This page and the accompanying spreadsheet and report (at the end of the webpage) helps compare the treatment costs of duckweed treatment lagoons with other complimentary treatment technologies to help farmers find the most cost and land efficient approach to treating their effluent.
The linked pages are summaries of findings from different topics, but a more complete picture is seen in the report and spreadsheet at the end of the webpage.
Modeling the costs of a duckweed lagoon for a medium-scale pig farm in Flanders showed that duckweed treatment lagoons were cost effective, especially once farmers meet the limit for manure they could apply as fertilizer.
A review of the costs and challenges of using duckweed based treatment ponds to treat effluent from recirculating or flowthrough fish farms.
This summary from the agronomic model describes the treatment efficacy of duckweed lagoons, and the cost per kilo of producing it.
Brief description of the value of Lemna on the European animal feed market based on protein digestibility, mineral content, and sustainable production benefits.
A brief overview of the economic analyses of Lemna as a vegetable crop. What are the main factors determining production, processing, and final delivered costs. The model and report will give the complete picture.
The downloadable workbook below allows you to enter or estimate a wastewater stream's concentration of each solute, and will then determine the required hectares of duckweed treatment lagoons and recommend complimentary technologies like coagulant settling, biogas digesters, and various filters to meet discharge limits. This allows you to incorporate different technologies to increase land efficiency, estimate the value of your duckweed crop, and compare the treatment cost to current technologies. All the prices were determined for Flanders based on published papers and local price quotes, so there's options to enter custom values to match your local environment.