University of Worcester Worcester Research and Publications

The Design and Performance of a Vertical Flow Reed Bed for the Treatment of High Ammonia, Low Suspended Solids Organic Effluents

Herbert, Rob and Morris, Mike (1997) The Design and Performance of a Vertical Flow Reed Bed for the Treatment of High Ammonia, Low Suspended Solids Organic Effluents. Water Science and Technology, 35 (5). pp. 197-204. ISSN 0273-1223

Full text not available from this repository. (Request a copy)


A design approach for vertical flow constructed wetlands based on selection of not only bed size, but also substrate characteristics, configuration, plant species/variety and management is piloted in a trial system to treat sugar beet processing wastes. In the beet processing season these wastes are hot, low in suspended solids and relatively high in ammoniacal nitrogen.

The pilot system consists of a small, coarse substrate first stage followed by a larger, fine substrate second stage. Results in the beet processing season show 87.3% COD removal, 87.7% TSS removal and a 79.5% reduction in ammoniacal nitrogen. Treating larger volumes of cooler stored wastes out of season, the mean removal efficiencies were 73.9% for COD, 88.0% for TSS and 93.4% for ammoniacal nitrogen.

TSS removal m-2 was found to be independent of influent concentration and temperature, whilst COD removal m-2 was found to be independent of temperature, but not influent concentration. Removal of ammoniacal nitrogen appeared to be dependent upon influent concentration and, in particular, upon temperature. Infiltration rates were shown to be negatively correlated to length of dosing cycle. Simple models of substrate permeability based on substrate particle size distribution are seen to be inadequate for describing infiltration rates in vertical downflow systems, even those treating low strength wastes.

Item Type: Article
Additional Information:

The electronic full-text cannot be supplied for this item. Please check availability with your local library or Interlibrary Requests Service.

Uncontrolled Discrete Keywords: ammoniacal nitrogen, chemical oxygen demand, dosing regime, infiltration rate, suspended solids, vertical flow, SERG
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Q Science > QK Botany
T Technology > TD Environmental technology. Sanitary engineering
Divisions: College of Health, Life and Environmental Sciences > School of Science and the Environment
Depositing User: Rob Herbert
Date Deposited: 27 Nov 2009 14:30
Last Modified: 31 Jul 2020 14:18

Actions (login required)

View Item View Item
Worcester Research and Publications is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.