Liquid purification or separation – Processes – Chemical treatment
Reexamination Certificate
2004-06-18
2008-10-07
Barry, Chester T. (Department: 1797)
Liquid purification or separation
Processes
Chemical treatment
Reexamination Certificate
active
07431850
ABSTRACT:
There is provided a process for purification treatment of wastewater containing an organic substance. There is provided a process for purification treatment of wastewater containing an organic substance by carrying out supercritical treatment or subcritical treatment, which comprises subjecting the wastewater to at least one solid-liquid separation pretreatment selected from separation treatment with a flocculant, sedimentation treatment, flotation treatment and filtration treatment; and then subjecting the wastewater to primary treatment as biological treatment; and subsequently purifying the wastewater by treatment including secondary treatment as supercritical treatment or subcritical treatment.
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Urano et al., Applications of High-Temperature and High-Pressure Water Reaction to Wastewater Treatment, Proceedings of Fifth International Symposium of Waste Management Problems in Agro-Industries, table of contents and pp. 359-364 (Shiga, Japan, Nov. 16-18, 2001).
Imai Genji
Miyata Naonori
Okajima Izumi
Sako Takeshi
Barry Chester T.
Fitch Even Tabin & Flannery
Kansai Paint Co. Ltd.
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