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Wastewater trickling filter air recirculation process
viii
New Patents
A damper assembly for use with the inlet duct of a pollution control system includes a plurality of vanes which are pivotally mounted for movement between an open position and a closed position wherein the vanes coact to close the duct. Each vane is pivotally mounted at one end on a closure plate releasably affixed over an opening sized to permit the vane to be removed therethrough. The vanes also include a hanger member receivable on a trolley rod which may be inserted into a second opening in the duct for supporting the vane after it has been disconnected from its pivot support and as it is being slid through the opening and into and out of position within the duct.
4486199 FLUIDIZED BED GASIFICATION ASH REDUCTION AND REMOVAL PROCESS Carl E Schenone, Joseph Rosinski assigned to The United States of America as represented by the United States Department of Energy
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ributor extending thereover for the distribution of wastewater over the filtering medium. A sealed insulating dome overlays the filter to provide a closed environment. An underdrain system extends underneath the filtering medium covering the floor of the filter and includes perforated sections into which the applied wastewater flows. The perforated sections extend into an underdrain gallery which collects the applied wastewater to be recycled by the pump through the distributor or expended out of the filter. Controllable air recirculation system for selectively moving air under the dome through the filtering medium includes a blower in communication with the gallery which directs air through the gallery from under the dome, through discharge conduits and into the filtering medium. The direction of air flow is reversible and the introduction of atmospheric air is provided after passing through a controllable heater. The rate of introduction of atmospheric air is controllable in response to a decreased dissolved oxygen level in the filter effluent and a vent discharges existing air within the system.
4486663
In a fluidized bed gasification system an ash removal system to reduce the particulate ash to a maximum size or smaller, allow the ash to cool to a temperature lower than the gasifier and remove the ash from the gasifier system. The system consists of a crusher, a container containing level probes and a means for controlling the rotational speed of the crusher based on the level of ash within the container.
DUAL INTEGRATOR FOR A RADIATION DETECTOR Roger E Arseneau assigned to Siemens Gammasonics Inc JA $3' $11
4486310 WASTEWATER TRICKLING FILTER AIR RECIRCULATION PROCESS Marvin L Thornton A wastewater treatment system and process utilizing a trickling filter with a rotary dist-
Improved detection circuitry is disclosed for calculating the position on the crystal of a scintillation event in a scintillation camera. Electrical signals developed by photomultiplier tubes for successive events are weighted by a resistor matrix and transferred to integrators which develop event position signals based on the quanta of radiation incident on the scintillation crystal. To improve the count rate without
New Patents
A damper assembly for use with the inlet duct of a pollution control system includes a plurality of vanes which are pivotally mounted for movement between an open position and a closed position wherein the vanes coact to close the duct. Each vane is pivotally mounted at one end on a closure plate releasably affixed over an opening sized to permit the vane to be removed therethrough. The vanes also include a hanger member receivable on a trolley rod which may be inserted into a second opening in the duct for supporting the vane after it has been disconnected from its pivot support and as it is being slid through the opening and into and out of position within the duct.
4486199 FLUIDIZED BED GASIFICATION ASH REDUCTION AND REMOVAL PROCESS Carl E Schenone, Joseph Rosinski assigned to The United States of America as represented by the United States Department of Energy
u
tl
2
t~
ributor extending thereover for the distribution of wastewater over the filtering medium. A sealed insulating dome overlays the filter to provide a closed environment. An underdrain system extends underneath the filtering medium covering the floor of the filter and includes perforated sections into which the applied wastewater flows. The perforated sections extend into an underdrain gallery which collects the applied wastewater to be recycled by the pump through the distributor or expended out of the filter. Controllable air recirculation system for selectively moving air under the dome through the filtering medium includes a blower in communication with the gallery which directs air through the gallery from under the dome, through discharge conduits and into the filtering medium. The direction of air flow is reversible and the introduction of atmospheric air is provided after passing through a controllable heater. The rate of introduction of atmospheric air is controllable in response to a decreased dissolved oxygen level in the filter effluent and a vent discharges existing air within the system.
4486663
In a fluidized bed gasification system an ash removal system to reduce the particulate ash to a maximum size or smaller, allow the ash to cool to a temperature lower than the gasifier and remove the ash from the gasifier system. The system consists of a crusher, a container containing level probes and a means for controlling the rotational speed of the crusher based on the level of ash within the container.
DUAL INTEGRATOR FOR A RADIATION DETECTOR Roger E Arseneau assigned to Siemens Gammasonics Inc JA $3' $11
4486310 WASTEWATER TRICKLING FILTER AIR RECIRCULATION PROCESS Marvin L Thornton A wastewater treatment system and process utilizing a trickling filter with a rotary dist-
Improved detection circuitry is disclosed for calculating the position on the crystal of a scintillation event in a scintillation camera. Electrical signals developed by photomultiplier tubes for successive events are weighted by a resistor matrix and transferred to integrators which develop event position signals based on the quanta of radiation incident on the scintillation crystal. To improve the count rate without