8833-1 - b Briefly explain how each impacts treatment...

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Mississippi State University Department of Civil Engineering CE8833: Sludge Treatment and Disposal Spring 1996 Quiz I D. D. Truax Name: (25%) 1. With regard to sludges: a. briefly define what the term "sludge" is used to represent, b. briefly discuss the problems which they can cause, c. list three parameters which are used to characterize sludges, and d. explain briefly the significance of each characteristic listed in c. above. (25%) 2. Water is a major component of all raw sludges. a. Define the four different forms in which water exists in raw sludges. b. Approximate the typical distribution (in percent) for each form. c. Define a category of sludge treatment processes (e.g., stabilization) which best addresses the removal of each of the forms of water. (25%) 3. There are numerous considerations in defining sludge treatment needs. a. List three non-technical matters which affect sludge treatment approach.
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Unformatted text preview: b. Briefly explain how each impacts treatment decisions. c. Briefly define any impacts the sludge treatment system can have on the "source" system generating the sludge being treated. d. Briefly describe one example of how the daily operations and problems of the "source" system generating sludge to be treated can have an adverse impact the sludge treatment system performance. (25%) 4. Sludges from three processes is to be blended prior to treatment. The following table lists the characteristics of each of these sludge streams. Characteristic Waste Stream 1 2 3 Flow (gal/day) 2500 500 6000 Solids Concentration (%) 0.9 4.0 1.4 Sludge Specific Gravity 1.020 1.105 1.075 Estimate: a. the mass of solids to be treated (pounds dry weight per day), b. the volume of sludge to be treated (gallons per day), and c. the specific gravity of the solids....
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