Capacity: 18 MG rectangular CSO tank and pipe gallery
Structure Footprint:415-ft long by 256-ft wide
On-site Project Duration:10 months
Total Precast Concrete Pieces:1,733
As part of Alexandria Renew’s State-of-the-Art Nutrient Upgrade (SANUP) initiative, Dutchland, Inc. is constructing an 18 million gallon precast post-tensioned concrete tank. The tank consists of three levels with a building integrated into the tank. The main levels include a central pipe gallery buried 50-ft deep, twelve wet wells buried 47-ft deep, and the main tank structure buried 37-ft deep, with 12-ft above ground. The tank rests on 1,800 14-inch prestressed concrete piles that are used for both compression and tension and are attached to the base slab with strand. The tank will be covered with a flat precast roof topped with granular fill and a synthetic playing surface to accommodate regulation soccer and lacrosse fields. When complete in 2015, the Nutrient Management Facility will allow Alexandria Renew to process 13 billion gallons of wastewater each year.
Project:3.75 MGD Biological Treatment Facility
Project Completion: March 2013
Construction Duration: 10 months
The city of Lock Haven, PA constructed a $33 million sewage treatment plant upgrade in response to the DEP’s new discharge limits for total nitrogen and total phosphorous. The Biological Treatment Facility, constructed by Dutchland, Inc. using precast post-tensioned concrete, uses four SBRs with common wall construction to treat the 3.75 MGD average daily flow and a 9.0 MGD peak flow. On the opposite side of the Biological Treatment Facility there are four aerobic digesters in the process gallery for sludge stabilization. Additionally, in the Biological Treatment Facility, between the SBRs and aerobic digesters, there is a Process Gallery that houses pumps, blowers, chemical storage and additional equipment, offices, laboratory, restrooms, employee locker room and shower, and lunch room.
Project:4.1 MGD Advanced Nutrient Wastewater Treatment Facility
Type: Oxidation Ditch with two Primary Clarifiers, two Final Clarifiers, a Filter Tank/Building, a Pump Station, & a Leachate Storage Tank.
Project Completion: February 2013
Construction Duration: 8 months
Treating sewage in a way that greatly limits its negative effect on the environment is extremely important. Mindful of this fact, the town of Moorefield, WV constructed a $36 million sewage treatment plant in an effort to eliminate almost 30% of all the waste West Virginia contributes to the Chesapeake Bay. Using an innovative precast post-tensioned concrete tank design, Dutchland, Inc. exceeded the customer’s requirements and realized savings of over $1 million for Moorefield. By maximizing engineering efficiencies, Dutchland, Inc. provided the customer with a state-of–the-art structural design that generated considerable savings in production, construction, and maintenance of the tanks for Moorefield.