Water Wash Spray Booth:
1) Conventional Water Wash Booth
2) No pump water Wash Booth
Conventional water wash booth:
All water wash spray booths have a washing tank which contains water/alkali mixture to break down sticky overspray resins. The broken down resin may be collected in this tank.
Most water wash booths have a vertical water screen to catch overspray and carry it down into the washing tank. This screen depends for its function on a circulating pump, nozzles, pipe work and filters.
Modern paints, however, are highly resistant to alkali attacks and since the overspray particles may have only a short contact with the alkali. Sticky paint enters the pump, pipe work, filters and nozzles. Clogging occurs, diminishing the booths efficiency and eventually it ceases to operate.
Since there is nothing to become clogged, the resin particles are encouraged to re-circulate so that they scrubbed again and again. Eventually the resin is completely broken down. Pigment sinks to the bottom of the washing tank as non-sticky silt which is relatively easy dispose off.