Emirates Central Cooling Systems RO Plant Operator Interview Questions, Process, and Tips

A membrane is a thin layer of material that selectively allows certain substances to pass through while blocking others.

• Membranes are commonly used in water treatment processes to filter out impurities.

• They can be made from various materials such as cellulose acetate, polyamide, or ceramic.

• Membranes work based on size exclusion, charge, or other properties to separate substances.

• Examples include reverse osmosis membran...read more

The number of chemicals used in R.O. plants varies depending on the specific system and water quality requirements.

• The number of chemicals used can range from 1 to 3 in a typical R.O. plant

• Common chemicals used include antiscalants, biocides, and pH adjusters

• The specific chemicals and their quantities are determined based on the feed water quality and desired treated water quality

There are mainly two types of pumps used in R.O. plants: High-pressure pumps and Low-pressure pumps.

• High-pressure pumps are used to increase the pressure of the feed water before it enters the membrane system.

• Low-pressure pumps are used to circulate the water through the membrane system.

• Examples of high-pressure pumps include centrifugal pumps and positive displacement pumps.

• Examples of low-pressure pumps include boost

P.P.M (Parts Per Million) is a unit of measurement used to express very low concentrations of substances in water or air.

• P.P.M is used to measure the amount of a substance in a million parts of a solution or mixture.

• It is commonly used in water treatment to measure the concentration of impurities or chemicals.

• For example, if a water sample has 100 P.P.M of chlorine, it means there are 100 parts of chlorine for every mi

Chlorine is used to disinfect water by killing bacteria and other harmful microorganisms.

• Chlorine is added to water to kill bacteria, viruses, and other harmful microorganisms.

• It helps in preventing the spread of waterborne diseases.

• Chlorine also helps in removing odors and improving the taste of water.

• It is commonly used in water treatment plants, swimming pools, and household cleaning products.