Example: tourism industry
Of Surface Waters And Sedimentation In
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2 Municipal Wastewater, Sewage Sludge, and Agriculture
www3.epa.govmove pollutants from wastewater. The processes of primary sedimentation and secondary bio-logical treatment, which were developed in the early part of this century, required much smaller areas for their operations and were capable of producing clarified effluents for direct discharge into a surface water body.
Sulfate in Drinking-water - WHO
www.who.intsulfate (alum) is used as a sedimentation agent in the treatment of drinking-water. Copper sulfate has been used for the control of algae in raw and public water supplies (McGuire et al., 1984). 1.4 Environmental fate Sulfates are discharged into water from mines and smelters and from kraft pulp and paper mills, textile mills and tanneries.