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
Off-line converter with digital control
Method and apparatus for reacquiring lines in a cache
Memristive junction with intrinsic rectifier
System and method for predicting remaining useful life of device components
Apparatus and method for adapted deblocking filtering strength
Oxide material, electrophotographic photoreceptor, process cartridge, and image forming device
  Randomly Featured Patents
Combination vanity and lavatory
Snowthrower having impeller assist propulsion
Orthopedic back support for an automobile
Gas flow regulator for gases with condensable components
Electrostatic air cleaner
Amide-substituted derivatives of spiroindanylcamphorsulfonyl oxytocin antagonists
Multi-use lead-acid power pack for use with a cordless power hand tool and other loads
Ring opening metathesis polymerization of strained cyclic ethers
Entrance structure for a multi-passenger vehicle
High-speed counter