4results about How to "Good decolorization" patented technology

The present application relates to the field of microbial technology and wastewater treatment, and specifically discloses a Kodamaea ohmeri strain with azo dye degradation function and its application. The strain was preserved in the China General Microbiological Culture Collection Center on September 30, 2022, with the preservation number of CGMCC No. 25860. The strain is isolated from the soil of Dongzhaigang Mangrove Nature Reserve in Hainan, and has decolorization and degradation effects on azo dyes such as reactive black 5, reactive brilliant red K-2G, reactive brilliant red X-3B, and methyl orange. The strain can adapt to changes in a relatively wide range of environmental factors such as salinity, pH, and temperature, and has a certain tolerance to the concentration of representative disazo dye reactive black 5. This provides a possible source of yeast strains for the biodegradation of azo dyes, and has good theoretical research value and broad application prospects in the field.

The invention relates to the technical field of fabric recycling and reusing, in particular to a process for degrading colored waste PET fabric and recycling BHET, which comprises the following steps: S1, mixing a composite catalyst, the colored waste PET fabric and ethylene glycol, adding into a reaction kettle, heating to 150-165 DEG C, controlling the pressure in the kettle to 0-0.2 MPa, carrying out degradation reaction for 2-6 hours, and filtering to remove insoluble impurities after the degradation reaction is finished, so as to obtain a mixed solution; an alcoholysis solution is obtained; s2, decolorizing the alcoholysis solution obtained in the step S1 through a multi-stage resin tank to obtain a mixture containing ethylene glycol and a product; and S3, mixing the mixture obtained in the step S2 with deionized water, heating to 95-100 DEG C, cooling to 70-80 DEG C after the mixture is completely dissolved, continuously stirring for 1-3 hours, carrying out hot filtration to obtain filtrate A and a solid A, continuously cooling the filtrate A to-10 to-5 DEG C, stirring for 8-12 hours, filtering to obtain filtrate B and a solid B, and drying the solid B to obtain the BHET. The process disclosed by the invention is relatively good in decolorization efficiency on the colored waste PET and high in BHET yield, and meanwhile, the solvent can be efficiently recycled, so that resource waste is reduced.

The application relates to a shooting jacket weaving process and relates to the technical field of textiles, and comprises the following steps: step S1, putting warp yarn raw materials on a warp beam and performing warping through a warping machine; step S2, passing the prepared warp beam through manual or equipment to perform healding; step S3, installing weft yarn on a water jet device; step S4, performing weaving on the warp yarn and the weft yarn through a water jet loom; when step S4 does not perform water jetting, the height position of the nozzle is a standby position higher than a working position, when water jetting is started, the nozzle is controlled to move downward to a working position of weft insertion height, and when water jetting is ended, the nozzle is moved upward to the standby position. Through upward deviation of the nozzle in the height direction, downward deviation of the front end and the tail end of water jet flow is compensated, so that the contact of the front end and the tail end of water jet flow on the warp yarn is reduced, the phenomenon of broken spandex of the warp yarn in the weft insertion process is reduced, the wetting amount of the warp yarn is reduced, the fabric is more easily dried in the later period, and the problems of decoloration and quality reduction of the warp yarn are also improved.

The invention relates to a regenerated DMT decoloration recovery method and system, and the method comprises the following steps: a first purification tank, a second purification tank and a third purification tank are sequentially connected in series; dimethyl phthalate to be recycled is added into a first purification tank, a second purification tank and a third purification tank; monitoring the real-time temperatures of the dimethyl phthalate in the first purification tank, the second purification tank and the third purification tank, and heating the dimethyl phthalate in the first purification tank, the second purification tank and the third purification tank when the real-time temperatures of the dimethyl phthalate in the first purification tank, the second purification tank and the third purification tank are lower than a first preset value; compared with the prior art, the method has the advantages that the material flow direction is flexibly controlled according to the dimethyl phthalate purification degree; when the purifying agent of any one purification tank is replaced, normal work of the other two purification tanks is not affected, continuous decoloration can be achieved, efficiency can be improved, and dimethyl phthalate can be prevented from being converted into a solid state.