Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Question
Chapter 2, Problem 2.14P
To determine
The overall moisture content of the waste.
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c) Complete the following Table Q2 (c) and calculate the moisture content of solid
waste.
Table Q2 (c)
Compositions
Wet percent (%)
Moisture
Dry Percent (%)
51
80
9
12
31
60
9
6
Food
Plastics
Rubber
Miscellaneous
2-14. Using the moisture contents
(wet basis) of the waste components
given in Table P2-14, calculate the
overall moisture content of the waste
having the composition also shown.
This calculation can be simplified by
assuming 100 lb of waste.
Table P2-14
Moisture content,
Percent by
Component
percent (wet basis)
weight
Food
70
10
Paper
6
33
Cardboard
5
8
Plastics
2
5
Textile
10
4
Rubber
2
3
Yard waste
60
18
Metals
3
10
Miscellaneous
6
9
2.Calculate the moisture content of the
waste in Problem 2-14 on both a wet
and a dry basis. Why the difference?
Which number
makes more sense to you, and why?
3.Determine the composition of the
waste in Problem 2-14 if yard waste is
sepa-rately collected. How would this
affect the moisture content?
Briefly describe how the moisture content of waste is determined.
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- Question 1 If the waste with BOD4-30 equal 150 mg/l and K1-20 0.23/day is discharge to a stream At an average temperature 30 C.0 = 1.047 A. compute the BOD would de exerted in 5 days at temperature 20 and 30 C (BODS-30, BODS-10). 8. compute the organic loading in (kg/day) for BOD 5-20 lf the flow rate 35 m3/1 Question 2 if the waste with ultimate BOD, equal 190 mg/L and K 1-20 0.23/day is discharge to a stream at an average temperature 25°C. a. compute the BOD would be exerted In 3 and 5 days at temperature 20 and 25° C, (BOD3-20), BOD 5-20, (BOD 3-25 ), BOD -25 ? b.compute the organic loading in (kg/day) for BOD 5-20 If the flow rate 50 m3/h? Question 3 بحبواب uses a single stage rock-media trickling filter for Secondary treatment, A wastewater treatment plant flow rate 2000m3/day concentration of BOD in raw sewage = 400 mg/! 30% BOD removed in primary sed. volume of filter = 169.65 m3. direct recirculation pump operates at 2.78 m3/min to the filter fined the efficiency of T.F and the…arrow_forwardQ4 Estimate the energy content of a solid waste sample with the composition below and what is the content on a dry basis and on ash free dry basis? Component Percent by mass Energy kJ/kg Food waste Paper Cardboard Plastics Garden trimming Wood Tin cans Total 15 45 10 10 10 5 5 100 Based on 100 kg sample of waste Moisture content% 70 6 5 2 60 20 3 4,650 16,750 16,300 32,600 6,500 18,600 700arrow_forwardchoose the correct answerarrow_forward
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