Denitrification is commonly accomplished as a separate process after carbonaceous BOD removal. An alternative is to...

Denitrification is commonly accomplished as a separate process after carbonaceous BOD removal. An alternative is to recycle mixed liquor to an anaerobic stage at the head end of the aeration tank. What potential advantage does the alternative offer? Explain.

Expert Solution

The activated sludge process is mainly depends upon the organic waste present in the waste water and micro organism present in waste water i.e F/M ratio Food to micro organism ratio (as food of the micro organism is organic waste).This mixture of micro organism and waste water is called mixed liquor.

As food of the micro organism is organic waste, this mixed liquor have to stay for a certain time for growing of micro organism..This certain time is called "mean cell resistance time (MCRT)".

The sludge when it is collected from the secondry sediment tank, the sludge contains active micro organism in it, so that's why it is called activated sludge.

85% of the sludge is disposed off for the sludge digestion and remaining of the sludge is recycled to the aeration tank for the further decomposition of the organic waste present in the secondry sedimentation tank( this is called return activated sludge), as the collected sludge have all the active micro organisms and there is no need to give any micro organism from outside and this micro organism may increse in their numbers after getting sufficient oxygen from the aeration tank and again further reduces the organic waste and BOD of the wastewater.This is why the alternative offer has the potential advantages.

Ally Wells answered 8 months ago

Which wastewater treatment process is responsible for the removal of most of the BOD in sewage?

1-Explane these process and the role of bacteria: - Ammonification - Nitrification - Denitrification, 2- Identify...

1-Explane these process and the role of bacteria: - Ammonification - Nitrification - Denitrification, 2- Identify three beneficial results of symbiotic nitrogen fixation 3- Outline the sulfur cycle, and explain the roles of microorganisms in this cycle

Discuss biological phosphorous removal process.

Exactly what is accomplished by the final step in the process, performed by the controller?

Question Applying internal control over cash receipts by mail. Review the internal controls over cash receipts by mail presented in the chapter. Exactly what is accomplished by the final step in the process, performed by the controller?

what is annamox process?what are its advantages and disadvantages when compared with conventional nitrification-denitrification processes?

what is the efficacy of the RO reclamation process in terms of removal efficiencies for the...

what is the efficacy of the RO reclamation process in terms of removal efficiencies for the related water quality parameters;

Describe the 3 types of membranes commonly used to separate the test solution from the internal...

Describe the 3 types of membranes commonly used to separate the test solution from the internal reference electrode.

Liquefaction, the process of forming a liquid typically from a gas, can be accomplished by changing...

Liquefaction, the process of forming a liquid typically from a gas, can be accomplished by changing temperature and/or pressure. Describe how the variables are changed in most industrial processes, such as forming liquid argon? From an atomic or microscopic point of view, how do the particles or atoms have to arrange for a liquid to form and what holds them together?

Suggest a process for Fe2+ and Mn2+ removal and where would you place it in the...

Suggest a process for Fe2+ and Mn2+ removal and where would you place it in the process train and why. Calculate a theoretical need for an oxidant consider Cl and permanganate and discuss pros and cons for each. (2 points)

What are the waste removal/ disposal methods that can be utilized in this process industry

Question