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
Minimum error rate training with a large number of features for machine learning
Squirrel-cage rotor for asynchronous motors
Intermediate adapter for a camera
Modular electric load system II
Projector having a movable tilted aperture and cut filter
Long-term heat-treated integrated circuit arrangements and methods for producing the same
Packaging apparatus including rotary jaw device and method of making packages
  Randomly Featured Patents
Magnetic tape tension control device
Method for compiling a software program and executing on a system which converts data between different endian formats
Lung tissue extract useful for treating hyaline-membrane disease and method for producing the extract
Method for selecting transport format combination guaranteed QoS in mobile communication system
Therapeutic polymeric nanoparticles with mTOR inhibitors and methods of making and using same
Wire containment cap
Spatial filter for near field modification in a wireless communication device
Method for heat transfer sheet recording
Swash plate engine with fixed torque reaction member
Magnetic recording medium and a method for producing the same wherein the medium has two magnetic layers differing in degree of orientation