Wastewater

We know you are confronted with changing government regulations and aging infrastructure, which can pose challenges to providing effective collection and safe treatment of your customer’s wastewater. DGR Engineering is here to help you maintain your system and design cost-effective improvements to meet your changing needs. Whether it is rehabilitation of your collection system to reduce infiltration and inflow or the design of a new wastewater facility improvement, we are here to assist you every step of the way.

  • wastewater collection, pumping and treatment design
  • sewer rehabilitation
  • coating maintenance for wastewater facilities
  • comprehensive planning, rate studies and funding assistance

Wastewater Contact:

Daniel Nebelsick, PE
Department Head
Rock Rapids

Wastewater Projects

All
  • All
  • Collection
  • Lift Stations
  • Sanitary Sewer Rehabilitation
  • Treatment Facilities

Wastewater Treatment Facilities

Designed a SAGR system to be utilized as a polishing step following the City’s aerated lagoon system. The system includes a synthetic liner, aeration lines, rock media, an insulating mulch layer, control structures, and related piping.

Wastewater Treatment Facilities
Hull, IA

Coal Ash Landfill Cell

The project included the construction of a 7-Acre synthetic lined cell to store a fly ash by-product from the energy generation process.

Coal Ash Landfill Cell
Sioux City, IA

Sanitary Sewer Rehabilitation

DGR Engineering has experience in sanitary sewer rehabilitation including: CIPP sewer main lining, service line grouting or lining (top hat), structure rehabilitation, and other related techniques.

Sanitary Sewer Rehabilitation
Ellsworth, Balaton & Hendricks, MN

Digester Improvements Project

Analyzed digester cover and mixing system alternatives due to condition of existing plant equipment. Selected cover and mixing system to best fit the City’s request for potential future digester gas re-use to reduce plant operational expenses.

Digester Improvements Project
Estherville, IA

Wastewater Treatment Facility

Upgraded sludge handling equipment, including belt filter press and sludge storage area.  Increased capacity of existing lift station.

Wastewater Treatment Facility
Sanborn, IA

Sequencing Batch Reactor (SBR)

Designed a lift station with chopper pumps to reduce clogging and maintenance potential. Designed and constructed an SBR plant for high strength waste streams from restaurants and bars within the casino complex.

Sequencing Batch Reactor (SBR)
Larchwood, IA

Pond Closure

Assisted the City of Luverne in abandoning the industrial wastewater treatment facility formerly owned by Iowa Beef Producers.

Pond Closure
Luverne, MN

Wastewater Treatment Facility

Designed new 2 cell lagoon facility with effluent discharged to old bi-level cell which functions as a constructed wetland.

Wastewater Treatment Facility
Jefferson, SD

Low Pressure Collection System

Analyzed collection and treatment alternatives. Designed a septic tank effluent pump (STEP) system for Superior’s residents. 

Low Pressure Collection System
Superior, IA