153results about How to "Effective inactivation" patented technology

The invention relates to a method for preparing a biomaterial of acellular small intestinal submucosa, which comprises the steps of preposition treatment, acellular treatment, enzyme treatment, preparations of membranous products and particle products. Compared with the prior art, the biomaterial has higher bioactivity and biocompatibility, no obvious immune rejection and no toxic effect on cells; besides, the biomaterial has a certain mechanical strength and toughness, and variable shape, size and thickness, thereby being convenient for clinical suturing and fixing. At the same time, the preparation method has the advantages of unlimited raw material source, cell-free residues, no ethical issues and being capable of effectively inactivating virus. The prepared products are applicable to the biomedical engineering fields, such as repairing defections of body tissue, serving as tissue filling materials, repairing facial depression deformity, serving as tissue reinforcements to replace fascia, repairing membranous defections and malnourished and infected surfaces of wound, serving as materials for biodegradable stents, and serving as injectable filling materials.

The invention provides a ship ballast water treatment method and a discharge reactor. Ballast water firstly reaches a stainless steel filter screen through a water inlet pipeline, and is filtered by a microporous filter to enter the discharge reactor with particle catalyst; pulse high voltage is applied between a high voltage electrode and a ground electrode of the discharge reactor to generate high voltage pulse discharge; oxygen-containing gas is communicated with the discharge reactor during discharging process, the ballast water treated by the discharge reactor enters a ballast cabin via a filter arranged at the outlet of the discharge reactor. The invention enables the plasma generated by discharging to directly and rapidly react with exotic causative agent and harmful aquatic matter in ballast water, and kills and inactivates the exotic causative agent and harmful aquatic matter under a series of online generated physical and chemical efficacies, and accordingly reduces the pollution of the ballast water to the ocean.

The invention relates to a sludge treatment method based on wet oxidation. The sludge treatment method comprises the following steps: fully mixing a sludge material and hot liquid in a physical-chemical pre-treater during a pretreatment process; after the preparation of the sludge material is completed, conveying the sludge material into an oxidation reaction process; during the oxidation reaction process, carrying out wet oxidation reaction between the sludge material and oxygen of which the temperature is 60 DEG C-80 DEG C in an oxidation reactor, wherein gas and high-temperature material are generated after the wet oxidation reaction is completed, and the gas mainly contains carbon dioxide and water vapor and is directly discharged into the air; enabling the high-temperature material to enter into a flash dehydration process, wherein the high-temperature material firstly enters a flash tank for flashing to produce gas and material, the produced gas is purified and then discharged into the air; enabling the generated material to pass through a heat exchanger, then carrying out solid-liquid separation to obtain separated solids and liquid which can be used for the second time. By the sludge treatment method, the sludge can be efficiently and reasonably treated so that the treated sludge can be recycled. The sludge treatment method can be widely applied to sludge treatment.

The invention belongs to the technical field of environmental protection and in particular relates to a method for removing harmful algae pollution in water body by adopting electro-Fenton. Hydrogen peroxide and ferrous ions in a reactor react to generate hydroxyl radicals, at the same time, the ferrous ions are regenerated from iron ions and iron hydroxide in the cathode region for electrolysis through reduction, thus continuously generating vast hydroxyl radicals, efficiently inactivating algae cells, simultaneously rapidly carrying out oxidation degradation on the microcystins and effectively avoiding secondary pollution. The body part of the reactor comprises a power source, electrodes, an electrolytic bath and a magnetic stirrer. After the algae liquid to be treated is introduced to the electrolytic bath, the magnetic stirrer at the bottom of the electrolytic bath is used for ensuring the algae liquid to be uniformly distributed in the whole reactor. Under the set process parameters, the method can realize rapid inactivation of the harmful algae and simultaneously realize efficient degradation of the microcystins.

The invention relates to a method for catalytic wet oxidation of industrial sludge. The method includes the steps of (1), uniformly mixing industrial sludge raw materials with a catalyst, delivering the mixture into a reaction kettle, and feeding oxygen into the reaction kettle so as to subject the industrial sludge to wet oxidation; (2), delivering the industrial sludge subjected to wet oxidation into a cooler to cool, and delivering the cooled industrial sludge into a three-phase separator so as to obtain solid sludge at the bottom of the three-phase separator; (3), subjecting the solid sludge to dehydration treatment. Compared with the prior art, the method for catalytic wet oxidation of the industrial sludge has the advantages that the industrial sludge is reduced remarkably, refractory organics are removed to kill harmful pathogenic bacteria, treated sludge organic content is low to facilitate subsequent treatment, a liquid phase obtained after solid waste separation returns to an industrial wastewater treatment system to supplement a carbon source, and wet oxidation conditions can be lowered remarkably by the catalyst, so that energy consumption is reduced.

The invention relates to a preparation method of a high-purity human coagulation factor IX, which comprises the following steps: melting refrigerated plasma, and carrying out low-temperature centrifugation; adsorbing with a DEAE (diethylaminoethanol) Sephadex A-50 gel to remove the coagulation factor IX in the cold-glue plasma; removing impure proteins in the solution by using polyethyleneglycol; carrying out S / D virus inactivation; carrying out anion exchange column chromatography to obtain a purified coagulation factor IX solution; passing through a heparin affinity column for further chromatography to obtain a high-purity coagulation factor IX solution; carrying out ultrafiltration, dialysis and concentration, and adding arginine hydrochloride and glycinate as protective agents; filtering through a 20nm filter element to remove viruses; carrying out freeze-drying; and carrying out dry heat virus inactivation. The protein protective agents are added during the gel adsorption, column chromatography and ultrafiltration dialysis, thereby lowering the activation probability of the FIX product thrombin and enhancing the qualification rate of the product. The technique has high product yield; the FIX specific activity can reach 150 IU / mg or so which is much higher than that of the traditional product; and by performing the three-step virus inactivation, the product is safe and reliable to use.

The invention relates to a method for efficiently controlling, eliminating and inactivating blue algae, particularly microcystis aeruginosa in the source water, the water in the water plant, the scenic lake water and the river water by irradiating electron beams, belonging to the field of the water pollution control, the water treatment technology and the environmental protection. The test proves that the electron beams are irradiated by an electronic irradiating device which has the electron beam irradiating energy of 1.8 MeV and the electron beam current of 1.0 mA at the room temperature of 25 DEG C and the atmospheric pressure of 1013.2 hpa, and the optimum dosage of the electron beams irradiated for eliminating or inactivating the microcystis aeruginosa is 4-5 kGy.

The invention relates to a novel biological artificial cornea capable of realizing cellularization through in-vivo induction as well as realizing quick transparency. The novel biological artificial cornea is prepared with a method in the steps as follows: 1, obtaining of a cornea raw material; 2, preparation of a cornea scaffold; 3, deep modification of the cornea scaffold; 4, deep inactivation of the cornea for removal of pyrogen; 5, irradiation sterilization of the cornea; 6, cultivation and implantation of corneal endothelial cells. Deep and light lamellar biological artificial corneas with different thicknesses and a full-thickness biological artificial cornea can be established. After being implanted, the novel biological artificial cornea can be quickly healed, becomes transparent quickly and keeps good refraction, the eyesight can be recovered and the eyeball is beautified. The obtained biological artificial cornea has good mechanical performance and biocompatibility, a full-thickness cornea graft is formed after endothelial cells are implanted on a full-thickness cornea stroma scaffold and can be rebuilt in vivo, perform in-vivo induction to promote growth of corneal limbal stem cells and growth of corneal epithelial cells and become transparent quickly on the basis, the treatment efficiency and effects are improved, and an application of lamellar keratoplasty and an application of penetrating keratoplasty are both considered.

The invention discloses a method for treating short-flow water with sedimentation and air-floating coupling as a core, and relates to short-flow water treatment methods with sedimentation-air-floating coupling as cores and with multiple water purification technologies integrated. The method aims to solve the problem that an existing water purification technological process is long, the occupied area is large, capital construction cost is high, and operating cost is high. The method comprises the first step of adding and mixing coagulants and carrying out a flocculation reaction, the second step of carrying out mud and water separation, the third step of carrying out advanced process treatment and the fourth step of carrying out disinfection. A filter pool does not need to be arranged in the method, and the method is short in technological process, low in capital construction cost, convenient to operate and manage, low in operating cost and good in output water quality. The method is mainly used for treating city life drinking water.

The invention relates to a sludge treatment method based on wet oxidation. The sludge treatment method comprises the following steps: fully mixing a sludge material and hot liquid in a physical-chemical pre-treater during a pretreatment process; after the preparation of the sludge material is completed, conveying the sludge material into an oxidation reaction process; during the oxidation reaction process, carrying out wet oxidation reaction between the sludge material and oxygen of which the temperature is 60 DEG C-80 DEG C in an oxidation reactor, wherein gas and high-temperature material are generated after the wet oxidation reaction is completed, and the gas mainly contains carbon dioxide and water vapor and is directly discharged into the air; enabling the high-temperature material to enter into a flash dehydration process, wherein the high-temperature material firstly enters a flash tank for flashing to produce gas and material, the produced gas is purified and then discharged into the air; enabling the generated material to pass through a heat exchanger, then carrying out solid-liquid separation to obtain separated solids and liquid which can be used for the second time. By the sludge treatment method, the sludge can be efficiently and reasonably treated so that the treated sludge can be recycled. The sludge treatment method can be widely applied to sludge treatment.

The invention discloses a magnetic chitosan microsphere / zinc oxide composite antibacterial agent. A preparation method comprises the following steps: taking magnetic chitosan microspheres prepared byusing a one-step precipitation method as a carrier, putting the magnetic chitosan microspheres into a Zn(Ac)2.2H2O solution, adding an NaOH solution with a certain concentration, controlling the temperature and stirring, and carrying out a chemical deposition reaction to obtain the magnetic chitosan microsphere / zinc oxide composite antibacterial agent. The surface of the composite antibacterial agent is loaded with a large amount of nanometer granular zinc oxide, the composite antibacterial agent is high in inactivation ratio for bacteria in water and lasting in effect, and the composite antibacterial agent is of magnetism and is convenient to recycle.

The invention discloses a method used for inactivating virus based on an atmospheric pressure low temperature plasma activated solution. The method comprises following steps: 1, gas is introduced intoan atmospheric pressure low temperature plasma generator so as to realize generation of an atmospheric pressure low temperature plasma through excitation; 2, an atmospheric pressure low temperature plasma activated solution is subjected to activation so as to obtain a plasma activated solution; 3, and the plasma activated solution is used for treating a solution containing virus. The method is capable of killing virus effectively; no toxicity, no irritation, and no peculiar smell is caused; environment pollution caused by activation of virus with chemical reagents such as formaldehyde is avoided; and in preparation process of the atmospheric pressure low temperature plasma activated solution, energy consumption is low, operation is convenient, and production cost is reduced effectively.