Biochemical Oxygen Demand - Equalization (Equalizing) Tank - Engineering Assignment Help

Assignment Task:

Question 1 (16 marks)
The waste contributing steps to tomato processing industry is listed below with quantities and biochemical oxygen demand (BOD5) and suspended solids (SS) values

a) Provide a suitable waste segregation (separation) and treatment scheme 
b) What will be the flow and BOD5 concentration of the combined stream of #4 and #5

Question 2 (12 marks)
Suggest a treatment method for reuse or by-product recovery for the following wastes.
a. Dairy (milk) waste containing whey (protein) material
b. Cutting oil waste coming from metal cutting machines
c. Dye waste from cloth dyeing (textile) industry.

Question 3 (14 marks)
Using the flow diagram given below explain the role of 
i) Filter
ii) Activated carbon
iii) Filter press
iv) Equalization (equalizing) tank.

Question 5 (14 marks)
A cannery receives on a given day 12 tons of raw produce, 5 tons of cans, 0.5 tons of cartons, and 0.3 tons of miscellaneous materi¬als. Of the 12 tons of raw produce, 10 tons become processed product, 1.2 tons end up as produce waste, which is fed to cattle, and the remainder is discharged with the wastewater from the plant. Four tons of the cans are stored internally for future use, and the remainder is used to package the product. About 3 percent of the cans used are damaged. Stored separately, the damaged cans are recycled. The cartons are used for packaging the canned product, except for 5 percent that are damaged and subsequently separated for recycling. Of the miscellaneous materials, 25 percent is stored internally for future use; 50 percent becomes waste paper, of which 35 percent is separated for recycling with the remainder being discharged as mixed waste; and 25 percent becomes a mixture of solid waste materi¬als. Assume the materials separated for recycling and disposal are collected daily. 

Prepare a materials balance for the cannery on this day and a materials flow diagram accounting for all of the materials. 

Also, determine the amount of waste per ton of product.

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