Waste Disposal

Some compounds used in barrel finishing are harmful and their disposal may pose problems. In all instances, local regulations should be checked before establishing any procedure for waste disposal.

Most compounds are alkaline when mixed with water, although some are acid. Compounds containing cyanides or chromates are toxic and are not recommended.

Methods of waste treatment include:

• Neutralizing acid or alkaline waste before disposal

• Removing oils by running the solution under a skimming bar

• Settling out solid wastes in a basin, preferably after neutralization

Shot Peening

Revised by Ted Kostilnik, Wheelabrator Corporation

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