With the advent of summer, swimming is undoubtedly a cool, comfortable, healthy and pleasant way to cool off the heat. However, as the number of swimmers increases sharply, many unqualified swimming pools are found every year by health supervision agencies in various places. The water quality is worrying. Today, the editor will briefly explain some common knowledge about swimming pool water sanitation.

It is not difficult to find from the exposure test results that there are four main reasons for unqualified venues. The total number of bacteria, PH, urea, free residual chlorine. Then the editor will give you popular science what causes these problems.
Let's start with free residual chlorine.
Free residual chlorine is the main disinfectant for swimming pool water. It can quickly kill bacteria in swimming pool water. If the free residual chlorine content in swimming pool water is low, it will inevitably lead to insufficient disinfection capacity and lead to excessive bacteria. But the free residual chlorine should not be too high, too high will cause burns to the eyes and respiratory tract of the human body, sensitive skin will cause allergies, and even lead to chlorine poisoning and fever and other symptoms. The national swimming pool stipulates that the free residual chlorine content should be kept between 0.3 and 1.0 mg/l. New standard limit in 2019:

Swimming free residual chlorine has the characteristics of fast volatilization. If the swimming pool does not have a dedicated water quality inspector to conduct real-time detection every hour and hour, the uncertain factors of the venue flow will cause the free residual chlorine to be too high or too low.
Secondly, the main factor affecting water quality is urea.
The national standard for urea content in swimming pool water is ≤3.5mg/l. The urea in swimming pool water mainly comes from human body secretions such as sweat and saliva. Urea will not be dissolved, it can only be diluted by changing the water. The water exchange rate stipulated by the health department is not less than 30 liters of water per person per day. The reason for the unqualified urea in the water quality test is simple, that is, the amount of water changed is not enough.
Based on the daily reception volume of 200 people in a swimming pool venue and the water exchange volume of 50L per person, the price of tap water is calculated at the price of 16.5 yuan per square meter in the third step. 200 people*50L*0.0165*30 days=4950 yuan. A summer vacation for 2 months, the cost of just changing the water is 10,000 yuan. So... needless to say...
The third major factor is the total number of bacteria.
The total number of bacteria is mostly caused by insufficient disinfection ability, such as the use of cheap disinfectants, and the bacteria have also produced anti-disinfectant resistance without changing the water for a long time. Coupled with the reluctance to invest in the installation of an online water quality detector, and the inadequate monitoring of PH and ORP, the total number of bacteria will exceed the standard. Imagine swimming in a pool with excessive bacteria...

The last major factor is the PH value.
Everyone should know the pH, that is, the pH is too high to become alkaline, and too low to become acidic. Needless to say, swimming in acidic or alkaline water can damage the skin. In fact, the PH value has a more important function, that is, its level affects the disinfection ability of the water. To put it simply, the disinfection ability of free residual chlorine with a pH between 7.2 and 7.6 is particularly powerful.
In fact, what I will introduce to you today is just a simple fur. The water quality safety problem is a combination of PH, ORP, free residual chlorine, chemical residual chlorine, urea, cyanuric acid, swimming pool circulation methods, filtration equipment and many other factors. considerate.
However, if you want to solve the problem of swimming pool water quality safety, it is actually very simple, just install a water quality monitor. Swimming pool owners use the data monitored by the swimming pool water quality monitor as the basis for water quality monitoring. On this basis, formulating a suitable disinfection plan to maintain the health and stability of the water quality is the main function of the swimming pool water quality monitor.

Pool owners can ensure that the water volume, temperature, and water quality of the pool are qualified by real-time monitoring of the main indicators of the water quality of the pool, so as to effectively ensure the health of the swimmers. Especially now it is the midsummer season, and swimming venues are experiencing peak passenger flow almost every day. Real-time monitoring of water quality is particularly important.
The following editor will introduce to you the high-quality water quality monitor and dosing system of AQUA.
1. AQUA networked water quality monitor
The AQUA networked water quality monitor has a fresh and bright appearance and a small size. It is suitable for controlling the ORP and PH values of household and commercial swimming pools and SPA pools. It can be displayed on the computer in full screen, or it can be screened by a third party.

- Operating environment: -20～60℃
- Relative humidity: 0～90% non-condensing
- Data display: 16 letters*4 industrial LCD screen
- Operation keyboard: 9 keys
- Measuring range: PH: 0.00～14.00 (accuracy +-0.1PH); ORP: +-2000mV (accuracy +-1mV)
- Output interface: PH dosing output, ORP dosing output, alarm output

2. AQUA residual chlorine multifunctional water quality monitor
The AQUA residual chlorine multifunctional water quality monitor is imported from Italy. It is a swimming pool water quality monitoring system used to control the residual chlorine content, PH value and temperature of pool water such as swimming pools and SPA pools.

--PH measurement range: 0～14; resolution ±0.01
--CL measurement range: 0～200PPM; resolution ±0.01; accuracy 1%
--Temperature measurement PT100; range: 0～100℃; resolution: 1℃; accuracy 1%
- Power: 15W; protection level: IP65
--Working environment temperature: 0～40℃; relative humidity 0～95% (non-condensing)

3.AQUA electromagnetic metering pump

Model: AC-10, AC-20, AC-60

AQUA electromagnetic metering pump (also known as: automatic dosing pump) is an electromagnetic metering pump based on microprocessor control. The diaphragm is made of pure solid PTFE material. It can be used for a long time, is compatible with most chemicals, and can be displayed digitally. Flow rate, simple operation and stable operation.
--With manual suction valve;
--Waterproof rating: IP65;
-Equipped with a warning light, when the pump stops working, the red warning LED light turns on.
The AQUA intelligent water quality monitoring system can view the monitored results in real-time on-site. There is no need to go to the site to take samples. It is convenient for the health supervision department and swimming pool owners to avoid running around, monitor the water quality at any time, and control the dosing system to automatically dosing and balance the water quality, which greatly saves later maintenance fees. It has been widely praised by customers since it was put on the market. Not only does it have excellent performance, high quality and low price, but also peace of mind after sales. What are you waiting for~