2. DOW UF Operation & Guidelines - sopurewater.com · DOW Ultrafiltration Operation and Design...
Transcript of 2. DOW UF Operation & Guidelines - sopurewater.com · DOW Ultrafiltration Operation and Design...
The Dow Chemical Company
DOW UltrafiltrationOperation and Design Guidelines
DOW UFOperation Modes
DOW UF Operation Philosophy
Filtration(20-60 min)
Air Scrub (20s)Backwash (40-60s)
Forward Flush (30-60s)(Physical Cleaning)
CEB (On-Line); Every 1-7 daysCIP (Off-Line); Every 1-12 months
(ChemicalCleaning)
DOW UF Operation Philosophy
ChemicalEnhancedBackwash
CIP
BW Trend
CEB Trend
Filtration (Dead-End Mode)
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
Filtration (Bleed Mode)
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
Air Scour
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
Gravity Drain
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
Backwash Top
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
NaOCl(optional)
Backwash Bottom
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
NaOCl(optional)
Forward Flush / Rinse
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
CEB Top
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
Chemicals
CEB Bottom
Ultrafiltrate
Raw Water
Filter100-300 m Air
BackwashPump
Feed Pump
Waste
BackwashTank
Chemicals
CIP Filtrate Side
Solution(up to 40C)
CIP Pump
Feed Side
DOW UFDesign Guidelines
DOW UF Design Guidelines