A community has an estimated population 20 years hence equal to 30,000 the present population is 24,000 and the present water consumption of 16,000 cu. m/day. existing treatment plant has a design capi sty of 20,000 cu. m/day. Using an arithmethic rate of population growth, detemine in what year the existing plant will reach its design capacity. The

Q: A lake contains 2x105 m3 of water and is fed by a river discharging 9x104 m3/yr. Evaporation across…

A: Step 1: Step 2: Step 3: Step 4:

Q: Waste, measured as BOD, is removed according to first order kinetics at a rate constant of 0.4…

A: We knowBODt=BODY1-e-ktso for ·%BODtBODy=100-80=20%so,0.2=1-e-0.4tt=1.9348min

Q: It is estimated that the BOD of raw sewage received at a treatment plant serving a population 20,000…

A:

Q: What is the effluent BOD5 of an activated sludge plant, given So = 150 mg/1, y = 0.5 kg biomass/kg…

A:

Q: A municipality plans to treat 2.7 ML/d of a groundwater that contains 85 µg/L of…

A: As per the company policy, only first three parts will be answered Given Data: Q = 2.7 ML/d Cin = 85…

Q: A lake contains 2x105 m3 of water and is fed by a river discharging 9x104 m3/yr. Evaporation across…

A: Approach to solving the question: Detailed explanation:To decide the convergence of the substance in…

Q: A stream containing no biochemical O2 demand (obviously a hypothetical situation) has a DO of 5.00…

A: Given  DO = 5.00mg/l Flow Rate =  8.7m3/s Temperature = 15oC Avg Velocity =  0.174 m/s Avg Depth =…

Q: 2. A digester has a total volume of 720 m3. It will be used to treat sludge from a wastewater…

A: Total volume of digester (V) = 720 m3Sludge production rate = 2m3/h Determine the retention time in…

Q: Example 7 Population of a city after 10 years is 35000 cap, and now is 28000 cap. The rate of…

A: The arithmetic increase of the population - The arithmetic increase method or arithmetic growth rate…

Q: An aerobic reactor receives wastewater at a flow rate of 400 m³/d having a COD of 1800 mg/1. The…

A: An aerobic reactor-Wastewater flow rate=400 m3/d=400x103 L/dCOD=1800 mg/LEffluent COD=300…

Q: Q2) A waste of 600 m/hr flow rate with an ultimate BOD0 = 140 mg/l is to be treated in an activated…

A: Q = 600 m3hr y = .65 kd = .055 /day So = 140 mgl Se = 20 mgl θc= 10 days

Q: 1. The influent suspended solids concentration to a primary settling tank is 435 mg/L. The average…

A: A primary settling tank (PST)-Influent suspended solids concentrations MLSS (Xt)=435 mg/L=435…

Q: A municipality plans to treat 2.7 ML/d of a groundwater that contains 85 µg/L of…

A: Given, Q=2.7MLD D=3.66 m W=9000 kg γb=450 kg/m3 K=470(μg/g)(L/μg)1/n 1n=0.515 Influent…

Q: 1 Jar tests have indicated that 80 mg/L of alum are required to coagulate water for drinking water…

A:

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.