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Coagulation/flocculation and ion exchange onto natural zeolite clinoptilolite are reviewed and discussed in this paper based on their pilot or industrial applications. Surface water purification by means of chemical coagulation and flocculation supported by the powdered natural zeolite was carried out industrially to save drinking water reservoir (upper part of Ondava river) settled by about ten thousands inhabitants. Therefore, several other surface water samples from the Slovakian reservoirs potentially impacted by contamination were examined to treat with alum coagulation/flocculation and powdered clinoptilolite tuff addition at the laboratory, respectively. Ammonia removal from tannery wastewater using the clinoptilolite tuff with chemical regeneration and regenerant recovery by air stripping, carried out in pilot measure during the several months at the mixed Wastewater Treatment Facility in Otrokovice - WTFO is discussed and evaluated, respectively.


clinoptilolite tuff ammonia removal ion exchange air stripping coagulation and flocculation

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Author Biography

Eva Chmielewská, Faculty of Natural Sciences, Department of Environmental Ecology, Comenius University Mlynská dolina B2, 842 15 Bratislava, Slovak Republic

Faculty of Natural Sciences, Department of Environmental Ecology, Comenius University
Mlynská dolina B2, 842 15 Bratislava, Slovak Republic,
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