Treatment of wash water in paint spray booths

Details Treatment of wash water in paint spray booths Treatment of wash water in paint spray booths

C - Chemistry, Metallurgy

02

F

149/12.1, 362/65

C02F 1/66 (2006.01) C09D 7/00 (2006.01)

Patent

CA 1233735

A B S T R A C T TREATMENT OF WASH WATER IN PAINT SPRAY BOOTHS To control build-up of paint in the water tank an alkaline liquid containing NaOH is added in quantities to maintain a pH not substantially less than 9, thus preventing corrosion, and a hydroxide ion concentration not exceeding 0.01M. The additive is introduced by a metering pump under the control of a programmed timer over a seven day cycle. Over half the amount to be added in the cycle is introduced as a single discrete dose (preferably before a weekend) and the rest as smaller doses at intervals.

472573

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