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Fluidized Bed Crystallization (FBC) Wastewater Treatment Technology

Fluidized Bed Crystallization (FBC) Wastewater Treatment Technology
Introduction

Fluidized bed crystallization (FBC) uses  silica sand as carrier to recover metal salts or inorganic ions from wastewater in crystal forms. Properly controlled recycle flow provides mixing to maintain sand fluidization. Control of chemical reagent addition provides appropriate super- saturation for crystal formation. Crystals are discharged when the size is grown to 1 to 2 mm in diameter. 

 

 

  
Schematic diagram of FBC reactor

 

 

More Information

Applications

• Fluoride-containing wastewater
• Arsenic-containing wastewater
• Water softening
• Phosphate / ammonium removal
• Heavy metal removal from wastewater

 

Features

• Remove inorganic ions from wastewater
• Reduce sludge production by 75%
• Recover valuable resources in crystal form
 

 

Patents

• US 6235203, 6210589, 7045066 
• NL 1004621, 1011698, 1014191,  
• CN ZL96213888.6, 03130727.2
• TW 088519, 122668, 143243, 161596, 189832
 
 

8000 m3/d FBC water softening plant for Taiwan Water Corporation
 

 

Crystals discharged from FBC system for  treating different wastewaters


Full-scale applications of FBC

 Note: FBC technology has 24 full-scale applications, The first case was completed on 1996. Only recent cases are listed here.

Contact

Dr. Lee, Mao-Sung 
Tel : 886-3-5732639
Fax : 886-3-5732349
E-mail : MaoSungLee@itri.org.tw

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