EXTENDED AERATION
The Extended Aeration Process, a modification of the Activated Sludge Process, effectively treats the contaminants in wastewaters. The standard basis of design includes an aeration system, providing a 18-24-hour detention time and a final settling tank.
- Land Development / housing / labor camps / subdivisions
- Small and medium sized communities and cities
- Mobile Home Parks
- Remote mining, logging, and construction sites
- Recreational areas such as parks, campgrounds, marinas
- Manufacturing facilities, power plants, military bases
- Schools and other educational campuses
- Government compounds
- Biological waste water treatment for industrial wastewater flows
How the process works
The influent wastewater enters the wastewater treatment package plant by passing through a comminutor and/or bar screen for gross solids removal. This step provides for the mechanical reduction of solids prior to aeration.
Once the wastewater has entered the aeration chamber, the untreated flow is mixed with an active biomass in a rolling action that takes place the length and width of the chamber in a slow forward progression. This rolling mixing action is the result of air originating from air diffusers located along one side of the bottom of the tank. This insures that adequate mixing is maintained in the tank. The chambers are filleted on each side along the bottom to assure and enhance the rolling motion of the water and to eliminate any “dead zones” in the tank. The oxygen transfer achieved with the diffused air passing through the wastewater coupled with the rolling action provides a sufficient oxygen supply allowing microorganisms to oxidize treatable wastes in to carbon dioxide, water, and stable sludge.
Features and Benefits Economy
- Low initial cost & low operating costs
- Maximum treatment efficiencies
- Variable blower operation for seasonal load adjustments
- Full concrete pad not required, small pads are suitable, except when the tank is buried in high water table area Proven Reliability
Fulfillment of Regulatory Requirements
- Options are available to meet any possible standard
Ease of Installation
- Minimum field assembly
Simplicity of Operation
- Easy access to all parts of the plant for cleaning and adjustments
MODULAR SYSTEMS
Pre-engineered modular components such as diffused air blowers, flow equalization tanks, aeration tanks, sludge holding tanks, wastewater clarifiers, and disinfection units allow for the package plants to be sized specifically for the customer’s application. They can be designed to handle a variety of influent flow rates and BOD loadings to meet discharge requirements.
