typical centralized wastewater treatment system
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Write an essay consisting of at least 500 words addressing ALL of the following topics (a. through h.): Discuss at least four processes that are used in a typical centralized wastewater treatment system. If a wastewater treatment plant is 90% efficient at removing BOD5, and the influent BOD5 concentration is 200 mg/L, what is the effluent BOD5 concentration in mg/L? What is the desired wastewater velocity through a grit chamber and why is this particular velocity desired? Page 251 of the textbook indicates that a trickling filter should be designed for a hydraulic load of 19 mgd/acre (million gallons per day per acre). If the wastewater flow is 100 mgd, how many acres of trickling filters are needed? Explain the laboratory sludge volume index test. Why does the test have a 30 minute duration? When would a rotating biological contactor be a good substitute for an aeration tank? Describe tertiary treatment and when it is used. Describe two on-site wastewater treatment systems.
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