Resources Contact Us Home
Remediation method

Image Number 4 for United States Patent #6464005.

A method of remediating a site of earth and groundwater contamination includes the steps of drilling at least one injection well, and preferably a plurality of injection wells, into the groundwater in a contaminated area. At least one, and preferably a plurality of extraction wells, are drilled into the earth above the groundwater, the vadose zone, in the contaminated area. The surface of the earth above the contaminated area is sealed, such as by a layer of concrete, asphalt, or plastic sheeting. Air and nutrients are injected into the contaminated area through the injection wells. The air is injected on a substantially continuous basis while the nutrients are injected on a batch basis. Air and vapor is extracted on a substantially continuous basis from the contaminated area by the extraction wells, which may be either vertically or horizontally positioned.

  Recently Added Patents
Nanocatalysts structure, process for the preparation and use thereof
Scalable security services for multicast in a router having integrated zone-based firewall
Portable computer display structures
Asynchronous loading of scripts in web pages
Semiconductor memory device
Orbing and lighting systems
Method and device for extracting vapors in an injection molding machine
  Randomly Featured Patents
Method for accommodating large movements in a mooring system
Access control apparatus, access control method, and access control program
Methods of removing a torque converter and a starting motor from an auxiliary compartment of a gas turbine
Radon gas ventilation pump system and method
Encryption devices for use in a conditional access system
Method and apparatus for absorbing acoustic energy
Multichip press-contact type semiconductor device
Variable-gain amplifier and related method
Illuminated display
Semiconductor package and stacked layer type semiconductor package