41results about How to "Secondary pollution meets" patented technology

The invention discloses a preparation method of corn stalk core regenerated cellulose immobilized nano-CuS / TiO2 composite aerogel. The preparation method comprises the following steps: shearing air-dried corn stalks for later use, carrying out cellulose extraction on a medullary core by using a malonic acid / hydrogen peroxide method, and dissolving the freeze-dried cellulose in a DMAc / LiCl system;dropwise adding an aqueous CuCl2 and Na2S solution into a TiO2 suspension, reacting, centrifuging, cleaning and drying to obtain CuS / TiO2 particle powder; and dispersing the CuS / TiO2 particle powder into DMAc, then adding the obtained dispersion into a glycerin-containing cellulose dissolved solution, uniformly mixing, dropwise adding blended cellulose into a template, regenerating in water, washing and freeze-drying to obtain the CuS / TiO2 loaded regenerated cellulose composite aerogel. The composite aerogel prepared by the method has the advantages of light weight, rich pore channels, reproducibility, wide photocatalytic response interval, high efficiency of catalytically degrading dye organic matters and the like, and has a good application prospect in the aspect of industrial dye wastewater degradation.

The invention relates to a device for removing heavy metals and polycyclic aromatic hydrocarbons in bottom sediment of river channels and a method thereof and belongs to the field of river-channel pollution treatment in environmental protection. The device comprises an electrolysis device, a biological fuel cell and a galvanometer, wherein the electrolysis device comprises a cathode area, a bottom-sediment area and an anode area; the negative electrode of the biological fuel cell is arranged at the outer side of a round drum, the positive electrode of the biological fuel cell is arranged at the inner side of the round drum, and a compost layer is arranged between the negative electrode and the positive electrode; a cathode rod is arranged in the cathode area, the top part of the cathode rod is electrically connected with the positive electrode, the negative electrode is connected with one end of the galvanometer, and the other end of the galvanometer is electrically connected with a positive rod; a substance exchange film is arranged between the anode area and the bottom-sediment area, a substance exchange film is also arranged between the bottom-sediment area and the cathode area, the top part of a cathode sampling area is provided with a cathode sampling port, the top part of a middle sampling area is provided with a middle sampling port, and the top part of an anode sampling area is provided with an anode sampling port. The device and the method have the advantages that the energy is saved and simultaneously the purpose of using wastes to treat wastes is achieved.

The invention discloses a quick-drying sports towel. The quick-drying sports towel is composed of an antibacterial and quick-drying layer and a moisture-absorbing and perspiration-wicking layer that are laminated in sequence; the antibacterial and quick-drying layer is a mixture of modified antibacterial natural fibers and hydrophobic bamboo fibers. The moisture-absorbing and sweat-wicking layer is prepared by the following preparation method: S1. Weigh the following raw materials in parts by weight: 45-62 parts of Coolmax fiber, 32-59 parts of chitin fiber, and 2-5 parts of spandex; S2, the Coolmax fiber, chitin fiber and spandex weighed in the step S1 are weaved to obtain a fabric layer; S3, the fabric layer obtained in the step S2 is put into a hydrophilic finishing solution for dipping for 20 to 30min, and microwaved for 4 minutes after dehydration. ~6min, drying, and then the moisture-absorbing and perspiration-wicking layer is obtained. The invention has excellent moisture absorption and perspiration wicking effect, antibacterial property and quick-drying property, keeps the towel cool all the time, greatly improves the comfort of the fabric, feels soft, is green and environmentally friendly, has biodegradability, and is durable.

The invention provides a preparation method of a composite nano carbon material and a composite nano material. The preparation method comprises the following steps: preparing a catalyst; mixing the raw materials with a catalyst to form a material; and carrying out n-section microwave treatment on the prepared material. According to the preparation method of the composite nano carbon material and the composite nano material provided by the invention, the carbon black is adopted as a substrate, in-situ growth of the carbon nano tube is realized through the supported metal, the composite nano carbon material of the carbon nano tube and the carbon black is finally prepared, and the dispersity of the carbon nano tube powder is effectively improved; according to the present invention, the agglomeration phenomenon during the carbon nano-tube preparation process is improved, the good point-line combined conductive network is constructed, the multi-section gradient power microwave treatment is adopted, and each section of the microwave treatment can well join and cooperate, such that the yield, the purity and the quality of the carbon nano-tubes are significantly improved, and the carbon nano-tubes are effectively dispersed in the carbon black particles.

The invention discloses an impact-resistant polypropylene foaming material with high-melt strength. According to the invention, impact-resistant polypropylene with high-melt strength taken as matrix resin is obtained by foaming, The impact-resistant polypropylene with high-melt strength comprises a propylene homopolymer component and an ethylene / 1-butylene copolymer component; wherein the propylene homopolymer component comprises at least a first propylene homopolymer and a second propylene homopolymer; the ethylene content in the ethylene / 1-butylene copolymer is 20-45 wt%; the weight ratio of the ethylene / 1-butylene copolymer component to the propylene homopolymer component is 11-80: 100; and the ratio of room-temperature trichlorobenzene soluble Mw of the material to room-temperature trichlorobenzene insoluble Mw of the material is greater than 0.5 and is smaller than or equal to 1. The invention also relates to a preparation method of the foaming material. The foaming material has the characteristics of good shock resistance at high and low temperature, high physical heat resistance, high closed porosity, good insulation and sound insulation performances, controllable foaming multiplying power and foam structure, and easy recovery and utilization.

A filtering material prepared from sludge for treating water features that the mass ratio of the clay and adhesive to sludge is respectively 300-400% and 10-20%. Its preparing process includes proportionally mixing all raw materials and sintering at 900-1200 deg.C for 15-35 min.

The invention relates to an organic sulfur conversion catalyst for liquefied gas and belongs to the technical field of liquefied gas refining. The organic sulfur conversion catalyst for liquefied gas disclosed by the invention comprises the following components in percentage by weight: 10-20 percent of Ni, 5-10 percent of Na2O and the balance of a carrier, wherein the carrier refers to gamma-Al2O3. According to the catalyst disclosed by the invention, the organic sulfur conversion rate in the liquefied gas is high, namely the thiol conversion rate is more than or equal to 95 percent, the carbonyl sulfide conversion rate is more than or equal to 98 percent, and the carbon disulfide conversion rate is more than or equal to 90 percent.

The invention belongs to the technical fields of chemical engineering production, civil production and living, and relates to a defoaming method adopting porous ceramics. The method is characterized in that: the porous ceramics which are subjected to hydrophobic treatment and have an aperture smaller than the diameter of foams are adopted; the placement mode is selected according to the orientation for generating the foams and the flowing direction of fluid, so that the foams are torn and broken in the process of flowing and running through the porous ceramics; and finally the defoaming is realized. The method adopts the defoaming mode, can fully realize that the foams are torn and broken in the process of running through the porous ceramics, and finally realizes defoaming. The technologyhas universal applicability in the fields with defoaming requirement in production and living, is safe and environment-friendly, and has low cost and convenient and simple operation.