Name:.. 11. An activated sludge system has a single aeration basin with a volume of 300,000 gal and 2 - 25 ft. diameter secondary clarifiers. The influent flow is 1.1 MGD, and the influent BODs and TSS are 170 mg/L and 190 mg/L, respectively. The mixed liquor suspended solids concentration is 2500 mg/L, and the recycle suspended solids concentration is 6800 mg/L. The sludge recycle flow rate is 0.60 MGD and the solids residence time is 9 days. 10a. Calculate the volumetric BODs loading rate on the aeration basin in units of lbs/1000 ft³-d. ( 10b. Calculate the F:M ratio in units of g-BODs/g-TSS-d

Name:.. 11. An activated sludge system has a single aeration basin with a volume of 300,000 gal and 2 - 25 ft. diameter secondary clarifiers. The influent flow is 1.1 MGD, and the influent BODs and TSS are 170 mg/L and 190 mg/L, respectively. The mixed liquor suspended solids concentration is 2500 mg/L, and the recycle suspended solids concentration is 6800 mg/L. The sludge recycle flow rate is 0.60 MGD and the solids residence time is 9 days. 10a. Calculate the volumetric BODs loading rate on the aeration basin in units of lbs/1000 ft³-d. ( 10b. Calculate the F:M ratio in units of g-BODs/g-TSS-d

Structural Analysis

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Author:KASSIMALI, Aslam.

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Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Integrated Solid Waste Management

Integrated Solid Waste Management (ISWM) is a thorough waste suppression, compost, removal and recycling Program. An effective ISWM system considers how to suppress, manage and recycle solid waste in a manner that is most efficiently to protect human health and the surrounding. ISWM system requires evaluation of public wants and demands and then selecting and merging the most effective waste management activities for the proposed demands. The main ISWM activities for solid waste management are Waste prevention, Recycling and Composting, and Combustion and Removal and waste collection in a properly planned, constructed, managed and mitigated landfill areas. Each of these requires careful designing, financing, accumulation, and delivery of activities.

Question

Name:..
11. An activated sludge system has a single aeration basin with a volume of 300,000 gal and 2
- 25 ft. diameter secondary clarifiers. The influent flow is 1.1 MGD, and the influent
BODs and TSS are 170 mg/L and 190 mg/L, respectively. The mixed liquor suspended
solids concentration is 2500 mg/L, and the recycle suspended solids concentration is 6800
mg/L. The sludge recycle flow rate is 0.60 MGD and the solids residence time is 9 days.
10a. Calculate the volumetric BODs loading rate on the aeration basin in units of
lbs/1000 ft³-d. (
10b. Calculate the F:M ratio in units of g-BODs/g-TSS-d
9

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