Systems For The Sustainable Management Of
Agricultural Wastewaters
Author(s)
S. Barrington, I. Ali, S. Morin & J. Whalen
Abstract
Agricultural enterprises produce wastewaters in large quantities and from
multiple sources. These wastewaters offer relatively low levels of nutrients and
conventional land spreading equipment cannot apply these at a sustainable rate
of 1000m3/ha. Two new application technologies were developed to better use
the nutrients of these wastewaters in a sustainable fashion, while also using the
water applied to the crop and reducing the application costs: a modified surfaced
irrigation method and a modified seepage field associated with an organic matter
trap and septic tank. The project tested the performance of both systems to
obtain the best management practices. The modified surface irrigation system
performed with minimal environmental impact when using a plot larger than that
required for infiltration and applying the wastewater on dry soils using
recommended irrigation rates. The adapted surface irrigation technique reduced
the land spreading costs from $3.50 to $1.00 Can m-3. The modified seepage
field coupled with a septic tank worked well for the disposal of milk house
wastewaters when managing the sediments and milk fat. The modified seepage
field had limited impact on groundwater quality, but provided crop nutrients and
reduced the investment cost of a treatment system for milk house wastewaters
$15 000 to $6 000 Ca., for a 60 cows dairy herd.
Keywords: agricultural wastewater, sustainable and economical treatment.
1 Introduction
Agricultural enterprises produce large volumes of wastewaters which are
generally costly to handle because of their low nutrient content [1]. These
wastewaters consist mainly of manure seepage produced from the decomposition
Keywords
agricultural wastewater, sustainable and economical treatment.
Related Book
Other papers in this volume
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