Patent ID: 6318395
Filing Date: 2001-11-20
Classification: E03F,Y02A,Y10T

Abstract:
An apparatus for flow control in combination with a sewer system to reduce wastewater treatment electrical costs comprising:a sewer segment having an upstream section and a downstream section, the sewer segment also containing a liquid portion and a gaseous portion,a wastewater being conveyed within the sewer system passing through the sewer segment from the upstream section to the downstream section,a wastewater treatment plant being subject to an electrical rate structure, the wastewater treatment plant receiving a wastewater flow through the sewer system, the electrical rate structure having at least a high power cost period and a low power cost period,a control means located between the upstream section and the downstream section of the sewer segment, the control means periodically reducing the wastewater flow reaching the wastewater treatment plant during the high power cost period, the wastewater being temporarily stored in the gaseous portion of the upstream section, the control means periodically increasing the wastewater flow reaching the wastewater treatment plant during the low power cost period.