Liquid purification or separation – Processes – Chemical treatment
Reexamination Certificate
2006-01-31
2009-08-25
Smith, Duane (Department: 1797)
Liquid purification or separation
Processes
Chemical treatment
C210S744000, C210S746000, C210S749000, C210S765000, C210S097000, C210S101000, C210S109000, C210S134000, C210S150000, C210S220000, C210S221200, C210S259000, C261SDIG075
Reexamination Certificate
active
07578942
ABSTRACT:
In wastewater treatment equipment, a surfactant is added to a micronanobubble reaction vessel3by using a surfactant pump8and a surfactant tank9which constitute a surfactant adding section. Thereby, a micronanobubble generator4stably and efficiently produces micronanobubbles in the treatment water as raw water containing the surfactant in the micronanobubble reaction vessel3. Thus, the micronanobubbles make it possible to efficiently pretreat the wastewater introduced into the micronanobubble reaction vessel. Consequently, it becomes possible not only to enhance efficiency of wastewater treatment but also to reduce a treatment load on wastewater treatment equipment14in a step subsequent to the pretreatment. Thereby, scale of the wastewater treatment equipment14is reduced.
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Chuhjoh Kazumi
Uda Keichiro
Yamasaki Kazuyuki
Durand Paul J
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
Smith Duane
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