Connell, Washington
Integrated Natural Systems for Treating Potato Processing
Wastewater.
 This was a 5-year project that
entailed operation and monitoring of a pilot treatment system,
evaluation of data and design of a full-scale treatment
facility, permitting, construction of the facility, and then
start up and required monitoring and analysis. All phases of
work were closely followed by Department of Ecology since it
involved development of an innovative technology to pre-treat
food potato processing wastewater prior to land application.
The final system designed to remove about 65% of the total
nitrogen in 1.7 million gallons per day of wastewater,
consisted of about 65 acres of wetlands, sand filters, and a
storage lagoon. This was a multidisciplinary team project
involving engineers, scientists, landscape architects, DOE,
and management from the industry. WQE provided expertise in
all sample collection, analysis, design, assistance in
construction management, and managed all trouble shooting,
analysis, during the start up of the full scale treatment
facility.
Client: Lamb Weston Inc., Connell, WA
Project Team: The Kirkbride Group, WQE, AKI Landscape
Architects, Wetland Management Services, Cascade Earth
Sciences. LTD. |
Manson, Washington
Removal of phosphorus from agricultural drainage water in
Stink Creek
 This
project evaluated the use of a novel wetland treatment
technology to reduce phosphorus from water flowing in Stink
Creek. Influenced by surrrounding agriculture and seasonal
turnover from Dry Lake, phosphorus range from 0.050 mg/L to
0.500 mg/L within a season. Three filters were planted with
native vegetation from Wapato Lake and monitored for 2 years.
Second year performance of the filters showed an average
removal of 97% of soluble reactive phosphorus and 85% average
reduction of total phosphorus. This evaluation clearly
demonstrated that sections of Dry and Roses Lakes could be
ecologically engineered to reduce phoshphorus and possibly DDT
loads moving from these lakes in Lake Chelan.
Client: Lake Chelan Reclamation District, Paul Cross, PE
Project Team: Water Quality Engineering and DB Environmental
(Melbourne, Florida) |
