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Abstract
The paper presents the influence of sewage composition on treatment in pilot-scale facility for reject waters (RW) from sewage sludge centrifugation. The facility consisted of mechanical (two tanks with 10 d retention each) and biological parts composed of three subsurface flow reed beds working in batch. Two years of monitoring of the facility proved high efficiency removal of predominant pollutants: COD 75–80%, BOD 82.2–95.5% and TN 78.7–93.9% for low ratio of BOD5/COD in discharged RW. The differences in efficiency removal were correlated with the composition of organics and nitrogen compounds rather than with concentrations. It was assumed that high concentration of colloidal fraction of Org-N and COD in discharged RW led to decrease in efficiency removal.
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
WATER SCIENCE AND TECHNOLOGY
no. 68,
pages 1223 - 1232,
ISSN: 0273-1223 - Language:
- English
- Publication year:
- 2013
- Bibliographic description:
- Gajewska M., Obarska-Pempkowiak H.: Multistage treatment wetland for treatment of reject waters from digested sludge dewatering// WATER SCIENCE AND TECHNOLOGY. -Vol. 68 , nr. 6 (2013), s.1223-1232
- DOI:
- Digital Object Identifier (open in new tab) 10.2166/wst.2013.306
- Verified by:
- Gdańsk University of Technology
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