ported on ine analysis of natural organic matter (NOM) per Peninsula of Michigan. The creek water was at a pH g C/L. Researchers had run a large quantity of water thr (RO) filter and a cation-exchange column (like a water-s n the RO filters from clogging with Caco The

ported on ine analysis of natural organic matter (NOM) per Peninsula of Michigan. The creek water was at a pH g C/L. Researchers had run a large quantity of water thr (RO) filter and a cation-exchange column (like a water-s n the RO filters from clogging with Caco The

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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Integrated Solid Waste Management

Integrated Solid Waste Management (ISWM) is a thorough waste suppression, compost, removal and recycling Program. An effective ISWM system considers how to suppress, manage and recycle solid waste in a manner that is most efficiently to protect human health and the surrounding. ISWM system requires evaluation of public wants and demands and then selecting and merging the most effective waste management activities for the proposed demands. The main ISWM activities for solid waste management are Waste prevention, Recycling and Composting, and Combustion and Removal and waste collection in a properly planned, constructed, managed and mitigated landfill areas. Each of these requires careful designing, financing, accumulation, and delivery of activities.

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2.3 You have been asked to design a circular de-chlorination basin for 2 MGD treated wastewater. If use Na2S2O3 and the depth of the tank is to be 4.5 ft, what would you suggest the diameter of this tank? a) 50 ft c) not enough information 2.4 Alum required for a 1.5 mg/L dose and for a plant treat 10 MGD of drinking water is: a) 68.3 Ib/day b) 42 ft b) 125.11b/day d) no need for tank c) 62.6 Ib/day = d) 72.8 Ib/day
Poorly treated municipal wastewater is continuously discharged directly into a lake. The discharge from the wastewater plant into the lake occurs at a flow of Qd = 1 m3/hr. The concentration of phosphate (PO43, M = 95 g/mol) in the discharge flow (Cxd) that is decaying with first-order kinetics is 100 mg/L. The lake is a well-mixed water body of 100 m3. (Phosphate is naturally uptaken by algae with a first- order decay rate constant equal to 0.20/day.) The concentration of phosphate in the incoming river (Cx,r) is 10 mg P/L. The incoming river flow rate is Q, = 10 m3/hr. %3D a) Which of the following equations represent the correct mass balance equation? O va = CxQr - CxdQd -QoutCxvout" kCx,outV %3D O 0 = Cx,Qr + CxdQd -QoutCxvout" kCx,outV X,r O 0 = CxQr + CxdQd -QoutCxvout- kV O 0 = Cx,dQr + Cx,,Qd -QoutCxout- kCxoutV
A Granulated Activated Carbon (GAC) adsorption laboratory column 10cm in diameter and 3m deep, is found to produce good results in COD removal when operated at a flow of 50L/h. The porosity of the GAC is 0.5 Calculate the following: The application rate in m/h. The residence time, t, in the column. The volumetric flow rate, Vb, in bed volumes per hour, for this residence time. You need to design a GAC system consisting of two columns in series for treating the same water at a rate of 0.5 ML/d. Practical considerations limit the diameter of the columns to 3m. Calculate the minimum required height of the columns.
Note:hand written solution should be avoided.
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Wastewater is treated with an activated sludge plug flow reactor, similar to one seen at the Norman Water Reclamation Facility. The BOD5 after primary treatment is 100mg/L and the effluent limit is 5 mg/L BOD5. Use 1.00 h-1 as the maximum specific growth rate constant and typical values for the other biokinetic constants. The biomass concentration in the reactor is 2,500 mg/L MLSS based on a recycle ratio of 1. Calculate the mean cell residence time, in hours for this system
Please ans a and b