Alden has a long history of providing modeling services to municipalities, technology manufacturers, and private companies.
Studies of treatment facilities are conducted to:
- Define flow patterns in treatment tanks, mixing chambers, and pumping systems for treatment facilities
- Identify problems such as short-circuiting, resident time, and extent of mixing (using conservative tracers, Rhodamine WT, and calibrated fluorometers
- Develop and verify remedial devices to achieve the desired operating characteristics
- Control flow patterns in settling and treatment chambers with design changes to achieve a uniform “plug” flow in a minimal distance
- Minimize pre-rotation and vortices at pump intakes using various types of control devices
Studies of combined sewer outfall (CSO) structures are conducted to:
- Minimize floatables and suspended solids entering the receiving body
- Design the structure with a minimal footprint to fit on the available real estate (a combination of physical modeling and CFD often offers the most cost-effective method for designing such structures)
Studies of NPDES II stormwater management technologies are conducted to:
- Meet State testing protocol requirements for laboratory evaluation of stormwater separators
- Assist stormwater technology manufacturers in optimizing their designs
