Patent File 231 Air pollution remediation system for fine particulate on road

รายละเอียด
หมวด: Patent File
ฮิต: 4917

Patent File 231 Air pollution remediation system for fine particulate on road

Back to Patent File List

No.
 Patent number Title Abstract Fulltext
1 US 6,699,577 Air purification-functioning road and method for purifying polluted air over road At least one part of a road surface is covered by a photocatalyst layer containing a photocatalyst such as titanium dioxide, etc. to purify pollutants in exhaust gases emitted from vehicles by photocatalytic reaction of the photocatalyst. Pollutant-originating matters as retained on the photocatalyst layer are washed away by rain water or sprinkled water. In one embodiment of the invention, road 12 is a road provided with a dewaterable pavement and rain water passes through surface layer 18 during raining, flows over and along base layer 16 and is discharged. In surface layer 18, numerous aggregates of small particle sizes 1802 are projected from the entire surface of concrete layer 1804. Titanium dioxide layer 20 is formed by injecting or spraying a mixture comprising titanium dioxide, cement, a filler and water onto the entire surface of surface layer 18 thinly and is water-permeable.

Web

Pdf
2 DE 102,007,059,549 Air washing unit in which fine and very fine dust is removed automatically by addition of very fine water particles thru very fine nozzles generally useful for air cleaning provides more efficient air cleaning
 Air washing unit in which fine and very fine dust is removed automatically by addition of washing water consisting of very fine water particles thru very fine nozzles. The cleaned air is then displaced by fresh unused air under pressure.

Web

Pdf
3 NL 1,031,640 An apparatus, system and method for passively removing particulate matter and / or NOx-containing air At least one of the walls (6, 7) is made from transparent material (9) so that the cavity (10) in between the walls can be heated by sunlight, creating a chimney effect which improves the air removal rate. An installation (2) for passively removing air comprising fines and/or nitrogen oxides (NO x) from an area next to at least one road comprises an upright support (3-5) for erecting along the roadside, an inner wall facing the traffic, and an outer wall, the two walls resting against the support and extending parallel to each other in order to define a cavity in between. The bottom part of the cavity includes at least one air inlet opening (14) provided in the inner wall for drawing in air from the road and the top part of the cavity includes at least one air outlet opening (15) for discharging air from the cavity.

Web

Pdf
4 US 9,732,477  Apparatus and method for controlling airborne pollution  An apparatus for controlling airborne pollution comprises a leeward wall located near a polluted region, and a windward wall located between the leeward wall and the polluted region. The leeward wall and the windward wall are spaced apart so as to define an airflow passageway therebetween. The windward wall extends upwardly to a first wall height. The leeward wall includes an upper portion extending above the first wall height. The upper portion is adapted to direct airflow downward through the airflow passageway towards at least one opening located below the first wall height for exhausting the airflow from the airflow passageway. 

Web

Pdf

 
5 US 5,643,795  Apparatus for purifying contaminated air  An apparatus for purifying contaminated air has an air inlet exposed to a road surface, an air outlet spaced from the road surface, a soil bed for being populated with microorganisms, the soil bed being disposed between the air inlet and the air outlet and allowing air to pass therethrough, a pipe interconnecting the soil bed and the air outlet, and embedded underground, and a fan for introducing air from the air inlet, passing the air through the soil bed, delivering the air from the soil bed through the pipe to the air outlet, and discharging the air from the air outlet. 

Web

Pdf
6 WO 2018/127,862  Device for separating solid particles from gaseous fluids  The invention refers to a device for collecting particulate matter (MP2.5-10.0) in gaseous fluids by using a filtering system with nanopores. This device is made up of only one compact unit and with the possibility of removing the filtering system when replacement is required. The device is energetically self-sufficient, using solar cells for driving the ventilation system that pushes the fluid to be treated into the device. Both the use of clean energy and the use of a nano-particle filtering system are novel concepts in the device for removing solids from gaseous fluids. 

Web

Pdf 
7 US 9,303,369  Embedding photocatalytic titanium dioxide in asphalt surfaces to reduce pollutants via photocatalytic reactions Methods for embedding photocatalytic titanium dioxide in asphalt surfaces to reduce pollutants via photocatalytic reactions include applying an amount of an asphalt surface treatment compound to an upper surface of the asphalt surface, the asphalt surface treatment compound including a mixture of a liquid carrier compound with a titanium dioxide (TiO.sub.2) photocatalyst. 

Web

Pdf
8 GB 2,543,928  Enclosed space including a photocatalytic coating and a lighting system An enclosed space, such as a tunnel or car park, includes an interior surface having a photocatalytic coating. A lighting system attached to the interior surface illuminates the coating with wavelengths in the range 340-450nm, activating the photocatalyst. The surface may be illuminated at an intensity greater than 1.0W/m2. The system may not emit light with wavelengths below 340nm. The lighting system may comprise fluorescent, short wave, gas discharge or metal halide lamps, or lasers or LEDs. The photocatalyst and lighting system may be used to reduce the amount of NOx and SOx gases, bacteria, mold and volatile binding compounds in the enclosed space. The photocatalytic coating may be cement based and may comprise a binder, cellulose ether, fluidising agent, at least one calcareous filler and at least one silane. The photocatalyst may be titanium dioxide in anatase crystalline form. Also claimed is the use of LEDs in a tunnel coated with a photocatalyst, the LEDs emitting light having a wavelength between 340-450nm but not below 340 nm. 

Web

Pdf
9 DE 202,011,001,466 U  Filter module  Filter module (1) for the adsorption of particles and / or for the conversion of gaseous pollutants with a front and a rear wall (2, 3) and a space formed between the walls of the air flow channel (5) having an inflow opening (4), said walls (2 , 3) at a wedge angle (K) in a wedge shape towards each other and at least the front wall (2) comprises filter material and is designed such that it can flow out from the (in the air flow channel 5) air. 

Web

Pdf
10 DE 102,006,032,753 Fine dust trapping method, involves producing water fog that drops over road surface, entraining fine dust through fog, precipitating water, trapping fine dusts at road surface, and discharging trapped fine dust Fine dust trapping method, involves producing water fog that drops over road surface, entraining fine dust through fog, precipitating water, trapping fine dusts at road surface, and discharging trapped fine dust

Web

Pdf
11 US 8,039,100 High durability photocatalytic paving for reducing urban polluting agents The present invention concerns a composite cement paving with photocatalytic action for reducing urban polluting agents, composed of a bituminous or cement foundation, a resin having the function of interface, a superficial cement layer with photocatalytic properties able to reduce organic and inorganic polluting agents, said paving also comprising reinforcing materials and possible suitably positioned fibrous materials. The paving thus realised presents a strong photocatalytic action, prolonged overtime, even in the presence of high mechanical stress caused by heavy traffic.

Web

Pdf
12 FR 2,751,891 Means of reducing inner city pollution using the existing drain system Device for treating polluted air, in particular in a city centre, comprising a system (16) of roads and buried collection reservoirs, in particular for rainwater, with a main pipe (26) and recovery points (24, 28) for the rainwater opening on the road and discharging into the pipe directly or via a grille, as well as a water treatment site. The device involves tapping (36) into the pipe, means (40) of depressing the volume of the pipe across the tapping and means (14) of treating the polluted air sucked through the tapping.

Web

Pdf
13 US 6,511,258 Method for controlling the amount of ionized gases and/or particles over roads, streets, open spaces or the like There is described a method for controlling the amount of ionized gases and/or particles suspended in the air above roads, streets, open spaces or the like. This is done by establishing an electrical field between the top layer of a road, street, open space or the like, and the said ionized gases and/or particles. By means of controlling the electrical field we will be able to control the amount of ionized gases and/or particles. The invention also indicates how the electrical field can be established between surfaces in the immediate vicinity of a road, street, open space or the like, for example in tunnel walls. The electrical field is established by making at least the top layer of the surface concerned electrically conductive and connecting it to earth or to one pole of an electrical voltage source.

Web

Pdf
14 US 8,574,345 Particle catch arrangement using static electric field and methods of using same This invention provides a method for the removal of smut, fine dust and exhaust gas particles from polluted air including providing a particle catch arrangement with a charged surface, the particle catch arrangement being arranged to generate a static electric field, wherein the electric field is at least 0.2 kV/m. The invention further provides a particle catch arrangement including a surface that can be charged, further including a generator arranged to generate charge to the surface that can be charged and to generate a static electric field of at least 0.2 kV/m, wherein the particle catch arrangement is part of or integrated with an object including street furniture.

Web

Pdf
15  GB 2,441,171  Photocatalytic NOx removing screen  A decorative photocatalytic screen 100 for the de-pollution of air, wherein a photocatalyst is applied as coating or dispersed in the material out of which the screen is made. The screen is preferably for use close to sources of air pollution, in such spaces as car parks, tunnels, and street canyons, or other spaces characterised by high levels of air pollution and low levels of UV-light required for the photo-catalytic effect. The screen contains a distribution of voids 103-105 and is mounted with enough distance from existing surfaces to result in a screen permeable to light and polluted air. The surface area of the screen may be increased by means of fins, ridges, dimples, holes or by the use of foams, aggregates, webs, weaves or felts. The decorative quality provides an additional incentive for the use of such screens in public spaces serves as an expression of photo-catalytic de-polluting technology for educational, marketing, and PR applications. The photocatalyst may comprise Titanium Dioxide (TiO2) for the reduction of Nitrous oxides (NOx). 

Web

pdf
16  CN 102,589,055  PM2.5 (Phase Modulation) integral air purification treatment device  The invention relates to a PM2.5 (Phase Modulation) integral air purification treatment device. The PM2.5 integral air purification treatment device comprises a box body (9), a PM10 filter screen (2), a PM2.5 filter screen (3), a fan (4), a nanometer absorbing layer (5), a photocatalysis system and a negative ion generator (13), wherein a grid-shaped air inlet (1) is arranged at one end of the box body (9), an air outlet (8) is arranged at the other end of the box body (9), the box body (9) is internally provided with a filtering room (10), a fan room (11) and a purification room (12), the air inlet (1) is communicated with the filtering room (10), the fan room (11) is communicated with the filtering room (10) and the purification room (12) at the same time, and the air outlet (8) is communicated with the purification room (12); the photocatalysis system consists of an ultraviolet lamp (6) and a PM2.5 modified photocatalyst layer (7), the negative ion generator (13) is arranged on the air outlet (8) so that air discharged from the air outlet (8) is fresher and more pleasant. The PM2.5 integral air purification treatment device disclosed by the invention has a simple structure and convenience and flexibility in manufacturing, and ensures that purification quality meets a rule of an associated standard by changing a corresponding treatment unit, wherein the purification rate and the bacteria removing rate are both over 99%. 

Web

pdf
17  CN 104,001,397  Pocket-sized and portable type air purifier  The present invention relates to a pocket-sized and portable type air purifier, which includes a portable shell with a small outline size. The air purifier can be powered by a rechargeable lithium battery and uses an ionization tube to generate high-energy positive oxygen ions, which kill bacteria and viruses and degrade formaldehyde, benzene and other various contaminants; the high-energy negative oxygen ions generated by the air purifier remove suspended particles; PM2.5 is eliminated by a bag dust collector. The air purification process does not use any particles of nanoscale materials, ultraviolet light and ozone which may be harmful to human body, or activated carbon and HEPA filter which needs frequent replacement. The air purifier in the present invention almost generates no ozone, has a small size and low cost, can be hung on a user's shirt pocket, neck, or belt, or be carried along with the user to use, and is a powerful weapon to deal with air pollution, especially severe outdoor and vehicle air pollution. 

Web

pdf
18  CN 102,410,586  Purification treatment device for PM2.5-level dust collecting and carried bacterium killing  The invention discloses a purification treatment device for PM2.5-level dust collecting and carried bacterium killing, which is characterized by comprising a box body (9), wherein the box body (9) is provided with a dust air inlet (1) and a purification air outlet (8), the box body (9) is separated into a dust removing unit (10), a power unit (12) and a purification unit (11) through baffle plates, the dust removing unit (10) and the purification unit (11) are provided with a plurality of slots; a more than PM10-level filter net (2), a PM2.5-level filter net (3), an active carbon and nano titanium dioxide modified photocatalyst filter net (5) and a PM2.5-level photocatalyst filter net (7) are inserted into the slots; and the purification unit (11) is also provided with an ultraviolet lamp bank. The purification treatment device has a simple structure, is convenient for manufacture, is beneficial to improvement of environment quality and environment safety level of public places, and has the advantages of good dust removing effect, low cost and convenience for replacement of the filter net. 

Web

pdf

 
19 GB 2,302,825  Reducing air pollution caused by traffic Part A: Reducing Air Pollution by Water Spray. Elevated sprinkler nozzles in groups of 3 are within their designated area activated at 3 discrete control levels created by area gas analysers depending on the severity of the measured pollution of preselected gases. To avoid a pollution build-up at approaches to traffic lights a combination of traffic light logic with gas analyser control logic is possible. Part B: Reducing Air Pollution by Suction into Rainwater Disposal Systems. The removal of the wetted pollutants into the sewer mains is assisted by negatively pressurizing the rainwater disposal systems as well as by water curtains behind electric exhaust fans. In cases of fan failures the maintenance of suction in the disposal system is safeguarded by louvers.

Web

pdf
20 US 8,241,396 Removal of smut, dust and exhaust gas particles with particle catch arrangement using static electric field
 This inventions provides a method for the removal of smut, fine dust and exhaust gas particles from polluted air including providing a particle catch arrangement with a charged surface, the particle catch arrangement being arranged to generate a static electric field, wherein the electric field is at least 0.2 kV/m. The invention further provides a particle catch arrangement including a surface that can be charged, further including a generator arranged to generate charge to the surface that can be charged and to generate a static electric field of at least 0.2 kV/m, wherein the particle catch arrangement is part of or integrated with an object including street furniture.

Web

pdf
21 EP 1,020,564  Road provided with air cleaning function and method of cleaning polluted air on road  At least one part of a road surface is covered by a photocatalyst layer containing a photocatalyst such as titanium dioxide, etc. to purify pollutants in exhaust gases emitted from vehicles by photocatalytic reaction of the photocatalyst. Pollutant-originating matters as retained on the photocatalyst layer are washed away by rain water or sprinkled water. In one embodiment of the invention, road 12 is a road provided with a dewaterable pavement and rain water passes through surface layer 18 during raining, flows over and along base layer 16 and is discharged. In surface layer 18, numerous aggregates of small particle sizes 1802 are projected from the entire surface of concrete layer 1804. Titanium dioxide layer 20 is formed by injecting or spraying a mixture comprising titanium dioxide, cement, a filler and water onto the entire surface of surface layer 18 thinly and is water-permeable.

Web

pdf
22  DE 2,503,024  Street air purification duct - extracts polluted air caused by traffic through rain water pipes and releases at high level  At the edges of the roadway (1) are gutters (2) which have ventilators (3) which force the air nearest the ground through pipes (4) into the rain-water sewer (5). The excess pressure formed in the sewer (5) forces the air through the pipes (6) and the rainwater down-pipes (7) of tall buildings (8) into the atmosphere. The sewer (5) used for the street air has ventilators (12, 13) along it. Special chimneys (11) conduct the polluted air out of the sewers (5). The rainwater downpipes (7) have backwash flaps (14). Preferably before the air is released back into the atmosphere it is subjected to a purification process to remove the pollutants in it produced from car exhausts etc.

Web

pdf
23  DE 102,007,019,028  Surface water and/or exhaust emission's harmful substances depolluting device, has chamber optionally connected with number of cleaning units for depollution of harmful substances and/or cleaning of exhaust gas over suction lines  The device has a foam impact body for forming a curb stone-like body, and arranged along lateral edges of lanes (2) e.g. motorways, in a force-fit manner. A foam impact wall (10) of the body is located at the lanes and provided with a number of inlet openings (11) for surface water. The wall is connected with a discharge line for discharging the surface water into a common drains line. A chamber (9) is optionally connected with a number of cleaning units (19) for depollution of harmful substances and/or cleaning of exhaust gas over suction lines. An independent claim is also included for a method for depolluting surface water and/or harmful substances of exhaust emission and for curb stone- and/or median delimitation of lanes e.g. motorways, through tunnels.

Web

pdf
24  CN 202,734,060 U  Ventilation system PM2.5 and air contaminant cleaning treatment device   The utility model relates to a ventilation system PM2.5 and air contaminant cleaning treatment device. The device comprises a box body (8), wherein the box body (8) is internally provided with a fan (2), a PM 2.5 filter screen (3), a modification photocatalyst system (4), a function ultraviolet lamp and a negative ion generating device (5) as well as a nanometer adsorption catalysis purification unit (6), and the air inlet of the fan (2) is opposite to the air inlet (1) on the box body (8); the PM 2.5 filter screen (3) is arranged on the outlet of the fan (2), and the modification photocatalyst system (4) and the PM 2.5 filter screen (3) are adjacent; air after the treatment of the PM 2.5 filter screen (3) and the modification photocatalyst system (4) is further treated by the function ultraviolet lamp, the negative ion generating device (5) and the nanometer adsorption catalysis purification unit (6) which are all arranged in the box body (8) close to an air outlet (7); the nanometer adsorption catalysis purification unit (6) is positioned on the upper part of the box body (8); and the function ultraviolet lamp and the negative ion generating device (5) are positioned on the lower part of the nanometer adsorption catalysis purification unit (6). The ventilation system PM2.5 and air contaminant cleaning treatment device provided by the utility model has the advantages that the structure is simple, the cleaning effect is good, and the public environmental health level is improved.

Web

pdf
25  US 8,268,052  Wall assembly  A wall assembly for mixing polluted air with less polluted air to provide moderately polluted air. The wall assembly includes means for dividing air from a roadway region into a lower part and an upper part, and means for permitting at least a portion of the upper part to flow substantially in one or more flow directions toward a leeward region. The wall assembly also includes means for directing the lower part substantially upwardly in a direction substantially transverse to the flow direction to intersect with the upper part and to mix the polluted air with the less polluted air, to provide the moderately polluted air proximal to the leeward area.

Web

pdf

Back to Patent File List