13.1 The settled sludge from coagulation of a surface water is 1.5% solids, of which 30% are volatile. Compute the specific gravity of the dry solids and specific gravity for the fixed matter and sludge. Assume specific gravity values of 2.5 What is the volume of waste in cubic meters per 1000 kg of dry solids? of the wet 1.0 for the volatile.
Q: A well is being drilled at a vertical depth of 12,200 ft while circulating a 12-lbm/gal mud at a…
A: The density of the kick material, assuming it is a slug, is 5.28 Ibm/gal.The density of the kick…
Q: A +1.512% grade meets a -1.785% grade at PVI Station 31+50, elevation 562.00. The Equal Tangent…
A: Given:-The initial grade of the curve = +1.512%The final grade of the curve = -1.785%The station of…
Q: How can abandoned downtown historic buildings be reutilized for rural healthcare purposes?
A: The objective of the question is to explore the possibilities of reutilizing abandoned downtown…
Q: If the resultant force acting on the bracket is required to be a minimum, determine the magnitude of…
A: Determine the magnitude of F1 such that the resultant force acting on the bracket is minimum.
Q: (a) (b) T T (c) (d) (e) T A 6 kN box is suspended as shown in the figure by several ropes and…
A: A 6 kN box is suspended as shown in the figure by several ropes and pulleys. For parts (b) and (d)…
Q: SAMPLE PROBLEM c) 150 kN 150 kN Determine the force in F members DE and CF of the truss and state if…
A: The force in member DE = 141.421 kN ( Compression )The force in member CF = 240.416 kN ( Compression…
Q: 4. Given the following data of prestressed rectangular beam Beam dimension; b x h = 300 mm x 600 mm…
A:
Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…
A: Determine the force in the members CE, DE and DF.
Q: Question 3
A: The answer is attached in detail below; please check. Explanation:Step 1:Ans (a): Types of Concrete…
Q: Determine the magnitude, direction/sense, and location of the resultant force on the beam shown…
A:
Q: 6- Maximum annual rainfall depth data are fitted with a distribution that is positively skewed…
A: 6) The right option is(A) Strictly less than 4.22 in. 7) The right option isC) 190…
Q: For the geometric characteristics, traffic conditions (traffic volumes are in vehicles per hour) and…
A: thank youExplanation:Step 1:Step 2: Step 3: Step 4:
Q: Problem 3: Use Ampere's Law to determine the magnetic field (everywhere) for two planes that extend…
A:
Q: Determine the reduced nominal moment capacity (φ Mn) of a 10-inch wide by 16- inch deep reinforced…
A: To determine the reduced nominal moment capacity (φMn) of the reinforced concrete beam, we need to…
Q: when flowing through the same rock at 20°C? want weight = 8.44 kN/m³) 6.10 The maximum dry unit…
A: Given data - Relative compaction = 90% Max. dry unit weight in lab = 16 KN/m3 Gs = 2.7 k1 = 0.03…
Q: A common passenger car has two single axles with 2-kip load on each. A truck has tandem axles and…
A: Given:Passenger car load per single axle (P1) = 2 kipTruck tandem axle load (P2) = 48 kipTruck…
Q: Compute the runoff from a 5-in. rainfall from a watershed which has four soil groups overall and the…
A: P = 5 in Fair grass cover before urbanization
Q: An existing levee has a top width of 10 feet, a top ele- vation of 10 feet above the base, and 3:1…
A: The objective of the question is to calculate the additional land space required for the base of the…
Q: A ball of 1lb is sliding around in a circular path with a speed as shown. If the attached wire is…
A: To solve this problem, we can apply the principles of conservation of angular momentum and…
Q: ider the feasibility of treating the wastewater from the town of Nancy (Problem 12.31) in a…
A: Using high-density cross-flow media, we may compute the soluble effluent BOD and the predicted…
Q: H.W-1 Determine the speed at which the basketball at A H must be thrown at the angle of 30° so that…
A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…
Q: A 1.5" high by 2" wide rectangular bar is attached to a channel section by 3/8" diameter mach screws…
A:
Q: The conveyor belt is moving at 4 m/s. If the coefficient of static friction betweenthe conveyor and…
A: The shortest time in which the belt can stop so that the package does not slide on the belt is 2.04…
Q: 4.73 The beam consists of two bars connected by a pin at B. Neglecting the weight of the beam,…
A: A beam is given with a fixed support at left end A and a roller support at right end C, there is…
Q: The magnitude of resultant force, FR is: FR= Number lbs The angle of the resultant force as measured…
A:
Q: 7.24 Vehicles arrive at an approach to a pretimed signalized intersection. The arrival rate over the…
A:
Q: A column with a wide-flange section has a flange width b� = 400 mmmm, height hℎ = 400 mmmm, web…
A:
Q: Table 2.1 Activity Predecessor Duration (Months) A 5 B A 7 с A 8 D B, C 9 E D 6 F G D 7 E, F 5 ata…
A:
Q: A material has the following properties: Sut = 400 MPa and n = 0.25. Calculate its strength…
A:
Q: A retaining wall with a brick face is 70 feet long and 12 feet high. The size of running bond bricks…
A: 2.5 in x 3.75 in x 8 in brick size3/8 in mortar
Q: Problem 2: calculate the effective stress at points A, B, and C. 0 Soil 1 = 105 pcf VINI 20 20 550…
A:
Q: for each increment of the richter scale the energy of an earthquake increases by a factor of about…
A: To determine:Factor by which energy of an earthquake increases due to unit increment of the Richter…
Q: 1. A short rectangular reinforced concrete column 500 mm wide by 700 mm deep contains 8-28 mm…
A: Note : Since you have posted a question with multiple sub-parts, we will solve the first three…
Q: 6-1 Draw the shear and moment diagrams for the shaft. The bearings at A and B exert only vertical…
A:
Q: Please help with the following
A: No, the driver should not appeal the ticket since he was going 64 mi/hr.Explanation:…
Q: Determine the ultimate bearing capacity of a 1.3 m wide strip footing foundedat a depth of 1m below…
A: The objective of the question is to calculate the ultimate bearing capacity of a strip footing. The…
Q: Do it
A:
Q: The given cross-section represents a built-up member made of A572 Gr. 42. The section is to be used…
A: Please refer below pages.If you have any doubts please feel free to ask.Explanation:Step 1:Step…
Q: Problem The saturated soil specimen shown below has a permeability of 0.005 cm/sec, a porosity of…
A: The image allows you to calculate properties of water flow through the soil. Here's a…
Q: A horizontal bar 2.281 m long with a mass of 84.55 kg is hinged to a wall. The bar is supported from…
A:
Q: A handle is rotated using two forces, P and 150 lb, and a moment of 875 lb-ft as shown below.…
A: Detailed solution is given below, still if you have any query please feel free to contact me.Thanks…
Q: What is the value to use for 'b' in inches for the 22ft long T-Beams with center to center spacing…
A: Answer Explanation:
Q: x5 Q.1. An insurance office has leased a small building along a state highway with the following…
A: Total Space Available: The dimensions of the building are given as 40 feet x 50 feet. To find the…
Q: The horizontal support reactions for the following truss below are: 20 kN 30 kN 3 m Ax=0 kN and Bx =…
A: Determine the horizontal reaction of the truss.
Q: I cut into 3 segment. Area: 4*1= 4 in^2, 4*1= 4 in^2, 10*1= 10 in^2
A: Determine the moment of inertia of the "Z" section with respect to the x and y centroidal axes. Ix =…
Q: 3. City B lies 5.00 x102 km from city A in a direction 30.0° east of north. An airplane is required…
A: Step 1:Total distance is 5×102kmAngle is 30oTime is 2hrStep 2:a)The free body diagram of the air…
Q: 1. An isolated intersection is controlled by a two-phase pre-timed signal with the movements allowed…
A:
Q: 2. A plane element removed from a thin-walled circular tube loaded in torsion is subject to the…
A:
Q: 4.50 The homogeneous 18-kg pulley is attached to the bar ABC with a pin at B. The mass of the bar is…
A: M = 18 kg T = 600 N
Q: Energy and Atmosphere category Practice Questions 5. Which standard is referred to in LEED rating…
A: The correct option is d) American Society of Heating, Refrigerating, and Air-Conditioning Engineers…
Unlock instant AI solutions
Tap the button
to generate a solution
Click the button to generate
a solution
- A lagoon with volume 1200 m^3 has been receiving a steady flow of a conservative waste at the rate of 100 m^3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10mg/L. Assuming complete mix conditions, if the concentration suddenly increase to 100mg/L, what would the concentration in the effluent be 7 days later (after the sudden increase of input concentration)?A chemical waste at an initial SS concentration of 1200 mg/L and flow rate of 250 m3/h is to be settled in a tank, H = 1.5m deep, W = 8m wide, and L = 40 m long. Calculate the overflow rate, the velocity of the critical particle, and the hydraulic retention time.Determine the Aeration Basin Dimensions for a town of 200,000 population. Mixed Liquor Suspended Solids is 3500 mg/L. The BOD Loading rate is 0.48 kg/ (?3 –day), Sludge Volume Index is 120 mL/g; Return sludge is 35%; the concentration of BOD is 0.093 Kg/(Capita –day). Primary sedimentation tank removes 35% of BOD.
- The shrimp processing plant generates 0.012 m3/s of wastewater each day. The wastewater is treated in an activated sludge plant. The average BOD5 of the raw wastewater before primary settling is 1400 mg/L. The aeration tank has effective liquid dimensions of 8.0 m wide by 8.0 m long by 5.0 m deep. The plant operating parameters are as follows: Soluble BOD5 after primary settling = 966 mg/L MLVSS = 2000 mg/L MLSS = 1.25 (MLVS) Settled sludge volume after 30 min = 225 mL/L Aeration tank liquid temperature = 15°C Determine the following: Return Activated Sludge (RAS) flow rate and Wasting Activated Sludge (WAS) flow rate.A river traveling at a velocity of 10 km/day has a dissolved oxygen content of 5 mg/L and an ultimate cBOD of 25 mg/L at distance x=0 km, that is, immediately downstream of a waste discharge. The waste has a cBOD decay coefficient kl of 0.2/day. The stream has a reaeration rate coefficient k2 of 0.4/day and a saturation dissolved oxygen concentration of 9 mg/L. (a) What is the initial dissolved oxygen deficit? (b) What is the location of the critical point, in time and distance? (c) What is the dissolved oxygen deficit at the critical point? (d) What is the dissolved oxygen concentration at the critical point?A lagoon with volume of 1200m3 has been receiving a steady flow of a conservative waste at a rate of 100m3/d for a long enogh time to assume steady state conditions. The waste entering the lagoon has concentration of 10.0mg/l. Assume completly mixed conditions. a) What is the concentration of the pollutant in the efluent? b) The input was concentration of is suddenly increased to 100mg/l. Using sprreadsheet, compute and graph the concentration in the effluent over time. Show hand calculation for the effluent concentration 7 days after the change inpute waste concentration
- A coagulation treatment plant with a flow of 0.5 m3/s is dosing alum at 20 mg/l. Concentration of suspended solid is 25 mg/l. The effluent suspended solid concentration is 12 mg/l. The sludge content is 1 % and specific gravity of sludge is 3 %. What volume of sludge must be disposed of each day?A river traveling at a velocity of 12 km/day has a dissolved-oxygen content of 5.4 mg/L, and an ultimate CBOD of 32 mg/L at distance x 10 km, that is, immediately downstream of a waste discharge. The waste has a CBOD decay coefficient, ka, of 0.25/day. The stream has a reacration rate coefficient, k., of 0.45/day and a saturation dissolved-oxygen concentration of 9.5 mg/L. (a) What is the initial dissolved-oxygen deficit? (b) What is the location of the critical point, in time and distance? (c) What is the dissolved-oxygen deficit at the critical point?A landfill that is 12 ha in area has a liner of thickness 0.9 m. Each year 1700 m3 of leachate is collected. The hydraulic conductivity ofthe liner is 3.9 × 10-10 m · s-1. What is the head of water above the liner? Select one: a. 2 m b. 3 m c. 1 m d. 4 m
- Consider a well-mixed aeration lagoon to remove BOD from a waste stream flowing at 5MGD. The lagoon is 100-m long, 30-m wide and 3-m deep. Given the default microbial kineticparameters (Ks = 60 mg BOD5/L, μm = 3 day-1, kd = 0.06 day-1) calculate the concentration ofBOD5 in the waste stream leaving the lagoon.A coagulation treatment plant with a flowrate of 0.05 m3/s doses with ferric sulfate at 20.0 mg/L. No other chemicals are added. The raw water suspended solids concentration is 36 mg/L. The effluent suspended solids concentration is 1.0 mg/L. The sludge solids content is 1.05%. The specific gravity of the sludge solids is 2.5. What volume of sludge is produced each day?A reservoir of liquid waste has a mass of 1200 kg and volume of 0.952 m3. Find its : i. Weight ; ii. Density ; iii. Specific weight and; iv. Specific gravity