endobj endobj /Linearized 1 These spreadsheets are set up to make the solids mass balance calculations for four iterations. 1.

Group of answer choices True False, Which of the following are characteristic of urban sprawl? Bengtson, Harlan H., Activated Sludge Solids Mass Balance Spreadsheet, an online blog article. The screenshot below shows typical influent and effluent inputs needed. 0000003448 00000 n << 1582 0 obj The screenshot below shows a set of tables summarizing the results of the calculated recycles flows from the first three iterations of the activated sludge calculations. To draw a graph for y = 3/4x + 7, a person can draw a point at x of 0 and y of ___, a second point by going over 3 and up ___, and then draw a line through the points. .>Vt8|(J/a.!}6WRHL0:(["$D=q/o^B`a. Select all that apply. !! Obtain a convenient, easy to use spreadsheet for solids mass balance activated sludge calculations for only $22.95. 0000003671 00000 n endobj xWmoH(FddzD F#>4vN.N&qpw=O=Uv~u{=ckLC7\?.wl3ssq8Oqs X7}OipjM@k4Xs;t7OBr1_K",N7Yw[5=O6]a|{ A: 2009_Prof Eng_WWTP design excel.xls - Spreadsheet for the optimized design of a conventional activated sludge system for secondary treatment Copyright, Spreadsheet for the optimized design of a conventional activated sludge system for secondary treatment, Copyright 2007 - JGM van der Lubbe and Adrianus van Haandel, System configuration consists of an aeration tank, final settler, sludge thickener and anaerobic digester, It is assumed that nitrification does not develop, 1. Physics for Scientists and Engineers with Modern Physics, Physics for Scientists and Engineers: A Strategic Approach with Modern Physics, The Physics of Everyday Phenomena: A Conceptual Introduction to Physics. Spreadsheets are available to make this type of solids mass balance calculations in either U.S. or S.I. 0000011484 00000 n <> endobj Topic: APA 1. /H [ 912 272 ] 0000003554 00000 n trailer The screenshot below shows typical inputs and outputs for a solids mass balance over a sludge thickener. <> endobj Adult students are frequently motivated to return to school(Alex et al., 2005) b. 1581 19 /Filter/FlateDecode >> /L 892826 endobj Examples are sludge thickener overflow, anaerobic digester supernatant, aerobic digester supernatant, centrate from centrifuge dewatering, and filtrate from filtration dewatering. Want to read all 9 pages. Course Hero, Inc. /Prev 861149 housing long distances from urban center houses spread out (low density on land surface) housing is inadequate and, Indicate which of the following issues is associated with urban heat island effects? Read on for information about the use of an Excel spreadsheet for estimating the effect of recycle flow, BOD and TSS through solids mass balance activated sludge calculations. If cells B1, C1, and D1 were selected, and autofill used to fill E1, F1, and G1, what would be the auto-filled values? > Z Y g2 \ p Gail Skowronek B a = = x !8 X@ " 1  A r i a l 1  A r i a l 1  A r i a l 1  A r i a l 1 A r i a l 1 $ A r i a l 1  A r i a l 1 @  A r i a l 1  A r i a l 1  A r i a l 1 A r i a l 1 A r i a l 1 A r i a l 1 4 A r i a l 1 A r i a l 1 A r i a l 1 A r i a l 1 , 8 A r i a l 1 8 A r i a l 1 8 A r i a l 1 > A r i a l 1 4 A r i a l 1 . 1581 0 obj Course Hero is not sponsored or endorsed by any college or university. This type of calculation is illustrated in an eight page example in Metcalf and Eddy (Reference #1). 1584 0 obj x+ r rendstream 1585 0 obj This preview shows page 1 - 4 out of 9 pages. z?~lffkqxv*As7k{@dN,-,Rk7aFK5 As 1583 0 obj

Jxj]28)jeL=A/c14{] G2$i!4 !D6$4h$h-j|R5$Tqz-q 8_m8cC Y!!|2 J"G=ck*O3tcPl K'%Fmv"/>v[i']8mt$~#6Ag(iXf0,v1n3DH_DE>E. 0000001425 00000 n Similar calculations would be made for each of the wastewater treatment and sludge treatment/management processes, leading to information about recycle flow rate, BOD load, and TSS load, for each recycle stream as shown in the summary tables in the next section. 0000004027 00000 n >> 9 /E 111119 The liquid flow, BOD load, and TSS load in these recycled streams contribute to the wastewater flow to be handled by the mainstream wastewater treatment processes. >> startxref endobj >> units at a very low cost (only $22.95)inour spreadsheet store. stream 0000078977 00000 n Solids Mass Balance Activated Sludge Calculations for Each Treatment Process. 1599 0 obj 0000004128 00000 n 2 0 obj General information about the wastewater influent flow and characteristics will need to be input to the spreadsheet along with information about target effluent characteristics. The flow diagram below shows a typical set of sludge treatment processes and recycle flows for an activated sludge plant. Metcalf & Eddy, Inc, (revised by Tchobanoglous, G, Burton, F.L., Stensel, H.D.,Wastewater Engineering Treatment and Reuse, 4th Edition, New York, NY, 2003. An iterative solids mass balance is an organized procedure for estimating the total flow rate, BOD load, and TSS load in the recycled flows from sludge treatment and handling processes. Cells B1, C1, and D1 contain the values Seat1Row1, Seat2Row1, and Seat3Row1. >> /T 861160 0000000015 00000 n /O 1583 <> << /S 454 /Length 190 <> Terms. 0000001513 00000 n % 1 0 obj 4$+Ay -+``pAAKT$ 5G B - Optimization of the System Consisting of Sludge Thickener and Anaerobic Digester, (b1) Determine the optimum thickened sludge concentration. For Excel solids mass balance spreadsheets to make activated sludge calculations calculations,click here to visit our spreadsheet store. D)48 bu 9lvfI~6lMW{j78%ngIb-`;%NVYEk\}8'Vi^I4T.BUraYj^]j$c^+ Dpe'J_ pLlt V Solar concentrating power systems cannot generate electricity after the sun goes down. 0000003922 00000 n stream xref

0000000912 00000 n 4 0 obj <> %%EOF Enter in the cell to the left the value of Xt for which the construction costs are mimimum !! heat stroke & heat exhaustion increased VOCs from vehicle emissions increased ozone production they are a. /N 41 xc````` @1F,0M 3 0 obj

0000000702 00000 n 0000001184 00000 n 2. For a wastewater treatment plant with the flow diagram shown above, there would need to be solids mass balance calculations for the primary clarifier, the aeration tank/secondary clarifier, the sludge thickener, the anaerobic digester, and the sludge dewatering process. <>>> 0 %PDF-1.6 stream %PDF-1.5 <>/XObject<>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> End of preview. << Low Cost Easy to Use Spreadsheets for Engineering Calculations Available at Engineering Excel Spreadsheets, click here to visit our spreadsheet store, Activated Sludge Solids Mass Balance Spreadsheet, Heat Exchanger Design and Heat Transfer Coefficients, Wastewater Metal Precipitation Spreadsheet, Wastewater Screening Calculations Spreadsheet, Lamella Inclined Plate Clarifier Design Spreadsheet, Lamella Inclined Plate Clarifier Design Spreadsheet - Low Cost Easy to Use Spreadsheets for Engineering Calculations Available at Engineering Excel Spreadsheets, Lamella Clarifier Design Calculation Excel, Excel Spreadsheets For Piping Calculations, API 570 Piping Inspection Calculations Spreadsheet, Flow Through Non Circular Ducts Spreadsheet, MBBR Wastewater Treatment Design Spreadsheet for BOD Removal. >> of2\T`7q5` @+@x~W2c*Y3=(oqmbqKdl2_ *nW6"|ZW >TkQoa-/zKRis!bw\~f.G:1D4u:ho;jJ8D@fc[\+-V]qjB$yj*2knsU/jC`3PWu.S*ro@H9>ZUP endobj <> The next step is solids mass balance calculations for each of the treatment processes, leading to estimates of the recycle flow rate, BOD load and TSS load for each recycle stream. endstream a. 0000003819 00000 n stream Privacy 0000011507 00000 n After completion of the first iteration, the recycle flowrate, BOD load and TSS load are added to values for those parameters for the incoming wastewater and all of the solids mass balance calculations are repeated in a second iteration. Which of the following examples includes a properly formatted in-text citation for a paraphrase? General data for the activated sludge system, COD removal is substantially complete at lower values of Rs: higher value is required to obtain a sludge that settles well, A - Optimisation of the System Consisting of the Aeration Tank and the Final Settler, (a1) Calculate the sludge mass that will develop, This textbook can be purchased at www.amazon.com, (a2) Determine the optimal sludge concentration in the aeration tank. 0000001533 00000 n /Root 1582 0 R 1586 0 obj Several streams from sludge treatment processes are typically recycled back into the wastewater treatment plant inflow. /Size 1600 Course Hero member to access this document, Complete Water Supply Treatment Plant Design Spreadsheet.xlsx, Western Sydney University CONSTRUCTI 2607, University of Cape Town CHEMICAL E CHE2005W, Tenth of November Institute of Technology, ENEN 663 Lecture 5 Activated Sludge Process.pptx, Mehran University of Engineering and Technology, Tenth of November Institute of Technology BIO MISC, Jimma University, Jimma CHEMISTRY PHYSICAL C, Mehran University of Engineering and Technology BS MISC, Copyright 2022. xZ[o~7/h48Z$H[>2m-i]RrCK3sf67z}\oozzo_^o]\e7g+f7g[B\jVnrgX;>-=/u}S_9w~`-[IfoYC;'tC94'0(rC5vp#TRa =yP\%/E,[vKG~+ % !>ykB s=:WkP"+7>B`r1xF7a. tL *}N..p$) 9n.xP`$oTtBU2Rje$Vh {bcl:?MPRuw]vN #Y5M,\RO~j^'TuT&!\Q,I-X(vYH5MX>UX|QP"J.ImVa=@)G(c 0000079001 00000 n 0000003471 00000 n /Info 1580 0 R UzpaA/UXXb!Uv[gB~1A#D h/(%T_537)>g:[\vFhN-dZ),M"'@9X|):1%,mbb)T sBctr2'Dg~z Uamr ?v5{q^a{04/(& [b6_y62) qv. endobj

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