Compute the required volume of the aeration tank. If the SWD is to be 15 ft and the tank length to be three times its width, how long should the tank be.

Q: The 5-day BOD of a wastewater sample is obtained as 190 mg/L (with k = 0.01 h-¹). The ultimate…

A: Given data- 5 Day BOD- Lt=190 mg/L,decay constant-k=0.01 h-1=0.01×24 day-1.⇒kD=0.434k.time t= 5…

Q: A sewage treatment plant discharges 4 ML/d of effluent with 20.17 mg/L BOD5 into a stream. The…

A:

Q: An activated sludge treatment system to treat a wastewater flow rate of 0.3 m/s of primary effluent.…

A:

Q: The aeration tank for a completely mixed aeration process is being sized for a design wastewater…

A:

Q: brine. tly to into the water table. The concentration of chloride in the be img/L. The flow in the…

A: In this question ,we have to find out Hydraulic gradient i from given data

Q: An activated sludge system operates at a flow rate of 400 m'/day with an incoming BOD of 300 mg/L.…

A: The Volume of aeration tank can be found out by the equation; FM=Q.yiV.Xwhere,FM=food to microbe…

Q: 26. An Extended Aeration treatment plant consists of an aeration compartment with a volume of 1320…

A: Calculate the F/M ratio and the volumetric loading.?

Q: b) Determine the concentration of the effiuent BOD, for the two-stage trickling filter described…

A: DESIGN FLOW = 0.0509m3/s influent BOD5=260 mg/l diameter of each filter = 24 m depth of each filter=…

Q: •Given the following information for wastewater plant, the plant is an activated sludge system with…

A: Answer Flow rate Q = 60000 m3/d Volume of Aeration tank = 7500 m3  Efficiency of aeration tank = 85%…

Q: The concentration of VSS in the returned flow rate to the aeration tank = 4000 mg/L while the MLVSS…

A: Given data- Aeration Tank-VSS concentration= 4000 mg/LMLVSS concentration= 2500 mg/LMLSS…

Q: You have been asked to provide a design for a rapid mix tank at a water treatment plant which has an…

A: Introduction: Water is the most important molecule for life on Earth, and access to safe drinking…

Q: Calculate the temperature downstream of a waste discharge outfall if the discharge flow rate is 12…

A:

Q: Subject:( Environmental Engineering 2) Question: Compute the required volume of the aeration tank,…

A: Given data- Side water depth (D) Tank length (L) Tank width (B) The flow of the aeration tank (Q)…

Q: A detention pond receives wastewater having a constituent concentration of 500 mg/L. A discharge…

A: Solution Given Data constituent Concentration = 500 mg/L Discharge concentration= 100 mg/L Flow…

Q: Consider the problem of draining a hemispherical tank of radius H* feet that is full of water and…

A: Solution Given data Circular drain hole radius= 3 inches at the bottom dVdt=-kA2gh(t)

Q: The intermittent sand filter needs to be drained and cleaned. If the treated wastewater volume in…

A:

Q: For a wastewater sample, the three-day biochemical oxygen demand at incubation temperature of 20°C…

A: step 1-

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: At the point of mixing of a river and a wastewater point discharge, DO is 5.5 mg/L and DOs is 10.1…

A: It is required to find critical deficit of DO and minimum DO. Critical time of DO deficit and…

Q: Wastewater from a primary treatment tank is to undergo secondary treatment in an activated sludge…

A: Given data-Hydraulic retention time (t) is 6hMean cell residence time is 7 daysBOD content at inlet…

Q: Design a low rate trickling filter to treat 6.0 MLD of sewage of BOD of 210 mg/l. The final effluent…

A: Question is based on waste water treatment.  BOD, sewage flow and final sewage effluent value are…

Q: 6. A biodegradable fuel having a specific gravity of 0.95 and a viscosity of 0.04 grams per cen-…

A: Solution (6) Reynolds number of the biodegradable fuel is calculated by. Re =ρvDμv =Re ×μρD Where, ρ…

Q: Alum dosage is 50 mg/L K=90 per day based on laboratory tests. Compute the detention times for…

A:

Q: A wastewater that has TOC concentration of 200 mg/L is to be treated by a fixed-bed granular carbon…

A: concentration=200mg/l flow=227m3/d Ceff=20mg/TOC

Q: A groundwater supply has been designated as vulnerable to fecal contamination, and the state has…

A: given disinfection level = 99.99 % ( 4 log) virus pumping rate = 2000 gpm length of pipe = 4200 ft…

Q: An aerated lagoon wastewater treatment is to be designed for a municipal wastewater. The design…

A: It is required to determine the applied BOD to the lagoon. Si=Influent BOD51-Primary clarifier…

Q: An aerated lagoon system was designed to treat municipal wastewater with a flow rate of 10,500…

A: Aerated Lagoon System : Aerated lagoon system is a simple system used to treat wastewater known as…

Q: Wastewater with DO concentration of 2 mg/L is discharged to a river. The temperature of the river is…

A:

Q: • An average operating data for conventional activated sludge treatment plant is as follow:-…

A:

Q: bread and breakfast facility is considering an ion exchange resī ndwater. The flow required is 1000…

A: Efficiency of the reaction :E=325-50325=85.62%so,

Q: The plant operators at the Acme WWTP maintains the 10,000 gal aeration basin shown below with a…

A: Solid retention time is the average time for which activated sludge solids remain in the treatment…

Q: Determine the size (diameter and depth) of the secondary clarifier (s) in a municipal activated…

A:

Q: 27. An EA STP receives 2500 m³ of sewage daily with a BOD concentration of 300 mg/L. The design F/M…

A:

Q: A square filter box is to be designed for filtration rate of 2.8 L/m?s. What are the required…

A:

Q: a) A wastewater treatment plant consists of primary treatment followed by an activated-sludge…

A: Mesophilic digestion takes place in a mesophilic anaerobic digester which is an anaerobic digestion…

Q: An activated sludge process is to treat a industrial sewage flow of 6000 m3/day with BOD of 240…

A:

Q: The minimum temperature of the water is 5 °C, the free chlorine residual in the effluent from the…

A:

Q: You have been asked to provide a design for a rapid mix tank at a water treatment plant which has an…

A:

Q: A CMAS treatment system must be designed for a municipal wastewater and the following operating…

A: The given data is: BOD5=0.39m3/s VSS in the aeration tank=4300 mg/L 55 g VSS=100 gm soluble BODs…

Q: AA רואד רחר בורו Determine the size (diameter and depth) of the secondary clarifier (s) at a…

A: Step 1

Q: What aerobic reactor volume and operating SRT (8) are required to treat a 20 MGD domestic wastewater…

A: Activated sludge process Assumptions All the reaction occurred in the aeration tank only The…

Q: - An aerobic digester with a total capacity of 50,000 ft³ stabilize waste-activated sludge from an…

A:

Q: An activated sludge process is to be designed to treat a sewage flow of 8640 m3/day with BOD of 200…

A:

Q: A trickling filter with a volume of 250 m3 is used to treat wastewater with flowrate 30,000 m3/d and…

A:

Q: rimary and secondary) per day. Assume 30% removal efficiency of the primary clarifier and F/M ratio…

A: Given:- The plant processes 7000 m3/d of wastewater 180 mg/L of BOD5 150 mg/L of suspended solids.…

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

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

Q: Liquid alum is delivered to a water treatment plant which contains 642.3 milligrams of alum per…

A:

Q: Dechlorination contact tank (Wastewater Treatment) An activated sludge plant has a design flow…

A: Given data: Number of tank =1 Detention time = 30 sec Depth = 10 ft For rectangular tank:  L = 4 W…

Landfills

The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.