, and it is even more difficult to visit the water treatment center. At least three passes must be passed.
There are two water treatment centers in Dongfang Sports Center, which are located on the first basement level of "Magnolia Bridge" and "Moon Bay". With the permission of the organizing committee, the reporter went to the Magnolia Bridge for a site visit.
Enter the venue, first verify, then turn to the underground space. Despite the leadership of Xing Gendi, a staff member of the operation department of the World Tournament Stadium, the reporter still felt that the road to the water treatment center, "Nine Curves and Eighteen Bends", looked like a "maze." On the way, three security personnel were waiting at the critical turn, and they had to wear special documents, otherwise they could not pass. We finally reached the gate of the water treatment center. At first glance, two armed armed policemen at the door, plus a security guard, were guarded by a total of three people, which was called "joint duty". If you want to enter the door, you must register one by one with your credentials. The reporter saw on the registration form that even if the staff entered, there was no exception.
Drink directly
Pushing the door in, there are several huge iron cans and dense pipes. Xing Gendi told reporters that the water in the swimming pool is purified through them. There are four basic processes: diatomite filtration, ozone disinfection, activated carbon adsorption, and heating. The material used for filtration is not ordinary quartz sand, but diatomaceous earth. It was originally used to make beer, and using diatomite to filter water is currently the most advanced technology in the world. In addition, through the double disinfection of ozone and bleach, this water is no longer ordinary water. "Unexpectedly, the water in the swimming pool is drinkable." Xing Gendi introduced that many of them have tried this. "In terms of water purity, it completely meets the standard of direct drinking water. The water at the Shanghai Qingcaosha Reservoir is also drinkable when it leaves the factory. Its turbidity is about 0.1, and ours is between 0.05 and 0.07. It ’s cleaner than it. ”But he added,“ Of course, in terms of taste, there is a lot of chlorine in the water here, but this is good for health. ”In terms of capacity, the water used in the diving pool is 4800 tons, swimming pool is 3800 tons, so some people joked, "The swimming pool of the World Tournament is filled with thousands of tons of" mountain springs. " Only "purity" is required.
The FINA rules that the pH value of water in the swimming pool is between 7 and 7.8, and acidity is bad for athletes' skin. The water in the swimming pool of the World Tournament Swimming Pool and Diving Hall is generally maintained at about 7.5. While filtering, the water treatment center will heat the water. "The internationally accepted standard is 26 degrees Celsius, and it floats up and down by 1 degree Celsius. We set it here as 26 degrees Celsius, and float 0.3 degrees Celsius to 0.5 degrees Celsius."
Oriental Sports Center has a total of 3 sets of water treatment equipment, which can be said to be "baby". The two sets located on the first floor of the “Magnolia Bridge” are all imported from the United States with a cost of 15.6 million yuan; outdoor diving pools are generally only used in June, July, and August, so from the perspective of cost savings; It is made in Beijing. The three sets add up to a total price of about 18 million yuan.
After the World Tour, the Oriental Sports Center will also host a series of domestic competitions or world competitions. These sets of equipment are still very useful. On days when there is no competition, the swimming pool will also be open to ordinary people. In the words of relevant organizing committee members, "In the future, ordinary citizens will also have the opportunity to enjoy the highest standard of swimming pool water."
