Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Discuss any test done on the five different materials of wastewater treatment plant
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- Explain what is meant by permeability and describe how to interpret the permeability ratings of vapor retarders.arrow_forwardTreatment plant questionsarrow_forwardA BOD test is run using 100mL of treated wastewater. The initial DO of the mixture after diluting the waste sample with distilled water is 9.0mg/L. After 5-day incubation, the DO measured was 4.0mg/L. After a long period of time, the DO is 2.0mg/L and no longer seems to be decreasing. Assume that nitrification has been inhibited. Determine the following: a)BOD5 & BODu of the waste sample b) BOD5 of the mixture and c) k THANK YOUarrow_forward
- Which of the following is not an apparatus or supplies for the Plastic Limit O flat glass plates for mixing soil and for rolling threads ) Distilled water O A length of rod 3 mm in diameter and 100 mm long ) Casagrande apparatus Based on the below data from a sieve analysis test, what is the cumulative percent retained above 1.25 mm sieve: Sieve Mass Size Retained 5.00 mm 10 2.50 mm 40 1.25 mm 30 630 pm| 120 315 um 12 8 160 μm Pan O 64% 36% O 22.5% O77.5% The hydrometer method is based on Stokes equation for the velocity of a freely 8 (Ctrl) - falling sphere. True Falsearrow_forwardA wastewater sample subjected to standard BOD5 test yields a test result of 200 mg/L. The rate constant is 0.18/day at 20°C (to the base 'e'). Another sample of the same wastewater is tested at a temperature of 30°C. The time in days after which the BOD yielded is 200 mg/L is (up to 2 decimal places).arrow_forwardJQuestion a) Write down the chemical equations for the reactions that take place in the DO test. b) Discuss the environmental significance of DO. c) Why should DO fixation be performed in the field rather than in the laboratory? Data Sheet Volume of solution for titration = Samples Sample A Sample B (i) (ii) (iii) (i) (ii) (iii) Average Average Titration reading Start End (+0.05mL) (+0.05mL) mL Volume of Na2S2O3 (mL) Dissolved Oxygen (DO)(mg/L)arrow_forward
- Wasterwater civil engineering 11 and 12arrow_forwardWhat diameter would a circular clarifier have to be to remove 50 μm particles with 75% efficiency from a 4 MGD (million gallon per day) flow? Assume the particle specific gravity is 1.5 and the temperature is 10°C. Answer: 18 marrow_forward7. (B)arrow_forward
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