45results about How to "Avoid secondary pollution" patented technology

The invention discloses grabbing robot equipment with silicon wafer transportation and dust removal functions. The grabbing robot equipment comprises a main body, a working area is arranged outside the main body, the main body can move left and right in the working area, a linkage cavity is formed in the main body, a linkage motor is fixedly arranged in the linkage cavity, rotating rods are symmetrically arranged at the left end and the right end of the linkage motor in a power connection mode, and a driving bevel gear is fixedly arranged on the portion, located in the linkage cavity, of an outer circle face of the rotating rod on the right side. According to the equipment, a silicon wafer is transported after dust removal, the silicon wafer is fixed through a suction disc firstly, dust onthe surface of the silicon wafer is removed by blowing through a dust removal opening, the left and right ends of the silicon wafer are clamped and turned over through robot arms, dust on the back face of the silicon wafer is removed, the robot arms drive the silicon wafer to rotate in the moving process to achieve the comprehensive dust removal effect, dust diffusion is prevented through air suction of dust suction openings in the two sides, and the silicon wafer is prevented from being secondarily contaminated.

The invention discloses a cleaning method for an electrostatic restaurant cooking fume purification assembly, and belongs to the technical field of environmental protection. The cleaning method for the electrostatic restaurant cooking fume purification assembly comprises the steps that the electrostatic restaurant cooking fume purification assembly is ultrasonically cleaned through cleaning liquidand ultrasonic waves; after being ultrasonically cleaned, the electrostatic restaurant cooking fume purification assembly is rinsed with clear water and is then dried; and the cleaning liquid is after-treated after ultrasonic cleaning. The invention further discloses a cleaning device for the electrostatic restaurant cooking fume purification assembly. The cleaning device for the electrostatic restaurant cooking fume purification assembly comprises an ultrasonic cleaning tank, a clear water rinsing tank and a drying tank. According to the cleaning method and device for the electrostatic restaurant cooking fume purification assembly, the cleaning efficiency is improved under the combined action of the ultrasonic waves and the cleaning liquid; meanwhile, potential harm caused by manual cleaning is avoided, and the labor intensity of cleaning is relieved; furthermore, air blowing and electric infrared heating are used for drying, so that the cleaning time is shortened; and in addition, secondary pollution can be prevented in the aftertreatment process.

The invention discloses a dust removal device for a shipyard processing workshop. Two vacuum suction devices are symmetrically arranged on the side wall of the upper end of a tangential double-inlet cyclone along the circumference, stop valves are arranged at the connection ends of the vacuum suction devices and the tangential double-inlet cyclone, the outer side end of each vacuum suction deviceis provided with a drainage fluid inlet and a foul air suction inlet, and the drainage fluid inlets are connected with a compressed air connector; four high-pressure water mist assemblies are circumferentially arranged at the top of the side wall of the tangential double-inlet cyclone at equal intervals, a clean air discharge pipe is arranged at the top of the tangential double-inlet cyclone, andthe bottom of the tangential double-inlet cyclone is connected with a sedimentation tank through a dust falling opening. The dust removal device for the shipyard processing workshop has the advantagesof being high in dust removal efficiency, low in energy consumption, free of pollution, low in investment, safe, environmentally friendly and high in economy.

The invention discloses an environment-friendly air conditioner with an automatic cleaning function. The environment-friendly air conditioner comprises a casing, a cleaning device, a dust collection box and a control box, the cleaning device is arranged inside the casing, the dust collection box is arranged below the casing and closely connected with the same, and the cleaning device is connected with control device. Water is ejected through a small water tank, a cleaning agent is extruded through a cleaning agent containing box, dust on an air outlet is cleaned by a cleaning brush moving up and down at the air outlet, then sewage generated after cleaning flows into the dust collection box, so that dust and dirt after cleaning are effectively prevented from directly falling onto the ground, walls or other articles, secondary pollution is avoided, and good environment-friendly effect is realized.

The invention discloses a preparation method and application of a magnetic reduction microbial flocculant, and relates to a preparation method and application of a microbial flocculant. The inventionaims to solve the problem of low heavy metal reduction efficiency of a microbial flocculant. The preparation method comprises the steps: 1, preparing Fe3O4 particles; 2, preparing a microbial flocculant MFX solution; 3, preparing a magnetic microbial flocculant; and 4, loading generated zero-valent iron on the magnetic microbial flocculant by adopting a liquid phase reduction method to obtain themagnetic reduction microbial flocculant. The flocculant has the advantages of high efficiency, suitability for treating low-concentration heavy metal wastewater and the like, has the characteristics of magnetic separation and high reduction adsorption, is easy to separate and recover, has high flocculation efficiency and high reduction adsorption efficiency, and avoids secondary pollution; and thepreparation process is simple, easy to recycle and easy to amplify, and the flocculation usage amount is reduced. The method is suitable for flocculant preparation and heavy metal removal.

The invention discloses a tripod for a washing machine and the washing machine with the tripod. The tripod comprises a tripod body, wherein three support legs extending outside from the center of the tripod body are arranged on the tripod body and are separated along the circumferential direction of the tripod body, and every two adjacent support legs form a 120-degree angle; and two side grooves and a middle groove are formed in each support leg, openings of the side grooves face to an inner cylinder of the washing machine, the direction of the middle groove is opposite to the directions of the openings of the side grooves, the middle groove is located between the two side grooves, and a reinforcing rib extending along the radial direction of the tripod body is arranged in the middle groove. According to the tripod disclosed by the embodiment of the invention, the problem that the tripod for the washing machine is inconvenient to flush due to more reinforcing ribs can be avoided, the secondary pollution of the tripod can be avoided, the corrosion of the tripod is reduced, and the service life of the tripod is prolonged.

The invention discloses a disassembly-free back-blowing purification device for a diesel particulate trap. The device comprises T-shaped port valves, an air blowing device and a particulate collecting device. The air blowing device is formed by an air compressor and an air storage bottle. The inlet end and the outlet end of the particulate trap are connected with the two T-shaped port valves respectively, and the particulate trap is provided with a differential pressure transducer and a temperature sensor. The particulate collecting device is connected with the outlet end of a T-shaped port through a flange and comprises a safety valve and a quick dismounting device. Through cooperative use of the air blowing device and a controller, the disassembly-free back-blowing purification device for the diesel particulate trap can discharge ash and particulate matters in the diesel particulate trap from a tail gas inlet end on the premise that a carrier of the diesel particulate trap is not disassembled, back-blowing purification of the carrier of the diesel particulate trap is achieved, the ash and particulate matter cleaning efficiency of the diesel particulate trap is greatly improved, and the use cost of a diesel engine is reduced.

The invention discloses an industrial pulse dust removal system and a using method thereof. The industrial pulse dust removal system comprises a supporting frame, a box body and a dust remover body; an inclined plate is fixedly installed at the inner side end of the supporting frame, a recycling box is arranged at the upper end of the inclined plate, and a trigger mechanism is arranged at the lower end of the inclined plate; a dust remover main body is fixedly mounted in the center of the supporting frame, a discharging pipe is fixedly mounted at the lower end of the dust remover main body, and a discharging mechanism is arranged in the dust remover main body. When a recycling box moves to the upper end of a placement plate, gravity enables the placement plate to move downwards, a second spring is extruded, a control switch is extruded, an indicator light is lightened, meanwhile, a control box starts a water pump, a water source is sucked through an injection pipe, then water is sprayed out through a spraying pipe, and dust at the upper end in the recycling box is sprayed to form hardened blocks; therefore, movable treatment is facilitated, and secondary pollution caused by dust raising during moving treatment is prevented.

The invention relates to the technical field of cargo transportation, in particular to an AGV transfer trolley used in a spraying workshop. The AGV transfer trolley comprises a trolley body, wherein the lower surface of the trolley body is provided with four universal wheels, the upper surface of the trolley body is provided with a protective cover, the upper surface of the trolley body is furtherprovided with a lifting device, and a cover cap is arranged over the protective cover; and the lifting device comprises a bottom frame, wherein a pair of symmetrical outer scissor fork arms which canslide along the cavity wall are arranged on the inner cavity wall of the bottom frame, an inner scissor fork arm is also arranged on each outer scissor fork arm, a support is tightly welded inside the bottom frame, a hydraulic pump is arranged right above the support, a fixing frame is further arranged between the bottom ends of the two outer scissor fork arms, a hydraulic cylinder is arranged onthe fixing frame, and a cargo placement table is further arranged at the top ends of the outer scissor fork arms and the inner scissor fork arms. According to the AGV transfer trolley, the pollution,from paint to cargoes, generated in the spraying workshop is effectively avoided through the arranged lifting device and the protective cover.

The invention discloses a cleaning agent for a washing machine slot. The cleaning agent comprises the following components in percentage by weight: 55-68% of sodium carbonate, 20-30% of sodium percarbonate, 1-6% of a bleaching activator, 0.1-0.6% of a binary compound enzyme, 0.3-2% of a surfactant, 2-8% of calcium carbonate and 2-8% of sodium silicate. The cleaning agent for the washing machine slot, disclosed by the invention, can effectively remove dirt from the washing machine slot, is non-corrosive to a washing machine, can effectively kill and inhibit harmful bacteria and avoid secondary pollution to clothes, and meanwhile is inirritative and safe to human bodies.

The invention discloses a blackboard eraser cleaning device. The blackboard eraser cleaning device comprises a box, a dust treating cavity and a dust collecting cavity, wherein a blackboard eraser storing opening is formed in the middle of the top of the box; a control switch is arranged on the box and on the left side of the blackboard eraser storing opening; a dust treating device is arranged in the dust treating cavity and comprises a driving wheel, a driven wheel and a belt; a motor and a water tank are respectively arranged on the outside of the dust treating cavity and on the outside of the dust collecting cavity and in the box; and fan blades are arranged on the left side wall of the water tank through a supporting rod. Dust on a blackboard eraser can be cleaned through bristles on the belt and is collected into a dust collecting bag in the dust collecting cavity, the dust on the blackboard eraser can be removed quickly and effectively, secondary pollution is avoided, lower portions of the fan blades soak in water in the water tank, after the water is atomized, atomized water is blown into the dust treating cavity, the dust is mixed with the atomized water, the dust collection efficiency is greatly improved, the dust is not scattered towards the outside of the box, and a good teaching environment is guaranteed.

The invention relates to a water conservancy project desilting device. The water conservancy project desilting device comprises a box body I, the left part of the box body I is provided with a double-acting type rotary dirt collecting device, a conveying device I is arranged on the right side of the double-acting type rotary dirt collecting device, an inlet of the conveying device I is arranged onthe right side of a mounting port I, and an outlet of the conveying device I communicates with a feeding port in a drying device; a discharging port in the drying device communicates with a feeding port of a drying material storage box through a conveying device II, and the drying material storage box is arranged at the right lower corner of the box body I and is fixed to the box body I; and a material pushing-out device is arranged on the inner wall of the left side of the drying material storage box, a discharging port which is opposite to the material pushing-out device is formed in the right side wall of the drying material storage box, and an opening and closing device is arranged on the discharging port in the drying material storage box. According to the water conservancy project desilting device, silt can be cleared and transported conveniently in the later period, the possibility of secondary pollution to the surrounding environment in the transportation process is prevented,the working efficiency is improved, the labor cost is saved, the practicability is high, and the device is worthy of popularization.

The invention discloses a method for producing hydrogen and recycling phosphorus through electrolysis of neutral Fenton regulated residual sludge microorganism. The method comprises the following steps: firstly, performing neutral Fenton regulation on residual sludge, then performing anaerobic digestion on the regulated residual sludge, and controlling the anaerobic digestion process of the residual sludge, so as to obtain residual sludge supernatant at an acid production stage; then adding the residual sludge supernatant into an MEC reactor subjected to microbial acclimation, applying external micro voltage to the MEC reactor, and performing MEC hydrogen production; adding a magnesium source into catholyte of the MEC reactor after MEC hydrogen production is completed, adding the residualsludge supernatant at the anaerobic digestion methane production stage into the MEC reactor, and adjusting the pH value of a cathode chamber, so as to separate out struvite precipitate. Through improvement and further optimization to the technical process design of the whole treatment method and all key technical steps, compared with the prior art, the method has the advantages that the problems of high difficulty, poor effect and high cost in residual sludge treatment are solved, and phosphorus can be recycled in a struvite mode.

The invention relates to the field of water purification, and discloses a water purifier with a function of preventing secondary pollution of a reverse osmosis membrane. The water purifier comprises a raw-water inlet pipe (101), a pure water pipe (102) and a pure-water outlet pipe (103) which are connected in sequence, and further comprises a water storage pipe (104) and a backwashing pipe (105); the pure water pipe (102), the pure-water outlet pipe (103), the water storage pipe (104) and the backwashing pipe (105) are connected through a four-way valve (12); the backwashing pipe (105) is communicated with the raw-water inlet pipe (101) and the pure water pipe (102) through a three-way valve (16); the backwashing pipe (105) is provided with a second solenoid valve (11) and a first check valve (6); a water storage tank (15) or a pressure bucket (13) is arranged at a water outlet end of the water storage pipe (104). According to the water purifier provided by the invention, a water outlet of a reverse osmosis membrane filter element is communicated with the backwashing pipe, and the reverse osmosis membrane is washed with pure water in a water storage device, so that concentrated liquid is replaced with the pure water; penetrating fluid is effectively prevented from being polluted, and secondary pollution of the reverse osmosis membrane is avoided.

The invention relates to the field of environmental protection, and specifically relates to an apparatus and method for repairing petroleum hydrocarbon polluted soil. The apparatus comprises a horizontal reaction chamber; an oxidant feeding facility, which is arranged in the upper part of the horizontal reaction chamber; an UV light source, which is arranged in the upper part of the horizontal reaction chamber; and a soil delivering facility, which is arranged on the bottom of the horizontal reaction chamber. The method comprises following steps: continuously feeding petroleum hydrocarbon polluted soil and additives into the horizontal reaction chamber by the soil delivering facility; and contacting an oxidant provided by the oxidant feeding facility with the mixture composed of the petroleum hydrocarbon polluted soil and additives and mixing under the irradiation of the UV light source. The provided method can improve the repairing efficiency, reduces the amount of added oxidant, andavoids the generation of secondary pollution caused by transition metal catalysts.

The invention provides a waste sulfuric acid recycling system and method. The waste sulfuric acid is treated by combining a membrane separation method and an oxidation treatment method, so that the removal rate of metal impurities by an NF membrane is increased, high-quality sulfuric acid which can be used as the electrolyte of the lead-acid storage battery is finally obtained, and the recycling of the sulfuric acid in the storage battery industry is realized. The system and the method are low in cost and high in efficiency, are less influenced by the external environment, and can realize theresource utilization of residual liquid and dirt in the system, avoid the generation of secondary pollution, and achieve the purpose of zero emission.

The invention discloses a preparation method of a tableware detergent, and belongs to the technical field of daily chemicals. The method comprises the following steps: sequentially weighing the following raw materials in parts by weight: 20-30 parts of modified sepiolite, 12-15 parts of alkyl polyglucoside, 8-12 parts of seconary alkane sulphonate sodium, 3-5 parts of linear alkyl benzene sulphonate, 2-4 parts of a mixed chelating agent, 3-4 parts of a dispersing agent, 2-3 parts of a solubilizer, 3-5 parts of chlorine dioxide, 2-5 parts of starch aluminium octenylsuccinate, 3-5 parts of essential oil, and 45-60 parts of base liquid; mixing modified sepiolite and alkyl polyglucoside; sequentially adding seconary alkane sulphonate sodium and inear alkyl benzene sulphonate; stirring and mixing to obtain a mixture; mixing the mixture with the base liquid; sequentially adding the dispersing agent, the chelating agent, the solubilizer, starch aluminium octenylsuccinate and the essential oil; stirring and mixing to obtain a blank; charging chlorine dioxide to the blank to obtain the tableware detergent. The tableware detergent prepared by the method is outstanding in cleaning effect.

The invention relates to the fields of vegetable fertilizers and soil improvement, and especially relates to a compound silicon fertilizer for conditioning acid soil. The fertilizer comprises, by weight part, 50-70 parts of potash feldspar, 30-50 parts of dolomite, and 0.2-1 part of a flux. The invention further discloses a preparation method of the compound silicon fertilizer. The invention provides a preparation method of an efficient compound silicon fertilizer, which is cheap in raw materials and low in production cost, and can improve crop production. Through reasonable matching of the raw materials, the fertilizer can condition the soil acidification degree and reduce heavy metal toxicity to the heavy metal.

The invention discloses a preparation method and application of a chitosan-ferrotitanium compound composite adsorbent, and belongs to the technical field of adsorbents. The preparation method specifically comprises the following steps: (1) preparing a ferrotitanium compound; (2) preparing composite material microspheres; step (1) comprises the steps of taking titanium isopropylate and ferrous sulfate heptahydrate as raw materials; adding the titanium isopropylate into an organic solvent, and stirring until a uniform state is formed; then adding the ferrous sulfate heptahydrate; adding a solution obtained by uniformly dissolving into an acetone-water mixed solution; stirring until sediment is uniform and stable; standing; after washing the sediment, drying the sediment in vacuum until the weight is constant; adding the ferrotitanium compound prepared in step (1) into a chitosan acetic acid solution; after uniformly stirring, dropwise adding a mixed solution into a sodium hydroxide solution, and washing; freeze drying, thus obtaining chitosan-ferrotitanium compound composite microspheres. According to the method disclosed by the invention, prepared microsphere adsorption particles have the characteristics of easiness for separation, high adsorption capacity and capability of being repeatedly utilized, and can applied to water treatment engineering as a novel adsorbent.

The invention relates to a river sludge treatment method, which comprises: 1, carrying out solid waste leaching toxicity identification detection on sludge; step 2, chelating and curing heavy metals in the sludge; 3, according to the weight of the chelated sludge, adding pig manure and edible fungus bag waste in proportion and stirring, and when percolate is generated, adding edible fungus bag waste; 4, adding efficient biological bacteria for stirring; step 5, after uniformly stirring, shoveling the sludge mixture into a static fermentation tank by using a forklift, and fermenting; step 6, performing static fermentation on the sludge mixture in the fermentation tank for 10-15 days; and step 7, taking out the sludge mixture from the fermentation tank, spreading the fermented sludge, carrying out rotary tillage, airing to evaporate water, and then carrying out turning and dewatering to obtain the treated sludge. The technical problems that harmful heavy metals and microorganisms in the sludge cannot be completely removed and subsequent secondary utilization of resources is not facilitated in a traditional method are solved.

The invention discloses a porous titanium dioxide film and a preparing method and belongs to the technical field of materials. The porous titanium dioxide film firmly adheres to conductive glass. According to the method, the combination of vacuum evaporation and an electrolysis method is mainly used for preparing the porous TiO2 film. The porous TiO2 film not only can serve as a photo-anode to be applied to a solar cell, but also can serve as an electrode to be applied to the electrochemistry technology and a reaction container of catalysts.

The invention provides a photocatalysis water filtering type air purifier. A photocatalysis curved cone array is adopted, liquid surface tension is ingeniously applied, and the novel principle that bubbles are easily adsorbed to a hydrophobic surface structure and a cone structure controls the conveying direction of the bubbles is used, so that the novel photocatalysis water filtering type air purifier is developed. The purifier with novel concept effectively combines photocatalysis and water filtering technologies, and has the advantages of being free of filtering nets or consumables, safe and thorough in purification, low in noise, not prone to get mouldy and the like. A filtering net in a traditional purifier is replaced, consumables needing frequent replacement are not needed, and therefore the use cost is saved. By virtue of the advantages of nanometer photocatalysis materials, organic pollutants in the air are decomposed through photocatalysis reaction, and the photocatalysis water filtering type air purifier has the characteristics of being thorough in purification, free of secondary pollution, long in service life and the like.

The invention discloses an environment-friendly fertilizer and a preparation method thereof, and belongs to the technical field of fertilizers. The environment-friendly fertilizer comprises the following raw materials in parts by weight: 50-80 parts of river bottom mud, 10-15 parts of straw, 15-25 parts of activated carbon, 20-30 parts of coal slag, 3-6 parts of earthworms, 25-35 parts of pig manure, 10-15 parts of fish bone and 0.1-0.5 part of lactic acid bacteria. According to the invention, the earthworms are added into the coal slag and the pig manure, and the ground fish bone and straw powder are added into the coal slag and the pig manure. The fish bone and the straw provide a good living environment for the earthworms, so that the growth of the earthworms is facilitated. The coal slag contains certain nutrient elements, but certain heavy metals exist in the coal slag, and heavy metals such as Cu, Zn, Cd, Ni and the like are promoted to be converted to an exchange state and a water-soluble state through the effect of the earthworms. The comprehensive effect of influence of the earthworms on the stage of the heavy metals is relatively remarkable, so that harmless use of the coal slag is realized, the waste is changed into wealth, and nutrients are provided for the growth of plants. In addition, a certain capability of fertilizer retention and water retention is achieved, and the long-time fertility-increasing effect of the fertilizer is improved.

The invention discloses a gas-solid surface reaction device and a measuring method adopting the same, aiming to solve the problem that presently a sample treated under a low-vacuum or positive-pressure condition needs to be exposed to the atmosphere before being transferred to other ultrahigh vacuum environments for follow-up analysis. According to a conventional method, the sample is subjected to low-pressure or high-pressure reaction treatment in a specific reaction vessel, then the reaction vessel is opened, and the sample is taken out and transferred to other ultrahigh vacuum analysis spectrometers; and the problem of secondary contamination of the surface of the sample caused by the atmosphere is obviously hard to avoid in the process. According to the gas-solid surface reaction device provided by the invention, a gas-solid high-pressure reaction can be performed and ultrahigh vacuum can be obtained; and in a high-pressure inflation and reaction process, on-line collection and recordation of temperature and pressure can be realized, and after reaction is finished, a cavity can stay in an ultrahigh vacuum state and the sample can be transferred in vacuum to other connected analysis equipment. Through the gas-solid surface reaction device, secondary contamination on the surface of the sample caused by the atmosphere is completely solved, and meanwhile the working efficiency is effectively improved. The gas-solid surface reaction device is reasonable in design, has a skillful concept and is of great significance on studying of gas-solid surface reaction.