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High-Rate Solids Contact Clarification – A Highly Versatile, Solids Separation Process for Drinking Water And Industrial Wastewater Applications

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This paper presents information, data and conclusions based on two pilot studies investigating high-rate clarification on an industrial wastewater application and a drinking water application. Pilot Study 1 tested a secondary effluent wastewater source from an industrial paper mill for the treatment of phosphorus to less than 0.10 mg/L effluent. Pilot Study 2 was completed on a groundwater source with relatively high hardness (320 – 330 mg/L as CaCO3) under a caustic softening treatment process. Both pilot studies demonstrated the effectiveness of the high-rate clarification process for treatment of varying and challenging water quality conditions for common treatment applications in both water and wastewater areas.

Keywords: Caustic Softening; Clarification; High-Rate Clarification; Phosphorus; Solids Separation; Thickening

Document Type: Research Article


Publication date: 2010-01-01

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