Describe a South African example on the re-use of sludge from pit latrines
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A: Calculation of Mid span deflection of Beam and Direction #####
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Q: For the given structures, determine the degree of indeterminacy. 1.
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Q: Find the inflow, outflow and ∆?, in m3
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Q: 15 kN/m 6m 150 kN m B 50 kN C
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Q: QUESTION 2 For the element shown in Figure q2, the nodal displacements are given as: u₁ (1.5 mm), v₁…
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Q: 1. Find the centroid of the area bounded by the curves y^2=x and x=4.
A: Note:- Hi! Thank you for the question As per the honor code, We’ll answer the first question since…
Q: nswer: max max 11 Vx1 = Mx1= ) Vx2 = Mx2 = KN kN•m KN kN•m kN kN.m
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Q: 4. A simply supported beam of length L = 10 m with a concentrated force F = 30 kN applied at the…
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- What is the standard level of potassium concentration that can be found on wastewater ?This question about Sanitary Engineering ........................ involve a physical change such as screening, grit removal, Separation, Crystallization, Evaporation, Filtration, & other reactions. • A. Unit operations • B. Unit processes • C. Both A and B • D. None3. Circular clarifiers are used to remove solid materials from water. They allow continuous treatment of water and can handle fairly large flows. Solids settle to the bottom of the clarifier and are carried away by a small stream of water (the waste stream). Most of the water exits the tank as treated effluent. Assume a clarifier receives a flow of 0.10 m3/s with a solid concentration of 800 mg/L. If the waste stream consists of 3% of the incoming flow and carries 90% of the incoming solids, a) what is the solids concentration in the waste stream, and b) what is the solids concentration in the treated effluent?
- Explain the following terms as used in sludge processing:a) Alkalinity,b) Hydraulic detention time,c) Solids retention time,d) pH,e) Temperature,f) Gas production.Sanitary Engineering laboratory "jar test " Write the significance of pH in coagulation using alum. Discuss the importance of finding the optimum dosage.6. A tertiary treatment plant treats a municipal secondary effluent and is to employ fixed-bed carbon adsorption columns. Parallel treatment using two rows of two columns in series (in other words, a total of four columns) will be used. From batch-type slurry tests it has been found that 0.42 g COD/g carbon is adsorbed when Ce = Co. Pertinent data are as follows: flow = 5700 m³/d, COD in feed to carbon columns = 20 mg/L, contact time function based on an empty carbon bed = 30 min, and unit liquid flow rate= = 4.4 L/s-m². Each column is kept on-line until the entire mass of carbon in the column is completely exhausted. Determine: The volume of each column, m³. a. b. Page 2 of 3 C. d. e. The diameter and height of each column, m. The mass of carbon in each column if the packed density is 400 kg/m³. The kilograms of carbon exhausted per day if the COD removed is assumed to be 98%. The on-line time for each of the columns.
- Example (Activated Sludge Process) - Completely Mixed with Recycle A completely mixed activated sludge process, treating a municipal wastewater, has a primary clarifier effluent BOD, of 135 mg/L. The design MLSS is 3590 mg/L, and the MLVSS is 80% of the MLSS. The plant permit is for an effluent BOD, of 20 mg/L and 20 mg/L suspended solids. The effluent suspended solids have a BOD, of 0.65 mg BOD, / mg suspended solids. The underflow solid concentration (MLVSS) is 10,000 mg/L. If umax = 3.0 day, Ks 60 mg/L, Y= 0.50 mg MLVSS / mg BOD, removed, ka= 0.1 day, and the influent flow is 0.25 m/sec, determine the following: 1. The required reactor detention time, 0. 2. The reactor basin volume, V, in m³. 3. The net waste activated sludge produced each day (kg/day). 4. The mass of solids (both volatile and inert) to be wasted each day (kg/day). The return sludge flow rate the recycle ratio. 6. The F/M ratio. 7 June 2021 Dr. Dawood Eisa Sachit Biological Wastewater Treatment 47Southide Water Treatment Plant of Tyler, TX What are the general characteristics of the waste water entering the plant?An impellar blade unit operates at 50 rpm. Determine the degree of mixing? Also if the blade operates from 50 rpm to 100 rpm what is the percent increase?
- Evalaution sof aggregates Sources.a) Draw a neat sketch of Activated Siudge Process and discuss how SVI, return sludge wasted sludge and organic load effect the design of aeration tank in activated sludge process?Indicate two solid waste transfer station types that are most advantageous and write down their advantages.