10+ TCS Interview Questions and Answers

ETP & MEE are water treatment systems, RO is a filtration process, ZLD aims to reuse treated water by meeting permissible limits.

• ETP (Effluent Treatment Plant) treats industrial wastewater, while MEE (Multiple Effect Evaporator) is used for concentrating wastewater.

• Cost per litre of treatment from ETP is typically lower than MEE due to differences in technology and energy consumption.

• RO (Reverse Osmosis) is a filtration process that uses a partially permeable membrane to remo...read more

Hazardous waste/byproducts can be recycled through proper disposal methods, treatment, and reuse in other processes.

• Identify the hazardous waste/byproducts generated during manufacturing

• Implement proper disposal methods such as incineration, neutralization, or secure landfill

• Consider treatment options like chemical or physical processes to make the waste/byproducts less hazardous

• Explore opportunities for reusing the waste/byproducts in other processes or industries

• Ensure comp...read more

Parameters for re-use and discharge of treated wastewater include quality standards, regulations, treatment processes, and environmental impact assessments.

• Quality standards such as maximum allowable levels of contaminants

• Regulations set by local authorities or government agencies

• Treatment processes like filtration, disinfection, and nutrient removal

• Environmental impact assessments to ensure minimal harm to ecosystems

• Examples: EPA regulations in the US, WHO guidelines for wat...read more

I will ensure compliance with all regulations, prepare necessary documentation, and conduct thorough inspections to address any issues.

• Review all regulations and requirements set by GPCB

• Prepare all necessary documentation in advance

• Conduct thorough inspections of the facility to identify any potential environmental issues

• Address any issues found during the audit promptly and effectively

• Implement any necessary changes or improvements to ensure compliance with environmental reg...read more

Packed columns use packing material to increase surface area for separation, while tray columns use trays to create stages for separation.

• Packed columns have higher efficiency but lower capacity compared to tray columns.

• Tray columns are more suitable for high pressure and high liquid load applications.

• Packed columns are commonly used in distillation of low viscosity fluids, while tray columns are used for high viscosity fluids.

• Examples of packed column include Raschig rings, ...read more

Large diameter is required in vacuum distillation to reduce pressure drop and prevent clogging.

• Reduced pressure in vacuum distillation causes lower boiling points and higher vapor velocities.

• Large diameter helps to reduce pressure drop and prevent clogging of the equipment.

• Smaller diameter can cause higher pressure drop and slower vapor velocities, leading to reduced efficiency.

• Large diameter also allows for better heat transfer and more uniform temperature distribution.

• Examp...read more

Solvent recovery is the process of separating and purifying solvents from a mixture for reuse.

• Solvent recovery is important for reducing waste and saving costs in industries that use solvents.

• It involves distillation, evaporation, or other separation techniques to isolate the solvent.

• Recovered solvents can be reused in the same process or sold to other industries.

• Examples of industries that use solvent recovery include pharmaceuticals, paints and coatings, and electronics man...read more

Solvents are substances that dissolve other substances to form a solution.

• Solvents can be organic or inorganic.

• Examples of organic solvents include ethanol, acetone, and benzene.

• Inorganic solvents include water and ammonia.

• Solvents are commonly used in industries such as pharmaceuticals, paints, and cleaning products.

Sustainability refers to the ability to meet the needs of the present without compromising the ability of future generations to meet their own needs.

• Balancing economic, social, and environmental factors

• Conserving resources for future use

• Reducing waste and pollution

• Promoting renewable energy sources

• Supporting fair labor practices

• Encouraging biodiversity and conservation efforts