4. A discharge is made to a stream as given in the figure. Please calculate minimum dissolvedoxygen concentration in the stream. Assume that there's no nitrification and the flow rate ofdischarge is negligible with respect to the stream flow.BODS = 520 mg/LQ1 = 18927 m/dayC= C,K= 0.25/day (in BOD bottle)Q = 770675 m/dayLu = 0 mg/LC = Csu = 29 km/dayC, = 8.11 mg/L32 kmKa = 0.553/dayK, = 0.377/day

we by using stretcher equationDt=KD×LKR-KD10-KDt-10-KRt+DOi10-KRtwhereDt=D.O deficite in mg/l after…

Answered: 4. A discharge is made to a stream as…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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2 A groundwater (Q1 = 5.0 L/s) reaches a point of convergence (mixing) in a river (Q = 1.0 m3/s) where an industrial wastewater discharge (Q2 = 10 L/s) also converges. /s). If the groundwater has ferrous iron with concentration [Fe2+] = 10.0 mg/L, the industrial wastewater has organic matter with concentration TOC = 50 mg/L, determine the COD of the river downstream of the mixing point.
You are designing a 20 mgd wastewater treatment plant. To characterize the plant's influent solids, the lab used 90 ml samples of the ty[ical wastewater and the following equipment: Lab Equipment Evaporation Dish Gooch crucible 2.0-micron paper filter 2.0-micron Whatman GF/C filter Lab Measurement Dish + Residue after evaporation Weight 54.2830g 54.2170g 1.5240g 1.6948g 54.349g
Calculate the steady-state recharge rate, and find how long would it take for dissolved road salt to travel from the water table (z = −5 m) to the bottom of the unconfined aquifer (z = −11 m)? Assume, η = 0.23.
4
Water treatment..
What is the gauge reading p₂ in mm of mercury in the below figure ? The turbine develops 370 kW , when a discharge of 2 m³ / sec is flowing through it . Explain
A company is trying to build a new plant in a location near to a stream. You been asked to find out the impact of the discharged wastewater from the proposed plant on that stream that has characteristics shown in the Table below. The expected plant effluent data is shown in the same Table. Considering K₁=0.23 d¹ and K₂= 0.4 d, what is the DO in the critical point Variable Flow rate (m³/s) Ultimate BOD (mg/L) Stream 0.50 Plant 0.15 19 30 7.84 3.00 (20 20 b) 3.62 mg/L c) 4.86 mg/L d) 5.61 mg/L Dissolved oxygen (mg/L) Temperature (°C) a) 2.53 mg/L
The water stored under 500 kPa air pressure is discharged through the hole in the bottom of the tank. Calculate the time required to drain half the water in the tank. (pwater = 1000 kg / m3, Patm = 100 kPa, D1 = 2 m, D2 = 10 cm) 1. P1 = 500 kPa 3 m Water
A synthetic sample of water is prepared by adding 100 mg Kaolinite (a clay mineral), 200 mg glucose, 168 mg NaCl, 120 mg MgSO4, and 111 mg CaCl₂ to 1 liter of pure water. The concentrations of total solids (TS) and fixed dissolved solids (FDS) respectively in the solution in rug/L are equal to A 699 and 599 B с D 599 and 399 699 and 199 699 and 399
A wastewater treatment plant processes its mixed sludge by employing the gravity thickening followed by anaerobic digestion. The thickened sludge has a flowrate of 4,000 m³/d at a solids content of 5% and must be conveyed over a 100m-long pipeline (Hazen-William coefficient C = 100) between the gravity thickeners and anaerobic digesters. Size the diameter of the pipe and estimate the friction headloss using both simple multiplication factor method and rheological method, respectively.
Q1/ If concentration of total dissolved salts in Shatt Al- Arab water C = 6000 (p.p.m) and Shatt Al-Arab discharges its water into Arabian Gulf at flow rate Q=200 (m³/s). Calculate weight of Total Dissolved Salts carried by water of Shatt Al-Arab annually into water of the Gulf. ONL

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