Document Detail


Evaluation of different substrates to support the growth of Typha latifolia in constructed wetlands treating tannery wastewater over long-term operation.
MedLine Citation:
PMID:  18334290     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to investigate the performance of horizontal subsurface flow constructed wetlands planted with Typha latifolia treating tannery wastewater under long-term operation. Two expanded clay aggregates (Filtralite MR3-8-FMR and Filtralite NR3-8-FNR) and a fine gravel-FG were used as substrate for the constructed wetland units plus one unit with FMR was left as an unvegetated control. The systems were subject to three hydraulic loadings, 18, 8 and 6cmd(-1), and to periods of interruption in the feed. The relationship between the substrate, plant development and removal efficiency, especially of organic matter, was investigated. Organic loadings up to 1800kg BOD(5)ha(-1)d(-1) and 3849kg COD ha(-1)d(-1) were applied leading to mass removals of up to 652kg BOD(5)ha(-1)d(-1) and 1869kg COD ha(-1)d(-1), respectively. The three different substrates were adequate for the establishment of T. latifolia, although the clay aggregates allowed for higher plant propagation levels. The units with FNR and FMR achieved significantly higher COD and BOD5 removal when compared to the FG and to the unplanted units. The systems proved to be tolerant to high organic loadings and to interruptions in feed suggesting this technology as a viable option for the biological treatment of tannery wastewater.
Authors:
Cristina S C Calheiros; António O S S Rangel; Paula M L Castro
Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-03-10
Journal Detail:
Title:  Bioresource technology     Volume:  99     ISSN:  0960-8524     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-06-03     Completed Date:  2008-09-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  6866-77     Citation Subset:  IM    
Affiliation:
Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal. mccalheiros@mail.esb.ucp.pt
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MeSH Terms
Descriptor/Qualifier:
Adsorption
Industrial Waste*
Tanning*
Typhaceae / growth & development*
Water Pollutants*
Chemical
Reg. No./Substance:
0/Industrial Waste; 0/Water Pollutants

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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