2.5 Introduction to MBR

What is the primary principle behind membrane separation processes?

• Filtration

• Evaporation

• Chemical reaction

• Distillation

Membrane separation processes are primarily based on:

• Molecular size difference

• Electrical conductivity

• Thermal conductivity

• Chemical reactivity

In MBR systems, what does "MBR" stand for?

• Membrane Biological Reactor

• Microbial Biodegradation Regulator

• Membrane-Based Rejuvenator

• Molecular Barrier Reactor

What is the primary function of the biological reactor in an MBR system?

• To generate electricity

• To produce chemicals

• To treat wastewater using microorganisms

• To filter drinking water

Which of the following is a common material used for MBR membranes?

• Glass

• Metal

• Polymer

• Concrete

What is the primary driving force in membrane separation processes?

• Temperature

• Pressure

• pH level

• Concentration gradient

What is the purpose of a semi-permeable membrane in membrane separation processes?

• To allow all particles to pass through

• To block all particles from passing through

• To allow only certain particles to pass through

• To change the chemical composition of the solution

In membrane filtration, what does 'pore size' refer to?

• The size of the entire membrane module

• The size of the particles that can pass through the membrane

• The thickness of the membrane material

• The pressure applied to the membrane

What does the term "flux" refer to in MBR technology?

• Flow rate of treated water

• Rate of membrane fouling

• Rate of permeate production per unit area of membrane

• Membrane pore size

What is the role of aeration in MBR systems?

• To increase membrane lifespan

• To promote biological treatment and mixing

• To remove dissolved salts from wastewater

• To reduce energy consumption