4.3 Moving Bed Bio Reactor (MBBR)

What does MBBR stand for in wastewater treatment?

• Moving Bed Biological Reactor

• Microbial Bed Biochemical Reactor

• Moving Bed Bio Reactor

• Microbial Biochemical Bed Reactor

In MBBR, what are the media carriers made of?

• Glass

• Plastic

• Metal

• Concrete

What is the primary purpose of media carriers in MBBR?

• Provide structural support

• Increase surface area for biofilm growth

• Enhance chemical precipitation

• Facilitate sedimentation

What is a significant advantage of MBBR systems over conventional activated sludge systems?

• Lower operational complexity

• Larger footprint requirement

• Limited biomass growth

• Inability to handle high organic loads

Which of the following is a limitation of MBBR systems?

• Limited process stability

• High energy consumption

• Limited biomass retention

• Inability to handle variable flow rates

What does the term "pre-denitrification" refer to in MBBR systems?

• Removal of nitrates before denitrification

• Removal of organic matter before denitrification

• Removal of ammonia before denitrification

• Removal of phosphorus before denitrification

What microorganisms are responsible for denitrification in MBBR systems?

• Nitrosomonas and Nitrobacter

• Nitrospira and Nitrosococcus

• Pseudomonas and Bacillus

• Paracoccus and Pseudomonas

What is the purpose of biological phosphorus removal in wastewater treatment?

• To reduce oxygen demand

• To remove nutrients from the water

• To prevent eutrophication

• To improve sludge settleability

What does the term "anaerobic phosphorus release" mean in biological nutrient removal?

• Release of phosphorus in the presence of oxygen

• Release of phosphorus in the absence of oxygen

• Removal of phosphorus through chemical precipitation

• Phosphorus uptake by microorganisms

What effect does a longer SRT (Solid Retention Time) have on the treatment process?

• Increases sludge production

• Improves nutrient removal

• Reduces effluent quality

• Shortens the reactor size