31 results about "Contamination zone" patented technology

A mobile containerized autopsy facility for use in distant contamination zones, comprising at least one enclosure which includes at least one seamless and sealable compartment, which compartment meets biohazard safety level 3 and 4 requirements. The facility consists of enclosures that are most commonly a conversion of at least one standard 40×8×9.5 foot refrigerated cargo container that may be easily transported by trailers or by air to remote sites and be operational without the dependence on local infrastructure.

The invention relates to a soil leakage liquid and surface runoff interception and purification system and a soil leakage liquid and surface runoff interception and purification method suitable for heavy metal pollution areas in the south. The system and the method are mainly used for controlling pollution dispersion in the heavy metal pollution areas and comprise the functions of intercepting water and soil loss in the pollution areas, purifying soil leakage liquid and runoff and repairing and enhancing degraded wetland. The system and the method are low in building, operation, maintenance and management costs, avoid energy consumption, have good interception and purification effects, can reduce the water and soil loss quantity in the pollution areas by over 90 percent, can treat water discharged from the system so as to enable the water quality to reach the national Environmental Quality Standard for Surface Water (GB3838-2002) and the III standard of the Quality Standard for Ground Water (GB/T14848-93), have a wide technological adaptive range, and can be popularized and applied in different types of heavy metal pollution areas in the south.

A mobile monitoring device for monitoring controlled contamination areas may include a motorized mobile structure, a sampling unit, and a central management and control unit. The motorized mobile structure is configured to move within an area to be monitored. The sampling unit is positioned on said mobile structure, and configured to perform sampling operations of air and/or surfaces of said area and obtain sampling data. The central management and control unit is operatively connected to the mobile structure and to said sampling unit. The mobile structure may be controlled by the central unit to reach predefined points of the area to be monitored. The sampling unit may be selectively activated and/or deactivated by said central unit in correspondence with said predefined starting points of said sampling operations.

Processes for removing hydrocarbon contaminants from soil and groundwater via enhanced biological denitrification. A contamination zone of groundwater and/or soil is identified to define a volume or zone of contaminants to be treated. A source of nitrate is applied to the contaminant zone to serve as an electronic acceptor for enhanced bioremediation of the petroleum hydrocarbons. A further carbon source, secondary to the primary contaminant hydrocarbons, is added to form a barrier about the nitrate treatment zone to stimulate degradation of any nitrate migrating from the treatment zone. A further carbon source is also added to stimulate the degradation of any residual nitrate once the primary carbon source of the contaminant hydrocarbons have been destroyed.

The invention discloses a refined site investigation method based on remediation efficiency. The refined site investigation method comprises the steps of performing site data arrangement and analysis,checking a heavily polluted region, correcting a range of a moderately polluted region, judging whether a lightly polluted region has pollution or not, and making a whole-field pollution partition grading diagram. For a specific soil pollution remediation site, a discrete point distribution sampling method, a density increased point distribution sampling method and an incremental point distribution sampling method are used in a targeted mode, the ranges of heavily, moderately and lightly polluted regions are precisely verified respectively, and finally a full-field-region pollution zoning andgrading graph is constructed in combination with sampling test analysis results. According to the refined site investigation method, precise identification of soil pollution of the contaminated remediation site is achieved, different site investigation methods are adopted for regions with different pollution degrees, the polluted region identification precision is improved, and the site remediation efficiency is improved.

The invention discloses a fired high-alkali coal slagging contamination prevention and control method based on boiler zone control. The method includes the following steps that (1) the inside of a boiler is divided into a slagging zone, a severe contamination zone, a strong contamination zone and a general contamination zone according to the temperatures; (2) combustion chamber section thermal load and burner zone wall surface thermal load parameters are reduced, the slagging zone is controlled to be the zone from a burner to the over-fire air height, the range of the slagging zone is reduced,and the temperature window for alkali metal releasing is reduced; (3) combustion chamber volume thermal load parameters are reduced, the severe contamination zone is controlled to be the zone from over-fire air to a combustion chamber outlet, and a large quantity of alkali metal compounds deposit in the severe contamination zone; (4) through reasonable heated surface arrangement, the strong contamination zone is controlled in the horizontal flue zone, and the contamination probability of the heated surface of a horizontal flue is reduced; and (5) through reasonable heated surface arrangement,the general contamination zone is controlled in the tail flue zone. According to the method, the technical support is provided for design and safe operation of a newly-built fully-fired high-alkali coal unit boiler.

The invention relates to a module assembly type isolation area access passage. The module assembly type isolation area access passage is composed of partition plate modules in a modular assembly mode; the module assembly type isolation area access passage internally comprises a personnel access passage, a material access passage, a dirt access passage and an isolation pollution area; one end of the personnel access passage is used for being connected with a cleaning area, and the other end of the personnel access passage is used for being connected with the isolation pollution area; one end of the material access passage is used for being connected with the cleaning area, and the other end of the material access passage is used for being connected with the isolation pollution area; one end of the dirt access passage is used for being connected with the cleaning area, and the other end of the dirt access passage is used for being connected with the isolation pollution area; the isolation pollution area is used for being connected with a pollution area; and the personnel access passage comprises an area used for personnel to wear and take off positive pressure protective clothing. The module assembly type isolation area access passage can be adapted to medical places for use, can be quickly assembled and disassembled, is convenient to move, can be repeatedly used, and is high in safety coefficient and low in construction cost.

The invention belongs to the field of underground water and soil pollution treatment, and discloses a quaternary underground water and soil pollution treatment method. The method is mainly technically characterized by comprising the following steps: pollution boundaries are roughly presumed according to a ground pollution source, an underground water runoff direction and pollution time; exploratory holes are drilled, and the pollution boundaries are determined; testing recharge wells are constructed on the edge of a contaminated site, the underground water influence radius R of the recharge wells is tested, the recharge wells are drilled at the positions away from the outer side of the boundary of the contaminated site by the underground water influence radius R, and the interval between every two adjacent recharge wells is smaller than 2R; step4, a horizontal well is constructed, horizontal well spacing is not greater than the groundwater influence radius R, a horizontal well water filter pipe is constructed by clinging to the water-resisting layer surface according to the stratum condition and covers the whole polluted area in length; and a water storage tank is dug on the ground surface in the determined polluted area, and polluted water in the polluted area is pumped out through the horizontal well and treated while clean water is recharged into the recharge wells. The treatment is more thorough, and the damage of surrounding buildings caused by underground water level decline is avoided.

The present disclosure discloses a mobile robot in which at least one suspected wet contaminated region where a dust concentration is relatively low is specified in a cleaning area, and the suspected wet contaminated region is specified as a wet contaminated region based on a floor image of the suspected wet contaminated region.

The invention provides a fixed-depth precise thermal remediation method and device. According to the invention, a multifunctional well and an extraction well are arranged in a contaminated area; an electric heating device is arranged in an area, corresponding to a contaminated stratum, in the multifunctional well; chemical injection pipes are arranged in the area, corresponding to a clean stratum,in the multifunctional well; the chemical injection pipes are connected with a direct-current cable; oxidizing agents are injected into the underground through the chemical injection pipes, and thendirect current is turned on, so a direct-current electric field can be generated between the adjacent chemical injection pipes, and a chemical oxidation reaction zone is constructed and formed on thelower side of the cleaning area; and the electric heating device is connected with alternating current to conduct depth-fixed accurate heating on a contaminated area, a part of pollutants are collected by the extraction well after being heated and volatilized, and the other part of the pollutants move upwards to enter a chemical oxidation reaction area to be oxidized and degraded. According to themethod, only the contaminated area is accurately heated according to the stratum distribution condition of pollutants; the method and the device are particularly suitable for areas with clean shallowlayers and deep contaminated layers, the volume of heated soil can be greatly reduced, and the energy consumption of heating and remediation cost are reduced.

A lighting array including one or more antimicrobial light segments configured to emit light sufficient to inactivate one or more microorganisms at a target surface may be installed within identified contamination zones of food or beverage preparation, processing, storing or packaging equipment or machinery. In an ice machine, for example, an array controller is configured for communication with an ice machine controller to receive ice machine status information signals. The status information signals are usable by the array controller to determine cycle, state, and/or usage information associated with the ice machine. The array controller may individually control activation of the one or more antimicrobial light segments based on the status information signals received from the machine controller to achieve inactivation of one or more microorganisms on target surfaces within the machine.