949 results about "Air contamination" patented technology

The invention relates to a method and a system for adjusting air quality of high-rise buildings by virtue of natural conditions. The method comprises the steps of acquiring index data of air quality of a local area, detecting indoor and outdoor air quality, humidity and temperature as well as outdoor wind power, transmitting detection data to a main control system, working out an air quality control strategy by the main control system according to related data of various detections as well as the index data of the air quality of the local area, sending the air quality control strategy to a local controller by the main control system, and controlling a total heat fresh air ventilator to start and stop ventilating by the local controller. The system comprises various air quality detection devices, a ventilation and air change device, the local controller, a local area network and the main control system, wherein the main control system is connected with an air quality index publishing system. According to the system and the method, both the indoor air condition and the outdoor air condition of the high-rise buildings are taken into account, existing facilities of the high-rise buildings are fully used, relatively ideal air at the best time is gathered, and the air quality of the high-rise buildings is controlled and regulated at low cost when the air contamination is uncertain.

The invention discloses an ultrasonic wave cleaner for a coating of an optical lens and a treatment method thereof, which belong to the fields of metal surface treatment technology, vacuum coating technology and optical technology. The ultrasonic wave cleaner is characterized by performing ultrasonic alkali cleaning, pure water rinsing and ultrasonic pure water rinsing on the optical lens in cleaning medium under the condition of pendular motion respectively, slowly and perpendicularly lifting the optical lens or ensuring that a liquid slowly descends to break away from a workpiece when running water is circularly filtered, and using hot air to dry the optical lens under quiescent conditions. A structure of the ultrasonic wave cleaner is that: a conveyer is provided with traveling girders, the girders are provided with grab hooks, and the hooks are suspended with washing baskets; and different working procedures are finished by different devices, namely a liquid tank body is matched with a pendulous device, a dehydration device and a drying device to finish respective working procedures. The ultrasonic wave cleaner and the method have the advantages that the ultrasonic wave cleaner and the method do not use inflammable, explosive and toxic organic solvents to wash, reduce energy consumption, avoid the air pollution in workshops, can effectively improve the cleanliness of products, and ensure that the adhesive force of the coating of the optical lens is remarkably improved.

The invention discloses an instrument for monitoring small particulate matters in air. The instrument is characterized in that small particle features of the small particulate matters in the air is monitored, and obtained electrical signals of the small particle features of the small particulate matters in the air to be monitored are processed and analyzed through a master control circuit, so as to judge the particle sizes of the small particulate matters in the air and further analyze the mass concentration and the particle number concentration of the small particulate matters. When the instrument is used for monitoring the air, the air to be monitored is diluted through introducing clean dry gas into a main gas path, so that mutual influence of the particulate matters, which is caused by overlap, is avoided, and the signal to noise ratios of the collected signals are increased; and besides, clean dry gas is introduced into a sensor, so that a circle of protection is formed on the periphery of the air to be monitored, and parts such as a light source, and the like in the sensor cannot be polluted by the air to be monitored.

The invention provides an air quality monitoring and evaluating method. The method is based on an air quality evaluation model QOI algorithm, and is used for monitoring and evaluating the environmental quality. The method specifically comprises the following steps: 1) acquiring an actually measured concentration value of each pollutant in the air in real time through a data acquisition module by referring to a graded concentration limit value of each pollutant in the air, correspondingly calculating and obtaining an air quality index IAQI of each pollutant, and transmitting the air quality index IAQI of each pollutant to an environment-friendly intelligent monitoring terminal; 2) according to the IAQI of each pollutant obtained at step 1), selecting the maximum value of the IAQI to determine the AQI of the air quality index, and monitoring the air quality in real time according to the air pollution index through the environment-friendly intelligent monitoring terminal; 3) determining and evaluating the air quality level, the air quality category and the color representing the air quality according to the AQI grading standard.

An air purification member is provided that can reduce the generation of unpleasant odor or the occurrence of air contamination without necessitating frequent cleaning or replacement. The air purification member can be part of an air purification unit or an air conditioning apparatus. A first photocatalytic filter of an air purifier is a filter for purifying air that contains particulates containing viruses or microbes, and is provided with a photocatalytic filter and a photocatalytic apatite. The photocatalytic filter collects the particulates. The photocatalytic apatite removes viruses or microbes that are contained in the particulates collected by the photocatalytic filter.

The invention discloses an automatic paint spraying device for metal castings. The automatic paint spraying device comprises a paint spraying barrel with an opening in the top end. Support columns are correspondingly mounted on the four corners of the bottom end of the paint spraying barrel. An air cylinder vertically arranged is fixedly arranged on the side wall of the bottom end of the paint spraying barrel through bolts. A movable plate is welded to a piston rod of the air cylinder. The movable plate is located on the inner wall of the bottom end of the paint spraying barrel. The top end of the movable plate is rotationally connected with a mounting plate horizontally arranged. A first electric motor is embedded into the movable plate. An output shaft of the first electric motor is connected with a gear. The gear is located on one side of the mounting plate. Tooth mouths distributed in an array manner are mounted on the side walls of the periphery of the mounting plate. The tooth mouths are engaged with the gear. A fixing ring is slidably connected into the paint spraying barrel. An annular air outlet pipe and a liquid spraying pipe are mounted on the inner wall of the fixing ring. The air outlet pipe is located above the liquid spraying pipe. By the adoption of the automatic paint spraying device, the multi-angle paint spraying of the metal castings can be achieved, the paint spraying effect is good, the quick mounting and discharging of the metal castings are achieved, and the air pollution is reduced.

The invention relates to a formula and preparation technology of a granular non-noble-metal efficient integrated air purification composite material, and belongs to the technical field of adsorption catalysis and air pollution treatment. The composite material is characterized by taking zeolite, meerschaum, a porous active carbon material, iolite or a self-made carrier as a catalyst carrier, taking one or several non-noble-metal oxides as an active component and a nitrogen-containing organic auxiliary agent, and being prepared through an immersion method. The catalyst has a column granular shape, and has the capacity of the non-noble-metal oxides being 12-15 wt% and the content of the nitrogen-containing organic auxiliary agent being 2.0-4.0 wt%. The material can effectively adsorb and purify formaldehyde, TVOC, benzene, toluene, xylene, ozone, sulfur dioxide, nitrogen dioxide, hydrogen sulfide and ammonia gas in air in an integrated manner at normal temperature and humidity, and the overall purification rate is no less than 95%. The material is suitable for places, such as offices, office buildings, living rooms, shopping malls, hospitals and hotels, for integrated air purification.

The invention relates to a lasting aldehyde and odor removing bag with mineral micro powder which is a solid control product for removing air odor pollutions, i.e. formaldehyde, benzene, TVOC, and the like which are generated due to decoration. The lasting aldehyde and odor removing bag with the mineral micro powder is formed in such a way that aldehyde and odor removing mineral micro powder is manufactured into swelling hollow beads (strips), and then the swelling hollow beads (strips) are respectively packaged into porous fibre bags. The swelling hollow beads (strips) are prepared from the follow four groups of components: 60-98 percent of mineral micro powder combined by one or several of meerschaum with the particle diameter of 500-2000 meshes, fluorspar, sodium bentonite, kaoline, diatomite, activated clay, tourmaline powder, white mica power, titanium pigment, expansion graphite, corundum, and the like, 1-40 percent of aldehyde and odor removing matters, 0.01-5 percent of bonding agent, and the balance of 5-15 percent of water. The lasting aldehyde and odor removing bag with the mineral micro powder can be conveniently and neatly placed at air pollution sources, thereby achieving the purpose of lasting aldehyde and odor removal.

The invention discloses a method for treating haze and indoor air pollution by using a tourmaline honeycomb body. The method comprises the following steps: preparing the tourmaline honeycomb body, mounting the tourmaline honeycomb body at the certain position of dust-containing flue gas, tail gas and air or water vapor channel, contacting and rubbing water molecules and dust-containing gas in airflow and tourmalines in honeycomb holes, performing electric polarization to generate negative ions, attracting and combining with superfine particles with positive charges in the flue gas, tail gas and air through the negative ions so as to neutralize the positive electricity of the superfine particles, so as to enable the superfine particles to be not repelled with one another and aggregated and settled; and removing heavy metal ions and acid radical ions in the flue gas and air through the chemical degradation of formaldehyde, NOx, CO and unburned hydrocarbons through the negative ions and strong adsorption property of the tourmaline, so as to reduce or eliminate the air pollution, and purify air. The method is good in effect, can be continuously operated and has the characteristics of high efficiency, energy conservation, simplicity and economical efficiency, and the operation consumption and the cost are reduced by over 30 percent.

An image forming apparatus including a fan disposed between an exhaust port and a filter, and a controller configured to perform at least one of first fan control and second fan control when at least one switching condition is satisfied among one or more switching conditions for switching fan control, the first fan control being for controlling the fan to generate an air current when an in-apparatus temperature detected by a temperature sensor is higher than a threshold temperature, the second fan control being for controlling the fan to generate an air current when an air contamination amount detected by a contamination sensor is larger than a threshold contamination amount.

The present invention is directed toward a movable airborne contaminant control system having a retractable/extendable booth attached in a sealing manner to a ventilation unit, preferably mounted on wheels. The ventilation unit includes a filter assembly that opens into the work are formed by the booth. Front doors support air filters. In operation, the ventilation unit draws air in a longitudinal laminar flow over one or more work pieces. The filter assembly captures both particulates and VOCs to allow the exhaust air to include an extremely low contaminant load.

The invention provides a device and process for blowing off ammonia in skim serum through a supergravity method and belongs to the technical field of blowing off ammonia gas in the skim serum. The problems that in the prior art, an ammonia removal treatment process is complex and poor in effect, ammonia cannot be collected, and air pollution is caused are solved. The device comprises a supergravity rotating packed bed provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet, the air inlet is connected with a centrifugal fan through a vortex shedding flowmeter, the air outlet is connected with a following ammonia recovery or treatment device, the liquid inlet is connected with a raw material tank through a magnetic circulating pump and a liquid flowmeter, the liquid outlet is connected with a liquid storage tank through a U-shaped liquid sealing device, a liquid distributor, a rotor and packing are arranged in the supergravity rotating packed bed, and a demisting device is arranged on the air outlet. The ammonia removal rate is high and can reach 62.5%, the gas is convenient to collect and treat when exhausted, and the purposes of protecting the environment and saving resources are achieved.

The invention discloses an air purifier and a method for controlling edgewise purification of the air purifier, wherein the method particularly includes the steps: 1 moving the air purifier along the edge of a space to be purified and detecting air pollution level in real time while purifying air; 2 locating a pollution source by using the air purifier and purifying air of the located pollution source when the detected air pollution value is larger than a first preset value; 3 moving the air purifier in a first preset travel mode when the detected air pollution value is smaller than a second preset value; and 4 returning to the step 1 when the air purifier moved in the first preset travel mode meets preset requirements, otherwise, continuing moving the air purifier in the first preset travel mode. By means of designing an optimal travel path, the air in a preset area is effectively purified, and purifying efficiency is improved under the condition of limited energy supply.

An air pollution sampling system and a method thereof applied to a wide-area air sampling are revealed. Air is forced into an air sampling unit by movement of a vehicle, for performing an active air sampling without a power source. An air sampling unit includes a plurality of baffle plates so as to adjust air sampling rate and avoid interference caused by turbulence generated during the movement of the vehicle. A positioning device provides geographic coordinates, vehicle speed and time. An information processing device integrates sampling flow and positioning information from the positioning device, collects information generated by the sampling system, and computes statistics of the accumulated samples and relative sampling positions. By the collected sampling positions, time and flow rate, the sampling amount is obtained through data processing and calculation. In combination with the display of positioning data, the geographic area represented by the air samples could be understood more clearly.

A method and apparatus for reducing air contamination using a contaminant adsorbent to remove contaminants from air, and a nonthermal plasma to desorb and oxidize or detoxify the contaminants. The adsorbent may be comprised of a unique combination of a zeolite with a material having a high dielectric value. The power supply for the nonthermal plasma reactor is designed to seek and operate at the system resonant frequency. In one embodiment, the adsorbent material is separated from the nonthermal plasma reactor. In this embodiment, heat is applied to the adsorbent material to thermally desorb contaminants during a desorption/regeneration phase. Air is recirculated within the system to move desorbed contaminants from the adsorbent material to the nonthermal plasma reactor for decomposition. The recirculating air repeatedly moves contaminants through the reactor until they are destroyed or the desorption/regeneration phase is complete.

The invention discloses an air quality prediction method based on a deep bidirectional long short-term memory network. Aiming at the current situation that air pollutants are difficult to predict, theinvention designs a high-precision prediction algorithm. According to the algorithm, the time series data of historical pollutant indexes is innovatively processed by using the deep bidirectional long short-term memory network, so that prediction and analysis of pollutants are carried out; and the algorithm is built by a PYTHON 3.6.5 Keras tool. The method comprises the following steps: S1, dividing time series data of the plurality of pollutant indexes into a training set, a verification set and a test set; S2, inputting the data of the training set into the deep bidirectional long short-term memory network for training until the network converges; S3, inputting the data of the verification set into the network for verification, adjusting the parameters of the network, and finally obtaining optimal parameters; S4, applying the network to the test set to evaluate the model to obtain a high-accuracy effect; and S5, storing the model and applying the model to the actual situation. The algorithm provides a new solution for air pollutant prediction, and is further widely applied to the field of air pollution prediction.

A recirculating bearing lubrication system for a gas turbine engine that comprises a housing for the engine that serves as a primary static structural support, a rotor shaft for mounting rotational components of the engine, at least two bearings for supporting the rotor shaft within the housing and an air intake for supplying engine air comprises a generally annular lubricant source mounted about the engine intake to cool lubricant for the bearings; a solenoid that seals the lubricant from air contamination during storage of the engine and unseals it upon starting the engine; a lubricant pump that circulates the lubricant; at least one lubricant spray jet that receives circulating lubricant and sprays lubricant onto the bearings; and a sump for collecting excess lubricant sprayed on the bearings.

The invention relates to a multifunctional high-efficiency integrated air pollution processing material and a preparation technology thereof, which belong to the technical field of normal temperature adsorption catalysis and air cleaning. The multifunctional high-efficiency integrated air pollution processing material is composed of an active carbon carrier with high specific surface area, a titania nano-tubes catalysis component, a nano non-precious metals catalysis component, a nano precious metals catalysis component and a high efficiency antibiosis component. The material has rapid removing and killing efficacy for common air pollutant such as benzene, toluene, VOCs, formaldehyde, CO, SO2, NO2 and bacteria, and can satisfy the requirement of removal of various indoor air pollutants with high efficiency under real environment.

The invention provides a method for improving soil by using an organic garden mulch. The method comprises the following steps that 1, composting and decomposing treatment is conducted on garden greening waste, straw, wasted mycelia, edible mushroom waste and furfural residues, and the organic garden mulch is obtained after dyeing processing; 2, the organic garden mulch covers the leveled soil surface. By adopting the method, the phenomenon that the area of exposed ground of an urban garden is excessive can be improved, raising dust, dust particle adsorption and air pollution are reduced, water and soil loss and soil hardening of the exposed ground are avoided, a processing technology is simple in condition, the operating requirements are low, the appearance requirements can be met, and the acid-base property and the organic matter, nitrogen, phosphorus and potassium content of soil and a soil structure can be also improved.

A glass fibre reinforced composite floor is prepared through mixing unsaturated polyester resin, trigger, demoulding agent, filler, thickening agent and low-shrinkage additive together, adding glass fibres, pressing to obtain sheet, ageing, laying surface decoration layer, high-temp die pressing and surface antiwear treating. Its advantages include high elasticity, no deformation, high antiwear nature, flame retardation and no air pollution.

The invention discloses a construction method for pre-drilling hole-forming base-expanding and grouting of a prestressed concrete special-shaped pile. The method includes the steps that step one, a single-axis drilling machine is adopted for hole drilling according to a set depth; step two, hole reaming is carried out on the end portion of the pile according to a set diameter and a set height; step three, pile end cement paste and pile periphery cement paste are grouted, and the drilling machine is lifted while grouting is carried out; step four, by means of self weight of the prestressed special-shaped concrete pile, the pile is planted into a designed elevation; step five, through hardening of pile end cement paste and pile periphery cement paste, the pile, the soil mass at the pile end and the soil mass on the periphery of the pile are integrated to manufacture a pile foundation which is borne by a precast pile body, the pile end cement paste and the pile end soil mass. The method has the advantages of being free of soil squeezing, noise and air pollution, and horizontal bearing capacity of the pile body is improved substantially; kinds of interlayers can be penetrated, and the method is adapted to the geological condition that a bearing course at pile end is large in variation; the elevation at the pile top is controllable without the need for pile cutting. The phenomenon that a pile head is damaged or compressive pre-stress of the pile body changes due to the pile cutting can be avoided, the pile body is reliable in long-term durability and more reliable in integrity.