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1. Monitoring residual chlorine in drinking water.

Dear Mr.Savant,

You are asking for the best method for monitoring residual chlorine in water used for drinking.What is the quantity of drinking water that will be consumed at your factory daily?

Amperic electronic instruments can do the monitoring effectively, but such methods are most suitable where there is a steady flow rate and volume is sizeable.What is the source of water used for drinking and what methods of purification are used?This will determine method of chlorination and hence monitoring.As you yourself have pointed out,chlorine metering systems are available in the country.Instruments to monitor the residual chlorine are also available.If the volume/flow rate are not high, testing kits could be used instead of on-line instruments.Once you start the process of chlorination with electronic metering pumps, it will be possible to set the optimum dosage needed to maintain the minimum necessary chlorin residual.

Chorination is no more the favoured method of disinfection of water because chlorine is known to combine with certain chemical/organic compounds in wate to form compounds which are carcinogenic.Ultra Violet light is one of the fovoured methods of disinfecting drinking water and there are several manufacturers of UV equipments in the country already.Ozone is also being used increasingly for this purpose nowadays.

If I get some answers to  questions I have asked above, I will be in a position to advise you suitably.






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