1st Edition

Effect of Operational Variables on Nitrogen Transformations in Duckweed Stabilization Ponds

ISBN 9780415375542
Published March 15, 2005 by CRC Press
176 Pages

USD $105.00

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Book Description

There is an urgent need to develop and improve low cost technologies for wastewater treatment. Simultaneously treating wastewater and producing duckweed in a pond system is, therefore, an attractive solution contributing to both environmental protection and food production. Duckweed has excellent qualities: a high protein content, a high growth rate and is an easy crop to  handle. The small plant turns nitrogen from wastewater into a food source.  This thesis reports on the effect of different operational variables, like anaerobic pre-treatment, the combination of algae and duckweed ponds and pond depth. Improved nitrogen removal was obtained through the combination of duckweed ponds with algae ponds. Duckweed pond systems could be designed with shallow depth without affecting nitrogen removal efficiency. This research is the result of the cooperative effort between the EIDENAR, Univalle, Cali, Colombia and the UNESCO-IHE Institute for Water Education in Delft, the Netherlands.



Julia Rosa Caicedo is a PhD student associated with the IHE Delft, the Netherlands.