Other

Mpr Services, Inc.

Peragen Systems, LLC

Mark K Vineyard

John Paul Walton

Robert L Moison

Frederic E Budde

John R Walton

Peracetic acid in aqueous liquid solution or vapor phase is prepared on-site and on-demand in a continuous process. Peracetic acid can be produced at a controlled rate to meet the demands of a downstream operation. In one embodiment, a pipe-line reactor and distillation column is used for the production of peracetic acid. In another embodiment, an apparatus includes a continuous pot reactor and distillation column for producing peracetic acid. The present invention has the potential of providing a much safer source of aqueous peracetic acid than currently available processes, due in part to the limited inventories of reactants in the reactor, particularly those in the vapor phase.

Continuous process for on-site and on-demand production of aqueous peracteic acid

Spent caustic and other wastewater streams are pretreated by continuous chemical oxidation. According to one aspect, a wastewater stream is pretreated by continuous chemical oxidation in a plug flow reactor. According to another aspect, a catalyst and an oxidizer are fed into a wastewater stream at first and second predetermined points of addition. Compounds in the wastewater stream susceptible to chemical oxidation are reacted with the chemical oxidizer. A modular, optionally fully automated apparatus is provided for pretreating spent caustic and other wastewater streams.

Method and apparatus for pretreatment of wastewater streams by chemical oxidation

A swimming pool alarm system which is responsive to the height of waves resulting from unauthorized entry, and which includes provision for changing its sensitivity. An alarm circuit is provided with a switch having a plurality of stationary contacts spaces apart as a function of wave height, and another contact movable by a float positioned in the water. A switch is provided to select the stationary contact which corresponds to a preselected wave height of interest.

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Houston, TX, United States of America

Mark K Vineyard