Fourth Semester B. E. ( R ) / Second Semester B. E. (PTDP) Civil Engineering Examination

Course Code : CV212 1 CV510 Course Name : Environmental Engineering - I

Time : 3 Hours] [Max. Marks : 60

Instructions to Candidates :- (1) All questions are compulsory. (2) All questions carry marks as indicated. (3) Due credit will be given to neatness and adequate dimensions. (4) Assume suitable data wherever necessary. (5) Diagrams and chemical equations should be given wherever necessary. (6) Use of non programmable calculator is permitted.

(a) Enlist the various types of demands. Explain any one of them in detail.

(b) Design a bell mouth canal Intake for a city of 75,000 population drawing water from a canal which runs only for 8 hrs. a day with flow depth of 2 mts. Also calculate the head loss in the intake conduit if the treatment plant is 500 mts away. Given, rate of consumption 150 lpcd, velocity of flow through screen and bell mouth to be less than -15 m/s and 0.32 m/s resp.

5

(c) Enlist various fypes of pipes used in water supply scheme and write in detail about Asbestos, G. I. and cast iron pipes.

OR

(d) Explain with neat sketch working and operating characteristics of centrifugal pump- 5

2. (a) Write a detailed note on physical characteristics of water.

Contd.

(b) Determine the quantity of alum required to treat 15 MLD water if dosage I

of alum required is 14 mgllit, also determine the amount of C02 released per litre of water treated. 5

(c) From fundamentals, derive Stoke's law for settlement of discrete particles in water. How do you modify law, taking into account the temperature effect ?

(d) Differentiate between Slow Sand and Rapid Sand filters.

3. Solve any five :-

(a) Explain various types of Sedimentation Tanks.

(b) State general guidelines in designing the underdrainage system for Rapid Sand filters.

(c) Explain Economic diameter of pumping main.

(d) Define coagulation and flocculation. Explain mechanism of floc formation.

(e) Write in short about ideal site for locating "Intake".

(f) State factors affecting efficiency of settling tank.

(g) State requirements for selection of pumps for water supply scheme.

(h) Write in short about various minor lossess in pipe line.

(i) Write in short about water borne diseases and their control.

4. Solve any two :-

(a) Write note on "Break Point Chlorination".

(b) Explain with neat sketch the different types of layout of pipe system in distribution system, and compare their relative merits and demerits. 5

(c) Explain how to determine the quantity of water to be stored in the distribution system. 5

Contd.

BARl2KTTlEER - 6201772

Fourth Semester B. E. (R) / Second Semester B. E. (PTDP)Civil Engineering Examination

Course Code :CV 2121 CV 510 Course Name : Environmental Engineering - I

Time : 3 Hours] [Max. Marks : 60

Instructions to Candidates :-(1) All questions are compulsory.(2) All questions carry marks as indicated.(3) Due credit will be given to neatness and adequate dimensions.(4) Assume suitable data wherever necessary.(5) Diagrams and chemical equations should be given wherever necessary.(6) Retain the construction Line.(7) Illustrate your answers wherever necessary with the help of neat sketches.(8) Use of non programmable calculator is permitted.

1. Solve any two :-

(A) State the various purposes for which provision should be made in the averagedaily per capita demand of water in a water supply scheme for a town.Give the approximate break up for each of these purposes if the averagedaily per capita demand is

(a) 270 Lit.

(b) 335 Lit.

OR(B) The population figures of a town during the four decades ir. 1960, 1970,

1980 and 1990 are 25000, 30500, 35500 and 42000 resp. Predict itspopulation in the year 2000 and compare the results through Geometricalincrease, incremental increase method. 5

(C) Explain the working of hydraulic ram.

OR(D) Draw a neat sketch of a gate valve and explain its working. 5

BAR12KTT/EER-6201772 Contd.

2. Solve any two

(A) What is the significance of following characteristics of water ?

(1) pH

(2) Hardness

(3) Turbidity.OR

(B) State the purpose of aeration. Enlist vanous types of aerators. Explain anyone in detail. 5

(C) Explain working of c1arrifloceulator.

OR

(D) Write a note on filter troubles. 5

3. Solve any five

(A) What are the factors affecting design period ?

(B) What are the factors be considered for locating a pumpmg station ?

(C) What are the objectives of public water supply scheme ?

(D) State the specifications of filter media.

(E) Differentiate between 'dry' and 'wet' intake.

(F) Determine the quantity of alum required to treat 10 MLd of water if thedosage of alum required is 12 mglLit. Also determine the amount ofCO2 released per litre of water treated.

(0) Write a note on 'Alum as a coagulant'. 5x2=10 (

4. Solve any two

(A) Explain breakpoint chlorination. 5

(B) Write a brief note on leak detection and state the vanous tests used todetect the leakage of water. 5

(C) What are the different systems of distribution ?

Explain anyone system with a neat sketch. 5

BARl2KTT IEER-6201772 2 Contd.

5. Solve any two :-

(A) Discuss the present scenano of street collection of waste, its transport anddisposal. 5

(B)

(C)

Enumerate and describe the characteristics of municipal solid waste. 5

Describe the type of vehicle and the requirement of vehicle for transportationof municipal solid waste. 5

6. Solve any five :-

(A) State the criteria for good disinfectant.

(B) Write a note on Indore method of composting.

(C) State different methods of disinfection.Which is the best method and why ?

CD) Draw a neat sketch of circular layout of distribution system and state itsadvantages.

(E) Define the terms

(1) Refuse

(2) Garbage.

(F) State 3R's of solid waste management and explain.

(G) State the functional elements of solid waste management system.5 X 2 = 10

BAR/2KTT/EER-6201772 3 50

CKP/2K2FF/EQT – 1983/2274

Fourth Semester B. E./ Second B. E. (PTDP) Civil EngineeringExamination

Course Code : CV 212/CV 510 Course Name : Environmental Engineering–I

Time : 3 Hours ] [ Max. Marks : 60

Instructions to Candidates :—(1) All questions are compulsory.(2) All questions carry marks as indicated.(3) Due credit will be given to neatness and adequate dimensions.(4) Assume suitable data wherever necessary.(5) Diagrams and chemical equations should be given wherever necessary.(6) Retain the construction Line.(7) Illustrate your answers wherever necessary with the help of neat sketches.(8) Use of non programmable calculator is permitted.

1. Answer Q1(a) and Q1(b) :—

(a) (i) Determine the population of a city in 2021 and 2031 byincremental increase method. The data from census record forthe city is as follows :

year 1951 1961 1971 1981 1991 2001

population 69,000 84,0001,18,000 1,57,000 1,77,000 1,89,000

OR

(i i) Differentiate and explain simply submerged and reservoir intakewith neat sketches. 5

(b) (i) Enlist various types of joints used in pipes and explain anyone of them with neat sketch.

OR

(i i) Explain construction and working of centrifugal pump with neatsketch. 5

CKP/2K2FF/EQT–1983/2274 Contd.

2. (a) (i) Write a note on water borne diseases.

OR

(i i) Design a cascade aerator for flow of 450 cum/hr. 5

(b) (i) Explain in brief sedimentation and derive Stroke's law forsettling of discrete particles.

OR

(i i) Briefly explain mechanism involved in filteration. Differentiatebetween rapid sand filter and slow sand filter. 5

3. Solve any five :—

(a) Enlist various sources of water with examples. 2

(b) Enlist various types of water demand. Give an estimate for these demandsfor an average Indian city. 2

(c) State the necessity and salient features of water supply scheme.2

(d) State adventages and disadvantages of HDPE pipes. 2

(e) Draw a layout of conventional water treatment plant. 2

(f) Define the terms sedimentation, coagulation and floculation. 2

(g) State various operational problems in filteration. 2

4. Solve any two :—

(a) Define the following terms :—

(i) Disinfection.

(ii) Post chlorination.

(ii i) Chlorine demand.

(iv) Break point chlorination.

(v) Pre chlorination. 5

CKP/2K2FF/EQT–1983/2274 2 Contd.

(b) State and explain various methods of distribution system with neat sketches.5

(c) It is required to treat 5.5 MLD of water with required chlorine doseof 0.75 mg/lit. If disinfectant is in the from of bleaching powder, whichcontains 40% of chlorine, how many kg of bleaching powder is neededdaily ? 5

5. Answer any two of the three :—

(a) State and explain neat sketches, house to house collection system insolid waste management. 5

(b) Define composting and briefly differentiate between Indore composting andBangalore composting. 5

(c) Explain the following methods that are used for planning the refuse vehicleroute :

(i) Heuristic method.

(ii) Deterministic method. 5

6. Answer any five out of seven :—

(a) What are the equipments used for sanitary land filling. 2

(b) Explain factors affecting composting. 2

(c) Classify the solid waste with respect to its composition. 2

(d) Enlist criteria for Good disintectant. 2

(e) Enlist and explain any one method that is used for leakage detection inpipelines. 2

(f) Write a note on "mass curve". 2

(g) Explain "3 componeat Diagram" in incineretion with neat sketch. 2

CKP/2K2FF/EQT–1983/2274 3 275

DAB/2KTF/ER T – 1140/1430

Fourth Semester B. E. (R) / Second Semester B. E. (PTDP) CivilEngineering Examination

Course Code : CV 212 / CV 510 Course Name : Environmental Engineering – I

Time : 3 Hours ] [ Max. Marks : 60

Instructions to Candidates :—(1) All questions are compulsory.(2) All question carry marks as indicated.(3) Due credit will be given to neatness and adequate dimensions.(4) Assume suitable data wherever necessary.(5) Diagrams and chemical equations should be given wherever necessary.(5) Illustrate your answers wherever necessary with the help of neat sketches.(7) Use of Logarithmic tables, non programmable calculator, Steam tables, Mollier's

chart, Drawing instruments, Thermodynamic tables for moist air, Psychrometric chartsand Refrigeration charts is permitted.

1. Solve any Two :––(a) Define per capita demand. Explain in detail demand for :––

(i) Domestic purpose

(ii) Public purpose. 5

OR

(b) Population for last three decades for a town is given below:

Years u 1991 2001 2011

Population u 72000 81500 92600

Forecast population for the year 2041, using

(i) Arithmatical Increase Method

(ii) Logistic Curve Method. 5

(c) Explain with sketch working of reciprocating pump. Also classify them.5

DAB/2KTF/ER T–1140/1430 Contd.

OR

(d) State basic requirements of pipe joint. Enumerate types of joints. Explainany one joint with sketch. 5

2. Solve any Two :––

(a) State purpose of Aeration. Explain any two types of Aerators. 5

OR

(b) Name commonly used coagulants in water treatment. State advantages ofAlum as coagulant and describe round the end type mixing basin with baffles.

5

(c) State types of sedimentation tanks. Explain with sketch vertical flow hopperbottom tank. 5

OR

(d) Draw section through Rapid sand fitter. Explain underdrainage system withperforated pipes. 5

3. Solve any Five :––

(a) Write short note on – Surface sources of water.

(b) Draw :––

(i) Canal Intake

(ii) Lake Intake

(c) Write advantages and disadvantages of Asbestos Cement Pipes.

(d) State location and use of Air Relief valve.

(e) State acceptable limits in drinking water for – pH, Colour, Fluoride, Nitrates.

(f) Define Hardness. Give causes and disadvantages of hardness in water.

(g) Write short note on Pressure filter. 10

DAB/2KTF/ER T–1140/1430 2 Contd.

4. Solve any Two :––

(a) Enlist different forms of chlorination. Explain Break Point chlorination withfigure. Also state advantages of break point chlorination. 5

(b) Explain combined pumping and gravity distribution system. 5

(c) Write purpose of service reservoir. Explain with sketch elevated reservoir.5

5. Solve any Two :–– 10

(a) Enumerate various methods of refuse disposal. Explain any one in detail.5

(b) Write detail note on transport of refuse. 5

(c) Explain how refuse is collected in residential buildings and then from entirelocality. 5

6. Solve any Five :––

(a) Write criteria for good disinfectant.

(b) How is chlorine added to water for disinfection ? Describe any one wayof it.

(c) What are the requirements of good water distribution system ?

(d) Give advantages and disadvantages of dead end system of water distribution.

(e) Define – Garbage, Rubbish and write their constituents.

(f) Discuss disadvantages of land filling method of refuse disposal.

(g) Explain trenching method of solid waste disposal.

DAB/2KTF/ER T–1140/1430 3 105

DPK/2K2FS/OT –3555/3848

B. E. Fourth Semester / Second Semester B. E. (PTDP) Civil EngineeringExamination

Course Code : CV 212/CV 510 Course Name : Environmental Engineering – I

Time : 3 Hours ] [ Max. Marks : 60

Instructions to Candidates :—(1) All questions are compulsory.(2) All questions carry marks as indicated.(3) Assume suitable data wherever necessary.(4) Diagrams and chemical equations should be given wherever necessary.(5) Illustrate your answers wherever necessary with the help of neat sketches.

1. (a) What is meant by per capita demand ? Discuss the factors which affectthe per capita demand. 5

OR

(b) Determine the future population of a satellite town by the Geometricincrease method for the year of 2011. Given the following data :—

Year 1951 1961 1971 1981...... 2011Population thousand

93 111 132 161 ...... ? 5

(c) Enlist various types of pumps used in water supply. Explain any onewith its advantages and disadvantages. 5

OR

(d) Water has to be supplied to a town with 1.5 lakhs population at therate of 200 liters per capita per day from a river 2 km away. Thedifference in elevation between the lowest water level in the sump welland service reservoir is 40 m. Determine the size of the main andthe power required. Assume suitable data where required. 5

2. (a) Draw the flow sheet of conventional water treatment plant and statethe functions of each unit. 5

DPK/2K2FS/OT–3555/3848 Contd.

OR

(b) What are the objectives of Aeration ? Explain with neat sketches, thedifferent types of Aerators. 5

(c) Explain Slow sand filter with neat sketch. 5

OR

(d) Write a note on clariflocculator. 5

3. Solve any five :—

(a) State the requirements of wholesome water.

(b) Define, surface overflow rate of Detention time.

(c) Write a note on ‘Alum as a coagulant’.

(d) What are the factors affecting design period ?

(e) Differentiate between dry and wet intake.

(f) What are the factors considered during location if pumping station ?

(g) What are coagulant aids ? Enlist various coagulants used in water treatmentwith chemical reactions. 10

4. Solv any two :—

(a) Explain various types of disinfectants used to disinfect water.

(b) With neat sketch, explain Break point chlorination.

(c) Enlist various layouts of water distribution system. Explain any one typewith its advantages and disadvantages. 10

5. Solve any two :—

(a) Discuss the composition and sources of generation of Municipal Solidwaste.

(b) Explain the methods of collection of solid waste ?

(c) What is "Sanitary Land filling" ? Discuss various methods. 10

DPK/2K2FS/OT–3555/3848 2 Contd.

6. Solve any five :—

(a) Explain Bangalore method of composting.

(b) State the criteria for good disinfectant.

(c) Define the terms :—

(1) Refuse.

(2) Garbage.

(d) State the functional elements of solid waste management system.

(e) What are the requirements of good distribution system ?

(f) State 3 R's of solid waste management and explain.

(g) State the advantages of chlorine gas as a disinfectant. 10

DPK/2K2FS/OT–3555/3848 3 45

EAB/2KTF/SUT – 1140/1430

Fourth Semester B. E. (R) / Second Semester B. E. (PTDP)Civil Engineering Examination

Course Code : CV 212/CV 510 Course Name : Environmental Engineering

Time : 3 Hours ] [ Max. Marks : 60

Instructions to Candidates :—(1) All questions are compulsory.(2) All question carry marks as indicated.(3) Due credit will be given to neatness and adequate dimensions.(4) Assume suitable data wherever necessary.(5) Diagrams and Chemical equations should be given wherever necessary.(6) Illustrate your answers wherever necessary with the help of neat sketches.

1. Solve any Two questions :—

(a) Enlist the various types of water Demands and explain in detail about firedemand.

OR

(b) Write note on selecting location of an Intake and draw a neat sketchof River Intake. 5

(c) Enlist the various types of Pumps used in water supply scheme and withneat sketch explain the working of centrifugal pump.

OR

(d) Calculate the diameter of Rising main and hydraulic gradient from followingdata :—

(i) Population - 5,00,000

(ii) Average daily demand 240 lpcd

(iii) Velocity of flow - 1.3 m/s.

Assume Maximum daily demand = 1.8 Times AV annual daily demand,For Hazen Williams Formula CH = 100 Chezy’s constant = 80. 5

EAB/2KTF/SUT–1140/1430 Contd.

2. Solve any Two :—

(a) Enlist the various types of Aerators, also explain the objectives of Aerationand write in detail about any one type of Aerator.

OR

(b) Draw a flow sheet of conventional water treatment plant and explain inshort the unit operations involved in it. 5

(c) With neat sketch explain the working of Rapid Sand filter.

OR

(d) Enlist the various types of sedimentation basin/tanks and with neat sketchexplain the Inlet and outlet arrangement of a sedimentation tank.5

3. Solve any Five :—

(a) Enlist various factors affecting rate of demand.

(b) Write in short about Domestic water Demand.

(c) Enlist various types of pipe joints and explain any one with neat sketch.

(d) Write short note on selection of pumps.

(e) Write in short about E-Coli test.

(f) Enlist the disadvantages of fill and draw type of sedimentation tank.

(g) Compare Rapid Sand Filter and Slow Sand Filter. 10

4. Solve any Two :—

(a) Define disinfection. What are the criterias for good disinfectant ? Also explainthe mechanism of disinfection. 5

(b) Enlist the various types of Distribution systems in water supply scheme andwith neat sketch explain combined gravity and pumping system. 5

(c) Define chlorine demand and with neat sketch explain break–point chlorinationwith its advantages. 5

EAB/2KTF/SUT–1140/1430 2 Contd.

5. Solve any Two :—

(a) Enlist various methods of Municipal Solid Waste disposal and explain indetail any one of them. 5

(b) Enlist various methods of municipal solid waste collection and explain anyone of them. 5

(c) Explain in detail about 3 R’s of Municipal Solid Waste management.5

6. Solve any Five :—

(a) Define prechlorination and state its advantages.

(b) List the various forms of application of chlorine and explain any one.

(c) Enlist of various requirements of good distribution system.

(d) Enlist the various types of Layouts of Distribution System and state advantagesdead-End system.

(e) Write in short about composing method.

(f) Enlist Merits and Demerits of Incineration.

(g) Enlist the various constituents of Municipal Solid Waste. 10

EAB/2KTF/SUT–1140/1430 3 55

EAG/2KETIES - 287/341

Fourth Semester B. E. (R) 1 Second Semester B. E. (PTDP) CivilEngineering Examination

Course Code:CV 212/CV 510 Course Name EnvironmentalEngineering - I

Time : 3 Hours ] r. Max. Marks : 60

Instructions to Candidates :-(I) All questions arc compulsory.(2) All questions carry marks as indicated.(3) Due credit will be given to neatness and adequate dimensions.(4) Assume suitable data wherever necessary.(5) Diagrams and Chemical equations should be given wherever necessary.(6) Use of Logarithmic tables, non programmable calculator, Steam tables, Mollicr's

chart, Drawing instruments, Thermodynamic tables for moist air, Psychrometric chartsand Refrigeration charts is permitted.

1. Solve any two of the following ;-

(a) What is meant by per capita demand? Discuss the factors which influencethe per capita demand. 5

OR

(b) Write a detailed note on Infiltration galleries and infiltration well. 5

(c) Enumerate the various types of joints used in pipes, explain with neat sketchany two of them. 5

OR

(d) Write note on centrifugal pump or hydraulic ram. 5

2. Solve any two ;-

(a) Draw the flow-sheet of conventional water treatment plant and state thefunctions of each unit. 5

EA G/2KET /ES-287 /341 Contd.

OR

(b) What are objects of Aeration ?types of Aerators.

Explain with neat sketches, the different5

(c) Write a note on c1ariflocculator. 5

OR

(d) Explain the various Filter troubles. How are they avoided or solved ')5

3. Solve any five

(a) Explain economic diameters of pumping mam.

(b) State the requirements of wholesome water.

(c) How to minimize air vbinding from the filters ?

-(d) Define, surface overflow rate of Detention time.

(e) State the permissible limits of furorides in water. Mention ill effects whenthey aren't within permissible limit?

(D There are 3 samples A,B,C, of water having pH values of 4.4. 5.4 and6.4 resp. Calculate how many times sample A is acidic than sampleC. .'

(g) What are coagulant aids ') Enlist various coagulants used 111 water treatmentwith chemical reactions.

(h) Membrane filter technique for coliform detection. 10

4. Solve any two :-

(a) Explain vanous types of disinfectants used to disinfect water. 5

(b). Explain Mass. Curve method to find capacity of reservoir. S

(c) Write a note on causes of water waste, its detection and prevention.5

(d) With neat sketch, explain Break point chlorination. 5

EA G/2KET /ES-287 /341 2 Contd.

5. Solve any two :-

(a) Discuss the composition and sources of generation of Municipal Solid waste.5

(b)

(c)

Write note on disposal of Solid waste. 5

5Write a detailed note an collection of Solid waste III cities.

6. Solve any five

(a) What are disinfectants ? State the mechanism of disinfection.

(b) State the advantages of chlorine gas as a disinfectant.

(c) Enumerate the various layouts of distribution system and explain Radial system.

(d) Explain Indore method of Mechanical Composting.

(e) Compare Continuous and Intermittent system of water supply.

(I) What is Solid waste management ? And state the functional clements ofsolid waste management system ..

(g) Write in short about chemical characteristics of Municipal solid waste.10

EAG/2KET/ES-287/341 3 205

Fourth Semester B. E. ( R ) I Second Semester B. E. (PTDP) Civil Engineering Examination

Course Code : CV 212 / CV 510

Time : 3 Hours ]

Course Name : Environmental Engineering - I

[ Max. Marks : 60

Instructions to Candidates :- (1) All questions are compulsory. (2) All questions cany marks as indicated. (3) Due credit will be given to neatness and adequate dimensions. (4) Assume suitable data wherever necessary. (5) Illustrate your answers wherever necessary with the help of neat sketches.

1. Attempt the following :-

(a) What are the important points to be considered for a proposed water supply scheme. Discuss in brief.

(b) The following data shows the variation in population of a town. Estimate the population of the town in 2051 using Geometrical increase method.

Year 1981 1991 2001 2011 2021

Population (in Thousands)

95 115 138 180 210

(c) A storage reservoir is situated at a distance of 07 km from a city having 5 lakh population. The total loss of head from the source io city is not to exceed 20 m. Taking daily demand 170 lpcd, pumping is to be done for 12 hrs. only. Determine the size of supply main. Take f = 0.15

(d) Enlist various types of pumps used in water supply. Explain any one with its advantages and disadvantages.

OABl2KTTlEOT-6201772 Contd.

2. Attempt the following :-

(a) Draw a complete flow diagram for treating the surface water for supplying water to a city. Explain its component parts and their functional use.

OR

(b) Write short note on :-

(i) Aeration. (ii) Flocculation.

(c) Explain the process of sedimentation and prove that it is independent of depth of the tank.

(d) Explain construction and working of classifloculator with a neat sketch. 10

3. Attempt any Five :-

(a) The ratio of maximum daily consumption to avg.daily demand is -

(i) 1 .O (ii) 1.2

(iii) 1.8 (iv) 1.6

(b) The population growth curve is - (i) S-shaped curve (ii) Parabolic curve

(iii) Straight line (iv) Circular curve

(c) The chloride content of treated water supplies should not exceed -

(i) 100 ppm (ii) 150 ppm

(iii) 250 ppm (iv) 500 ppm

(d) The maximum depth of sedimentation tank is limited to -

(i) 2 m (ii) 10 m

(iii) 6 m (iv) 5 m

(e) The B.O.D. of treated water should be -

(i) 10 ppm (ii) 1 PPm

(iii) 100 ppm (iv) Nil

Contd.

(f) In pressure supply mains, water hammer pressure is reduced by providing -

(i) Sluice valve (ii) Air valve

(iii) Pressure Relief valve (iv) None of these

(g) The yield of rapid gravity filter as compared to slow sand filter is -

(i) 10 times (ii) 25 times

(iii) 30 times (iv) 15 times 10

4. Attempt any Two of the following :-

(a) Define Dismfection. What is the need of Disinfection ? Also state the requirements of a good disinfectant.

(b) Enlist various layouts of water distribution system. Brief any one type with its advantages and disadvantages.

(c) How do you estimate the storage capacity of a reservoir ? Explain "Mass Curve Method." 10

5. Attempt any Two of the following :-

(a) What is solid waste ? Classify the solid waste with their source'of generation.

(b) What is "Sanitary Land filling"? Discuss various methods.

(c) Explain 3R's of solid waste management. 10

6. Attempt any Five :-

(a) The most ideal disinfectant used far drinking water throughout the world 1s -

(i) Alum

(iii) Nitrogen

(ii) lime I

(iv) Chlorine

(b) For a city developed haphazardly, the layout of distribution pipes preferred to is -

(i) Ring system (ii) Radial system

(iii) Dead End System (iv) Grid Iron system.

Contd.

(c) The layers of vegetable wastes and right soil alternatively piled above the ground to form a mound is called,

(i) a heap (ii) plater

(iii) Windrow (iv) None of these

(d) Which of the following is the Aerobic compositing method ?

(i) Nagpur Method (ii) Kanpur Method

(iii) Indore Method (iv) Bangalore Method

(e) The capacity of reservoir in mass curve method is calculated as -

(i) A - B (ii) A x B

(iii) A + B (iv) 2A

(f) Disinfection of drinking water is done to remove -

(i) Odour (ii) Bacteria

(iii) Colour (iv) Taste

(g) Give the names for methods of collection of solid waste collection.

SPK/2K2FS/ET –3518

B. E. Fourth Semester Civil Engineering Examination

Course Code : CV 1212 Course Name : Environmental Engineering – I

Time : 3 Hours ] [ Max. Marks : 60

Instructions to Candidates :—(1) All questions are compulsory.(2) All questions carry marks as indicated.(3) Due credit will be given to neatness and adequate dimensions.(4) Assume suitable data wherever necessary.(5) Diagrams and Chemical equations should be given wherever necessary.

1. Solve any One :––

(A) What is meant by per capita demand ? Explain various types of demandin detail. 8

OR

(B) With the help of following data, calculate the population at the end ofnext three decades by Geometric increase method.

Year 1940 1950 1960 1970

Population 80,000 1,20,000 1,68,000 2,28,580 8

2. Solve any One :––

(A) A storage reservoir is situated at a distance of 07 km from a city having5 lakh population. The total loss of head from the source to city is notto exceed 20 m. Taking daily demand 170 lpcd, pumping is to be donefor 12 hrs. Only. Determine the size of supply main. Take f = 0.15

7

OR

(B) Enlist various types of pumps used in water supply. Explain Centrifugal pumpwith its advantages and disadvantages. 7

SPK/2K2FS/ET- 3518 Contd.

3. Solve any One :––

(A) Draw the flow-sheet of conventional water treatment plant and state thefunctions of each unit. 8

OR

(B) What is meant by Coagulation ? Explain various types of coagulant withits reaction. 8

4. Solve any One :––

(A) Explain working of clarifloculator with a neat sketch. 7

OR

(B) Explain the various filter troubles and how they are prevented. 7

5. Solve any Three :––

(a) With neat sketch, explain Break point chlorination.

(b) What are the different systems of distribution ? Explain anyone system witha neat sketch.

(c) How do you estimate the storage capacity of a reservoir ? Explain ''MassCurve Method''.

(d) Define Disinfection. What is the need of Disinfection ? Also state the requirementof a good disinfectant. 15

6. Solve any Three :––

(a) What is solid waste ? Classify the solid waste with their source of generation.

(b) Explain 3 R's of solid waste management.

(c) What is composting ? Explain Indore method of composting.

(d) Describe the type of vehicle and the requirement of vehicle for transportationof municipal solid waste. 15

SPK/2K2FS/ET- 3518 2 255