Municipal Wastewater Treatment
Ketchum/Sun Valley, ID - Shoshone, ID - Payette, ID - Worthington, MN - Fruitland, IDCity of Ketchum/Sun Valley
Water Sewer District, Ketchum, Idaho
Ketchum Waste Water Treatment Plant
UV Channel
Pharmer Engineering has been working with The City of Ketchum / Sun Valley Water Sewer District for over six years. In that time we have completed a number planning and detailed design projects; including facility planning and phosphorus removal efforts. We believe our repeat business with the District reflects our commitment to client service and client satisfaction.
- Wastewater Reuse Planning. Pharmer is currently completing a Class A wastewater reuse permitting which will allow discharge of treated water to the plant grounds and nearby open-space. This demonstration project will be instrumental in the planned expansion of reuse in the future as an alternative to river discharge of treated water.
- Tertiary Filtration Projects. In the fall/winter 2005/2006 we designed a tertiary filtration system that includes cloth media disk filters. The filters were put on-line in February 2007, meeting treatment expectations.
- Aeration Basin. In 2005, we designed two new aeration basins with fine bubble aeration with associated civil and yard piping components. Construction was completed summer 2006.
- UV Disinfection, Electrical and SCADA Design. Chlorination was replaced by a new ultraviolet (UV) system. Other improvements included a new centralized electrical system and a full SCADA system. The project was constructed over two-years, 2003-2004.
- Wastewater Facilities Plan. In 1999 and 2003 Pharmer Engineering staff prepared a comprehensive Wastewater Facility Plan.
- Secondary Clarifier Improvements. Pharmer Engineering designed a new 90 ft. diameter clarifier and a chemical feed system for phosphorus removal.
- Near-Term Sludge Handling Improvements. In this project, we provided improved sludge aeration and load-out facilities so the City could resolve nuisance odor issues.
- Headworks Improvements. This project eliminated odor and noise issues by replacing the influent lift pumps, installing mechanical screening with screenings washer and adding a chemical odor scrubber for the headworks buildings.
Wastewater Facilities Plan
City of Shoshone, Idaho
Pharmer recently completed a Wastewater Facilities Plan and Pre-design for the City of Shoshone. Components of the plan included a flow and load analysis, population projections, regulatory overview, wastewater treatment capacity analysis, capital alternative development to meet planning year needs at the wastewater treatment facility as well as the collection system, and a user rate analysis.
The capital improvement plan includes roughly $2.25 million in treatment plant upgrades and $0.75 million in collection system upgrades. Pharmer Engineering has assisted the City of Shoshone with project funding for the selected alternatives and is currently in the design phase.
Industrial Wastewater Treatment Plant Design
City of Worthington, Minnesota
Brad Bjerke served as Project Manager/Lead Process Engineer for the design of a phosphorus removal and sludge handling project for the City of Worthington, MN industrial wastewater treatment facility. The project objectives were to remove phosphorus, thicken and store sludge and improve system performance. Chemical phosphorus removal was selected as the most cost effective solution. To assure compliance, cloth media filtration was included in the design.
The solids handling facilities include a gravity belt thickener designed to function either as a thickener to minimize storage volume. Waste activated sludge is thickened then stored in two liquid sludge storage tanks, each 126 feet in diameter by 28 feet tall. The liquid sludge is stored until fields become available each fall for land application.
The filter building included office and laboratory areas. The chemical storage and filters were arranged in rooms slightly below grade to keep the overall building height to a minimum. Careful attention was paid to building materials to make the facilities attractive and blend into the surrounding area.
Wastewater Facility Plan Update &
Secondary Clarifier Pre-Design
City of Payette 2006 -2007
Pharmer Engineering updated the City of Payette’s 1999 facility plan to reflect changes in flow and loads and anticipated NPDES permit changes due to TMDL limitations. The plan outlined several improvements including a new secondary clarifier. Pharmer is currently working with Payette on the pre-design and buffer distances for the clarifier.
City of Fruitland
City of Fruitland Wastewater Facility Plan
Two lagoon wastewater treatment systems serve the City of Fruitland, each with a major food processor as a discharger. With the recent expiration of their discharge permits to the Snake and Payette Rivers, The City hired Pharmer to evaluate their wastewater treatment systems for capacity and to determine necessary upgrades to meet expected NPDES discharge requirements.
Water Treatment Plant
Pharmer Engineering has begun work on the design of the improvements identified in the City of Fruitland Water Faciltiy plan, including the design of a 10 cfs intake structure, a 3 mgd water membrane filtration plant (expandable to 6 mgd), a booster pump station, water storage reservoirs and several miles of distribution piping.
The project is expected to bid in the fall of 2008.
City of Fruitland Palisades Water and Sewer Feasibility Study
Economic growth in and around the City of Fruitland has been expanding over the past years. The Palisades junction is approximately 1.75 miles south of the City and is at the major intersection of two State Highways as well as bordering the interstate. Pharmer Engineering is currently examining the feasibility of providing water and sewer services to the Palisades area, which will allow for economic growth to the area. The study is being funded through USDA and the Idaho Department of Labor and Commerce Funding Grants.