UPTU Previous Question Papers B Tech
6th Semester Biotechnology of Waste Treatment-2
Note : (1) Attempt all questions
(2) All questions carry equal marks.
1 . Attempt any four parts of the following :
(a) Defining the term BOD, develop the following expression Y = L0 (l-e-W)
(b) Enumerate the important microorganisms involved in biological treatment processes and give the salient features of one of the microorgnisms of your choice.
(c) Discuss the constructional features of treckling filter with a neat diagram.
(d) Describe the classification of treckling filter with their characteristic features.
(e) Give the features of RBC with the help of a neat diagram.
(f) Discuss the typical bacterial growth curve.
2. Attempt any four parts of the following.
(a) What do you understand by the term “Activated Sludge”? Discuss in brief the features of conventional activated sludge process with a neat flow diagram.
(b) What are the various modifications of conventional activated sludge process?
(c) What do you understand by the term “Minimum mean cell residence time”? Explain its importance in the design of biological waste treatment reactors.
(d) Derive the expression for the mass concentration of microorganisms in a complete mixed-no-recycle reactor used for biological treatment of a waste water.
(e) Explain the phenomena of “Sludge Bulking” in activated sludge process.
(f) Explain the mechanism of stabilization of organic waste in an oxidation pond with the help of a neat diagram.
3. Attempt any two parts of the following :
(a) What do you understand by anaerobic digestion of sludge? How does high rate digestion differ from conventional sludge digestion process?
(b) Give a brief account of process microbiology in anaerobic sludge digestion.
(c) Discuss the methods that have been used to design the anaerobic sludge digestions.
4. Attempt any two parts of the following :
(a) Give a brief account of fixed film reactors used in waste-water treatment.
(b) Discuss the different techniques for the treatment of waste containing nitrogen.
(c) Discuss the principle and working of UASB process.
5. Attempt any two parts of the following :
(a) Giving the pollutional characteristics of distillery effluent, discuss the various options available for its treatment.
(b) Characterizing the effluent from antibiotic plant, propose a suitable scheme for its treatment.
(c) With a neat flow diagram describe the treatment scheme for sugar factory effluent.