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98 results about "Active volume" patented technology

The active volume describes the volume of water in the well where the pumps are actively pumping. This volume is located between two elevations monitored by level sensors. The top level sensor tells the control panel to cycle a pump on while the lower level sensor tells the control panel to cycle the pump off.

Distillation methods and devices in particular for producing potable water

The inventive device is embodied in the form of a chamber-oven for diffusing vapour and saturated hot air which circulate in a closed circuit by natural convection. Said device is embodied in the form of a domestic-use solar energy collecting device provided with a greenhouse whose surface is equal to 1 m2 and produces from 50 to 100 litres/day of distilled water. The device comprises a distillation unit arranged between two furnaces (59′, 79′) in a temperature-controlled container (48′). Said distillation unit comprises 100 flat thin hollow plates having a surface of 20 dm2 by face and an active volume of 200 dm3. The fine and tensioned walls (54) of said plates are provided with a hydrophilic coating (60′) and internal (56′) and inter-plate (58′) spaces. The lower chimney (59′) comprises a greenhouse (118′, 119′) whose bottom is embodied in the form of an impermeable black layer provided with a thin hydrophilic carpet on the rear part thereof. Saturated hot air at a temperature of 80° C. enters inside (56′) hollow plates from bellow and exits from the top at a temperature of 50° C. A high chimney (79′) is provided with a monoblock heat exchanger (84′) which is transversed by a non-potable water to be distilled which, afterwards is spread warm (40° C.) over the hydrophilic coating (60′). During passage through the heat exchanger (84) the air is cooled to 30° C. and moved down by gravity to the inter-plate spaces (58′) and exits therefrom at a temperature of 78° C. The distilled water condensed in the plates and by the heat exchanger is collected and removed. Brine is received in the bottom of the inter-plate space and distributed along the thin hydrophilic carpet of the bottom (122′) of the greenhouse. An air current passes along said hot carpet is heated and saturated and enters the plates. The brine liquor finally flows in an air-preheating tank (63′) which is emptied each morning. The greenhouse can be substituted by a heating tube transversed by a heating fluid or associated with another steam-jet tube. The more powerful chamber-ovens can produce at least 200 m3/day of distilled water for collective consumption. Said invention can be used for salt removal from seawater, co-generating electricity and potable water and for producing food concentrates.
Owner:THE THIRD MILLENIUM WATER

F2-laser with line selection

An F2-excimer laser has multiple closely-spaced spectral lines of interest around 157 nm, and one of the lines is selected by wavelength selection optics. The wavelength selection optics of a first preferred embodiment include a birefringent Brewster window enclosing the laser gas volume of the discharge chamber. The window preferably comprises MgF2 and is located at one end of the discharge chamber. One line is selected of the two when the optical thickness of the window is selected in coordination with rotatably adjustable, orthogonal refractive indices of the window. The transmissivity of the window is dependent on the orthogonal refractive indices and the optical thickness of the window. The wavelength selection optics of a second preferred embodiment include are at least partially within the laser active volume. In this way, line selection is performed in a manner which optimizes the combination of optical and discharge efficiency, resonator size and cost. The wavelength selection unit preferably includes a prism having a front surface oriented at Brewster's angle and a back surface oriented to receive and reflect an ordinary refracted ray travelling within the prism at a right angle to the back surface. The back surface also preferably includes a highly reflective coating to serve as the highly reflective surface of the resonator. The wavelength selection unit preferably further comprises an adjustment component for adjusting the orientation of the prism and for enclosing the other end of the housing, opposite the outcoupling end.
Owner:COHERENT GMBH

Method for treating nitrogen-containing wastewater from power plants by nitrifying bacteria immobilized on polyurethane

The invention discloses a method for treating nitrogen-containing wastewater from power plants by nitrifying bacteria immobilized on polyurethane, comprising the following steps: (1) separating and screening high-efficiency dominant nitrifying bacteria from a nitrogen removed sewage treating system which runs for more than 1 year and domesticating and carrying out enlarge culture on the dominant nitrifying bacteria; (2) immobilizing the nitrifying bacteria on soft polyurethane foam packing by the immobilization technology combining embedding and adsorption and adding the nitrifying bacteria to a fluidized bed reactor, wherein the volume of the added nitrifying bacteria accounts for 25-35% of the active volume of the reactor and the bacteria addition is 1g of wet strains per 150mL of packing; and (3) adopting intermittent culture at the early stage of running of the reactor, ensuring the inlet water to be the domestic sewage and adding nutrient substances, controlling the mass ratio of C:N:P to be 100:15-20:1, after intermittent running for 10d, the sewage treating system beginning normal running to carry out sewage denitrification when less polyvinyl alcohol in water is dissolved out (less foam or nearly no foam exists on the liquid level). The method of the invention improves the sewage denitrification efficiency.
Owner:STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD

Rapid vacuum desorption device and rapid vacuum desorption method for collecting volatile gas components in sample

The invention discloses a rapid vacuum desorption device and a rapid vacuum desorption method for collecting volatile gas components in a sample. The device comprises an air suction cylinder (2), an air suction piston (7), a piston handle (3) and a locking hanger (4), wherein the air suction piston (7) is arranged in the air suction cylinder (2), the piston handle (3) is arranged at the extended part of the air suction piston, and the locking hanger (4) is arranged between the air suction piston (7) and the piston handle (3); an air inlet (10) of an air inlet electromagnetic valve (9) is connected to the bottom of the air suction cylinder (2), a sample bottle is rotatably connected to the lower part of the air inlet electromagnetic valve (9), an air cleaning hole (16) and an air outlet (17) connected with an air-cleaning electromagnetic valve (8) and an air outlet electromagnetic valve (13) are respectively formed in the side face of the bottom of the air suction cylinder (2), and the air-cleaning electromagnetic valve (8) and the air outlet electromagnetic valve (13) are respectively connected with the air cleaning hole (16) and the air outlet (17) which are formed outside a shell; a display screen (15) and a main control board (1) are connected to the interior of the shell. The rapid vacuum desorption device is small in volume and is convenient to carry; the sample does not need to be subjected to complex pretreatment; the active volume of the volatile gas of the sample can be automatically calculated.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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