Vegetative Filters for Dairy Waste
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A vegetative filter is a grassy area that receives rainfall runoff from an open livestock feedlot. The vegetative filter separates nutrients from the lot runoff and provides an infiltration area for the runoff water so that no discharge occurs. In order for the vegetative filter to work properly, it is necessary to separate solids from the runoff ahead of the vegetative filter and divert roof water and clean water runoff from above the feedlot and the vegetative filter area. Solids are separated in a concrete settling basin, or in an earthen impoundment basin or a terrace. A uniformly sloping vegetative filter area with less than 10 percent slope is desirable.
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