9 25 Table 9 28 Provides Suspended Solids Concentrations In Several Different Wastestreams At A Municipal Wastewater Tre 1 (92.43 KiB) Viewed 25 times
9 25 Table 9 28 Provides Suspended Solids Concentrations In Several Different Wastestreams At A Municipal Wastewater Tre 2 (49.37 KiB) Viewed 25 times
9.25 Table 9.28 provides suspended solids concentrations in several different wastestreams at a municipal wastewater treatment plant. The BOD5 is measured in the sewer located just before the treatment plant as 250 mg/L, after primary treatment is 150 mg/L, and after secondary treatment is 15 mg/L. Total nitrogen levels in the plant are approximately 30 mg N/L. (a) If the design hydraulic retention time of each of four aeration basins operated in parallel equals 6 h and the total plant flow is 5 million gallons per day, what is the F/M ratio in units of lb BODg/lb MLVSS-day. (b) Suppose the plant engineer wishes to increase the concentration of microorganisms in the biological reactor because she expects the substrate level to increase. What would she command the operator to do to accomplish this goal?
TABLE /_9.28 Suspended-Solids Concentration for Different Process Streams in Problem 9.25 Process Suspended-Solids Stream Concentration (mg SS/L) Plant 200 influent Primary 5,000 sludge Secondary 15,000 sludge Aeration 3,000 basin effluent
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!