31results about How to "Guaranteed degradation" patented technology

The invention relates to an intelligent control method and system for a microbial decomposition process of organic matters. The invention aims to provide the intelligent control method and the intelligent control system for the microbial decomposition process of the organic matters; the temperature, humidity and weight changes of a material during microbial decomposition can be fully utilized, the temperature, humidity and oxygen supply quantity in the decomposition process can be intelligently controlled, and the decomposition efficiency of the organic matters is improved. According to the method, through acquisition of the temperature data, weight data and humidity data in the process of microbial decomposition of the organic matters, and with combination of predetermined ideal state temperature-time change data, ideal state humidity-time change data and ideal state decomposition rate-time change data of microbial flora in the organic matter decomposition process, the temperature, humidity, oxygen supply and decomposition rate in the organic matter decomposition process are adjusted.

The antibiotic silver-carrying modified artificial coral bone consists of modified artificial coral bone with controllable degradation speed as carrier and adsorbed silver ion particle. The modified artificial coral bone consists of calcium carbonate in 30-70 wt% and hydroxyapatite. The preparation process of the antibiotic silver-carrying modified artificial coral bone includes the following steps: 1. preparing modified artificial coral bone; 2. soaking the artificial coral bone in silver nitrate solution, heliophobic vacuum low temperature freeze drying, adding sodium chloride solution to form silver chloride precipitate on the surface of the artificial bone and heliophobic vacuum low temperature freeze drying; and 3. distilled water dialysis to prepare antibiotic silver-carrying modified artificial coral bone.

The invention discloses a dimethylamine waste gas treatment device and process in synthetic leather industry. The dimethylamine waste gas treatment device comprises a primary capture tower, a secondary capture tower, a dry filter, a photoelectric integral purifier and a nanometer absorption tower, wherein an air outlet of the primary capture tower is connected with an air inlet of the secondary capture tower through a pipeline; an air outlet of the secondary capture tower is connected with an air inlet of the dry filter through a pipeline; an air outlet of the dry filter is connected with an air inlet of the photoelectric integral purifier; an air outlet of the photoelectric integral purifier is connected with an air inlet of the nanometer absorption tower through a pipeline. A discharginghigh-voltage electrode is arranged in a plasma reaction section; the discharging high-voltage electrode is of a stainless steel mace structure. Compared with the prior art with the defects that the pretreatment efficiency is low, so that spark discharge is generated in the plasma discharging process, and meanwhile, the oil mist influences the discharging process efficiency, the dimethylamine waste gas treatment device and process have the advantages that after the two-stage capture towers are added, the plasma discharging efficiency is improved; sufficient high-energy active substances are generated; further, the dimethylamine degradation is ensured.

The invention discloses a two-stage catalyst for catalytic degradation of chlorine-containing volatile organic chemicals (VOCs) as well as a preparation method and application of the two-stage catalyst. The two-stage catalyst is prepared from a catalyst A, a catalyst B and a barrier medium, wherein the catalyst A and the catalyst B are set in two stages, and the two stages of catalysts are isolated from each other by means of the barrier medium; the active components of the catalyst A are at least one of compounds of Ce, Cr, V, Fe and Ni, and a carrier of the catalyst A is an acidic oxide; theactive components of the catalyst B are least one of compounds of Cu, and a carrier of the catalyst B is CeO2; the barrier medium is at least one of SiO2, Al2O3, quartz sand, quartz wool and glass fibers. The two-stage catalyst can well solve the problems of deep oxidation and catalyst chlorine poisoning.

The invention provides a preparation method of a fermented protein feed and the fermented protein feed, and belongs to the technical field of biological fermented feeds. The preparation method comprises the following steps: 1) mixing a protein raw material with water, Tween 80 and a peroxyacetic acid solution to obtain a mixed material; 2) inoculating the mixed material obtained in the step 1) with aspergillus oryzae, and performing solid-state aerobic fermentation to obtain a fermented material; and 3) mixing the fermented material obtained in the step 2) with an enterococcus faecium culturesolution and water, and performing anaerobic fermentation and enzymolysis to obtain the fermented protein feed. Experimental results show that the preparation method of the fermented protein feed hasthe effects of reducing the contents of toxic, harmful and anti-nutritional ingredients in protein raw materials, increasing the content of acid-soluble protein, increasing the solubility of protein,improving and regulating amino acid balance and improving the palatability of the feed, so that the nutritional requirements for production of complete formula feeds or breeding of animals can be better met.

The invention discloses a domestic sewage filter device, which comprises two parts of a separation device and a filtering device; the separation device is a cylinder, an upper side face of the cylinder is provided with a water inlet, a support column is arranged in the middle of the cylinder, the support column is provided with movable separation disintegrators, a lower side face of the cylinder is provided with a water outlet; the filtering device is a cylinder, the lower side face of the cylinder is provided with a water inlet, the water inlet of the cylinder of the filtering device is connected with the water outlet of the cylinder of the separation device, an upper side face of the cylinder of the separation device is provided with a water outlet, multi layers of filter materials are arranged from bottom to top in the cylinder of the separation device, the lower filter material is arranged on a filter plate, the filter plate is supported by a column or other substances, and an exhaust pipe is arranged in the middle of the filter materials. The domestic sewage filter device adopts the technical scheme, compared with the prior art, the domestic sewage filter device has the advantages of full sewage degradation, fast purification, simple structure, and up-to-standard sewage discharge.

The invention discloses a production process of an environment-friendly degradable plastic film. The production process of the plastic film comprises the following steps of 1, preparing and screening raw materials such as polyethylene plastic particles, polylactic acid plastic particles and starch plastic particles, 2, melting and mixing the raw materials, 3, extruding the raw materials mixed in the step 2 through a casting machine, 4, cooling the film extruded in the step 3, 5, flattening the cooled film through a flattening device, 6, spraying, washing and drying the flattened film, and 7, slitting and rolling the dried film. According to the production process of the environment-friendly degradable plastic film, the production efficiency can be guaranteed, full mixing of raw materials is guaranteed, and what can be guaranteed is that the plastic film is rapidly and fully degraded.

The invention provides an environmentally-friendly degradable plastic and a preparation method thereof, and relates to the technical field of plastic processing. The environmentally-friendly degradable plastic is prepared from, by weight, 40-50 parts of polylactide, 12-14 parts of polybutylene succinate, 4-8 parts of polyvinyl chloride, 4-10 parts of plant fibers, 30-40 parts of grafted starch, 1-3 parts of calcium oxide, 1-3 parts of oligosaccharides, 1-1.6 parts of nano-silica, 1-2 parts of polyaluminum chloride, 0.6-1.6 parts of sodium citrate, 0.4-0.8 part of a dispersant, 0.2-0.5 part ofa crosslinking agent and 1-1.2 parts of a plasticizer. The preparation method overcomes the deficiencies of the prior art, adopts a combination of various biodegradable components to prepare the starch blended plastic in order to make the product effectively and completely degraded, and has the advantages of simple production process, convenience in production and low cost, and is suitable for promotion and production.

The invention relates to daily environment-friendly degradable plastic thin film. The daily environment-friendly degradable plastic thin film is prepared from, by weight percentage, 50-80% of thin-film-grade polyethylene and 20-50% of thin-film-grade polylactic acid. The polylactic acid is an ideal fully-degradable plastic, and the thin-film-grade polylactic acid and the thin-film-grade polyethylene can be blended to prepare the degradable plastic film with different degradation rates. The daily environment-friendly degradable plastic thin film can be produced by using a common plastic film blowing machine, during production, thin-film-grade polyethylene particles and the thin-film-grade polylactic acid can be uniformly mixed, and the degradable plastic thin film can be formed through blowing of the plastic film blowing machine. The components of the thin film are the polylactic acid and thin-film-grade polyethylene plastics, and since the polylactic acid can be automatically decomposed at the ambient temperature higher than 55 DEG C or under the function of rich oxygen and microorganisms, the degradation of the discarded polylactic acid thin film in the discarded environment can be ensured.

The invention provides a recombinant spider silk protein. The sequence structure comprises at least two spider silk protein structural domain monomers and at least one protease enzyme digestion site;each protease enzyme digestion site is positioned between every two adjacent spider silk protein structural domain monomers. By inserting each protease enzyme digestion site between every two adjacentspider silk protein domain monomers, when the recombinant spider silk protein is used in vitro, the recombinant spider silk protein can be combined with a tool enzyme to control the enzymolysis of the recombinant spider silk protein. Compared with existing spider silk proteins which need to be slowly degraded for a long time under the assistance of microorganisms, the recombinant spider silk protein has the advantage of controllable degradation; when the recombinant spider silk protein is used in the human body, since the protease enzyme digestion sites on the recombinant spider silk proteincan be enzymatically hydrolyzed by enzymes in the human body, a biological material prepared from the recombinant spider silk protein can be slowly degraded in the human body, so that the applicationvalue of the recombinant spider silk protein is increased, and the application is wider.

The invention relates to the field of feed additives, in particular to a complex enzyme capable of improving production properties of suckling piglets and an application of the complex enzyme. The complex enzyme comprises 60-80wt% of endogenous enzymes and 20-40wt% of non-starch polysaccharides enzymes, wherein the endogenous enzymes comprise low-temperature alpha-amylase, glucamylase, acid protease, neutral protease and alkali protease; and the non-starch polysaccharides enzymes comprise xylanase obtained through trichoderma reesei liquid fermentation, mannase obtained through aspergillus niger solid fermentation, beta-glucanase, cellulase and pectinase. The problem of low digestion and utilization rate of a feed, caused by imperfect digestive enzymes of the suckling piglets at the stagecan be effectively solved, and the raising cost can be saved.

A degradable plastic film is composed of film-grade polyethylene and film-grade polylactic acid. The weight percentage of film-grade polyethylene is 50%-80%, and the weight percentage of film-grade polylactic acid is 20%-50%. Polylactic acid is an ideal fully degradable plastic, and film-grade polylactic acid and film-grade polyethylene can be blended to make degradable plastic films with different degradation rates. The invention can be produced by an ordinary plastic film blowing machine. During production, the film-grade polyethylene particles and film-grade polylactic acid can be evenly mixed, and the degradable plastic film can be blown by the plastic film blowing machine. The composition of the present invention has polylactic acid and film-grade polyethylene plastics, because polylactic acid will decompose automatically when the ambient temperature is higher than 55°C or under the action of oxygen-enriched and microorganisms, the discarded polylactic acid film will be in the discarded environment , can guarantee degradation.

The invention discloses a polyformaldehyde monofilament for fishing. The polyformaldehyde monofilament is prepared from the following components in parts by weight: 75-90 parts of polyformaldehyde, 0.5-3 parts of graphene, 7.5-17 parts of thermoplastic polyurethane, 0.5-3 parts of an antioxidant, 0.5-1 part of a formaldehyde absorbent and 0. 5-1 part of a lubricant. According to the fishing polyformaldehyde monofilament, graphene and thermoplastic polyurethane are blended, then polyformaldehyde is reinforced, toughened and modified, and the polyformaldehyde monofilament for fishing is preparedby melt spinning, three-stage thermal stretching and heat setting processes. A preparation method has the advantages of simple operation process and low production cost. The prepared reinforced and toughened polyformaldehyde monofilament for fishing can be used for polyformaldehyde rope nets, ocean trawls, breeding nets, polyformaldehyde ropes and the like.

The invention relates to the technical field of water treatment and degradation, and more specifically relates to a filter screen electrolytic apparatus used for water treatment. The filter screen electrolytic apparatus comprises a liquid inlet and a liquid outlet, wherein cone-shaped tubes and an electrolytic bath welded with the cone-shaped tubes are arranged between the liquid inlet and the liquid outlet, the electrolytic bath is in a sealing state; the corresponding filter screen electrodes are arranged in the middle of the electrolytic bath, a filter block is arranged at front end of the filter screen electrode, and the filter block employs a ceramic micropore plate. According to the invention, the filter screen electrode is arranged in the electrolytic bath, degradation of an organic matter can be guaranteed, and at the same time, liquidity of water flow can be guaranteed, a structure space of the electrolytic bath is reduced, and the filter screen electrolytic apparatus has the characteristics of convenient usage, simple operation, good practicality and low cost.

The invention discloses a system and a method for resourceful treatment of high-salt organic wastewater. The system comprises five units, namely a raw water concentration unit, an atomization pyrolysis unit, a sodium sulfate purification unit, a hydrochloric acid recovery unit and a tail gas treatment unit. The raw water concentration unit is used for concentrating the high-salt organic wastewater; the atomization pyrolysis unit is used for adding an acidifying agent into the concentrated solution for acidifying, adding an oxidizing agent at the same time, thoroughly oxidizing and removing organic matters in water through atomization pyrolysis, and separating to obtain hydrogen chloride gas and sodium sulfate mixed salt; the sodium sulfate purification unit is used for dissolving the separated sodium sulfate mixed salt, removing impurities, evaporating and crystallizing, and purifying sodium sulfate through recrystallization; the hydrochloric acid recovery unit is used for filtering and condensing the separated hydrogen chloride gas and recovering hydrochloric acid; and the tail gas treatment unit is used for deacidifying and purifying residual tail gas of the hydrochloric acid recovery unit. According to the system and the method, organic matters in the high-salinity wastewater can be efficiently removed, and hydrochloric acid and sodium sulfate crystalline salt can be recycled; the resourceful treatment of the high-salt organic wastewater is realized, and the method has a relatively good application prospect.

The invention belongs to the technical field of preparation technology of RNA samples from aquatic animals, and specifically relates to a method for extracting total RNA from hemolymph of procambarusclarkii. The method includes two main steps of extracting the hemolymph of procambarus clarkii and separating blood cells and extracting the total RNA from the hemolymph samples. The extraction of thetotal RNA can be completed with only a small amount of hemolymph, so that the procambarus clarkii can be still alive after blood drawing, and the observation and study on the genetic changes in the bodies of the procambarus clarkii can be continuously carried out. The extracted total RNA is excellent in quality and little in degradation and can be used for high-throughput sequencing; and the method is low in cost, simple in operation and stable in extraction effect, and can guarantee the activity of the procambarus clarkii while extracting the total RNA from the hemolymph.

The invention relates to an environmentally-friendly degradation film, which comprises 50-80 wt% of film-grade polyethylene and 20-50 wt% of film-grade polylactic acid. According to the present invention, polylactic acid is an ideal fully-degradable plastic, such that the degradable plastic films with different degradation rates can be prepared by blending the film-grade polylactic acid and the film-grade polyethylene; the environmentally-friendly degradation film can be produced by using the common plastic film blowing machine, wherein the film-grade polylactic acid and the film-grade polyethylene are uniformly mixed during the production, and the degradable plastic film can be blown through the plastic film blowing machine; and the environmentally-friendly degradation film comprises thepolylactic acid and the film-grade polyethylene plastic, and the polylactic acid can be automatically decomposed at the ambient temperature of higher than 55 DEG C or under the action of rich oxygen and microorganisms, such that the waste polylactic acid film can be degraded in the waste environment.

The invention discloses a fixing part for the bottom of a paper-plastic product and a preparation method of the fixing part. The fixing part comprises a fixing base, two lower side baffles are installed on the fixing base, a screw rod is installed on one lower side baffle, a guide rod is installed on the other lower side baffle, two upper side baffles are arranged above the two lower side baffles,the screw rod is in threaded connection with one upper side baffle, and the guide rod is in sliding connection with the other upper side baffle. According to the fixing part, through the arrangementof the screw rod and the guide rod, the distance between the upper side baffles and the lower side baffles can be adjusted, the fixing part can be installed at the corner position of the bottom of thepaper-plastic product, fixing of the corner positions of the paper-plastic product at different heights is achieved, and the paper-plastic product is effectively prevented from deforming in the usingprocess; and when the fixing part is degraded, no pollution component is generated, safety and environmental protection are achieved, meanwhile, the degradation rate is high, and the 25-day degradation rate of the fixing part for the bottom of the paper-plastic product is 99% to 99.5% through GB/T 20197-2006 measurement.

The invention discloses a special long-acting slow release composite fertilizer for cotton, and relates to the field of a composite fertilizer. The composite fertilizer is prepared from a composite fertilizer nutrient and a slow release coating film, wherein the composite fertilizer nutrient is prepared from the following raw materials in parts by weight: 100 to 160 parts of bauxite modified edible fungus dregs, 80 to 100 parts of manure organic fertilizers, 40 to 60 parts of urea, 35 to 55 parts of monocalcium phosphate, 20 to 35 parts of ammonium phosphate, 10 to 15 parts of molybdenum trisulfate, 16 to 22 parts of potassium chloride, 13 to 18 parts of copper sulfate, 22 to 28 parts of ammonium chloride, 6 to 10 parts of potassium sulphate, 16 to 20 parts of sodium nitrate and 28 to 36 parts of crop straws; the slow release coating film is prepared from the following raw materials in parts by weight: 60 to 80 parts of polylactic acid, 30 to 40 parts of starch, 25 to 45 parts of bamboo fiber composite polyhydroxybutyrate, 30 to 40 parts of polyvinyl alcohol, 10 to 15 parts of hydroxymethyl propyl cellulose and 5 to 6 parts of propylene glycol methyl ether acetate; the composite fertilizer contains organic fertilizers and inorganic fertilizers; meanwhile, the release speed of the composite fertilizer is low; the fertilizer waste and the excessive development of the cotton rootsystem cannot be caused; the slow release film has degradation performance; the pollution cannot be caused on the land.