BEU PYQ: Environmental Engineering-II, 6th Semester

BEU PYQ: Environmental Engineering-II, 6th Semester:- In This article, I have provided the solution of Environmental Engineering-II BEU Previous year’s question paper along with its Solution that might be similar and high chance of coming in BEU’s upcoming examination. I tried to make the solutions very simple and kept the language easy so that every student could understand it.

Students can easily Download the solution of the Environmental Engineering-II Question paper as well as the Environmental Engineering-II BEU Question Paper Solution by just clicking on the Download Button available at the bottom of this page.

This Blog is to provide BEU Solutions to past year’s question papers in Environmental Engineering-II assisting Students in their exam preparation

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BEU PYQ (Previous Years Question) Papers

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Download Bihar Engineering University (BEU) Previous Years Question Paper Solution

Instructions:-

(i) The marks are indicated in the right-hand margin.

(ii) There are NINE questions in this paper

(ii) Attempt FIVE questions in all

(iv) Question No. 1 is compulsory

Q. 1 Choose/Write the correct answer to the following (Any seven questions only):

(a) Imhoff cone is used to determine

(i) settleable solids

(ii) suspended solids

(iii) dissolved solids

(iv) None of these

(b) The main objective of secondary treatment of wastewater is

(i) COD removal

(ii) BOD removal

(iii) nutrient removal

(iv) All of the above

(c) The ratio of maximum daily sewage flow to the average daily sewage flow for sewer mains of 0.5 to 1 m diameter, is generally taken as

(i) 1.5

(ii) 2.0

(iii) 3.0

(iv) None of these

(d) The percentage of activated sludge mixed with the wastewater in the activated sludge process of wastewater treatment ranges between

(i) 10 to 20

(ii) 20 to 40

(iii) 40 to 60

(iv) None of these

(e) The bacteria which require free oxygen for their survival are called

(i) Aerobic bacteria

(ii) anaerobic bacteria

(iii) facultative bacteria

(iv) None of these

(f) The most serious environmental effect posed by hazardous waste is.

(i) air pollution

(ii) contamination of groundwater

(iii) increased use of land for landfills

(iv) None of these

(g) The most suitable section of a sewer in a separate sewerage system is:

(i) rectangular

(ii) circular

(iii) new egg shape

(iv) parabolic

(h) The gas which is generally found present in 85 sewers is:

(i) H2S

(ii) CO2

(iii) CH4

(iv) all of these

(i) One of the most effective forms of hazardous waste disposal may be

(i) landfills

(ii) deep well injection

(iii) Incineration

(iv) Surface impoundments

(j) Which one of the following solid waste disposal methods is ecologically most acceptable?

(i) Sanitary landfill

(ii) Incineration

(iii) Pyrolysis

(iv) Composting

All in one BEU PYQ solution PDF is Provided below

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Q.2 (a) Explain various forces acting on the sewer when laid below ground level and running full along with mathematical expressions.

(b) A raw wastewater with the following characteristics is being treated in an activated sludge plant. Given that. BOD5 of raw wastewater 220 gm/l; effluent BOD5 desired = 20 mg/l; inflow rate to aeration tank = 100m3/d; mixed liquor volatile suspended solid concentration 2000 mg/l; volume of aeration tank = 500m3; water depth in aeration tank = 2.5 m. Determine the

(i) food to microorganisms (F/M) ratio,

(ii) space loading on aeration tank,

(iii) hydraulic loading on the aeration tank and

(iv) detention period in the aeration tank.

Q. 3 (a) Explain the various types of solid wastes in detail:

(b) Discuss the types of composition of municipal solid wastes.

Q. 4 Compare between separate and combined systems of sewerage. Enumerate the advantages of egg-shape sewer over circular sewer. Explain the rational formula for estimation of storm run-off along with assumptions. Determine the size of a circular sewer for a discharge of 2.25m/sec and the sewer is to be laid at u gradient of 7500. Manning’s rugosity coefficient = 0.015.

Q. 5 (a) Explain the difference between compaction and size reduction and their importance in solid waste management.

(b) Explain the types, mode of action, and applications of equipment used for size reduction and component separation detail. https://www.akubihar.com

Q. 6 (a) List the various materials that can be recovered from the municipal solid waste generated from a typical Indian city

(b) Describe in brief the various methods employed for the disposal municipal solid waste.

Q. 7 (a) Explain the importance of the following in the design of sewers:

(i) Self-cleansing velocity and

(ii) Non scouring velocity

(b) A 2 m deep trickling filter with a diameter of 18 m is operated with a recirculation ratio of 1.5. The raw wastewater flow rate is 2.5 ML/d and the 5-day BOD of the raw wastewater is 210 mg/L. Assuming that the primary tank BOD removal efficiency is 30%, compute the hydraulic filter. as well as organic load on the trickling

Q.8 (a) FIDE do you understand by sludge volume index? Discuss in brief

(b) Design an oxidation pond using the following data:

Population 5000

Sewage generation 120 L/c/d

BOD5 of sewage 300 mg/l.

Organic loading 300 kg/ha/d

Q. 9 Write short notes on any four of the following:

(a) National river cleaning plans

(b) Roles of Govt. authorities in water supply

(d) Recycling of Sewage

(e) 3R

(f) Roles of government authorities in control of environmental pollution

Solid and Hazardous Waste Management: BEU PYQ Solution

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BEU Question Paper Solution

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Q. 1 Choose/Write the correct answer to the following (Any seven questions only):

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