Biju Patnaik University of Technology 2008-7th Sem B.Tech Environmental Engineering - Question Paper
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Seventh Semester Examination - 2006 environmental engineering
Fun 'U*rk& - 70 Time: 3 Hours
Ans-C, Question No 1 *>"* * computsory and any five ffpm fst
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The ftgures m ttie rtghtJiand margin indicate marks,
1. Explain ihe following questions in ffiree - four
' 2x10
sentences.
(I) Explain llio term biodiversity with an exajnple.
(ii) Enlist four Indian environmental Laws
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enacted exclusively for the protection of |
(viii) What is sludge volume index (SVI) and | |||
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environment. |
where it is used and mention its suitable | |||
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(iii) |
Explain the hydrological cycie with a labeled |
range of values. | ||
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diagram. |
(ix) |
What is fugitive emission and explain with | ||
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(iv) |
Give a comparative scaling in decibels |
suitable examples ? | ||
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(dB) of the following noise creating |
(x) |
Explain and differentiate the following terms | ||
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components |
(a) Environmental impact analysis | |||
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(a) Jet plane (b) street traffic (c) Rock | ||||
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music |WL |
(b) Environmental impact statement. | |||
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(v) |
Differentiate BOD with COD and give the relation between them. |
2. |
(a) |
Explain the detritus/decomposer food chain with a diagram and also draw the flow diagram of the carbon geochemical |
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(Vi) |
Why are you using ULP in your petrol driven vehicles ? |
(b) |
cycle ? 3+3 Given concentration of Ca2+ as 90 mg/L in | |
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(vii) |
Why rapid sand filters are suitable for coagulated water in the water treatment system ? |
a solution, express the concentration in equivalents per litre, mill-equivalents per litre and mg/L as Ca C03. 4 | ||
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HSSM 4403/PH. 7.7 2 Contd. |
HSSM 4403/PH. 7.7 3 PT0- | |||
3. (a) Define and explain briefly (two sentences) the procedure ot measurement of the following types of solids occurred in the water systems, 5
(i) Total solids
(ii) Total Suspended solids
(iii) Total dissolved solids
(iv) Total volatile solids
(v) Totat fixed solids.
(b) An industry discharges its treated effluent with a flow rate of 1 m3feec into a river which has a flow rate of 250 m3/sec, tf the BOD of the river background is 1.5 mg/L, determine the maximum BOD of the effluent discharge if the river should not be greater than 1.7 mg/L 5
HSSM 4403/PH, 7.7 4 Contd,
4, (a) A BOD lest is conducted taking 5% wastewater mixed with 95% aerated water for the di lu t bn and th e fo I lowi n g ob s e rvation s were
taken
(i) DO of the aerated water used for dilution = 3.6mg/L
(ii) DO of the original waste water sample = 0.8 mg/L
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(iii) DO of the diluted water after incubation at 20aC for 5 days = 0.7mg/L
Compute the 5 day BOD of the above waste water sample if the de-oxygenation constant is 0.11. 5
(b) Explain the term, energy budget wilh a diagram showing the relative distribution of solar energy in terms of percentage, 5
HSSM 4403/PH. 7.7 5 PTa
5. (a) Differentiate between: 2+2+2
(i) Ambienl and Adiabatic Lapse Rate
(ii) Primary and secondary pollutants
(iii) Criteria and non-criteria Pollutants,
(b) What are the different methods used to attenuate the noise pollution ? 4
6. (a) Explain the working principle of activated
sludge process (ASP) with the help of a flow
diagram, 1\
(b) Give a composition of municipal solid waste (MSW). 4
7. (a) Give a suitable definition of hazardous waste
and enlist two sources of generation'of these wastes. 4
(b) Show the step by step process to be used in the waste reduction techniques with the help of a flow chart, Discuss three benefits of waste minimization, 6
HSSM 4403/PH. 7,7 6 Contd.
(a) Leachate and landfill gas (bj Flue gas Desulphurization
(cj Screening process in EIA
(d) Electro static precipitator (ESP)
(e) Life cycle,assessment (LCA),
HSSM 4403/PH. 7.7 *7
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Attachment: |
| Earning: Approval pending. |
