Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Electrophoretic Waste Treatment of Cupric Hydroxide

IP.com Disclosure Number: IPCOM000084454D
Original Publication Date: 1975-Nov-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Solomon, JM: AUTHOR [+2]

Abstract

The start-up of an industrial waste-water clarifier produces some special problems. For example, at restart of flow through the clarifier, copper may be released in excess of the amount desired.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Electrophoretic Waste Treatment of Cupric Hydroxide

The start-up of an industrial waste-water clarifier produces some special problems. For example, at restart of flow through the clarifier, copper may be released in excess of the amount desired.

The reason this copper is released is that the deep blanket of sludge precipitate in the reaction zone of the clarifier removes finely divided cupric hydroxide precipitate by physical retention. During shutdown the blanket falls. Consequently, the filtration action on the finely divided copper is impaired sufficiently so that some of it escapes.

This problem can be eliminated by introducing an electric charge into the cupric hydroxide particles by electrophoretic action.

The charged particles will then migrate in the electric field to an electrode. The electrode can include a permeable physical membrane such as cellulosic paper nylon or cellulose acetate, thereby removing the particles from the clarifier waters.

1