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Swimming Pool... Recirculation System And Treatment!

Swimming Pool... Recirculation System and Treatment!

The quality of the water...

The salubrity and safety offered by a pool are intrinsically related to the quality of the water inside the tank.

Pool water must be free of pathogenic microorganisms, have low turbidity and must have physical, chemical and physico-chemical conditions that do not harm the health and well-being of users and do not cause corrosion or damage to equipment.

These characteristics are obtained through the physical (filtration, heating, etc.) and chemical treatments (addition of disinfectants and other chemicals) of the tank water.

The set of equipment for this purpose is called a recirculation and treatment system.

Recirculation and Treatment System

The recirculation and treatment system includes all piping, equipment and devices for filtration, heating and disinfection of water.

Its main components are:
piping, filters, recirculation pumps, pre-filters, drains or bottom drains, boosters, return devices, suction devices, hydrotherapy devices, chemical dispensers, backwash displays and heater.

Schematic diagrams of the recirculation system.

Swimming Pool... Recirculation System and Treatment!: pool

Swimming Pool... Recirculation System and Treatment!: recirculation


Swimming Pool... Recirculation System and Treatment!: pool

Water Recirculation...

The filters for swimming pools should be dimensioned from the volume of water contained in the tank and the time of recirculation of that volume of water.

The recirculation time is the time required to filter a volume of water equal to the volume of the pool tank, ie it is the time required to pass that volume of water through the recirculation and treatment system.
This time must be less than the maximum time indicated in the table below.

The maximum recirculation time is established according to the "speed" of contamination of the water of the tank, that is, the higher the rate of introduction of impurities as a function of the volume of water, the greater the "speed" of filtration.
This means that a volume of water equivalent to that of the tank should flow through the recirculation and treatment system in a shorter time.

Several theories (all incomplete) were elaborated to try to mathematically size the maximum recirculation time. Based on these theories and practical experience, the table below was developed.

This table takes into account the degree of frequency of the pool (class of pools) and the volume of water available by bathers (tank depth).
The higher the frequency and the lower the volume of water per bather, the lower the maximum recirculation time allowed.

……………………….MAXIMUM RECIRCULATION TIME (HOURS)

DEPTH OF TANK………………………..RESIDENTIAL / PRIVATE

MAXIMUM DEPTH
UP TO 0,60 m (Note 1)........................................................ 6 HOURS

MINIMUM DEPTH
LESS THAN 0,60 m E
MAXIMUM DEPTH
UP TO 0.60 m (Note 2)............................................ 6 HOURS

MINIMUM DEPTH
BETWEEN 0.60 m AND 1.80 m (Note 3)....................................... 8 HOURS

MINIMUM DEPTH
UP TO 1.80 m (Note 4)........................................... 12 HOURS

GRADES:
1- No point in the tank has a depth greater than 0.60 m.

2- The shallowest part of the tank is less than 0.60 m and its deepest part is over 0.60 m.

3- The shallowest part of the pool has depth between 0.60 m and 1.80 m.

4- All points of the tank have a depth greater than 1,80 m.

Swimming Pool... Recirculation System and Treatment!: recirculation

Location and Device Selection!

The location of the devices should be carefully studied to ensure perfect circulation of the water inside the tank, to prevent regions with stagnant water, to allow the removal of dirt, debris, and the uniform dispersion of disinfectants and chemicals.

The following general guidelines should be observed:

a) return devices should "push" the water into the drains and bracers or swirl the water to facilitate picking up dirt and debris through the drains and bracing.

b) The bracers should be located so that prevailing winds tend to drag all floating dirt onto them.

c) at least one drain or bottom drain must be placed in the deepest part of the tank to collect dirt from the bottom and allow the tank to drain completely.

Swimming Pool... Recirculation System and Treatment!: pool

Swimming Pool... Recirculation System and Treatment!: treatment

Swimming Pool... Recirculation System and Treatment!: recirculation

Swimming Pool... Recirculation System and Treatment!: recirculation

d) a larger number of return devices must be concentrated in the tank parts and there is a possibility of water stagnation, as in the case of niches or recesses.

e) in the "beaches", parts of the tank with depth below 0.20 m, a larger number of return devices must be placed.

Swimming Pool... Recirculation System and Treatment!: system

Swimming Pool... Recirculation System and Treatment!: system

Video Editorial: SWIMMING POOL CIRCULATION SYSTEM FOR BEGGINERS 2


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