Impact of a Seasonal Water Quality Management Strategy for Wastewater Treatment Facilities

摘要

A mixed integer programming model is used to simulate wastewater treatment costs with seasonal variations in water quality standards for a representative stream basin. Water quality constraints are determined for two seasons (winter and summer) using a stream model. Annual cost savings range from $1,000 to $117,000 depending upon the constraints imposed. If a minimum of secondary wastewater treatment is required at all times the annual cost savings are $14,000. Relaxation of the secondary treatment requirements increases the annual cost savings to $35,000. If phosphorus removal is required during the summer but not during the winter months, the largest cost savings occur.