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Wastewater Treatment

Watford City WRRF

Watford City Water Resource Recovery Facility

Like many communities in Western North Dakota, Watford City is experiencing rapid growth. As a result of a phased Wastewater Collection and Treatment Facility Plan and Capital Improvements Plan completed by AE2S in 2010 to address the challenges, the City embarked upon phased improvements to its wastewater treatment facilities

Otsego Biosolids Building

Otsego Biosolids Building

AE2S worked with the City of Otsego to complete a Wastewater Master Plan in 2018 that charted the wastewater utility’s direction for the next 80 years. The first major project from the Master Plan is a Biosolids Building, which will dewater thickened waste activated sludge (TWAS) from both the City’s East WWTF and West WWTF

Sioux Falls Final Clarifier Improvements

Sioux Falls Final Clarifier Improvements

AE2S designed the rehabilitation and process modifications for four 100-foot final clarifiers at the Sioux Falls Water Reclamation Facility. The existing WRF includes trickling filters followed by activated sludge, but the improvements phasing included nutrient removal within the planning period that decommissioned the trickling filters and upgraded the activated sludge to full biological nutrient removal (BNR)

Sturgis Water Resource Recovery Facility

Sturgis Water Resource Recovery Facility

The existing City of Sturgis wastewater treatment facility consists of an influent Parshall flume, mechanical 6mm fine screen, an effluent flow meter, an aeration pond, two secondary treatment ponds and one irrigation storage pond. Emergency discharges directly to nearby Bear Butte Creek have become a common occurrence in recent years because irrigation properties have not been able to handle the volume of treated wastewater produced by the facility

Williston Water Resource Recovery Facility

Williston Water Resource Recovery Facility

The City of Williston’s rapid population growth necessitated a new water resource recovery facility (WRRF). The City retained AE2S to develop a Preliminary Engineering Report (PER) for the new WRRF, along with preliminary design documents of the selected alternative.
AE2S identified future treatment requirements based on capacity needs and treatment discharge levels. Capacity needs were based on population growth patterns