Two trickling filters operating in parallel are being designed to treat the domestic wastewater from a town of 5500 people where the average per-capita wastewater generation is 450 liters per person per day. A plastic trickling filter media and filter height of 3.5 m have been selected. The influent BOD5 is 120 mg/L and the facility must meet an NPDES permit limiting effluent BOD5 to 35 mg/L. The filter media constant (n) is 0.67 and the BOD decay constant for the design temperature of 15°C is 1.5 (m/d)n /m.
(13 points) Calculate the tank diameter of each trickling filter that is required to meet the design criteria. Report the diameter in meters.
The answer is supposed to be 13.5 m. we have no idea how to get there, please show all steps formulas and work. Thank you
Two trickling filters operating in parallel are being designed to treat the domestic wastewater from a town of 5500 people where the average per-capita wastewater generation is 450 liters per person p...
the design flow for a plant, using 4 tricking filters with a plastic media, is 0.5 mgd. the filters will be in parallel, the influent bod5 to filters will be 200 mg/l, the required effluent bod 5 will e 25 mg/l, the trickling filter design depth is 25 ft. lab testing conducted at 25c and 40 ft depth found the biodegradability constant to be 0.865/ft 0.5 d ^0.5. find the diameter required for each trickling filters.
A regional STP handles wastewater from 22,000 people where the per capita flow is assumed to be 380 L/person/day. This STP comprises (in series) a primary settler, a trickling filter, two facultative ponds, and a mature constructed wetland. The table below gives typical values (all in mg/L) for the overflow stream after the primary settler (APS) and for the final treated effluent (FTE). Parameter APS FTE Suspended solids 120 2 Biochemical oxygen demand 130 3 Total nitrogen (as N) 30...