Biological process for groundwater and wastewater treatment

Details Biological process for groundwater and wastewater treatment Biological process for groundwater and wastewater treatment

1990-07-10

1995-09-19

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210621, 210626, 210631, C02F 312

Patent

active

054513200

ABSTRACT:
A physical-biochemical process system and apparatus for removal of toxic volatile organic compounds (VOCs) and other organics from contaminated groundwater or wastewater is described. This process system involves influent pumping groundwater or wastewater treatment by air stripping, biological oxidation and powdered activated carbon (PAC) adsorption in an enclosed gas stripping bioreactor, air purification by granular activated carbon contactor, and recycling of GAC-purified air for further groundwater or wastewater treatment. The bioreactor effluent is processed processed by a clarifier, a filter and a disinfection unit. The clarifier sludge is partially recycled to the bioreactor and partially wasted. The process system is cost-effective and eliminates the problem of secondary air contamination caused by conventional gas stripping tower and coventional biological treatment processes.

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