摘要:
A method and apparatus for destroying organic contaminants, such as trichloroethylene, in aqueous liquids, such as groundwater, utilizing steam stripping integrated with biodegradation. The contaminated aqueous liquid is fed into a steam stripper causing the volatilization of essentially all of the organic contaminants and a portion of the aqueous liquid. The majority of the aqueous liquid is discharged from the steam stripper. The volatilized vapors are then condensed to the liquid phase and introduced into a bioreactor. The bioreactor contains methanotrophic microorganisms which convert the organic contaminants into mainly carbon dioxide. The effluent from the bioreactor is then recycled back to the steam stripper for further processing.
摘要:
A method is provided for measuring and controlling the level of an elevated temperature liquid in a container. The electrical voltage signal outputs of a plurality of temperature sensing devices at spaced elevations on the container are converted to digital form. The converted signals are periodically scanned in elevation sequence. A determination is made from the scanned signals of the location of the uppermost sensing means having a converted signal value of sufficient magnitude to indicate a temperature in the wall below the level of liquid in the container. Then a fraction, F, of the spacing between the sensing means, n, and the next above sensing means, n-1, is calculated as a function of the converted signal value, Sn-1. The measured level in the container is calculated as a function of, n, and, F, with respect to their location on the container. Finally, the rate of addition and withdrawal of liquid to and from the container is controlled based on the measured liquid level in the container.
摘要:
A method and apparatus is provided for suppressing noise which includes receiving a plurality of signals from an array of sensors and transforming each of these signals to the frequency domain. The transformed signals are beamformed so that noise sources can be identified by bearing and frequency range. A planewave-fit noise-suppression routine is then used to remove identified noise sources from the transformed signals and to provide a noise-suppressed transformed signal having signals from said identified noise sources suppressed.
摘要:
A method and apparatus for detecting, processing and tracking sonar signals to provide bearing, range and depth information that locates an object in three-dimensions underwater space. A Twenty Six Nearest Neighbor Peak Picker (TSNNPP) is disclosed that improves the detection of signals in noisy background by differentiating bandwidth (BW) characteristics of signals from BW characteristics of noise.
摘要:
A method and apparatus for detecting, processing and tracking sonar signalso provide bearing, range and depth information that locates an object in three-dimensional underwater space. An inverse beamformer utilizes signals from a towed horizontal array of hydrophones to estimate a bearing to a possible object. A matched field processor receives measured covariance matrix data based upon signals from the hydrophones and signals from a propagation model. An eight nearest neighbor peak picker provides plane wave peaks in response to output beam levels from the matched processor. A five-dimensional M of N tracker identifies peaks within the specified limit of frequency, bearing change over time, range and depth to specify an object as a target and to display its relative range and depth with respect to the array of hydrophones.
摘要:
A magnetometer compensation scheme wherein a magnetizable material adjacent the magnetometer is given a certain permanent magnetization to cancel the effect of the earth magnetic field at the location of the magnetometer.
摘要:
A magnetometer assembly wherein a magnetometer detector suspended from a gimbal is immersed in a wax so as to immobilize the detector. Desired gimbal operation is achieved by heating the wax in the vicinity of the detector.
摘要:
The present invention is for processing fluids, especially waste streams from nuclear power plants, and other fluid media that may be carrying valuable or useful substances, in order to collect the substances. The system uses sequential filtering and multiple passes to concentrate the substances, which allows the system to collect virtually all of the substances of interest to the user while reducing the volume of both the unwanted materials as well as the desired materials desired without affecting the purity of the fluid after processing. Additionally, the collected substances can be processed in-place, and without requiring any thermal processing prior to disposal of unwanted substances, or for the recovery and/or reuse of valuable substances.
摘要:
A solenoid selector switch shield for protecting the solenoid switch in a feeder assembly that feeds ammunition to a weapons system. The solenoid selector switch shield is designed to fit over the solenoid and the selector switch and prevent damage to the selector switch during both shipping and operation of the weapons system. In a preferred embodiment the solenoid selector switch shield is characterized by a cylindrical shield barrel having a bevelled access end and a mount end provided with an end mount bracket for mounting the shield to the feeder assembly. A middle bracket is also welded or otherwise attached to the shield barrel and is likewise secured to the feeder assembly. The bevelled access end of the shield barrel is designed to facilitate optimum access to the selector switch knob of the solenoid switch for manipulating the solenoid switch and determining the type of ammunition to be fed to the weapons system by the feeder assembly.
摘要:
A filter cleaning apparatus for cleaning air filters such as the air filter on the Abrams M-1 tank, which apparatus includes a cabinet fitted with an air exhaust system, brackets for receiving one or more air filters and an air supply manifold, air inlet manifold and sweep manifold for directing streams of air on the inside and outside element surfaces of the filter or filters and removing dust and dirt lodged in the filter elements. In a preferred embodiment a vibrating mechanism is built into the floor of the apparatus for vibrating the filters while simultaneously directing the streams of air on the inside and outside filter element surfaces and evacuating the dislodged dust and dirt particles from the cabinet.