CDM designed a high-rate clarification (HRC) unit to expand treatment capacity at the Munster wastewater treatment plant, and prepared a consolidation program for wastewater treatment within St. Bernard Parish. The consolidation program, a low-cost alternative for addressing aging infrastructure and permit compliance issues, precluded investing considerable capital into four aging facilities, and reduced the parish's long-term operating costs and permitted discharges.
The upgraded Munster facility, accommodating 7.5 million gallons per day (mgd) of daily flow and 10 mgd of peak flow, is the central component of the parish's wastewater treatment consolidation program. HRC technology brought the facility into compliance with the existing permit requirements, and can be expanded to more than 15 mgd with minimum capital expenditure. Due to St. Bernard's ongoing sanitary sewer overflow program, peak flow increases are anticipated and expanded peak flow treatment capacity at Munster was essential for the parish's treatment consolidation.
In south Louisiana's difficult soil conditions, the small footprint of HRC technology also provided a substantial savings in construction costs over conventional alternatives.
CLIENT: St. Bernard Parish, Louisiana
LOCATION: St. Bernard Parish, Louisiana