A wastewater treatment plant has four primary clarifers, each with diameter of 15 m and side water depth of 4 m. The average daily fow is 24,000 m3/d. The effuent weir is located on the periphery of each tank. Calculate the surface overfow rate, detention time, and weir loading rates. If one tank is taken out of service for maintenance, what happens to the overfow rate and detention time? Is the design adequate for the average fow with the three tanks in service?

Q: Design the in-line storage volume required to equalize the flowrate by using the following data.…

A: Time (hour) Flow (m3 /s) Volume (m3 ) 0000 0.0591 425.52 0200 0.0336 241.92 0400 0.0297…

Q: The town of Urbana has a low-turbidity raw water and is designing its overfow weir at a loading rate…

A:

Q: A treatment unit is 7.0m wide, 25m long and has a depth of 3.5m. If the wastewater flow rate through…

A: Question is based on waste water treatment . Dimension of treatment unit and wastewater flow are…

Q: A production well was discharged and tested through an atmospheric silencer at sea level (1 bar…

A: (1)

Q: A rain event generates an average flow of 0.11 m2/s for 15 minutes. The average suspended solids…

A:

Q: The city of Ten Sleep proposes to use Crater Lake for its water supply. The plan is to treat 3,500 m…

A: "Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: If the flow into a 20 m wide x 85 m long x 4 m max height detention basin occurs at a constant rate…

A:

Q: oluble BOD5 = 80 mg/L Assume that the BOD5 of the suspended solids may be estimated as equal to 50%…

A: According to given data  A small town has been directed to upgrade its primary wastewater treatment…

Q: 16) If a 1.0 m/s flow water treatment plant use ten sedimentation basins with an overflow rage of 15…

A:

Q: Two sedimentation tanks operate in parallel. The combined flow to the two tanks is 0.1000 m³/s. The…

A: Given- 2 sedimentation tanks in parallelcombined flow=0.1000 m3/sDepth h=2 mdetention time t=4 hrs…

Q: m If a dairy processing factory produces an average of 235 of wastewater with a BOD of 1200m2t.…

A: A dairy processing factory produces discharge Q= 235 m3/d of wastewaterper capita daily sewage flow…

Q: 2. The average wastewater flow from a community of 20,000 is 125 gpcd. The 5 day, 20 deg C BOD is…

A: Population = 20000To Find:1) Settling tank surface area2) Settling tank diameter3) BOD removal in…

Q: The average design flow at a wastewater treatment plant facility is 1.5 m3/s. The bar rack is…

A: Design Flow = 1.5 m3/s Clear spacing between bars of bar rack = 2.5 cm

Q: If a 2.65-m'/s flow of water treatment plant uses 2 horizontal flow sedimentation basins with an…

A: Given- Flow- Q=2.65 m3/s, 2 sedimentation tanks, Overflow rate OFR=45 m3/day/m2 Detention time t=65…

Q: X 1. One million gallons per day of municipal wastewater with a BOD5 of 260 mg/L and suspended…

A:

Q: A wastewater treatment plant will receive a flow of 30,000 m3/day. The plant has a 3.6 m deep…

A: Given:- Flow rate, Q=30000 m3/dayDepth of circular primary clarifier, d=3.6 mSurface overflow…

Q: Two final clarifiers following an activated sludge aeration tank have diameters of 60 feet and…

A: Given:- Diameter of clarifier = 60 feet Sidewall depth = 11 feet Mean diameter of effluent channel =…

Q: The wastewater contains 7.5 x 105 fecal CFU per liter. The maximum permissible fecal coliform…

A: Given: Initial coliform concentration, Co = 7.5 x 105 CFU/L Maximum permissible coliform…

Q: Wastewater from a small rural town has been estimated to have a maximum design flow of 8,200 m³/day,…

A:

Q: It takes 30 hours for water to flow from Point A to point B in a river. The flow rate and BOD5 in…

A:

Q: A distributary channel having bed width 5.00 m and full supply depth of 1.50 m carries 3.0 m3/s of…

A:

Q: Design a wastewater treatment primary clarifier for an average flow rate of 1.10 MGD, and a peak…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A rectangular clarifier of 30 m length, 10 m width and 4 m depth is provided with a detention time…

A:

Q: The city of Ten Sleep proposes to use Crater Lake for its water supply. The plan is to treat 3,500 m…

A: Solution: Given Data: The plan is to treat 3,500 m 3 /d by direct filtration.

Q: A Circular primary sedimentation tank for a municipal WWTP is to be designed for an average flowrate…

A:

Q: A 30 ft wide UV treatment tank has a serpentine weir to regulate flow depth. The forks of the weir…

A: Given:- The width of the UV treatment tank = 30 ft The forks of the weir = 1.5 ft wide The length of…

Q: here are currently 420 inhabitants in the small village of Pravino. The population is estimated to…

A: BOD5 loading generated in the year 2050 = Organic loading * population in 2050 = 45*10-3*940 =42.3…

Q: 2. A flocculation basin is to be designed for a water treatment plant, and the design flow is 49,200…

A:

Q: Southside Water Treatment Plant in Tyler, TX Evaluate the primary and secondary sedimentation tanks…

A: Sedimentation tank- is the tank that is used to remove impurity from wastewater by using gravity…

Q: 2. The sedimentation portion of the in-line treatment plant is to be designed. The proposed design…

A: Given  Width of sedimentation tank = 130 ft  Length of sedimentation tank= 180 ft  Depth of…

Q: A tannery with a wastewater flow of 0.011 m½ and a BOD; of 590 mg/L discharges into a creek. The…

A:

Q: Sedimentation is the process of allowing particles in suspension in water to settle out of the…

A: Given: Discharge for four clarifiersQ=1.5 MGD Q=1.5×3785.4 m3day       1 MGD=3785.4 m3day Q=5678.10…

Q: During normal operation, both chambers would be used. Each chamber is to be a rectangular tank with…

A:

Q: The Waramurungudi tannery with a wastewater flow of 0.011 m^3/s and a BOD5 of 590 mf/L discharges…

A:

Q: Given a circular clarifier that is 96 feet in diameter with a sidewall water depth of 8.5 feet and a…

A: (1) Diameter of the circular clarifier(2) Sidewall water depth     (3) Average flow discharge of the…

Q: Q2: A wastewater containing 300 mg/l SS and 250 mg/l BOD passes through a primary sedimentation tank…

A: Here removal efficiency is not given, so we go with standard efficiency value. BOD removal in…

Q: @ (b) TTM State the type and illustrate the sewer system commonly employed in Malaysia, Then,…

A: The sewerage systems or water carriage systems in Malaysia are of the following three types:…

Q: You’re working on a preliminary design for a water treatment plant expansion for Fell City.  The…

A: Given Data Discharge of water to be treated, Q=12MGD=12×10624×60=8333.33 gpmWater required for…

Q: 2. The average wastewater flow from a community of 20,000 is 125 gpcd. The 5 day, 20 deg C BOD is…

A: Population = 20000To Find:1) Settling tank surface area2) Settling tank diameter3) BOD removal in…

Q: Assume that DLSUD lake is 100m2 and its average height is 5ft. Wastewater that flows into the lake…

A: Given :

Q: A stream carries a flow of 2000 m3/day with TDS concentration of 650 mg/l. At a point, 100 m3/day of…

A:

Q: A municipal wastewater treatment plant uses a circular clarifier. It receives 12 million gallons per…

A:

Q: A community receives 0.50 m³/s of flow into its wastewater treatment plant. The total surface area…

A: Given data, Flow rate Q = 0.5 m^3/s Surface area of primary clarifiers A = 2700 m^2 Retention time t…

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.