38results about How to "Improve environmental standards" patented technology

The rain water recovering and utilizing apparatus for factory area includes production waste water and rain water collecting pipeline connected through regulating water pond to the rain water draining pipeline, deposit tank connected to the rain water draining pipeline, rain water backing and lifting pump inside the deposit tank, rain water backing pipeline with one end connected to the rain water backing and lifting pump and the other end connected to the regulating water pond, the lifting pump in the regulating water pond and connected to the waste water treating unit, and back water pump in the water backing pond and connected to the back water pipeline. The present invention is especially suitable for where water resource is lacked and there is relatively high environment protection requirement.

The invention relates to an LNG (liquefied natural gas) fuel supply method and device utilizing BOG (boil-off gas) preferentially and solves problems that the reliability is poor, equipment is easily frozen and cannot work during starting and the fuel utilization rate is low in existing LNG gas fuel supply. According to the technical scheme, the LNG fuel supply device comprises an LNG storage tank, wherein a liquid outlet in the bottom of the LNG storage tank is connected with a gasifier through a pressurization pipe; the gasifier comprises a fuel heat exchanger and a self-pressurization heat exchanger; the pressurization pipe is connected with a gas inlet in the top of the LNG storage tank through the self-pressurization heat exchanger of the gasifier; a gas outlet in the top of the LNG storage tank is connected with gas equipment through a gas supply pipe and the fuel heat exchanger. The LNG fuel supply device is simple in structure, simple and convenient to operate, small in volume, high in reliability, good in safety, low in equipment investment and running cost, high in fuel utilization rate and environment-friendly.

The invention relates to a salmon automatic processing line and automatic processing method and belongs to the field of fish processing lines; fish processing steps are subdivided, workers at each position only perform one fixing operation, platforms are connected through a conveyer belt, a manual conveying process is avoided, time differences for handling each step are created for the workers at each position, each station is enabled for continuous production so that production efficiency is greatly improved, the workers at each station repeat only the single work so that working speed is effectively increased, each of a gill-binding conveyer belt, a bloodletting apparatus, a dirt suction platform, a flushing platform, a ripping platform and a hemal gland scraping platform is provided with a dirt collection system so that dirt is collected centrally at its place of origin and is finally gathered to a fully-closed sewage treatment system for central treatment, and therefore, operations at each station are green and environmental standards for production are greatly increased.

The present invention discloses an ultraviolet light curing offset printing fluorescent anti-counterfeiting ink, which comprises, by weight, 40-60% of a polyester acrylate resin, 5-15% of a propoxylate neopentylene glycol diacrylate ester monomer, 15-25% of a luorescent anti-counterfeiting pigment, 5-15% of a filler, 1-2% of an auxiliary agent, and 8-12% of a photoinitiator. According to the present invention, when the prepared single-component ultraviolet light curing offset printing fluorescent anti-counterfeiting ink is used, no solvent exists, and no toxic gas is discharged, such that the advantages of environmental protection and no pollution are provided; and after the curing, different color patterns are displayed along with the irradiation with different anti-counterfeiting lamps, the coloring is good, the mobility is good, and the requirements of the anti-counterfeiting ink can be met.

The invention discloses a method for treating waste water and waste liquor in a titanium tetrachloride industrial production process, which comprises a chlorination-stage waste water treatment method, a refining-stage rectification waste liquor treatment method and a refining-stage copper-vanadium containing waste acid solution treatment method, and is characterized in that the chlorination-stagewaste water treatment method is a gasification, liquidation and solidification treatment method for chlorination-stage waste water; the refining-stage rectification waste liquor treatment method is alow boiling point separating and recycling treatment method for refining-stage rectification waste liquor; and refining-stage copper-vanadium containing waste acid solution treatment method is a copper and vanadium recycling treatment method for refining-stage copper-vanadium containing a waste acid solution. The invention solves the industry problem of completely treating the waste water and thewaste liquor which are produced in the whole titanium tetrachloride production process, and has obvious effects of improving environmental protection standards, lessening environmental pollution, improving production operating environment, turning waste materials into things of value and finally reaching standard emission.

The invention discloses a method for dissolving red mud. The method comprises the following specific steps of: mixing Bayer process red mud with white lime in the mass ratio of 1:(0.3-0.9); stirring at the temperature of 80-140 DEG C for reacting for 1-15 hours for calcifying, transforming and dealkalizing; mixing calcified, deformed and dealkalized Bayer process red mud with clear water or a low-concentration sodium aluminate solution in an enclosed container; introducing CO2 into the container to obtain calcified slag containing calcium silicate, calcium carbonate and aluminum hydroxide serving as main components; and extracting aluminum hydroxide from the calcified slag by using a sodium hydroxide solution or an aluminum hydroxide solution. In the method disclosed by the invention, the structure and composition of red mud are changed by adopting calcification transformation and pressurizing calcification transformation methods, so that dealkalization and extraction of aluminum can be realized; and iron is extracted properly, so that the structure and the composition of red mud can meet the requirements of cement production, and the aim of dissolving red mud on a large scale at low cost is fulfilled.

The invention relates to the field of aluminiferous raw material utilization, in particular to a calcification-carbonization method for treating a low-middle grade aluminiferous raw material and aluminum cycle. The calcification-carbonization method comprises the following steps: carrying out calcification transformation dissolving reaction of low-middle grade bauxite or other aluminiferous materials in a dissolving liquid of 100g / L to 280g / L to obtain calcification residues; carrying out carbonization reaction on the calcification residues to obtain carbonization residues; dissolving out the aluminiferous phase of the calcification transformation residues by adopting a sodium hydroxide solution of 40g / L to 120g / L; adding calcic materials into the dissolved liquid obtained in the dissolving process of the phase to obtain a calcium aluminate precipitate; in addition, alkali liquor is returned to the dissolving process and can be recycled after filtration, and the calcium aluminate precipitate is returned to the calcification transformation dissolving process as an ingredient of calcium source or replaces lime in a production process adopting Bayer process. According to the invention, obtained tailings can be used in the cement industry, so that the recycling efficiency of alumina in the aluminiferous raw material is improved, the harmless utilization of the tailings is realized and a large quantity of CO2 can be absorbed during the production process at the same time. Therefore, the calcification-carbonization method is an environment-friendly method for alumina production.

A composite floor, comprising a ceramic tile substrate, the upper surface of the ceramic tile substrate is bonded with a wooden panel layer by strong glue, and there are tenons and / or tenons extending along the length direction of its side surface around the ceramic tile substrate. The present invention also provides a method for producing the novel composite floor, which comprises the following steps in sequence: applying adhesive to the wooden boards and tiles, bonding the wooden boards to the tiles, performing balanced hot pressing on the bonded boards, using The marble opening machine is used to open the edge, mill the mortise and tenon on the side of the tile, refine the corner, and paint the panel. This new type of composite floor has strong waterproof, moisture-proof, deformation-proof, and heat-preservation performances, and has low noise, low cost, and convenient construction. It is especially suitable for the first floor and has very good social and economic benefits.

The invention discloses a completely recoverable barrier PE (polyethylene) membrane material, which comprises three or more than five layers of mutually overlapped membrane layer structures, the base material of each membrane layer is a PE material, and the membrane layer structure at least comprises one HDPE (high-density polyethylene) functional layer taking a high-density polyethylene polymer material as a base material. The preparation method of the membrane material comprises the following steps: feeding, heating and melting, co-extruding, blowing, cooling and shaping, drawing, rolling and the like. In the film blowing cooling shaping stage, all film layers are obtained through one-time film blowing forming, and a film material stretching and extending operation is additionally carried out in the traction process; the number of the extruders is more than five, and the number of the extruders is correspondingly consistent with the number of layers of a membrane material to be prepared; the number of the runners in the die head of the film blowing machine is more than five, and the number of the runners is consistent with the number of layers of a film material to be prepared. The membrane material can be applied to packaging materials or buffer bag materials for various industries. The product provided by the invention has the advantages of environmental protection, good mechanical property, good barrier property, low cost, excellent comprehensive performance and the like.