What is it about?
A pilot installation including a preliminar treatment by a UASB reactor and the secondary treatment performed by an aerated constructed wetland has been investigated at a pig breeding farm in North Italy. The performances obtained during the research period, shown in the present paper, have provided the basic information for the plant upscaling.
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Why is it important?
Pig farms produce yearly a large amount of manure, which needs to be properly managed to avoid negative impacts to the environment. Swine manure is commonly spread to land, aiming to recover the high nutrient content for agricultural purposes. However, usually the nutrient loads exceed the fertilization request of the land, promoting a strong contamination of groundwater by nitrates and the risk of eutrophication of surface waters.
Perspectives
The high land footprint required for CW systems is still limiting the CW adoption for swine wastewater treatment, especially in large breeding facilities. Two research frontiers aimed at reducing the footprint and enhancing the CW performances have been recently proposed and studied in literature: intensified CWs and the combination of CWs with other treatment technologies. UASB and Aerated CWs combination seems to be a treatment solution with high market potential.
Dr Fabio Masi
IRIDRA Srl
Read the Original
This page is a summary of: Upflow anaerobic sludge blanket and aerated constructed wetlands for swine wastewater treatment: a pilot study, Water Science & Technology, March 2017, IWA Publishing,
DOI: 10.2166/wst.2017.180.
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