Q. For how many days the sludge constituting biosolids is subjected to composting?

View solution

Q. What is the final water content of sludge after dewatering?

View solution

Q. To what temperature is a sludge constituting liquid biosolids heated in order to treat it?

View solution

Q. At what temperature the sludge constituting biosolids is heated, when it is treated by the pasteurization method?

View solution

Q. What is the solid retention time assumed when the sludge constituting biosolids is treated anaerobically?

View solution

Q. Which of the following methods is used in both dewatering and thickening?

View solution

Q. For a return activated sludge pump what is the type of pump preferred?

View solution

Q. For removing the digested biosolids which type of pump is preferred?

View solution

Q. Which type of pump is preferred to remove trickling filter humus?

View solution

Q. Why is the sludge aerated?

View solution

Q. ________ is treated in activated sludge reactor.

View solution

Q. After the treatment, the BOD demand ______

View solution

Q. Which is the next reactor after activated sludge reactor in the treatment process?

View solution

Q. Where is the sludge at the bottom of the clarifier processed to?

View solution

Q. Which of these is not an alternative to activated sludge treatment systems?

View solution

Q. An activated sludge system consists of two components, an aerator and ________

View solution

Q. How is air pumped in the aerator unit?

View solution

Q. Which are the three ingredients in activated sludge systems?

View solution

Q. Mechanical stirring can be done instead of injection of air from the bottom.

View solution

Q. The sludge particles concentration is increased by the growth of the organism in aeration tanks.

View solution