City of Estherville, Iowa
- 1,200 gpm gravity filter expansion / addition
- Bacteriological removal of ammonia
- Transfer pumps to above grade ground storage reservoir
- High service pumps to distribution
- Coordination of expansion while maintaining water treatment operation
- Managing gravity flow and adequate service to zeolite softening system
- Coordinate design to maintain system hydraulics
Water Treatment Plant Expansion
The City of Estherville operates an iron and manganese removal and zeolite softening facility. The plant had adequate softening capacity for growth, but had exceeded the rapid sand filtration capacity of the facility. The expansion was rated at 1,200 gpm and included the following work:
Construction of a water treatment plant expansion of 1200 gpm capacity, including concrete gravity filter cells, masonry building, yard and process piping, line shaft turbine high service and backwash pumps, horizontal split case transfer pumps, HVAC, electrical and control, site work and miscellaneous appurtenant work.
- Electrical Power
Wastewater Treatment Facility
MBBR technology was chosen based on cost, operational flexibility and most importantly, limited land availability.
DGR employed a Geographic Information System (GIS) in conjunction with the U.S. Army Corps of Engineers to first determine the 100-year flood elevations and delineate the floodway boundaries.
Due to concerns with the age and condition of the structures, along with safety clearances to energized equipment and conductors, a project was undertaken to replace the old infrastructure with new underground lines and associated padmount equipment.
Redwood Falls, MN
Street & Utility Improvements
Morningside Avenue was reconstructed totaling approximately 1,300 linear feet. The project included new sanitary sewer, water main, storm sewer, fiber conduits, decorative street lighting, and 9-inch concrete paving with colored concrete sidewalks.
Sioux City, IA
Wastewater Treatment Facility (SBR)
The City ultimately determined a flow-through style SBR system to be the preferred choice based on the selection criteria and the ability to meet anticipated permit limits.
Orange City, IA
Planning started with site plan design for the new facility to offer maximum exposure to traffic on Highway 75.
Rock Rapids, IA