32results about How to "Has the ability to restore" patented technology

The invention discloses a method and system for advanced treatment of leachate. The method comprises the following steps: passing the leachate to be treated into an electrolytic cell (100) for electrochemical treatment; Liquid separation, discharge the flocculated sediment / suspended matter; the effluent after solid-liquid separation is passed into the wetland purification device (200), and the leachate pollutants are degraded or removed through the laid packing layer, and finally the water is effluent; preferably , the method also includes the step of removing volatile organic compounds and malodorous gas in the leachate. In the method and system of the present invention, the pollutant content in the leachate can be effectively reduced or removed through electro-oxidation, electro-flocculation, and wetland advanced treatment, and even the air pollution caused by the leachate can be eliminated through the deodorization system, and the effective treatment of the leachate is realized. Management and disposal to ensure that leachate does not affect human health during human activities.

The invention provides a CO-SCR denitration catalyst and a preparation method and application thereof.The preparation method comprises the steps that a precipitant is added into a solution of mixed metal salt to obtain precipitate, ball-milling treatment is conducted on the precipitate to obtain powder, and the powder is heated to 450-850 DEG C to be calcined; wherein the mixed metal salt is a manganese salt and other metal salts, and the other metal salts are one or more of a copper salt, an iron salt, a cerium salt, a cobalt salt and a nickel salt. The catalyst provided by the invention hasgood water resistance, effectively solves the problem of CO + O2 competition in the CO-SCR catalytic process, and overcomes the defect of low catalytic NOx removal efficiency of an existing material under the double interference conditions of water vapor and oxygen.

The invention provides an alginate fiber functional dressing, application of the alginate fiber functional dressing and an alginate fiber functional dressing plaster and relates to the field of medical materials. The alginate fiber functional dressing is prepared from the flowing raw materials in percentage by mass, 0.5 to 2 percent of oligocarrageenan, 1.5 to 3 percent of alginate-derived oligosaccharide, 0.5 to 1.5 percent of algae polyphenol, 0.5 to 2.5 percent of procyanidine, 0.05 to 0.2 percent of sodium chloride, 0.5 to 1.5 percent of Carbomer, 0.01 to 0.1 percent of PH conditioning agent, 0.5 to 2 percent of skin adhesive, 0.01 to 0.2 percent of skin-moistening moisturizer, and the balance of water for injection. The alginate fiber functional dressing plaster comprises a dressing surface layer onto which the alginate fiber functional dressing is absorbed. The alginate fiber functional dressing can be used to effectively repair and heal a skin injury, and the wound healing time is shortened. Furthermore, the invention provides the application of the alginate fiber functional dressing to repairing and healing the skin injury.

The invention belongs to the technical field of natural product preparation and especially relates to a method for adsorbing and recovering a precious metal palladium by a persimmon tannin-containing metal adsorbent. The method can be widely used for adsorbing and recovering a palladium element in a secondary resource and has the advantages of low cost, large adsorption capacity, good environmental benefits and convenient operation. The method is characterized by comprising the following steps of 1, weighing a certain amount of a persimmon tannin-containing adsorbent, and adding the weighed persimmon tannin-containing adsorbent into a triangular flask, 2, adding a palladium ion-containing solution having a pH value in an appropriate range into the triangular flask, wherein the volume of the used palladium ion-containing solution is less than or equal to half of the volume of the triangular flask, 3, sealing an opening of the triangular flask by a sealing film, putting the sealed triangular flask into a shaking table, and carrying out shaking-table shaking adsorption at a shaking-table rotation rate of 100 to 200rpm at a temperature of 25 to 50 DEG C for 12 to 24h or carrying out chromatographic column adsorption at a chromatographic column mobile phase flow rate of 6 to 10mL / h for 12 to 24h, and 4, carrying out filtration so that the palladium ions in the palladium ion-containing solution are adsorbed by the persimmon tannin-containing adsorbent. The method also can be used for adsorbing and recovering a precious metal palladium by a chromatographic column.