Anaerobic Technology
Wastewater Treatment
Anaerobic Technology

Modified Upflow Anaerobic Sludge Bed (UASB) Process

Modified Upflow Anaerobic Sludge Bed (UASB) Process

ITRI's up-flow anaerobic sludge bed (UASB) process is highly efficient in treating high strength organic wastewater. Organic pollutants are bio-degraded and transformed to biogas which is separated by a specially designed gas-liquid-solids separator and collected for energy use. 


Schematic diagram of UASB reactor (type1) 

Schematic diagram of UASB reactor (type2)

More Information


ITRI's UASB technology has been applied to industrial wastewater treatment including food processing, distillery, chemical processing, pulp and paper, petrochemical, and optoelectronics industries.



• Low investment cost (land requirement and construction cost)
• Low operating cost (power, chemical requirement and sludge yield)
• Potential energy recovery (methane)
• CN 98250342.3
• TW 100697, 122668, 106109, 156653 

UASB reactor for petrochemical wastewater treatment

Full-Scale Applications of UASB

Note: UASB technology has 47 full-scale applications, The first case was completed on 1988. Only recent cases are listed here.

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Dr. Chang, Kuan-Foo
Tel : 886-3-5732642
Fax : 886-3-5732349
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