47results about How to "Avoid or reduce pollution" patented technology

The invention discloses a wastewater reuse method combining magnetic loading coagulation clarification and membrane separation. The method comprises the following steps: (1) a coagulant is added into a reaction tank to form small flocs; (2) the small flocs enter a loading and mixing tank to generate magnetic coagulation cores with magnetic carriers; (3) after the magnetic coagulation cores enter a flocculation tank, a flocculant is added to generate large-particle magnetic floccules; (4) after the magnetic floccules are stirred and dispersed strongly by a high-speed dispersion machine, magnetic carriers which are recycled via a magnetic drum separator return to the step (2), supernatant liquor enters a middle water tank via the collection by a water collecting pipe, after being pressurized by a water pump, the supernatant liquor enters membrane separating equipment for fine filtration, and filtered water is discharged for reusing. The method is used for removing particulate matters, colloid and a part of dissolved organic matters in advance before membrane filtration, so that membrane pollution degrees can be effectively avoided or reduced, and the cleaning period and the service life of membrane components are increased. The method can be used for the resource reutilization of the wastewater in industries of printing and dyeing, electroplating, paper-making and the like, as well as the upgrading and reconstruction and the tail water reuse of sewage treatment plants.

The invention relates to a novel crushing device for a building. The novel crushing device comprises a support frame and a shell, wherein a feeding hole is formed in the top of the left side of the shell; a motor is arranged at the top end of the shell; the output shaft end of the motor is connected with a rotating shaft on which stirring rods are distributed; tapered bulges are distributed at the upper part of the inner side wall of the shell; a left crushing roller, a right crushing roller and a mesh screen are sequentially arranged below the rotating shaft; the right end of the mesh screen is hinged with the inner side wall of the shell; a partition plate is arranged below the mesh screen; the left end of the mesh screen is connected with the partition plate through a spring; the mesh screen is provided with a vibrating motor; partition plate through holes are distributed in the partition plate, and the upper surface of the mesh screen is covered by a filter screen; a first discharging hole is formed in the left side of the shell located above the mesh screen, and a second discharging hole is formed in the right side of the shell located above the partition plate; a water outlet in the bottom of the left side of the shell; a water inlet and a spray head are arranged at the top end of the shell; and a water purifying tank is arranged at the right side of the shell and is connected to the spray head through a water inlet hose. Due to the adoption of the structure, the crushing operation can be more effectively performed, and dust pollution can also be avoided or relieved.

The invention discloses a preparation method of a nitrogen-doped titanium dioxide nanotube with response to visible lights, and comprises the following steps: a. metallic titanium or titaniferous compounds are used for preparing a metatitanic acid nanotube with a hydrothermal or solvothermal method; b. the metatitanic acid or titanium dioxide nanotube that is prepared by step a or a commercial metatitanic acid or titanium dioxide nanotube is dispersed in a water solution with nitrogen sources or a water and alcohol mixed solution, and agitated or ultrasonically processed for 10 minutes to 10 hours; c. serum that is obtained by step b is placed into a reaction kettle with polyfluortetraethylene lining and processed by sealed heating for 10 minutes to 10 days, and the reaction temperature is 50 to 350 DEG C; and d. the product obtained by step c is washed by deionized water, dried and baked, thus obtaining the nitrogen-doped titanium dioxide nanotube. The preparation method of the nitrogen-doped titanium dioxide nanotube of the invention has simplicity, cleanness and environmental protection, is applicable to batch preparation, and has low cost and strong adaptability, wide application of the prepared nitrogen-doped titanium dioxide nanotube.

The invention relates to an offshore loading, unloading and mooring system for liquid bulk carriers as well as a mooring method, and the invention is characterized in that the mooring system consists of three sets of mooring device; the mooring device is formed by using connecting components to connect a buoy, a suspension bullback-weight, a chassis bullbacke weight and a anchoring base one by one; when in mooring, each set of mooring device connects the buoy and a carrier together by connecting components, wherein, two sets of mooring device are connected with the head of the liquid bulk carrier; another set of the mooring device is connected with the stern of the liquid bulk carrier; the three sets of mooring device are in Y-shaped arrangement; the mooring system can anchor the liquid bulk carrier in an off-shore sea area to load or unload materials; compared with the prior art, the invention has the advantages of small occupation sea area, low investment, short construction cycle, convenient operation, safety and reliability. Moreover, the invention does not take up shore-line resources, and is easy to be recovered and ruled, as well as especially suitable for the loading and unloading of the liquid bulk carriers.

The invention discloses an integrated photoelectrocatalysis-membrane separation fluidized bed reaction device. The reaction device comprises a housing, an ultraviolet source, an electrode plate, a membrane component and an aerating unit. A water inlet and a water outlet are formed in the bottom of the housing. The aerating unit, the ultraviolet source, the electrode plate and the membrane component are arranged in the housing. The membrane component is connected with the housing. The distance between the ultraviolet source and the membrane component as well as the distance between the electrode plate and the membrane component are larger than or equal to the penetrating distance of ultraviolet light and the reaction distance of the electrode plate respectively. According to the integrated photoelectrocatalysis-membrane separation fluidized bed reaction device, multiple functions, including a photocatalysis function, an electrocatalysis function and a membrane separation function, are achieved, the mass transfer performance is good, the catalyst utilization efficiency is high, the catalyst can be recycled, waste water treatment efficiency is high, the structure is simple, and energy consumption is reduced.

The invention relates to an optical rain sensor device for a motor vehicle, having several structural elements (3a,3b,6,7), specifically at least one electromagnetic radiation source (6), at least one receiving device (7), at least one transmitting optical system (3a) and at least one receiving optical system (3b), wherein electromagnetic radiation (4,5) emitted by at least one radiation source (6) can be received by means of at least one receiving device (7), wherein the electromagnetic radiation (4,5) is forwarded by at least one radiation source (6) by means of at least one transmitting optical system (3a) to a limiting surface (10) of the windshield (1) of the motor vehicle with the motor vehicle exterior, is reflected there and is sent on by means of at least one receiving optical system (3b) to at least one receiving device (7). The surface of at least one of the structural elements (3a,3b,6,7) is provided at least partially with a nanocoating (12) which effects a photocatalytic self-cleaning of the surface.

The invention belongs to the technical field of microorganism gene engineering, and particularly relates to and discloses application of coded chloroplast carbonic anhydrase genes in establishing industrial engineering microalgae capable of resisting high-concentration CO2 and growing quickly. A method disclosed by the invention provides a basis and a practicable method for the industrial microalgae in fixing industrial CO2 waste gas.

The invention relates to working equipment, particularly for heat treatment, pickling, or the like, implementing high pressure liquid jets at cryogenic temperatures including a rotary or swinging tool (4) comprising one or more nozzles (11) for dispensing high pressure liquid jets at cryogenic temperatures, and a motor (21) for rotating or swinging the tool (4). The motor (21) is connected to the tool (4) via a rotary transmission shaft (22) and a transmission gearbox (23) containing an internal transmission mechanism, typically with sprockets (24) or belts. The equipment further comprises means (28) for feeding dry gas, such as nitrogen or dry air, in communication with the inside of the transmission gearbox (23) designed for and capable of feeding the inside of said transmission gearbox (23) with dry gas. Said injection of gas into the transmission gearbox (23) prevents the contamination of the inside of the transmission gearbox with atmospheric impurities.

The invention belongs to the technical field of release films, and relates to a release agent, a non-silicon release film containing the release agent and a manufacturing method of the non-silicon release film. The main component of the release agent is a compound containing a polyethylene ester group, the molecular formula of the release agent is shown in the specification, X is a positive integer greater than 0, R is any one or more structural formulae selected from -CnHm,-OCOCnHm and -OCONHCnHm, m is 3-50, n is 1-30, and m and n are integers. The release agent provided by the invention is uniform in coating thickness, can be easily dissolved in aromatic hydrocarbon, alkane solvents or mixed solvents such as toluene, xylene and heptane at 50 DEG C, can realize recycling of a base film, and avoids or reduces environmental pollution caused by industrial plastic waste.

The invention discloses an electric conduction brush used for a solder stripping device and the solder stripping device comprising the electric conduction brush. The solder stripping device can comprises a cathode plate and the electric conduction brush making contact with a PCB so as to apply voltage to the PCB in the solder stripping process. The electric conduction brush can comprise a brush handle electrically connected to an external power source, brush wires fixed and electrically connected to the brush handle, supporting parts which are overlapped with the brush wires and fixed to the brush handle together with the brush wires so as to support the brush wires, and a fixing part. The fixing part comprises a cover plate, and the cover plate covers part of the brush wires and part of the supporting parts and is combined to the brush handle so as to fix the brush wires and the supporting parts to the position between the brush handle and the fixing part. By the adoption of the solder stripping device comprising the electric conduction brush, the solder stripping rate can be increased, and the solder stripping effect is improved.

The invention discloses a shale oil development injection-production system and method. According to the shale oil development injection-production system and method, injection wells containing fracturing fracture nets are arranged in a shale oil reservoir, supercritical water is injected into the shale oil reservoir through a supercritical water injection system, and the supercritical water has high diffusivity and can overcome large capillary resistance; the supercritical water enters pore throat channels where a conventional water drive cannot enter, thus the swept volume is enlarged, the supercritical water is used for dissolving mineral components in the reservoir and conducting mild transformation on the reservoir, so that the pore throat channels are expanded, favorable conditions are created for flowing of shale oil, and the high reaction activity of the supercritical water is utilized, so that the shale oil can be converted from an immature state or a low mature state to a mature state in a short time, and long-chain molecules can also be converted into short-chain molecules, so that the quality and the flowability of the shale oil are improved; and pollution caused by shale oil in the ground refining process can be avoided or reduced, the natural environment is protected, and carbon emission is reduced.

The invention discloses a bimetal spiral steel pipe and a manufacturing method thereof. The steel pipe comprises a pipe body, wherein the pipe body surface extends outwards to form a convex rib which is spirally arranged around the outer wall of the pipe body; the convex rib forms a groove with the pipe body surface and is provided with an auxiliary inner steel band capable of covering the groove notch; and a hollow cavity is formed between the groove and auxiliary inner steel band, and is filled with concrete. The convex rib on the outer wall of the pipe body and the pipe body are integrally formed without any welding seam, and thus, can resist the dynamic load fatigue when bearing the dynamic load. The pipe body inner wall is provided with the auxiliary inner steel band made of a specific metal material, thereby enhancing the corrosion resistance and wear resistance of the steel pipe, avoiding the fluid pollution, reducing the thickness of the steel pipe main body and lowering the material cost. The pipe can be used in the occasions for delivering water or other special media, such as supply or discharge of water, high-corrosivity media, media with higher requirements for purity, high-temperature media and the like, and greatly lowers the manufacturing cost.

The invention provides a camera module, which comprises a plurality of camera module components, wherein at least two camera module components are connected through a hot melt adhesive. The inventionfurther provides a corresponding assembling method of the camera module. The method comprises: bonding camera module components by using a hot melt adhesive to obtain a camera module; bonding the camera module components through the hot melt adhesive, which comprises the step that at least two camera module components which are separated from each other are bonded through the hot melt adhesive, orthe connection between the at least two camera module components is reinforced through a hot melt adhesive. According to the invention, the repair rate of the camera module can be improved by adopting the hot melt adhesive, the variation of the optical performance of the camera module caused by a baking process can be avoided or reduced, the external impact can be resisted through the bonding force and the toughness of the hot melt adhesive, and when the camera module is repaired or disassembled, pollution of adhesive material powder or particles to an optical element can be avoided or reduced.

The invention relates to a vertical aerial greening planting device for a high-rise industrial factory building and a control method. The vertical aerial greening planting device is characterized in that a flower pond is arranged outside each floor of the high-rise industrial factory building, plants are planted in the flower ponds, and the flower ponds are fixed outside balconies and extend along the balconies. Through the arrangement of vertical aerial greening, a space close to the nature is provided for staff, the working pressure is relieved, and the working efficiency is improved; and due to the arrangement of the green plants on the outer facade of the building, beautiful scenery is brought to the appearance of the project.

The invention relates to a recycling method of an alkaline pulping byproduct. Lignin and alkali in black liquor are separated through step-by-step multiple acidification concentration. The method comprises the following steps: neutralizing the black liquor by using flue gas to reduce the pH value of the black liquor, separating out lignin in the black liquor, greatly improving the concentration of the lignin, enabling the lignin in the black liquor to form large particle precipitates with compact structures by using sulfuric acid and/or a flocculating agent, filtering out the lignin, and further dehydrating the lignin to obtain a lignin product. And causticizing the residual clear liquid after the lignin is stripped by lime, respectively cooking the plant raw material and washing the paper pulp, and using the obtained insoluble calcium salt as a building material. The method can be used for alkaline pulping of woody plants and non-woody plants. And technical support is provided for realizing net zero emission of carbon dioxide.