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    Btech Ce 6 Sem Environmental Engineering Kce603 2022

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    Asit Singh CF
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    Btech Ce 6 Sem Environmental Engineering Kce603 2022

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    Asit Singh CF
    12 views2 pages
    paper aktu

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    btech-ce-6-sem-environmental-engineering-kce603-2022

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    paper aktu

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    12 views2 pages

    Btech Ce 6 Sem Environmental Engineering Kce603 2022

    Uploaded by

    Asit Singh CF
    paper aktu

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    Printed Page: 1 of 2

    Subject Code: KCE603


    0Roll No: 0 0 0 0 0 0 0 0 0 0 0 0 0

    BTECH
    (SEM VI) THEORY EXAMINATION 2021-22
    ENVIRONMENTAL ENGINEERING

    Time: 3 Hours Total Marks: 100


    Note: Attempt all Sections. If you require any missing data, then choose suitably.

    SECTION A

    1. Attempt all questions in brief. 2*10 = 20


    Qno Questions CO
    (a) Define “per capita demand”? 1
    (b) Define “Design Period”? 1
    (c) Explain the function of distribution reservoir. 2
    (d) What is ‘Reservoir yield’? 2
    (e) What guidelines EPA has set for suspended solids? 3
    (f) Define ‘dissolved material’? 3
    (g) Differentiate between Unit Operation & Unit Process? 4
    (h) What is the difference between “Disinfection” & “Sterilization” 4
    (i) Explain Aerobic decomposition? 5
    (j) Define wastewater treatment? 5

    SECTION B

    2. Attempt any three of the following: 10*3 = 30


    Qno Questions CO
    (a) Explain the suitability of any four population forecasting methods? 1
    (b) Explain with neat sketch any one type of surface reservoir? 2
    (c) Explain in detail about organics in wastewater? 3
    (d) A rectangular settling tank is to treat 1.8 million litres per day of raw 4
    water. The sedimentation period is to be 4 hours, the velocity of flow 8
    cm/minute, and the depth of the water and sediment 4.2 m. If an
    allowance of 1.2 m for sediment is made, what should be Length and
    Width of the basin.
    (e) Briefly explain the working of Trickling Filter? 5

    SECTION C
    3. Attempt any one part of the following: 10*1 = 10
    Qno Questions CO
    (a) The population of a city obtained from the census report is as given 1
    below:
    Year 1960 1970 1980 1990 2000
    Population 80000 120000 168000 228000 250000
    Calculate the population of the city for the year 2030 by Arithmetical
    increase method, geometric increase method and by Incremental
    Increase method.
    Printed Page: 2 of 2
    Subject Code: KCE603
    0Roll No: 0 0 0 0 0 0 0 0 0 0 0 0 0

    BTECH
    (SEM VI) THEORY EXAMINATION 2021-22
    ENVIRONMENTAL ENGINEERING

    (b) Estimate the hydraulic gradient in 2 m dia. Smooth concrete 1 pipe


    carrying a discharge of 3 cumecs at 10 C temperature by (a) Darcy-
    Weisbach formula (b) Hazen-William’s formula.
    Assume all suitable data

    4. Attempt any one part of the following: 10 *1 = 10


    Qno Questions CO
    (a) Illustrate with sketches the different types of layouts of pipe systems in 2
    distributing water?
    (b) Differentiate between gravity and pressure conduits? Pressure conduits 2
    are commonly used for conveying water from distant sources to the
    town for supply, explain why?

    5. Attempt any one part of the following: 10*1 = 10


    Qno Questions CO
    0
    (a) A sample of wastewater has a 4- day 20C BOD value of 75% of final. 3
    Find the reaction constant per day?
    (b) For a wastewater sample, 5 -day BOD at 200C is 200 mg/lt and is 67% 3
    of the ultimate. What will be 4-day BOD at 300C

    6. Attempt any one part of the following: 10*1 = 10


    Qno Questions CO
    (a) Determine the quantity of alum required in order to treat 13 million 4
    litres of water per day at a treatment plant, where 12 ppm of alum dose
    is required. Also determine the amount of 2 gas
    CO which will be
    released per litre of water treated.
    (b) It is required to supply water to a population of 20,000 at a per capita 4
    demand of 150 lpcd. The disinfection used for the chlorination is
    bleaching powder which contains 30% available chlorine. Determine
    how much of bleaching powder is required annually at the water works
    of 0.3 ppm of chlorine dose is required for disinfection

    7. Attempt any one part of the following: 10*1 = 10


    Qno Questions CO
    (a) Discuss Activated Sludge process with suitable diagram. 5
    (b) Explain “Vermicomposting” in brief. Also explain advantages
    5 of
    Vermicomposting

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