Showing posts with label swimmingpoolwatermaintenance. Show all posts
Showing posts with label swimmingpoolwatermaintenance. Show all posts

Saturday, April 7, 2018

How to Maintain Swimming Pool Water l How to Keep Swimming Pool Clean


pools maintenance

Basic Swimming Pool Parameters for Proper sanitation.

pH:- A scale for measurement of Acidity of water. pH is measured on a scale from    0-14, with a pH of 7 being neutral.  A pH of 7.4/ 7.5 recommenced for swimming pool / Spa water.

Total Alkalinity (TALK) :- Total Alkalinity is the measure of the ability of water to resist changes in pH.  This factor is decided by the amount of sodium bicarbonate.  Swimming pool water with low Alkalinity exhibits “pH bounce” i.e. rapid fluctuation of pH in addition of small amounts of Acid or base.

Total dissolved solids (TDS) :- Total dissolved solids is a measure of how well-used the water has become, as more pool chemicals added more TDS level.

Saturation Index-(SI) :- A calculation that determines weather the swimming pool water is balanced.

Free chlorine :- Swimming Pool sanitiser to kill germs and oxidise organic mater.

Cynuric Acid :- Swimming Pool stabiliser which preserves free chlorine from depletion by sunlight.

Combined Swimming Pool Chlorine :- Chloramines produced by action of hypochlorus acid with Amonia (NH)3.

Calcium Hardness :- A parameter that determines calcium and magnesium salts.

All the swimming pool chlorine available are generally divided into two categories depending up on its ability to fight against depletion of free chlorine under sunlight.

Unstabilised form of chlorine.
Calcium Hypochlorite (HTH).

Calcium Hypochlorite Ca(OCI)2 reacts with swimming pool water to form hypochlorous Acid (HOCL) and calcium.

It is this Hypochlorous acid which helps in sanitation of the pool.

Hypochlorous Acid (HOCL) exits in H+ OCL- state.  The sum of chlorine residual in HOCL and OCL- species in regarded as free chlorine, which is the workhorse of sanitation.

Stabilised form of chlorine.
Try chloro Iso cynuric Acid (Ticca)

In presence of sunlight hypochlorous acid is reduced to salt  (chloride) by U/V rays. swimming pool. Cynuric acid prevents depletion of HOCL by U/V rays and hence regarded as stabiliser.  Calcium hypochlorite does not generate cynuric acid and is regarded as unstabilised form of chlorine.  When using calcium hypochlorite as the sanitising agent and external source of stablizer should be used to maintain the cynuric acid level.  SDIC can be used as a source of cynuric acid.  Since SDIC also liberate hypochlorous acid in addition to cynuric acid usage should be controlled to prevent chlorine level rising alarmingly high.

Nonstabilised chlorine is recommend for chlorination purpose because use of stabilised chlorine leaves no control over cynuric which can only be reduced by dilution or backwash.  Cynuric acid levels above 100PPM makes the pool completely inactive and difficult to treat.  In such instance the pool will have to be drained and refilled. 

for information about swimming pool maintenance keep visiting our blogs.

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