Reduction of Nitrogen and COD by Land Disposal of Dairy Wastewaterby Fred J. Doran, Foth & Van Dyke &, Associates, Green Bay, WI, USA,
David K. Sauer, Foth & Van Dyke &, Associates, Green Bay, WI, USA,
William C. Boyle, Foth & Van Dyke &, Associates, Green Bay, WI, USA,
Abstract: Land disposal of industrial wastewater, and in particular the ridge and furrow (R&F) process, has been a popular and simple treatment method for many years. This study, conducted at two R&F disposal facilities treating cheese processing wastewater, discovered 96 to 99% reduction of applied wastewater COD and 51 to 92% reduction of applied wastewater nitrogen. It was concluded that COD and nitrogen removal is dependent on site geology, wastewater COD and nitrogen loading, the load/rest cycle, and wastewater distribution efficiency. System treatment can be improved by adjusting any of these four factors.
Subject Headings: Industrial wastes | Wastewater treatment | Oxygen demand | Nitrogen | Soil treatment | Load distribution | Load factors
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