79results about How to "Solve the problem of pollution" patented technology

The invention relates to a preparation method and use of an aqueous polymer/isocyanate adhesive, which belong to the technical field of chemical adhesives. In the invention, recycled polyethylene terephthalate (PET), diethanol amine, caprolactam and aqueous solution of glacial acetic acid are used to prepare a PET water-based polymer; toluene diisocynate and castor oil are used to prepare an isocyanate-terminated polyurethane prepolymer; and when used, PET aqueous polymer emulsion and the isocyanate-terminated polyurethane prepolymer are mixed at room temperature to obtain the aqueous polymer/isocyanate adhesive. The aqueous polymer/isocyanate adhesive is used for adhering wood.

The invention discloses a method for recycling of soybean whey wastewater by a membrane separation technology. The method includes: sterilization pretreatment; flocculation and centrifugal separation for impurity removal; whey protein recovery by ultrafiltration membrane continuous separation; whey protein powder recovery; oligosaccharide syrup recovery by nanofiltration membrane continuous concentration; oligosaccharide recovery; and dialysis water recovery by reverse osmosis membrane continuous concentration. The method provided in the invention can avoid whey wastewater rancidity and ultrafiltration membrane pollution and plugging, and improves the product quality. Employment of the continuous separation concentration mode reduces stay of intercepted objects or protein, impurity concentrated liquors in a membrane assembly to the utmost, and back-and-forth circulation between a membrane liquid inlet tank and a membrane system no longer exists. Meanwhile, the membrane surface flow speed is controlled, so that the problems of membrane pollution and low separation efficiency are solved. An osmosis filtration membrane washing process is adopted, and water is added automatically for filter wash, so that the membrane pollution and plugging problems are solved, and the product quality is improved. The selection of high temperature resistant hydrophilic membrane materials guarantee a high water flux and help to reduce membrane pollution.

The invention relates to a medical degradable composite material, which consists of polylactic acid (PLA), toughening agent, inorganic nano composite material and antioxidant, wherein in the composition, each 100 portions of PLA by weight contain 20 to 50 portions of the toughening agent, 0.5 to 3 portions of the inorganic nano composite material, and 0.1 to 0.5 portion of the antioxidant. The toughening agent is thermoplastic polyurethane (TPU) or styrene type thermoplastic elastomer (SEBS or SBS). The inorganic nano composite material is silver-supported nano silicon dioxide or silver-supported nano titanium dioxide. The composite material is prepared by adopting a method of melting and blending, and has the advantages of reasonable formulation, stable performance, good toughness and good heat resistance; an injection molded product is easy to demould; small molecular plasticizing agent does not need to be added during processing; compounds are prevented from separating, polluting liquid medicine and entering human body; and the composite material is applicable to producing disposable injectors, can automatically degrade, and reduces the problem of white pollution of disposable medical products.

The invention discloses a salt-containing wastewater treatment method. The wastewater goes through an adjusting tank, a softening sedimentation tank, a multi-medium filter, an ultrafiltration device, a first-section roll type reverse osmosis system, a second-section roll type reverse osmosis system, an ion exchange device, a roll type nanofiltration membrane device, a high-pressure reverse osmosis membrane system, a third-section roll type reverse osmosis system and an efficient evaporator. The treatment method disclosed by the invention has the advantages of strong anti-pollution capacity, solution of blocking problem, high concentration multiple, high recycling efficiency, high treatment efficiency, high automation degree, investment saving and low operation cost.

The invention provides a washing machine and a method for back-flushing a pre-filter of the washing machine. The washing machine comprises a circulating water filtering system, the circulating water filtering system comprises the pre-filter and a filtering film assembly arranged on a downstream pipeline of the pre-filter, the pre-filter and the filtering film assembly are configured in a way that during the circulating water filtering flow of the washing machine, and water discharged from a washing cylinder of the washing machine is filtered and then is recycled back to the washing cylinder. The filtering film assembly is further configured in a way that after the circulating water filtering flow and/or the filtering film assembly flushing flow, and residual water in the filtering film assembly is reversely discharged to the pre-filter in a controllable manner in order to carry out back-flushing to the pre-filter. According to the invention, after the circulating water filtering flow, residual water in the filtering film assembly carries out back-flushing to the pre-filter, the water source is reasonably utilized, and a filter screen in the pre-filter can be cleaned to a certain extent.

The invention provides a washing machine and a control method thereof. The washing machine comprises a washing cylinder, a filtration film assembly and a pumping device arranged on a pipeline between a water outlet of the washing cylinder and the filtration film assembly. The pumping device is configured in a way that during the filtering and water-producing stage of the filtration film assembly, the pumping device works in a first pumping manner and has first lift in order to pump water in the washing cylinder to the filtration film assembly, and the water level of water in the filtration film assembly is not higher than the lower edge of a discharge opening of the filtration film assembly. By means of different lifts of the pumping device, functions of the washing machine in different working stages are achieved, during the filtering and water-producing stage of the filtration film assembly, the low-lift water pump enables the water level of water in the filtration film assembly to be not higher than the lower edge of the discharge opening of the filtration film assembly, and therefore water from the washing cylinder can be discharged from the discharge opening of the filtration film assembly, and the fact that during the water filtration period, the total water amount of the washing cylinder basically keeps unchanged is guaranteed.

The present invention is stone waste solidifying treatment method. The mixture of type-I portland cement and blast furnace cinder in different ratio is used as the stone waste solidifying agent, while type-II portland cement being used for comparison. The solidified stone waste may be used as the useful resource.

The invention provides a sleep promoting tea pillow containing herbal medicines of Miao nationality. The tea pillow is composed of a pillow cover and a pillow interior which is sewed in the pillow cover, wherein medicine stuffing is filled in the pillow interior, and the medicine stuffing includes tea leaves and the herbal medicines of the Miao nationality; and the stuffing of the herbal medicines of the Miao nationality includes the following medicines: poria with hostwood, lignum santali albi, common selfheal fruit-spike, fructus viticis, magnetite, silkworm shit, herba eupatorii, sweet wormwood herb, caulis polygoni multiflori, medulla junci, herba rabdosiae, tuberculate speranskia herb, flos carthami, herba schizonepetae, flos albiziae, semen cassiae torae, folium mori, flos chrysanthemi indici, rhizoma acori graminei, lysimachia foenum-graecum hance, lycopodium clavatum, borneol, peppermint leaf, cacumen platycladi and lophatherum gracile. According to the tea pillow disclosed by the invention, the medicine stuffing of the pillow interior is a mixture obtained through the compatibility of the tea leaves and the herbal medicines of the Miao nationality; since the tea leaves are rich in nutrient elements essential to human bodies, the tea pillow is high in pharmacological activity, and the tea pillow has functions of refreshing and enhancing intelligence, preventing and resisting cancers and enhancing constitution; by combining and mixing the tea leaves with the crushed herbal medicines of the Miao nationality, the medicine pillow is loose and soft and is free from toxic and side effects to the human bodies; and the pillow can disperse aromatic smell, and the pillow has functions of tranquilizing and allaying excitement and promoting sleep.

The invention discloses a soothing tea pillow. A pillow interior comprises, by weight, 30 g to 40 g of dens draconis, 20 g to 30 g of rhizoma anemarrhenae, 8 g to 15 g of tuckahoewithpine, 10 g to 20 g of rush, 20 g to 30 g of jujube kernels, 30 g to 40 g of lily, 10 g to 15 g of vine of multiflower knotweed, 10 g to 20 g of dried radix rehmanniae and 5 g to 10 g of acorus gramineus. The soothing tea pillow is suitable for people who suffer from insomnia and malaise, are sleepless at night, excessively worry, and are grieved with blood consumed, and has the effects of tranquilizing mind by nourishing the heart, being comfortable in heart qi, smoothing the state of mind, and being happy in mood and beneficial to will. Tea is selected to be used in cooperation with Chinese herbal medicine, and the tea contains abundant nutrient elements necessary for the human body and is high in the pharmacological activity, so that the tea has the effects of being refreshing and educational, preventing and resisting cancer and strengthening physique, and has no toxic or side effect. The tea pillow made of the tea has the function of absorbing smelly and preventing moisture, and can facilitate comfortable and cool sleep of people in hot summer.

The invention relates to a preparation method and application of a water-based polymer adhesive, and belongs to the technical field of chemical adhesives. PET aqueous polymer emulsion is prepared from recycled polyethylene terephthalate (PET), ethanolamine, an esterification catalyst, a heat stabilizer, phthalic anhydride and aqueous solution of sodium hydroxide; and when used, the PET aqueous polymer emulsion which is packaged independently is mixed with diphenylmethane-4,4'-diisocyanate at room temperature to obtain the water-based polymer adhesive. The water-based polymer adhesive is used for adhering wood plywood.

The invention relates to a device and method for depositing pure DLC (diamond-like carbon) by graphite cathode arc enhanced glow discharge. The invention aims to solve the problem that metal elementspollute DLC when the DLC is prepared by existing metal cathode arc enhanced glow discharge. A discharge path is constructed between a graphite cathode arc and an anode, carbon-containing gas is introduced into the discharge path, and the introduced carbon-containing gas is ionized by high-density electrons emitted by the graphite cathode arc and deposited on the surface of a workpiece to form thepure DLC. The proportion of ions to atoms in carbon-containing plasma can be controlled by changing a discharge mode between the cathode and the anode and adjusting discharge parameters. By the deviceand the method, the adverse effect of metal doping on tribological properties is avoided when the DLC is prepared by metal target enhanced glow discharge. The device and method are applied to the field of preparation of the DLC by plasma enhanced chemical vapor deposition.

The invention discloses a treatment method of carbonate-containing wastewater. The carbonate-containing wastewater passes through a regulating reservoir, a multi-medium filter, an ultrafiltration system, a reverse osmosis system, a primary resin softening system, a concentrated water reverse osmosis system, an advanced oxidation system, a tubular microfiltration system, a secondary resin softening system, a high-pressure reverse osmosis system, a sludge filter pressing system, an evaporation freezing crystallization system, an evaporation crystallization system, a wastewater treatment system, a recycling water tank and the like for process treatment to obtain sodium carbonate decahydrate product salt and by-products sodium sulfate and sodium chloride product salt. The treatment method has the advantages of strong anti-pollution capability, high concentration multiple, high recovery rate, high crystallized salt quality, high automation degree, low investment and low operation cost.

The invention discloses a processing method for salt-containing wastewater. Wastewater is processed successively by a regulating tank, a softening sedimentation tank, a multimedium filter, an ultrafiltration apparatus, a first-segment roll-type reverse osmosis system, a second-segment roll-type reverse osmosis system, an ion exchange apparatus, a roll-type nanofiltration membrane apparatus, a high-pressure reverse osmosis membrane system and an efficient evaporator. According to the method, the anti-pollution capability is strong, the obstruction problem is solved, the concentration multiple is high, the reusable efficiency is high, the processing efficiency is high, the automation degree is high, the investment is saved, and the operation cost is low.

The invention relates to the technical field of dyeing technique in the textile industry and particularly relates to a cotton fiber dyeing technique. According to the cotton fiber dyeing technique, firstly, enzyme is adopted to process cotton fiber to remove impurities such pectin under the smaller fiber operation condition, secondarily, the enzyme reaction conditions are mild, the PH value of the reaction environment is approximately neutral, the needed reaction temperature is lower, and the reaction time is short, so that the environment pollution problem of waste liquor can be solved; then a chromophile dye is adopted and reacts with the fiber to form a combination of a covalent bond, so that the dye becomes a part of fiber molecules, thus being bright in color, good in level-dyeing property, excellent in dyeing color fastness and simple in the using method; and finally, the dyed cotton fiber is firmed by adopting Na2CO3, with the color fixing rate up to 71%. The adopted dyeing technique has the characteristics of improving the dye-uptake of the dye, lowering the sewage treatment cost, reducing the environment pollution and the like.

The invention relates to a medical polylactic acid composite material and a disposal syringe prepared by the same. The medical degradable polylactic acid composite material comprises polylactic acid (PLA), a toughening agent and a nucleating agent, wherein each 100 parts of the polylactic acid (PLA) contains 10-50 parts of toughening agent and 1-5 parts of nucleating agent. The medical polylacticacid composite material has the advantages that all the blending components of the medical polylactic acid composite material are medical nontoxic products, monomers and corresponding polymer synthesized by the components are safe and nontoxic to human bodies and can be automatically degraded into water and carbon dioxide in 4-6 months under a composting condition, the blended resin does not contain small-molecule plasticizers, and the risks that the small-molecule plasticizers separate out, pollute liquid medicine and enter the human bodies are avoided; the medical polylactic acid composite material can be used as the special material for the disposable degradable syringe and used for preparing the disposable degradable syringe; the antibacterial performance and degradability of the medical polylactic acid composite material are evidently better than those of a pure polylactic acid raw material; the medical polylactic acid composite material is reasonable in formula, stable in performance, free of environment pollution and capable of being produced in clean workshops in a large-batch manner.

The invention discloses a tissue culture method of myrica rubra, belonging to the technical field of tissue culture of plants. The method comprises the following steps of: (1) preparing a culture medium; (2) culturing the sterile seedlings of the myrica rubram; and the like. Aiming at the characteristics of the branches of the myrica rubra, the invention provides a prominent and efficient sterilizing method to reduce the pollution rate of the explant of the myrica rubra to 40-50% from 80-90% before improvement so as to successfully build the culture system of the sterile seedlings of the myrica rubra; the method effectively breaks through the technical obstruct that the explant of the myrica rubra tissue culture has high pollution rate, and lays the foundation of improvement of the current myrica rubra culture variety. The method disclosed by the invention can be widely used in the breed improvement research of the myrica rubra and fast reproducing the good variety.

The invention relates to a medical polylactic acid composite material and a disposable syringe prepared from the same, in particular to a medical degradable composite material. The composite materialcomprises, by weight, 100 parts of PLA (polylactic acid), 10-50 parts of a flexibilizer and 0-1 part of an antioxidant. All blend components are medical nontoxic products, synthetic monomers and corresponding polymers are totally nontoxic to human bodies, automatic degradation into water and carbon dioxide within 4-6 months under a composting condition can be realized, mixed resin is free of micromolecular plasticizers, and risks of separation, entering human bodies and liquid medicine contamination of the similar composites are avoided. The medical polylactic acid composite material serving as a special material for disposable degradable syringes is evidently superior to pure polylactic acid materials in antibacterial and degradation performance and can be used for preparation of the disposable degradable syringes. The medical polylactic acid composite material is reasonable in formulation, stable in performance, free of environment pollution and available for large-batch production in purification workshops.

The invention relates to the field of sewage treatment, and especially relates to an aeration pipe and a self-cleaning method. The aeration pipe comprises an outer membrane (102) and an aeration inner pipe (103); the outer membrane (102) is made of an elastic material, and a plurality of flow guide ports (101) are formed in the outer membrane (102); one end of the aeration inner pipe (103) is sealed, and the other end of the aeration inner pipe (103) is connected with an air supply pipeline of an aeration system; a plurality of aeration inner pipe side holes (104) are formed in the aeration inner pipe (103); and the outer membrane (102) sleeves the outer side of the aeration inner pipe (103). When large bubbles flow out of the side holes (104) of the aeration inner pipe and then are discharged through a flow guide port on the outer membrane (102), the pressure at the flow guide port is reduced, the outer membrane retracts by virtue of elasticity, and the gas is blocked again, reduced or interrupted; meanwhile, under the conveying action of a fan, the outer membrane of the flow guide port is opened again by the pressure of the air, a large amount of bubbles flow out, and continuous oscillation turbulence is formed.

The invention provides a washing machine filtering assembly and a washing machine; the filtering assembly comprises a preposition filter and a filtering membrane assembly; a water distributing gas distribution member is arranged in a fluid path between the preposition filter and the filtering membrane assembly, so the fluid from a water outlet of the preposition filter is split by the water distributing gas distribution member and then enters the filtering membrane assembly. The filtering assembly is well applied to the washing machine having a circulating water filtration system so as to filter washing water and/or rinsing water; furthermore, the filtering assembly is applied to the washing machine so as to solve thread chips blocking problems, and can be conveniently cleaned online, thus prolonging the life of the filtering assembly of the washing machine, and ensuring the filtering assembly to have a high filtering flux.

The invention discloses a method for treating waste gases containing CS2 and H2S mixed pollutants and belongs to the technical field of waste gas treatment. Aiming at waste gases containing CS2 and accompanying with traced H2S discharged in the production process in industries such as synthetic fibers, leather, pharmacy and the like, a treatment method adopting an adsorption-low temperature plasmaoxidation-absorption integrated process is disclosed. A hyper-cross-linked polymeric adsorbent has high selective adsorption capacity on the CS2, the CS2 can be recovered by 99% or higher, and wasteof resources is avoided; and due to low temperature plasma, the trace H2S and CS2 can be efficiently oxidized into CO2, H2O and SO2, foul odor in the waste gas can be completely eliminated, and the SO2 in the tail gas is absorbed with alkali liquor, so that the H2S, CS2 and SO2 can achieve complete up-to-standard discharge.

The invention relate to an integrated treatment device for aquaculture wastewater. The device comprises a pretreatment component, an anaerobic component and an SBR component which are sequentially connected, wherein a portable grid, a regulating tank, a pneumatic lifting pump and a coagulation sedimentation tank are arranged on the pretreatment component; the anaerobic component comprises an ABR (Anoxic Baffled Reactor) reaction tank and a tail gas collection processor; an ABR reactor is connected with the coagulation sedimentation tank through a pipeline; the SBR (Sequencing Batch Reactor) component comprises an SBR reaction tank, a water distributor and an aeration device; the aeration device comprises multiple groups of diaphragm microporous aeration trays; and a clarification tank is connected with the SBR reaction tank. The device further comprises an automatic control component, wherein the automatic control component comprises a PLC (Programmable Logic Controller). The treatmentdevice has the advantages of reasonable structural design, low energy consumption, simple and convenient operation, relatively high degree of automation and intelligence, energy conservation and environmental protection. The treatment device can effectively remove suspended substances in aquaculture water by strengthening pretreatment, and adopts a combination of anaerobic and aerobic methods toreduce the energy consumption of sewage treatment while improving the treatment efficiency of the equipment.