A waste water effluent of 560 lls with a BOD = 50 mgll, DO = 3.0 %3D mg/l and temperature of 23°C enters a river where the flow is 28 m3 /sec, and BOD = 4.0 mg/l, DO = 8.2 mgll, and temperature of 17°C. k, of the waste is 0.10 per day at 20°C. The vel. of water in the river downstream is 0.18 m/s and depth of 1.2 m. Determine the following after mixing of waste water with the river water : (i) Combined discharge; %3D %3D (ii) BOD ; (iii) DO ; and (iv) Temperature.

A waste water effluent of 560 lls with a BOD = 50 mgll, DO = 3.0 %3D mg/l and temperature of 23°C enters a river where the flow is 28 m3 /sec, and BOD = 4.0 mg/l, DO = 8.2 mgll, and temperature of 17°C. k, of the waste is 0.10 per day at 20°C. The vel. of water in the river downstream is 0.18 m/s and depth of 1.2 m. Determine the following after mixing of waste water with the river water : (i) Combined discharge; %3D %3D (ii) BOD ; (iii) DO ; and (iv) Temperature.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Solve
i need the answer quickly
After primary treatment, a municipal wastewater contains 150 mg/L BOD5. The wastewater flow of 0.44 m³/s (10 MGD) is then treated in an activated sludge system with an SRT of 12 d and an HRT of 6 h. Given the biokinetic parameters tabulated below, determine the aeration volume (m³). Parameter Value 3d¹ 60 mg/L BODs 0.10 d¹ 0.6 mg VSS/mg BOD5 Hmax Ks ka Y
Assume that DLSUD lake is 100m2 and its average height is 5ft. Wastewater that flows into the lake are the following: Food square kitchen waste 7 m3/sec; Total Dissolved Solids (TDS) is 25,000 mg/L which operates 8hrs per day CIH 5m3 /hr kitchen waste; TDS is 20mg/L which operates 4hrs per day PCH 20m3 /day diluted laboratory waste ; TDS = 40mg/L (1)Determine the volumetric flow rate of the lake water can still accommodate prior to rainfall.
Q3: A raw wastewater containing 300 mg/l SS and 350 mg/l BOD passes through a primary sedimentation tank with a surface area of 600 m². Average flow rate is 15000 m³/d and a peak factor of 1.5. Estimate the effluent BOD and SS at average and maximum flow, and the average and maximum rate of sludge production? D
The results of a water analysis for Sungai Buaya is shown below: = 2.5 meq/L Mg²* = 0.6 meq/L Na* 1.7 meq/L SO? = 2.0 meq/L 0.2 meq/L Ca²+ HCO; %3D 2+7 = 0.4 meq/L = 0.4 meq/L Cl K+ (i) Calculate the concentration for each cation and anion component in mg/L (ii) Draw a miliequivalent per litre bar graph (iii) List the hypothetical combinations with values (iv) Calculate the non-carbonate hardness in mg/L as CaCO3
The discharge from the Renenutet sugar beet plant causes the DO at the critical point to fall to 4.0 mg/L. The Meskhenet Stream has a negligible BOD and the initial deficit after the river and wastewater have mixed is zero. What DO will result if the concentration of the waste(L_w) is reduced by 50%? Assume that the flows remain the same and that the saturation value of DO is 10.83 mg/L in both cases.
The characteristics of the synthetic textile wastewater are 1500 mg/L BOD, 2000 mg/L SS, 30 mg/L nitrogen, and no phosphorus. The characteristics of the domestic wastewater are 200 mg/L BOD, 240 mg/L SS, 35 mg/L nitrogen, and 7 mg/L phosphorus. Find the nitrogen concentrations in the mixture. The ratio of flow rate is domestic/textile = 4/1
Water treatment plant : SOR = 0.35 mm/sec; The analysis of this water found that there are 6 different particle sizes: 0.1 mm with settling velocity of 0.2 mm/sec; and percentage of particles = 10 %; 0.2 mm with settling velocity of 0.25 mm/sec; and percentage of particles = 20 %; 0.3 mm with settling velocity of 0.3 mm/sec; and percentage of particles = 15 %; 0.4 mm with settling velocity of 0.35 mm/sec; and percentage of particles = 5 %; 0.5 mm with settling velocity of 0.4 mm/sec; and percentage of particles = 30 %; 0.6 mm with settling velocity of 0.5 mm/sec; and percentage of particles = 20 %; Calculate the efficiency of this tank ?
The influent suspended solids concentration to a primary settling (clarifier) tank is 300 mg/L. The average flow rate is 0.037 m3/s. If the suspended solids removal efficiency is 65 percent, how many kilograms of suspended solids are removed in the primary settling tank each day?
A waste sludge flow of 40 m³/day is gravity thickened in a circular tank with a diameter of 6.8 m. The solids concentration is increased from 4.5% to 7.5% with 85% suspended- solids capture. Calculate the solids loading in kg/m² d and the quantity of thickened sludge in m³/d.
A sewage treatment plant uses the activated sludge process in its biological treatment unit with discharge of 8000m³/day having a MLVSS concentration of 3000mg/l in the aeration tank which has a volume of 25000m The BOD was 300mg/l in primary sedimentation tank. Calculate the organic loading F/M ratio.