Pool chemicals
What is happening in your pool water?
- In the past, swimming pools did not have a cleaning system.
- Today's society demands: economy, hygiene, pleasant feeling in the view or use of the pool.
Pool water problems
- The water is polluted by the atmosphere and the bathers. Algae thus grows and turns the water green.
- Wind and rain introduce dust, dirt and leaves into the pool water and make it cloudy.
Troubleshooting
- Maintaining in the water a sufficient amount of residual chlorine that destroys the microorganisms and bacteria that enter it.
- Supplying the pool with a filter, which retains suspended substances in the water, with the help of a pump, which forces the entire mass of water to pass through it.
- There are other cleaning methods such as iodine, bromine, ozone, water ionizers, ultraviolet radiation, but they have an increased cost and can rarely be used exclusively.
The pH
- It has a grading scale from 0 to 14.
- From 0 to 7 water is acidic.
- From 7 to 14 the water is alkaline (or basic).
- At 7 the water is neutral.
- The ideal pH for pool water is from 7,2 to 7,6.
- Below 7,2 the water is corrosive and stings the eyes and nose of bathers, as well as wears the metal parts of the pool.
- Above 7,6 the water takes on a milky appearance due to the calcium and at the same time makes it difficult or even impossible for the residual chlorine to work
The chlorine
- The residual chlorine content of the water must be from 0,5 to 0,8 mg/lt.
- Chlorine acts against microorganisms, bacteria and other unwanted substances that enter the pool water in any way (bathers, wind, rain, etc.).
The filtration
- The pump suctions water from the bottom of the pool (well bottom) and from the surface (skimmers or overflow grate, depending on the construction).
- The filter contains a quantity of sand with a grain size of 0,5mm to 0,7mm depending on the case, through which the water passes, thus retaining the particles present in the pool through the process of filtration.
- When the filter retains a lot of dirt and "clogs", then the filter must be washed by reverse circulation of water through the filter to the sewage system.