wet sludge contains 3% solid by weight is pumped to a filter belt press at the rate of 170,000lb/day. the dewatered sludge is 18% by dry weight and the filtrate has total nitrogen concentration of 100 mg/l as nitrogen. assume the belt press has 100% solid capture and specific gravity of the sludge in all forms is 1. Calculate the amount of nitrogen (lb/day) in the filtrate returned?   Please explain with details   a) 4 b) 9 c) 14 d)19

Q: = 5% Volatile solids = 80%. Note: 1 ft = 7.5 gallons No matches found. Select one: a. 4.2 lb…

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Q: Q1: Design an activated sludge process to treat a wastewater of 15000 m³/day with a BODs of 180 mg/l…

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Q: Digester volume = 40,000 ft, Raw sludge volume 5,000 gpd, Sludge concentration %3D = 5% Volatile…

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Q: In an activated sludge treatment system, the BOD concentration decays according to first order…

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Q: P.C. V, X, S S.C. Qs Xg, Sp Act. Sludge Basin RAS Q, S, Xp WAS Qw, Sun Xw

A: 1. V=5222 m3   2. Qw=121.8 m3/day   3. Qe=25798.2 m3/day   4. t=4.8 hours

Q: Determine the diameter of sludge digestion tank for 40,000 people. The sludge content per capita per…

A: Population P=40,000 Sludge content=0.068 per capita/day, Moisture of sludge=94%, Depth of tank =5 m,…

Q: need the answer as soon as possible

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Q: An activated sludge plant treating a flow of 25 L/s has an aeration basin volume of 450 m³ and…

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Q: A sample of 1 litre is drawn from the aeration tank and is then allowed to settle for 30 min. The…

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Q: Given below is the data related to activated sludge process: Plant inflow = 8800 m3/day Recycle flow…

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Q: An activated sludge system operates at a flow rate (Q) of 400 m³/day (and an HRT. 0.129 day) with an…

A: Given:- Q=400 m3/day HRT=0.129day BOD=300mg/L Ks=200 mg/L To find:- mxed liqour concentration…

Q: A completely mixed activated sludge plant treats wastewater at a rate of 2,565 m³/d. The influent…

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Q: The 550-bed Atlanta Hospital has a small, activated sludge plant to treat wastewater from the…

A: Given, V = 10 m x 10 m x 5 m N = 550  q = 1.50 m3 per day per bed   To find : Aeration time

Q: A completely mixed activated sludge process is being designed for a wastewater flow of 3 MGD using…

A: Q=3 MGD Influent soluble BOD=180 mg/L Effluent soluble BOD=10 mg/L The mean cell residence time () =…

Q: Raw sewage of 12 MLD having 300 mg/l of suspended solids enters into a sedimentation tank which has…

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Q: A- Extended aeration B- Conventional C-High rate aeration D-Step feed aeration **Good Luck**

A: Answer - Extended Aereation Extended aeration systems provide long residence times  with low F / M…

Q: A completely mix process is designed with the following data: Qo = 10000 m³/d, BOD after PST = 150…

A: A complete mix process is designed with the following data-Q0 = 10000 m3/day,BOD after PST = 150…

Q: D- Activated sludge process consists 1. Aeration tank 2. Sedimentation tank 3. Aeration and…

A: Activated sludge process consists of Aeration and sedimentation tank.

Q: slurry of sediment dredged from a reservoir consists of 14% solids by mass. The slurry also has a…

A: Slurry: A slurry is a mixture of suspended solids in water in the reservoir. The amount of slurry in…

Q: A conventional activated sludge plant is designed to treat 28000 kiloliters per day at a settled…

A: Given data- Discharge in the conventional activated sludge plant- Q=28000 kilolitres per day,…

Q: 21.The waste water treatment plant has dissolved oxygen concentration of 2.8 mg/l and a discharge…

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Q: A two litre graduated cylinder was used to determine the Sludge Volume Index (SVI) of an activated…

A: Volume of cylinder: 2 litersSettled volume: 800 mlMLSS concentration =2800 mg/ltTo find SVI of…

Q: 2. The suspended solids content is determined earned by fittering a portion of sample them a…

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Q: tank is initially filled to capacity with 300 L pure water. At t=0, brine containing 2 g/L salt is…

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Q: A dual media filter contains 0.4 m of sand with effective size 0.55 mm and 1.4 m of anthracite with…

A: Given: Type Dual media Sand   Depth 0.4 m Effective Size 0.55 mm Density 2650 kg/m3…

Q: 6. A tertiary treatment plant treats a municipal secondary effluent and is to employ fixed-bed…

A: Reference : Environmental Engineering, Waste water treatment plant. Given : Flow, COD, Contact time…

Q: b. Find the DO at 12 10. A water treatment plant treats the water at the rate of 33 MGD. Average…

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Q: For a sand filtration device, the flow rate of the influent is 30 m3/day with the sand filter area…

A: Given:- The flow rate of the influent is 30 m3/day  The sand filter area of 10 m2  To determine:-…

Q: Example 5.39 The thickened sludge from previous example 5.71 is to be digested anaerobically in a…

A: Given data- Note- Let the raw sludge loading rate- V1=100 m3/d, And, Total mass of solids = 1000…

Q: A WWTP with activated sludge secondary treatment receives 0.290 m / s of flow from the primary…

A: Answer  We are given flow rate Qo = 0.290 m3/s  microbes concentration the aeration basin X = 2500…

Q: Based on the Sieve Analysis results for filter media given below: Size of Opening (mm) Cumulative…

A: Given the results of Sieve analysis test results for filter media. The effective size = d10 : It is…

Q: There is sedimentation tank that is used to remove suspended solid particles from an incoming…

A: Given Discharge= 150m3/hr surface area= 15m2

Q: A completely mixed activated sludge process operating at equilibrium is designed to treat 300 MLD of…

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Q: How to determine the needed surface area of the secondary clarifier tank given that the flow is…

A: Given, Flow rate, Q = 40,000 m3 /day Recycling ratio = 0.5 Solid concentration = 13,000 mg/L MLSS =…

Q: A settling chamber is to be used to collect particles with a density of 1200 kg/m3 from an air…

A: A settling chamber is to be used to collect particles with a density of 1200 kg/m3 from an air…

Q: A 100-gal tank initially contains 25 gal of 50% salt solution. Fresh water is then poured into the…

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Q: A complete-mixed activated sludge process is to be designed to treat 5.0 MGD of primary effluent…

A: Flow rate= 5 MGD  Primary effluent BOD5 = 180 mg/ L

Q: Direction: An activated sludge system (sketched below) is operating at equilibrium with the…

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Q: 12. What is the pH of the solution containing 2.5 X 10 of OH- at 25°C?

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Q: The 550-bed Atlanta Hospital has a small, activated sludge plant to treat wastewater from the…

A: Given, BOD5 after primary settling, So = 450 mg/L MLVSS = 2,600 mg/L   To find : F/M ratio

Q: sand bed filter is 50 ft in diameter and filled to a depth of 20 ft with sand. The sand particle…

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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.