The U.S. Department of Labor (DOL) is renewing its efforts to enforce labor laws across the country. Employers should be aware of the fact and be ready for the government audits.
Most wastewater treatment processes produce a sludge which has to be disposed of. Conventional secondary sewage treatment plants typically generate a primary sludge in the primary sedimentation stage of treatment and a secondary, biological, sludge in final sedimentation after the biological process. The characteristics of the secondary sludge vary with the type of biological process and, often, it is mixed with primary sludge before treatment and disposal. Approximately one half of the costs ofPage 1 of 11
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