AWWA SOURCES55699

The City of Monroe, North Carolina understands the need to identify and fully utilize water resources. Water reclamation and reuse is part of the City's total water management plan. This paper describes a Recleaimed Water Feasibility Study that the City undertook to look at the feasibility of reusing up to 4 million gallons per day (mgd) of reclaimed water. The project was divided into two components. The first component looked at providing reclaimed water to several existing water customers including: industries for process water; golf course irrigation; and, other dedicated irrigation customers. The project included marketing of this resource to less traditional reclaimed water customers, such as industrial users, and engineering analysis of the treatment and distribution systems. The second component of this project looked at using reclaimed water to indirectly recharge one of the City's three surface water impoundments. This involved pumping reclaimed water through a constructed wetland and allowing it to join natural runoff flowing into a creek feeding the impoundment. This paper will focuses on the more non-traditional aspects of this reclaimed water program, including industrial use and wetland augmentation. The City considered two concepts that made use of reclaimed water. The first involved implementing an urban reclaimed water system that supplied reclaimed water to customers through a distribution system. The City provides potable water to a variety of large, medium, and small industries as well as to commercial and residential customers. Many of the larger industries are located within one mile of the Monroe WWTP. There is the potential to provide a relatively large volume of reclaimed water to industries for process water. CDM performed a demand analysis and a customer survey to identify potential customers, determine the potential reclaimed water demand, and identify potential reclaimed water customer concerns. CDM also evaluated the existing Monroe wastewater treatment plant (WWTP) to determine the expected water quality of the reclaimed water, determine if any treatment upgrades were required, and determine the size of the reclaimed water system that would be supplied by the Monroe WWTP. Regulatory requirements for the treatment and distribution system were addressed. The second reclaimed water concept involved implementing a constructed wetlands that would discharge overland into Richardson Creek upstream of Lake Lee. The wetlands would be fed by reclaimed water and would provide additional treatment before being discharged. The water would therefore be returned to the waterways upstream of the City's raw reservoir system rather than downstream of it. Wetlands modeling was done to determine the expected water quality targets for the wetlands and the required size of the wetlands. Regulatory issues were also addressed. Includes tables, figures.

Product Details

Edition:

Vol. - No.

Published:

01/01/2002

Number of Pages:

10

File Size:

1 file , 1.2 MB