South Wastewater Treatment Plant
Baton Rouge, LA
Client: City of Baton Rouge and Parish of East Baton Rouge
Immediate Action Plan (IAP) Combined Projects
Brasfield & Gorrie provided general contracting services for the South Wastewater Treatment Plant Immediate Action Plan (IAP) combined projects. The work consisted of an expansion of and improvements to the existing plant including a new trickling filter pump station with associated piping, structures, electrical building, and controls; new process equipment including sludge collection equipment, pumps, and snail shell screens; and the rehabilitation of existing gravity thickeners. The IAP project was divided into the following three areas of improvements:
*Primary Treatment Improvements: This phase included a polymer and ferric chloride chemical system with foundation, equipment, and piping. In addition three pump stations and associated settling basins were rehabilitated by replacing equipment and the associated electrical infrastructure.
*Tricking Filter Improvements: This phase included construction of a Trickling Filter Pump Station that is divided into a filtered side and an effluent side. Also included was a network of welded steel pipe, ranging in size from 48 inches to 72 inches in diameter that is used to feed various areas of the plant with recirculating and effluent water.
*Sludge Handling Improvements: This area of work included the rehabilitation and equipment upgrade of four sludge thickeners. The work involved removing existing sludge, demolition of existing gravity thickener mechanisms, new concrete coatings, installation of new gravity thickener mechanisms, and installation of 24-inch diameter PVC pipe.
Wet Weather Improvements–Phase I
The work included modifications to the existing Gravity Influent Pump Station to increase the peak capacity of the pump station to 67 million gallons per day (MGD). A new force main raw wastewater and equalization pump station was also constructed. Included was the construction of a new Preliminary Treatment facility and extensive odor control additions, including both bio-trickling filter towers and activated carbon systems. Four new equalization tanks were constructed, including three at 20 MG and one at 6 MG.
Wet Weather Improvements–Phase II
The work consisted of upgrades and expansion of the existing wastewater treatment plant from a peak flow of 120 MGD to a peak flow of 205 MGD, including 5 MGD of non-potable water for plant use and 200 MGD of effluent for disposal. The improvements included solids contact basins, blower/electrical building, final settling tanks (FST), return secondary sludge/waste secondary sludge (RSS/WSS) pumping, scum pumping and handling, FST chemical systems, chlorine contact basins, sodium hypochlorite addition system, effluent pump station, pipeline and outfall, non-potable water pumping and distribution system, gravity belt thickener modifications, thickened primary sludge pumping, thickened sludge mixing tanks, anaerobic digester modifications, dewatering building modifications, odor control, administration building, laboratory building, standby generators, demolition, yard piping, site improvements, electrical, instrumentation and control systems.