Liquid purification or separation – Processes – Treatment by living organism
Patent
1993-03-19
1994-04-12
Upton, Christopher
Liquid purification or separation
Processes
Treatment by living organism
210626, 210631, 210668, 210669, 210694, 210756, 210758, 210759, 210760, C02F 900
Patent
active
053022882
ABSTRACT:
The invention is a process for purifying wastewater containing organic and color-causing pollutants. The three unit processes include a first stage aerobic or anaerobic biophysical treatment, a second stage oxidizer treatment, and a third stage adsorbent contact treatment. The biophysical treatment removes the majority of the pollutants while the oxidizer treatment destroys residual organics and color-causing pollutants. The adsorbent contact treatment destroys any residual oxidizer in the wastewater and/or adsorbs any residual oxidation products. The preferred adsorbent is powdered activated carbon and the preferred oxidizer is some form of chlorine, e.g. sodium hypochlorite. The process may be operated in either a continuous flow mode or a batch flow mode.
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Meidl John A.
Vollstedt Thomas J.
Randall Tipton L.
Upton Christopher
Zimpro Environmental Inc.
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