Chemical Industries Consulting Bureau Interview Questions and Answers

The TDA value of inlet and outlet depends on the specific ETP system and its design.

• TDA stands for Total Dissolved Solids and is a measure of the amount of dissolved solids in water.

• The TDA value of inlet water is typically higher than that of outlet water in an ETP system.

• The TDA value can be affected by factors such as the type of wastewater being treated, the treatment process used, and the efficiency of the system.

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The hardness of treated water refers to the concentration of minerals, while pH measures the acidity or alkalinity of the water.

• Hardness of water is determined by the presence of minerals such as calcium and magnesium.

• It is measured in terms of milligrams per liter (mg/L) or parts per million (ppm).

• Water with high hardness may cause scaling in pipes and appliances.

• pH is a measure of the concentration of hydrogen ions i...read more

The chemical used mostly in ETP plants is coagulant.

• Coagulant is used to destabilize and aggregate suspended particles in wastewater.

• Common coagulants used in ETP plants include aluminum sulfate, ferric chloride, and polyaluminum chloride.

• Coagulants help in the removal of pollutants like suspended solids, organic matter, and heavy metals.

• The choice of coagulant depends on the specific wastewater characteristics and tre

ETP stands for Effluent Treatment Plant.

• ETP is a wastewater treatment plant used to treat industrial effluent.

• It removes pollutants and contaminants from the wastewater before releasing it into the environment.

• ETP uses various processes like physical, chemical, and biological treatment to purify the water.

• Examples of industries that use ETPs are textile, pharmaceutical, and chemical industries.

Conductivity is the measure of a material's ability to conduct electric current.

• Conductivity is a physical property of a substance.

• It is determined by the presence of charged particles, such as ions or electrons, that can carry electric current.

• Conductivity is typically measured in siemens per meter (S/m) or mhos per meter (mho/m).

• Metals are good conductors of electricity due to the presence of free electrons.

• Water and...read more

TDS stands for Tax Deducted at Source.

• TDS is a system introduced by the Indian government to collect taxes at the source of income.

• It is a method of deducting tax from payments made by individuals or companies.

• The person or entity making the payment is responsible for deducting the tax and depositing it with the government.

• TDS is applicable to various types of income such as salaries, interest, rent, professional fees,...read more

The full form of pH is 'potential of hydrogen'.

• pH is a measure of the acidity or alkalinity of a solution.

• It indicates the concentration of hydrogen ions in a solution.

• The pH scale ranges from 0 to 14, with 7 being neutral.

• A pH value below 7 indicates acidity, while above 7 indicates alkalinity.

• For example, lemon juice has a pH of around 2, making it acidic.

• Baking soda has a pH of around 9, making it alkaline.