SK 2 Water Treatment

What is the purpose of ponds, sumps, and traps in effluent management?

• To control hydraulic velocity

• To monitor the level of pollutants

• To increase production and sales

• To determine and install segregation facilities

Which method is used for treating solids effluent like animal waste or calcium salts from sugar factories?

• Reverse Osmosis

• Land fill

• Ion exchange

• Biological treatment

What is the primary purpose of a wet scrubber in a water treatment system?

• To absorb acidic gases

• To decompose hydrolyzed chemicals

• To dissolve water-soluble substances

• To remove dust particles by capturing them in liquid droplets

What is the process of controlling hydraulic velocity or flow rate in effluent treatment?

• Biological treatment

• Equalization

• Tertiary treatment

• Clarification

Which treatment method is used for liquid effluent containing suspended/dissolved solids, acids & alkalis, organic matters, oil, nutrients, and minerals?

• Crystallization

• Biological treatment

• Sedimentation/clarifier

• Ion exchange

What is the final step in the wastewater treatment process that usually involves Reverse Osmosis and chlorine disinfection?

• Tertiary treatment

• Secondary oil/water separation

• Equalization

• Primary oil/water separation

Which type of scrubber is used to treat acidic gas streams containing sulfur dioxide, hydrochloric acid, and hydrogen fluoride?

• Spray Dryer absorption

• Dry Injection adsorption

• Dry scrubber

• Wet scrubber

What is the purpose of a mist eliminator in a wet scrubber?

• To remove water-soluble substances

• To separate liquid droplets from the outlet gas stream

• To absorb acidic gases

• To decompose hydrolyzed chemicals

Which method is used for the final cleaning of gases containing dust or mist particles?

• Big filters

• Gravity settlers

• Cyclones

• Electrostatic depositors

What is the main difference between aerobic and anaerobic biological treatment?

• Aerobic uses air to convert impurities to carbon dioxide, water, and biomass, while anaerobic uses oxygen

• Aerobic uses oxygen to convert impurities to methane and carbon dioxide, while anaerobic uses air

• Aerobic uses air to convert impurities to methane and carbon dioxide, while anaerobic uses oxygen

• Aerobic uses oxygen to convert impurities to carbon dioxide, water, and biomass, while anaerobic uses air