types of wastewater treatment process: etp/stp and cetp in iran
The techniques used in the conventional treatment of metal finishing wastewater involve precipitation of heavy metals, flocculation, settling and discharge. Each step takes place in a separate tank and adjustments of pH as well as the addition of acid, coagulant, lime or caustic, and polymeric flocculant.
Metro Plant Solids Management Facility Plan. The Metropolitan Wastewater Treatment Plant (Metro Plant) is located three miles southeast of downtown Saint Paul. It treats 180 million gallons of wastewater every day for 66 communities and processes 850 wet tons of solids every day for 73 communities.
