Gramercy

Gramercy Wastewater Treatment Facility
Town of Gramercy

Gramercy Treatment Facility Project Title:

Gramercy Wastewater Treatment Facility

Owner:

    Town of Gramercy
   P.O. Box 235
   Gramercy, La 70052

Contact:
   Jim Zeringue
   Town of Gramercy
   Office: (225) 869-4403
   Fax: (225) 869-4195

Engineer of Record:

Environmental Engineering Services, Inc. - LaPlace, La.

Lead Design Engineer - Oscar Boudreaux, P.E.

Project Description

This project, completed in October 2002, consisted of an aerated lagoon constructed within the boundaries of an existing faculative lagoon. The 840,000 gallon aerated lagoon consists of one complete mix cell, two settling and partially aerated cells, and one final settling cell. The complete mix cell has eight (8) 7.5hp surface aerators while the second intermediate cell has two (2) 7.5hp surface aerators. The third cell consists of two (2) 5hp surface aerators. The headworks are three 1.0 MGD static Andritz fine screens. An effluent box was installed to allow the operator to vary the ten (10) foot water depth as needed. The existing effluent pump station and chlorination system completed the process system.
The existing faculative lagoon was abandoned in place.

Project Data

Contractor	Notingham Construction Co. Baton Rouge, La (225) 775-7613
Completion Date	October 25, 2002
Construction Costs	$600,296
Costs/Gallon	$0.80

Technical Data

Type of Treatment	Aerated Lagoon
Flow (Average)	0.75 MGD
(Peak)	1.70 MGD
Wastewater Temperature	20 C (Summer) 10 C (Winter)
Influent BOD	220 mg/l
Influent TSS	220 mg/l
Effluent BOD	30 mg/l
Effluent TSS	30 mg/l
Effluent pH	6-9
Effluent Fecal Coliform	200-400
Hydraulic Retention Time	7.4 days @ average daily flow

Basin Dimensions

Water Surface Dimensions	798 ft x 138 ft.
Bottom Dimensions	750 ft x 90 ft.
Water Depth	8-10 ft.
Freeboard	3 ft.
Side Slope	3:1
Volume	840,000 gallons
Material	Clay (earthen)
Elevation (Water Surface)	5 MSL

Map to Project Site

Site Photos