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
Method for manufacturing light emitting diodes
Method and apparatus to adjust received signal
System and method for operating an electric power converter
Pear-shaped convertible reading glasses
Fluorine-free fused ring heteroaromatic photoacid generators and resist compositions containing the same
Washing machine
System and method of supplying an electrical system with direct current
  Randomly Featured Patents
Compounds useful for inhibition of farnesyl protein transferase
Dual fishing pole holder
Non-thermal energy treatment for the reduction of microbial population in liquid food products
LCD panel and method for fabricating the same
Fender skirt and methods for using same
Methods and compositions for screening cloned proteins
Flexible card with display function
Amplifying apparatus
Optical techniques of measuring endpoint during the processing of material layers in an optically hostile environment
System and methods for navigating and visualizing multi-dimensional biological data