Topic: Treatment of Water kg of bleaching powder is needed per day to chlorinate 6.4 MLD of water so that after 45 minutes of contact, there remains chlorine of 0.22 mg/l with chlorine demand 1.28 mg/t and the bleaching powder has only 20% available chlorine.
Q: A door of dimension 1.5 m x 2.5 m and sound reduction index R = 50 dB is set into a wall of…
A: The given data is shown below: Door=1.5m×2.5mR=50 dBWall=10m×3mR=75 dB
Q: 2. The figure shown is a composite shape consists of a square and a semi-circle. Determine the polar…
A: Given: A composite cross section consisting of square and semi circle Required: Polar moment of…
Q: The consecutive readings were taken with a level and 4-metre leveling staff on a continuously…
A: Given that :- Consecutive readings were taken with a level and 4 m levelling staff Common intervals…
Q: Q- In a laboratory, a flow experiment is performed over a hydraulic structure. The measured values…
A: Given- Discharge- Q=0.05 m3/s,Velocity Vm=0.25 m/s,Lr=1/30,Qp=270 m3/s, It is needed to find the…
Q: The simply supported beam ABCD is loaded by a weight W =27 kNthrough the arrangement shown in the…
A: FREE BODY DIAGRAM OF THE QUESTION;
Q: To find the Reduced Level of a roof slab of building, staff readings were taken from a particular…
A: Given that :- Back Sight = BS = 1.050 m Reduced level = RL = 135.15 m Fore sight = FS = -2.300 m (as…
Q: A reinforced concrete beam has a width of 300 mm and total depth of 600 mm. The beam will be design…
A: A) Given : Width = 300 mm Total Depth = 600 mm Factored moment = 540 kN-m f'c = 28 MPa and Steel…
Q: Practice Problem 1 Given the following girder properties: BY A = 11500 mm² d = 350 mm b = 250 mm t₁…
A: As per Bartleby's guidelines we are supposed to answer only first three questions. Kindly repost…
Q: tension in the thin wire in Newton.
A: This question has been taken from Fluid mechanics Given: A metal part is suspended from a floating…
Q: A short reach of a 2 m wide rectangular open channel has its bed level rising in the direction of…
A: Given, Width (b) = 2m Bed slope (So) = 1 in 10000 or 0.0001 Flow rate (Q) = 4 m3/s Manning's…
Q: 1. Define the following: a) Ductility b) Tensile strength c) Yield strength d) Stress-strain curve…
A: Note:- Hi! Thank you for the question As per the honor code, We’ll answer the first question since…
Q: Determine the slope at point D of the beam shown using Double Integration Method. EI = constant, E…
A: Answer We know that equation .....(1) in step 4 represents slope equation obtained using Double…
Q: 15. Consider a linear elastic rectangular thin sheet of metal, subjected to uniform uniaxial tensile…
A: Given data- A linear-elastic rectangular thin sheet of metal- Uniform uniaxial tensile stress-…
Q: L01 I Construct shear force and bending moment diagrams for the beam shown below and letermine the…
A:
Q: A RC beam is subjected to a bending moment of 200 KNm, shear force of 20 KN and a torque of 9 KNm.…
A: Given data- An RC beam- Bending moment M=200 kN-m, Shear force S=20 kN, Torque T=9 kN-m, Size of…
Q: The yield of a chemical process is being studied. From previous experience, yield is known to be…
A:
Q: T 3 m nswers: B = C= C= i i i A 17 m eTextbook and Media PB 100 kg N N N
A:
Q: A venturimeter as shown in the figure (not to scale) is connected to measure the flow of water in a…
A: Given- Diameter of the pipe=20 cm, Diameter of throat=10 cm, x=15 cm, Density- ρm=13.6,ρ=1, It is…
Q: Consider a beam of rectangular cross-section, depth h and thickness b, which is simply supported…
A: Given: Length of beam L =0.8m thickness of beam b= 50mm depth of beam d= 100mm udl w =10kN/m
Q: Question 1. For a city with an approximately 45.000 population the diurnal cycle of water demand on…
A: Diurnal cycle of water: Each weekday has two flow spikes, one in the morning and one in the evening.…
Q: A 1.2 m height highway embankment of large lateral extent is to be placed over a surface clay…
A: First we summarise the given data : Height of highway embankment = 1.2 m Clay deposit = 10 m To…
Q: A parabolic vertical curve is being designed to join a road of grade + 5% with a road of grade - 3%.…
A:
Q: a. Select a W14 of A992 steel. Use the column load tables. 1. Use LRFD. 2. Use ASD. b. Select a W16…
A: Given:- The total dead load on the compression member = 265 k The total live load on the…
Q: Which of the following conditions/factors will reduce a materials fatigue resistance: Select one or…
A: This question is related to the Strength of the material from Civil Engineering. In this question…
Q: A vehicle travelling at design speed of 80 kmph on a descending gradient of 2.5% meets on ascending…
A:
Q: Calculate the minimum required sight distance for a highway with design speed of 90 kmph when there…
A:
Q: Which of the following diagrams CORRECTLY describes the force-inertia diagram
A:
Q: Effective and Neutral Stress Question 4: The water level in a lake is 5m above the bed, and the…
A:
Q: A rectangular channel of 2.5 m width is carrying a discharge of 4 m³/s. Considering that…
A: Given: A rectangular channel of 2.5 m width Discharge of 4 m3/s. Acceleration due to gravity as 9.81…
Q: Determine the maximum shear stress if its used as a 8m beam simply supported at the left end and 2m…
A:
Q: Current Attempt in Progress Two solid bars support a load P as shown. Bar (1) has a cross-sectional…
A:
Q: Tailings storage facilities are the main mine-related risk to public health & the environment. A -…
A: A facility which is used to contain tailings is called a tailings storage facility. This can…
Q: Solve this A group of nine piles, 12 m long and 250 mm in diameter, is to be arranged in a square…
A:
Q: 4. Determine the moment of inertia about each of the principal axes Xp and Zp. Use Excel sheet for…
A:
Q: If fixed and moment at A i.e. MFAB = -50 kN. m, then what is the value of slope at A for the beam…
A: Given- Length l=5 m. MFAB=-50 kN-m,
Q: The figure shows a metal hanging by a thin wire from a floating wood block. The wood block has a…
A: Volume of metal= 8000mm3 = 8000 * 10-9 m3 Specific gravity of wood= 0.25 Specific gravity of oil =…
Q: Construct the shear and moment diagrams for the loaded beam shown. After you have the diagrams,…
A:
Q: A municipal wastewater flow of 5000 m³/d is to be treated using an activated sludge system. Assuming…
A:
Q: Question 7 The shear force resisted by one glue junction per mm length inside if the shear force at…
A: Given- Shear force at section V= 2000 N, A figure of glue junction is given- To Find- Resisted shear…
Q: What is the difference between connected cars and self-driving cars? Clearly explain the difference,…
A: The main difference in connected and self driving cars is level of involvement of driver. The…
Q: Q.2 Duty Delta A field having culturable commandable area equal to 1046 hectares is used for growing…
A: Given- Culturable command area CCA=1046 ha, Intensity of irrigation for rabi=56% & for…
Q: Draw the ELASTIC CURVE of the given beam below.
A:
Q: Ex 20 The shear strength parameters of N.C.C. are; $=15$=30* a) In a Cutest on the same soil, the…
A: A direct shear test is a laboratory or field test used by geotechnical experts to measure the shear…
Q: The surface water from airport road side is drained to the longitudinal side drain from across one…
A:
Q: A short reach of a 2 m wide rectangular open channel has its bed level rising in the direction of…
A:
Q: What is the rapid sand filter surface are required for filtering of 10 MLD water assuming a…
A: Given- Flow rate Q=10 MLD Filtration rate FR=100,000 L/m2/day, It is needed to find the surface area…
Q: The blocks of width h and height b act as a dam against water as shown in the Figure. Find the…
A: Given: h = 3 d = 4 γ=9.81 kN/m3
Q: For the simply-supported bar in the figure cis below , draw the Bending Moment (M) , Normal Force…
A:
Q: Part 1.a) determine the moment diagram Part 1.b) use the virtual work method to calculate the…
A: Given:- To find:- Moment diagram Horizontal displacement at D Concept:- Virtual work is the total…
Q: 96 H.W Draw S.f.D and B.M.D for beam shown by graphical method? Ans/ Vax Vmax = = 29.5 W = -25.5 KW…
A:
Solve thanks,
Step by step
Solved in 3 steps
- 15-11 Calculate the dosage of activated carbon to reduce an influent concentration of 300 ug/L of chloroform to 100 ug/L (treatment objective) using powdered (PAC) and granular activated carbon (GAC). Assume for the GAC and PAC process that the carbons are saturated at the influent concentration and treatment objective, respectively. Given: Q = 10 mgd. 0.625 ug of chloroform g of activated carbon ug K = 159- How long will the GAC last if the filter density p=0.37 g/cm" and EBCT= 15 min?11-7. A water contains 200 mg/L Ca, 75 mg/L Mg, 180 mg/L HCO3, and 150 mg/L CO₂- all expressed as CaCO3. Determine the chemical dosages required to soften this water as much as possible without removing magnesium. What will the final hardness be? 1-8. If the water of P7 is to be softened to a final hardness of 85 mg/L as CaCO, and is not to contain more than 25 mg/L. Mg as CaCO3, find the required chemical dosages. 1-9. Design a cation-exchange process which will produce a water meeting the criteria of PT-8. Assuming the salt must be provided in an excess of 100 percent, how much salt would be used per year in a plant with a capacity of 5000 m³/day? Solve 11-8 & 11-7 The manufacturer recom-A 1,200 gpm WTP is being designed for treating iron and manganese. The influent manganese concentration is 80 mg/L and the iron concentration is 90 mg/L. How much oxygen (mg/L DO) from aeration is needed for design? Assuming that aeration only removes 85% of Fe and Mn, how much potassium permanganate is needed (mg/L)? Design standards require 30 days of chemicals onsite. Assuming that the chemicals onside are dry, how many lbs of potassium permanganate are required? If the treatment plant is to operate two filter cells at a time, what is the required SA of each cell, assuming SOR of 2.5 gpm/sqft?
- Wet coal is dried in a continuous rotary dryer that operates at atmospheric pressure. The chips with a water content of 40 wt% and must leave with a moisture content of less than 15%. Hot air is fed to the dryer at a rate of 11.6 m (STP)/kg wet coal. HOT AIR MOIST AIR DRYER WET COAL DRIED COAL To monitor the performance of the dryer by sampling the exiting coal and determining their moisture content directly would be a cumbersome procedure and almost impossible to automate. Instead, wet- and dry-bulb thermometers are mounted in both the inlet and outlet air lines, and the moisture content of the exiting chips is determined by a material balance calculator. (STP: Standard Temperature and Pressure is 0*C and 101.325 kPa) (a) The hot air stream has an absolute humidity of 0.058 kg moisture/kg dry air and leaves with 0.087 kg moisture/kg dry air, calculate the mass of water in the exiting air per kilogram of wet coal fed. (b) Can the dryer reduce the wet coal moisture to 15%? If the answer…1-7. A water contains 200 mg/L Ca, 75 mg/L Mg, 180 mg/L HCO3, and 150 mg/L. CO₂, all expressed as CaCO3. Determine the chemical dosages required to soften this water as much as possible without removing magnesium. What will the final hardness be? 1-8. If the water of Prob. 11-7 is to be softened to a final hardness of 85 mg/L as CaCO, and is not to contain more than 25 mg/L. Mg as CaCO3, find the required chemical dosages. Solve 11-71. A commercial laundry is consdiering constucing an ion exchange process to remove hardness from water used in laundering oerpations. The laundry uses 1000 m³/d of city water with Ca²+ at 4.5 meq/L and Mg²* at 2 meq/L. Their goal is to reduce total hardness (TH) to 1 meq/L. The softening resin has a TH capacity of 60 kg-TH/m³ of media with a recommended hydraulic loading rate of 0.4 m³/(m² min). Renegeration can be accomplihsed using 100 kg NaCl per m³ of ion exchange media in a 15% solution at a hydraulic loading rate of 0.04 m³/(m² min). The exchanger tanks available to the laundrey have a diamter of 1 m. What is the total bypass-water flow rate (m³/d)? What is the total daily resin volume required to soften the water (m³/d)? How many exchanger tanks are required for a one-day operation cycle? What is the resin bed depth (m) in each exchanger tank? What is the daily volume of NaCl regenation solution used per tank (m³/d)? What is the time period required for resin regeneration in…
- Please choose the correct answer for each question: 1. Activity of a gas in equilibrium with solution is ______? A. its partial pressure; B.1.0; C. its molar concentration; D. 0.0 2. During a sorption procedure, the substance transferred from the gas or liquid phase to the solid phase is called ______ A. sorbent; B. sorbate; C. partition; D. none of the above 3. When a chemical has a lower KOW, it is more ______ A. hydrophobic; B. hydrophilic; C. more absorbable; D. less absorbable 4. _____ occurs on the adsorbent surface A. Adsorption; B. Sorption; C. Absorption; D. Adsorption and absorption 5. _____ addresses the change in the amount of a substance of interest with time. A. The equilibrium approach; B. The kinetic approach; C. Henry’s Law; D. Freudlich isotherm equation20-mm diarmeter 0.3 m 0.6 m 60-mm dumeterMPN of effluent is 10/100 ml and it reduces to 102/100 ml after chlorination. Find percentage removal (%R) and log removal (logR) of MPN.
- A sample is diluted to perHorm test 295 mL distilled water are added to 5mL sample to fill 300ML BOD bottle. Inifial dissolved oxygen concentration is 7.9 mg/L in the bottle After mcubating 5 days, dissal ved oxygen carcentvation 1s 45 mg/L- Determine 5-day BOD OF the wastewae- Deoryge nation rate Constant, k, is C.013 day- Evaluate ultimate BOD Of the wastewCHer.Please upload your full solution to the following problem. Determine the dosage and daily consumption of powdered activated carbon (PAC) required for trichloroethylene (TCE) removal given the following design specifications: 6 SUL Influent concentration = 1 mg/L TCE Carbon type: Calgon Filtrasorb 400 (12 x 40 mesh); pb = 450 g/L Freundlich parameters for TCE • Freundlich capacity parameter K = 55.9 (mg/g)(L/mg)¹/n • Freundlich intensity parameter 1/n = 0.48 Treatment objective = 0.005 mg/L TCE Flow rate = 378.5 L/min (100 gal/min) Assume that no other solutes compete with TCE for adsorption onto the PAC, and that the PAC is saturated at the treatment objective.1-What is the Environmental significant of solids? 2-Discuss possible sources of solids in ground water and surface water. 3-Total suspended solids are mostly responsible for of water. ---- ---- a. Turbidity b. Colour c. Odour d. Taste 4-Always the total suspended solids value will be the total solids value. --- --- 5-High total dissolved solids indicates lower level of hardness. True or false? 6-“Groundwater usually has higher dissolved solids and surface water usually has higher suspended solids"- Explain. 7- Why water is evaporated at 103°C rather than 100 °C in experiment of solid of water?