l21 sludge · 2011-04-05 · engineering. 2nd ed. boston, ma: pws publishing company,1996, p. 631....
TRANSCRIPT
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CiVi + CiUb
CiVi
CiUb
Ub
CLUb
SF
L=
CL
VL
+ C
LU
b
Ci CL Cu
Underflow flux
Limiting flux
Gravity flux CLVL
Soli
ds
Flu
x, kg/m
2 . h SFL
Solids Concentration, mg/L
Total flux
Figure by MIT OCW.
Adapted from: G. Tchobanoglous, F. L. Burton, and H. D. Stensel. Wastewater Engineering: Treatment
and Reuse. 4th ed. Metcalf & Eddy Inc., New York, NY: McGraw-Hill, 2003, p. 823.
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Scraper
Supernatant
Supernatant trough
Rotation
Feed Sludge
AA PLAN
Figure by MIT OCW.
Super
nat
ant
Inlet Well
Weir
Feed Sludge
Thickened Sludge
Pickets
GRAVITY-TYPE SLUDGE THICKENER
B Elevation
Figure by MIT OCW.
Adapted from: Reynolds, T. D., and P. A. Richards. Unit Operations and Processes in Environmental
Engineering. 2nd ed. Boston, MA: PWS Publishing Company,1996, p. 631.
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Pressure Reducer Air
Pressurizing Pump
Influent
Recy
cle Flo
w
Schematic Diagram of a Dissolved-Air Flotation System
Float Collector
Flotation Tank
Baf
fle
Effluent
Sludge Discharge
Air-Dissoltion
Tank
Figure by MIT OCW.
Adpated from: Viessman, W., Jr., and M. J. Hammer. Water Supply and Pollution Control. 7th ed.
Upper Saddle River, NJ: Pearson Education, Inc., 2005, p. 678.
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Gear Box
Port (adjustable)
Cover
Feed Solids
Rotating BowlRotating Conveyor/Scroll
Thickened Solids
Thickened Solids
Main Drive
Sheave
Centrate
Feed Ports
Schematic Diagram of a Centrifuge Used for Sludge Thickening
Differential Speed
Centrate Discharge
Discharge Port
Figure by MIT OCW. Adapted from: G. Tchobanoglous, F. L. Burton, and H. D. Stensel. Wastewater Engineering: Treatment and Reuse.
4th ed. Metcalf & Eddy Inc., New York, NY: McGraw-Hill, 2003, p. 1469.
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Gravabelt
Komline-Sanderson12 Holland Av Peapack, NJ 07977-0257 908-234-1000 Fax: 908-234-9487 800-225-5457 [email protected]
www.komline.com
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Figure by MIT OCW.
Adapted from: WEF. "Wastewater Treatment Plant Design. Water Environment Federation."
Alexandria, Virginia, 2003.
Belt washwater
Belt filtrate & washwater
Thickened solids pump
Thickened solids hopper
PlowsFlocculation well
Polymer
Solids
Variable orifice inline mixer
Adjustable ramp
Filtrate
Belt
Polymer injection ring
GRAVITY BELT THICKENER SCHEMATIC