10+ SOILSOL PROJECTS Interview Questions and Answers

PPM of dosing can be calculated by dividing the weight of the chemical added by the weight of the solution and multiplying by 1,000,000.

• Determine the weight of the chemical added

• Determine the weight of the solution

• Divide the weight of the chemical by the weight of the solution

• Multiply the result by 1,000,000 to get the PPM

• PPM = (Weight of Chemical / Weight of Solution) x 1,000,000

SDI formula is used to measure the amount of silt or suspended solids in water.

• SDI = (log(R1/R2) x 1000)/n

• R1 is the initial flow rate of water through a filter

• R2 is the flow rate after a certain period of time

• n is the number of filters used in the test

Criteria of membranes refer to the characteristics that determine their effectiveness in separating substances.

• Pore size

• Selectivity

• Permeability

• Chemical compatibility

• Mechanical strength

Parameters to check in ETP include pH level, temperature, turbidity, dissolved oxygen, and chemical dosing.

• pH level

• Temperature

• Turbidity

• Dissolved oxygen

• Chemical dosing

COD is Chemical Oxygen Demand, BOD is Biochemical Oxygen Demand, FM ratio is Food to Microorganism ratio.

• COD is a measure of the amount of oxygen required to chemically oxidize organic matter in water.

• BOD is a measure of the amount of oxygen required by microorganisms to break down organic matter in water.

• FM ratio is the ratio of food (organic matter) to microorganisms in a biological treatment system.

• Example: A high COD level in water indicates high organic pollution, while ...read more

Achieving final water parameters involves proper testing, treatment, and monitoring.

• Perform regular water testing to monitor parameters such as pH, chlorine levels, and turbidity

• Adjust treatment methods based on test results to maintain optimal water quality

• Implement proper filtration systems to remove impurities and contaminants

• Regularly monitor and maintain equipment to ensure efficient operation

• Train staff on proper water treatment procedures and protocols

Designing an ETP involves determining the required treatment processes, sizing the equipment, and ensuring compliance with regulations.

• Identify the type and volume of wastewater to be treated

• Select appropriate treatment processes such as physical, chemical, and biological

• Size the equipment based on the flow rate and characteristics of the wastewater

• Consider factors like space availability, budget, and regulatory requirements

• Ensure proper maintenance and monitoring procedures ...read more

ETP stands for Effluent Treatment Plant, which is used to treat wastewater before it is discharged into the environment.

• ETP removes contaminants from wastewater through physical, chemical, and biological processes.

• It helps in reducing the pollution load in water bodies by treating industrial effluents.

• Common processes in ETP include screening, sedimentation, biological treatment, and disinfection.

• ETP plays a crucial role in maintaining environmental sustainability and complia...read more