83results about How to "Avoid secondary contamination" patented technology

The invention provides a broad-sense garbage collection and transportation method and device, and belongs to the technical field of urban environmental sanitation equipment. Broad-sense garbage is a general item of household garbage, construction waste and bulky waste. At present, urban environmental sanitation equipment can only realize collection and transportation of the household garbage and can not realize collection and transportation of the construction waste and the bulky waste. To solve the technical problem, the technical schemes of a tipping bucket with a bi-directional open/close cover, an uncovered tipping bucket, a crane trolley, a dump truck provided with a lifting device and a compacting device, a dump truck provided with a lifting device and an open cover and other devices are provided, and therefore not only the household garbage by also the construction waste and the bulky waste can be collected and transported by the urban environmental sanitation department.

The invention relates to a preparation method of a hot pot for instant salty and dried food. The preparation method comprises the following steps of: cleaning various salty and dried products; cutting the products into regular small pieces, and mixing the small pieces and seasoner and adding water; placing the mixture into a can, and heating; and braising and warming up for sterilization to obtain an instant hot pot. By the method, salty and dried food can be processed into a canned cooked food hot pot and sold in markets to meet the requirements of people in non-productive areas on the salty and dried food; the added values of the products are improved, the quality guarantee periods of the products are long, edible seasons are prolonged, and the products can be instantly eaten conveniently and fast when opened; the products are cooked by high-quality natural mineral water which is rich in various trace elements beneficial to human bodies, and have mellow mouthfeel and unique flavor; hot pot materials are canned and then cooked to avoid secondary contamination to cooked food caused by canning; the hot pot materials are canned, then braised until medium rare, and cooked until well finished, so that the secondary destruction to nutrients in the food can be avoided and the quality guarantee effect is better.

The invention discloses novel environment-friendly bricks and a production method thereof and belongs to the technical field of building materials. The novel environment-friendly bricks are prepared from, by weight, 10-20 parts of coal gangue powder, 5-15 parts of quick lime, 10-20 parts of building rubbish, 5-15 parts of granite tailings, 10-20 parts of coal slime and 10-20 parts of kaolin tailing powder. The novel environment-friendly bricks are high in compressive strength, good in breaking resistance and low in cost, resources are effectively saved, and secondary pollution to the environment is avoided.

The invention discloses a nano-silicon dioxide modified environment-friendly waterborne paint remover and a preparation method thereof. The nano-silicon dioxide modified environment-friendly waterborne paint remover is prepared from the following raw materials in parts by weight: 1.2-1.4 parts of nanometer montmorillonite, 1.5-2 parts of a penetrating agent T, 42-46 parts of benzyl alcohol, 11-12 parts of acetone, 10-11 parts of hydrogen peroxide, 3-3.5 parts of methylcellulose, 2-2.4 parts of urotropine, 1.3-1.5 parts of dodecylbenzenesulfonic acid, 1.6-1.9 parts of microporous starch, 2.2-2.5 parts of microcrystalline wax, 0.8-1 part of tetrabutyl titanate, a proper amount of ammonia water, a proper amount of ethyl alcohol, 50-55 parts of water, 1.2-1.5 parts of boronic acid, 0.4-0.6 part of sodium dichloro isocyanurate and 0.9-1.3 parts of nano-silicon dioxide. With using of the boronic acid and the sodium dichloro isocyanurate, the nano-silicon dioxide modified environment-friendly waterborne paint remover has the bacterium resistance and the corrosion resistance, is good in permeability and promotes peeling of a paint film; and by using the nano-silicon dioxide, peeling is formed at an interface, the peeling speed is increased, secondary pollution is prevented, and metal corrosion is retarded.

The invention relates to the technical field of mechanical equipment cleaning, and discloses an industrial detergent. The industrial detergent is characterized by comprising the following raw materials by weight percent: 10% to 18% of non-ionic surface active agent, 5% to 15% of diglycolamide oleate borate, 3% to 7% of glycerol, 3% to 10% of defoaming agent, 1% to 10% of dispersing agent, 1% to 5% of anti-staining agent, 5% to 10% of cyclodextrin, 1% to 5% of emulsifying agent, 1% to 5% of kieselguhr and 15% to 70% of deionized water. Compared with the prior art, the industrial detergent disclosed by the invention has the advantages that the stimulation of the surface active agent to skin is reduced due to the addition of the cyclodextrin, i.e., the cyclodextrin and contaminants can form stable inclusion complexes, so that the environmental contamination is reduced; oil dirt is prevented from floating on the water surface due to the addition of the anti-staining agent and the emulsifying agent, so that the secondary staining is avoided; the dirt cleaning speed is rapid, the dirt can be completely dissolved and insoluble substances cannot remain on the surface of a cleaned object in a cleaning process, so that new dirty stains are not generated; the production cost is low; toxic and harmful substances cannot be generated.

The invention which discloses a desulfurized lead-containing wastewater recycling processing method relates to the technical field of lead ore smelting. The method is characterized in that the method comprises the following steps: adding a 20-50% sodium sulfide solution with the weight required by a theoretical reaction at normal temperature according to the content of heavy metals in the wastewater, stirring to fully react, taking a quantitative amount of the obtained solution, adding the sodium sulfide solution drop by drop to inspect until no deposition appears, that is, the reaction is completed, filtering out filter residues, slowly adding the filtered solution to a theoretic amount of barium hydroxide, reacting for 20-60min under stirring, and filtering to obtain barium sulfate which can be applied to the storage battery manufacturing operation and a sodium hydroxide solution which returns to a desulfurization system. According to the method of the invention, the heavy metals of lead, copper, cadmium and the like can be removed from the desulfurized lead-containing wastewater, and the wastewater is regenerated into the sodium hydroxide solution which returns to the desulphurization operation with above barium salt, so a problem of secondary pollution of traditional technologies is fundamentally and scientifically avoided, no pollutants are discharged, and energy saving and environmental protection are realized.

The invention discloses a dyeing method of cotton type polyester staple fibers produced from PET bottom cut pieces. The dyeing method is characterized by specifically comprising the following steps: a, selecting an alkali-resisting disperse dye and grinding until the fineness reaches 2 microns, b, adopting a pretreatment dyeing one-bath-one-step process, firstly, adding regenerated polyester staple fibers to a dye jar, dissolving a pure alkali agent, an even penetrating agent GL and a chelating dispersant DF101 according to a dyeing bath ratio of 1: (5-7) and putting into the dye jar, and adding the alkali-resisting disperse dye to obtain mixed dye liquor; C, regulating the pH value to the range of 13-14, gradually increasing the temperature to the range of 128-132 DEG C and preserving heat for 1 hour; and D, performing water washing, soap boiling and water washing on the dyed fibers, thereby finishing dyeing. The dyeing method is used for solving the problem of uneven dyeing of the cotton type polyester staple fibers produced from the PET bottom cut pieces; small-batch and multi-variety production is realized, the requirements of market variety diversification are met, the process time is greatly shortened, the yield is improved, the environment can be protected, the dye-uptake can be above 90%, the color fastness is high and the usability of the products is improved.

The invention discloses a de-dusting device capable of rapidly cleaning fabric dust. The de-dusting device comprises a box body, the top of which is provided with an air blower. The bottom of the box body is provided with an induced draft fan. The bottom on one side of the box body is provided with a cloth inlet. The top on the other side of the box body is provided with a cloth outlet. A first driving roller and a second driving roller are arranged in the middle of the inside of the box body. The first driving roller and the cloth inlet are located on the same height. The second driving roller and the cloth outlet are located on the same height. The inside of the side wall, provided with the cloth inlet, of the box body is provided with a first transverse hairbrush, and a first vertical hairbrush located below the first transverse hairbrush. The inside of the side wall, provided with the cloth outlet, of the box body is provided with a second transverse hairbrush and a second vertical hairbrush located below the second transverse hairbrush. The widths of the first vertical hairbrush and the second vertical hairbrush are the same as the fabric width so that surface dust of the fabric can be effectively cleaned and dust is prevented from adhering to fabric or dispersing to the environment.

The invention discloses water conservancy construction rapid desilting equipment. The rapid desilting equipment comprises a ship body, wherein a silt storage tank is arranged on the ship body, and thesilt storage tank is internally provided with a silt-water separator; and the rapid desilting equipment further comprises a silt pumping device, a lifting device, a box body and a sludge crushing device, wherein the silt pumping device is arranged on the ship body and used for pumping silt, the lifting device is arranged at the bottom of the ship body, the box body arranged below the ship body, the top of the box body is fixedly connected with the movable end of the lifting device, a silt inlet is formed in one side wall of the box body, and the sludge crushing device is arranged on the box body. According to the rapid desilting equipment, the sludge crushing device is high in sludge crushing efficiency, sludge can be selected to be crushed horizontally or vertically through a turnover device, sludge crushing is more thorough and efficient during horizontal crushing, sludge of different thicknesses can be crushed at the same time during vertical crushing, the crushing area is increased, sludge diffusion can be prevented through the box body, and secondary pollution of the scattered sludge to a river is prevented.

The invention provides a dustproof device for a water outlet of a water dispenser. The dustproof device comprises a dustproof shell, a dustproof slip sheet and a dustproof slip sheet control system, wherein the dustproof slip sheet control system consists of an iron core, a spring and a controller; the controller comprises an optical coupler, a singlechip, a driving chip, a relay and an electromagnetic solenoid; one end of the dustproof slip sheet is directly connected with the iron core, the other end of the dustproof slip sheet is connected with the dustproof shell through the spring, and the iron core is connected with the electromagnetic solenoid; and the controller is controlled by a water dispenser switch. The dustproof device can effectively prevent dust and bacteria in the air from being adsorbed on the water outlet and ensure cleanness and sanitation of the water outlet; and because the dustproof slip sheet in the dustproof device can automatically slip according to on and off of the water dispenser switch, the dustproof device is more convenient and sanitary in practical application.

The invention relates to a mask spinning cleaning machine. The machine comprises a mask spinning cleaning machine control circuit, a driving device, a mask clamping device, an outlet valve, a sprinkler head, a gas outlet valve, a jet head, a heating device and a pipeline, wherein the mask spinning cleaning machine control circuit is electrically connected with the driving device, the outlet valve, the gas outlet valve and the heating device and is used for controlling the driving device to drive the mask clamping device to rotate around a rotating shaft, controlling on/off of the outlet valve and the gas outlet valve and controlling the heating device to carry out heating; the outlet valve is connected with the sprinkler head by a water pipe to spray deionized water onto a mask; the gas outlet valve is connected with the heating device and the jet head by a gas pipe in sequence; and the jet head is used for jetting the heated gas onto the mask. The invention also relates to a cleaning method of the mask. The machine and the cleaning method have the following beneficial effects: as the surface of the mask is dried while being spun during cleaning, the mask cleaning efficiency is much higher than that of the traditional technology and watermarks can no longer appear on the surface of the mask; and the mask is directly put into a mask box after being cleaned, thus avoiding secondary contamination.

The invention provides a nuclear biochemical pollution box group decontamination system. The system comprises a pre-decontamination box group, a drug decontamination box group, a clear water decontamination box group and an equipment and accessory box group; the appearance sizes of the four box groups are the same; the pre-decontamination box group internally comprises a pre-decontamination channel, an external decontamination pump and two spray guns with different lengths; the drug decontamination box group internally comprises a drug decontamination module and a netty wall board A; the clear water decontamination box group comprises a clear water decontamination module and a netty wall board B; the equipment and accessory box group internally comprises a power and control module; and the power and control module comprises a clear water pump, a drug pump and a control module. The decontamination system has three different combining forms for respectively aiming at different pollution conditions and different decontaminated objects in the use field, is flexible to combine and has a strong field adaptability; and the decontamination process adopts the streamlined operation, so that the nuclear biochemical pollution box group decontamination system is complete to decontaminate and has a high efficiency.

The invention discloses a high-strength environmental protection brick and a preparation method thereof and belongs to the technical field of building materials. The raw materials of the high-strengthenvironmental protection brick comprises, by weight, 5-15 parts of fly ash, 15-25 parts of shale mine, 4-16 parts of attapulgite, 5-15 parts of coal gangue, 5-15 parts of perlite and 5-15 parts of kaolin tailings powder. The high-strength environmental protection brick has the advantages of strong in compressive strength, good in flex resistance, low in cost, effective in saving resources, and avoidable in second pollution to the environment.

The invention provides a novel method for modifying a GaAs material surface. The method may stably and reliably reduce defects on the GaAs material surface, decreases a possibility of surface oxidation, and simplifies processing steps. The method comprises steps of: (1) placing a GaAs material to be processed in a vacuum chamber, adding inert gas into the vacuum chamber after the vacuum chamber is made vacuum , and forming stable plasma under the effect of a radiofrequency source to perform physical cleaning; (2) making the vacuum chamber vacuum, adding corrosive gas into the vacuum chamber, and forming stable plasma under the effect of the radiofrequency source, and enabling the plasma to react with an oxide layer on the surface of the material so as to chemically clean the surface of the GaAs material for removing the original oxide layer and impurities on the surface of the GaAs material and forming a Ga-enriched material surface; and (3) making the vacuum chamber vacuum, adding nitrogen into the chamber vacuum, and forming the stable plasma under the effect of the radiofrequency source in order to enable the plasma to react with Ga-enriched material surface to generate a GaN material passivation layer.

The invention discloses an energy-saving environment-friendly building brick and a production method thereof, and belongs to the technical field of building materials. The energy-saving environment-friendly building brick comprises the following raw materials in parts by weight: 10 to 20 parts of clay, 5 to 15 parts of river sand, 4 to 10 parts of construction waste, 10 to 20 parts of colliery powder, 5 to 15 parts of andalusite powder, 5 to 15 parts of steel slag, 10 to 20 parts of zirconium oxide powder, and 10 to 20 parts of stone tailings. The energy-saving environment-friendly building brick is high in compressive strength, good in breaking resistance and low in cost, effectively saves resources, and avoids secondary pollution to the environment.

The invention discloses an environment-friendly energy-saving brick and a production method thereof, and belongs to the technical field of a building material. The environment-friendly energy-saving brick is prepared from the following raw materials in parts by weight: 10 to 20 parts of gangue powder, 8 to 20 parts of river sand, 10 to 20 parts of building rubbish, 10 to 18 parts of zirconium oxide powder, 10 to 20 parts of andalusite powder, 8 to 18 parts of kaolin tailing powder and 8 to 16 parts of attapulgite. The environment-friendly energy-saving brick has the advantages that the compressive strength is high; the fracture resistance is high; the cost is low; resources are effectively saved; the secondary pollution on environment is avoided.

The invention discloses an environment-friendly brick and a production method thereof, and belongs to the technical field of building materials. The environment-friendly brick comprises, by weight, 6-12 parts of slags, 4-10 parts of river sand, 3-9 parts of building rubbish, 5-15 parts of coal gangue powder, 4-10 parts of andalusite powder, 5-9 parts of granite tailings, 8-16 parts of zirconium oxide powder and 3-9 parts of kaolin tailing powder. The environment-friendly brick has high compressive strength, high breaking resistance and low cost, resources are saved effectively, and secondary pollution to the environment is avoided.

The invention relates to the technical field related to textile fabric production, and discloses a desizing device for textile fabric production. The desizing device comprises a washing tank; reversing wheels are movably mounted on two sides of the top of the washing tank respectively; a cleaning brush is fixedly mounted at the bottom of an inner cavity of the washing tank; a partition plate is fixedly mounted in the middle of the inner wall of the washing tank; and a washing cavity is formed in the inner wall of the washing tank. According to the invention, the partition plate is arranged in the washing tank, so that a large amount of slurry floats to one side in the washing cavity in a fabric treatment process; meanwhile, movable magnetic blocks are arranged in a cleaning wheel, the movable magnetic blocks attract each other through rotation of the cleaning wheel, and a fabric is blown by airflow, so that cleaning is achieved; and the airflow in liquid is upward and acts on the part near the fabric, and when the fabric leaves from the liquid, slurry blocks are pushed away through the airflow, so that the phenomenon of secondary contamination after cleaning is avoided, and finally the purpose of avoiding secondary slurry contamination is achieved.