NDLI: Removal of micropollutants with coarse-ground activated carbon for enhanced separation with hydrocyclone classifiers.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Otto, N. Platz, S. Fink, T. Wutscherk, M. Menzel, U.
Description	Author Affiliation: Otto N ( Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail: nikolai.otto@iswa.uni-stuttgart.de.); Platz S ( Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail: nikolai.otto@iswa.uni-stuttgart.de.); Fink T ( Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail: nikolai.otto@iswa.uni-stuttgart.de.); Wutscherk M ( Ökoservice GmbH, Abwasser- und Umwelttechnik, Köngener Straße 14, 73770 Denkendorf, Germany.); Menzel U ( Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail: nikolai.otto@iswa.uni-stuttgart.de.)
Abstract	One key technology to eliminate organic micropollutants (OMP) from wastewater effluent is adsorption using powdered activated carbon (PAC). To avoid a discharge of highly loaded PAC particles into natural water bodies a separation stage has to be implemented. Commonly large settling tanks and flocculation filters with the application of coagulants and flocculation aids are used. In this study, a multi-hydrocyclone classifier with a downstream cloth filter has been investigated on a pilot plant as a space-saving alternative with no need for a dosing of chemical additives. To improve the separation, a coarser ground PAC type was compared to a standard PAC type with regard to elimination results of OMP as well as separation performance. With a PAC dosing rate of 20 mg/l an average of 64.7 wt% of the standard PAC and 79.5 wt% of the coarse-ground PAC could be separated in the hydrocyclone classifier. A total average separation efficiency of 93-97 wt% could be reached with a combination of both hydrocyclone classifier and cloth filter. Nonetheless, the OMP elimination of the coarse-ground PAC was not sufficient enough to compete with the standard PAC. Further research and development is necessary to find applicable coarse-grained PAC types with adequate OMP elimination capabilities.
File Format	HTM / HTML
ISSN	02731223
Issue Number	11
Volume Number	73
e-ISSN	19969732
Journal	Water Science & Technology
Language	English
Publisher	IWA Publishing
Publisher Date	2016-01-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Hydrology Charcoal Chemistry Water Pollutants, Chemical Isolation & Purification Water Purification Methods Adsorption Particle Size Waste Water Analysis Evaluation Studies Journal Article
Content Type	Text
Resource Type	Article
Subject	Environmental Engineering Water Science and Technology

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