177results about How to "Reduce pollution pressure" patented technology

The present invention discloses a composite board based on mixed waste polymers and a preparation method thereof. The preparation method of the composite board based on the mixed waste polymers is characterized by comprising the following steps of: (1) weighing the raw materials according to a certain proportion, adding the raw materials to a high-speed mixer, mixing at the temperature of 40-60 DEG C and the rotation speed of 800-2000 rpm for 20-30 minutes, cooling to room temperature and discharging; and (2) adding the mixed material to a mold, vulcanizing at the temperature of 150-180 DEG C and the pressure of 10-15 MPa for 10-20 minutes, cooling and relieving pressure. The composite board based on the mixed waste polymers provided by the invention does not need to consider the complex compatibility and plasticizing problems of multiple polymers, effectively solves the problems that the existing mixed waste polymers can not be classified and are discarded, and can be used as the substitute for wood to be applied in the tray manufacturing field and other fields. The production process provided by the invention is simple, uses existing equipment and is suitable for mass production.

The invention discloses a method for extracting a dietary fiber from potato residues, which comprises the following steps of: drying potato residues, pulverizing and screening to prepare potato residue powder; adding water into the potato residue powder, uniformly mixing to form a potato residue pulp, carrying out enzymolysis processing by using mixed enzyme, boiling and cooling; adding neutral proteinase to carry out enzymolysis processing, boiling and cooling, wherein the activity of the neutral proteinase is 1,600AU; filtering to form filter liquid and filter residues; and drying, pulverizing and screening the filter residues to obtain the dietary fiber. The invention improves the water-holding capacity and the oil-holding capacity of the potato dietary fiber by bio-enzyme processing and obtains a production process of the dietary fiber with optimal grain diameter simultaneously.

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 discloses a halide alkylation technique and a halide alkylation system for preparation of chloroethane. A special chloroethane reactor is used for replacing a plurality of reaction kettles to realize facility upsizing and automatic control and increase the transformation rate of raw materials. According to the difference of gaseous phase partial pressure of ethanol water solution at different temperatures and the difference of gaseous phase partial pressure of hydrochloric acid at different temperatures, most of the ethanol and hydrochloric acid in the reactant mixed gas is distilled and separated and then returned to the chloroethane reactor for reuse; according to the property that organic solvents such as chloroethane and ethanol have different boiling points at different concentrations, a rectification technique is adopted for rectifying and separating chloroethane of which the content satisfies the quality requirement; and according to the property that water has different solubilities in chloroethane at different temperatures, the temperature of chloroethane is reasonably controlled to realize dehydration of chloroethane, and most of the unreacted hydrochloric acid and alcohol in production is recycled and returned to a special reactor for reuse, so that the production cost is lowered, the total amount of pollutant is reduced and good application value is achieved.

The invention provides a method for manufacturing a soybean protein modified adhesive formaldehyde-free medium-density fiberboard, and belongs to the technical field of density fiberboard manufacture. The method comprises the following steps: heating, stirring and mixing raw materials (soybean pulp, a denaturing agent, a crosslinking agent, a defoaming agent, a preservative and water) to react; preparing the soybean protein formaldehyde-free adhesive by virtue of a colloid mill and a homogenizer; adding a water-proofing agent, a curing agent and a buffering agent into the soybean protein formaldehyde-free adhesive, stirring and mixing at room temperature, and uniformly mixing with wood fibers; performing drying, paving and hot-pressing to prepare the soybean protein modified adhesive formaldehyde-free medium-density fiberboard. The method is environment-friendly and non-pollution; the soybean protein modified adhesive formaldehyde-free medium-density fiberboard is high in adhesion strength, good in water proofing, low in price, low in viscosity and easy to treat and process, can be subjected to hot-pressing and cold-pressing in application, and is not easy to crack. The soybean protein modified adhesive formaldehyde-free medium-density fiberboard can be adhered to fibers and the like, and the processing process can be controlled, and an environment-friendly fiberboard can be manufactured.

The invention discloses a water-cooled circulating integrated stove which comprises an integrated stove housing, a cooker arranged on the table board of the integrated stove housing, a gas inlet device in the integrated stove housing, a cooling device, a blower device, an air outlet device and an oil fume separating and purifying device, wherein the cooling device comprises a heat absorption water heater, a heat storage water tank and a drain valve; the heat absorption water heater is provided with a flat heat absorption water tank; the heat storage water tank is communicated with the flat heat absorption water tank; the drain valve is communicated with the heat storage water tank; the blower device is provided with an air suction hole and a blower hole; the air outlet device comprises an air outlet passage and an air outlet communicated with the air outlet passage; the oil fume separating and purifying device comprises a mechanical grease separator and a media smog processor; the mechanical grease separator and the gas inlet device are combined into a whole; the media smog processor and the air outlet device are combined into a whole. Through the arrangement of the oil fume separating and purifying device, zero outdoor emission of kitchen oil fume is realized, which not only reduces pollution pressure of social environment, but also completely purifies indoor oil fume, thereby improving living environment.

The invention relates to a new method for the development and utilization of potato residue resource, comprising the following steps: (1) adding water to the potato residue pulp or potato residue powder, wherein the mass-volume ratio of the potato residue dry substance to water is 1:12.5-1:50; (2) adding protease to process, carrying out reaction for 5-150 min, and then boiling the mixture for 10min, cooling the mixture to 20-30 DEG C and adjusting the pH value of feed liquid to 7.0-7.3; (3) centrifuging the potato residue enzymolysis liquid processed in step (2), collecting supernate to obtain polypeptide liquid, drying the polypeptide liquid to obtain polypeptide powder; and (4) applying the sediment obtained in step (3) to extract potato residue dietary fiber. The preferable enzyme istrypsin, the technique has the following conditions: substrate concentration: 4%, pH value: 8.0, temperature: 50 DEG C, enzyme addition quantity: 7% and enzymolysis time: 90 min. In the invention, the enzyme processing separation method is adopted to prepare the potato residue antioxidant peptide and dietary fiber and develop and utilize the potato residue resource, the production conditions are mild and the additional value of the product is high.

The invention relates to a method for enriching metal rhenium in a high-temperature alloy waste recovery technology. The method is characterized by comprising the following steps of: adopting kieselguhr for replacing strong basic resin adopted in wet-process metallurgy, treating filtrate containing metal rhenium ions, enriching the metal rhenium ions in the filtrate by using the characteristics such as large porosity, strong adsorbability and stable chemical property of the kieselguhr, and soon afterwards, purifying the rhenium. The method has the remarkable advantages that the strong adsorption capacity and selectivity of the kieselguhr on the metal rhenium ions are used for enriching the metal rhenium ions in the filtrate; compared with ion exchange adsorption, the kieselguhr has high adsorption efficiency on the metal rhenium ions, increases the direct yield of the metal rhenium and is easy to desorb; lots of inorganic acids do not need to be consumed; the technological process is greatly shortened; the production working procedure is simplified; the environmental friendliness pressure is reduced; and simultaneously, high economic benefits are achieved. The method is a comprehensive recovery technology which is concise, short in technological process, small in specific volume and low in cost and has little pollution; and reports related to the method are not found at home and abroad.

The invention relates to a powdered activated carbon reflux/ultrafiltration combined technology for a water treatment plant. The technology is characterized in that powdered activated carbon are fed into an ultrafiltration membrane tank, and the powdered activated carbon which are kept in the ultrafiltration membrane tank for a proper time are refluxed to a pre-treatment coagulation period at a proper reflux ratio through utilizing a reflux pump, wherein the addition amount of the powdered activated carbon is 5-20mg/L, the reflux ratio is 1%-5% of a system flow, and the retention time of the powdered activated carbon is 2-24 hours. The organic pollutant content of raw water is reduced through fully utilizing the adsorptive capability of the powdered activated carbon in a mixed liquid of the technology, powdered activated carbon particles serve as flocculation cores so as to enhance coagulation, and a treatment effect of a coagulation period is improved; and moreover, the operation stability of a system is improved, and the water production rate is increased. The technology can be widely applied to an ultrafiltration combined technology for the water treatment plant.

The invention discloses a method and a device for using small-aperture spiral wound ultrafiltration membranes to treat papermaking wastewater. The main process includes coagulation efficient air floatation and small-aperture ultrafiltration system which comprises a water collection tank (1), an efficient air floating system (2), a small-aperture ultrafiltration system (3), a water recycling tank (4) and a concentrated water tank (5). The efficient air floating system comprises a coagulation portion and an air floatation portion. The method and the device for using small-aperture spiral wound ultrafiltration membranes to treat papermaking wastewater has the advantages that most CODCr (chemical oxygen demand), suspended matters and fibers can be removed by means of the coagulation efficient air floatation, the small-aperture spiral wound ultrafiltration membrane system using a linear water inlet runner net can effectively control membrane contamination, and the membrane molecular weight cutoff is 3000-10000Da. Quality of discharged water of the whole system is high and stable, turbidity of the discharged water is smaller than or equal to 3NTU (number of transfer units), the suspended matters can be removed completely, the discharged water is odorless in long-time standing, concentrated solution can be used as slurry to be reused after further treatment, and permeate liquid can be directly used as production circulating water for reuse. The method and the device for using small-aperture spiral wound ultrafiltration membranes to treat papermaking wastewater are used for treatment and recycling of papermaking wastewater, and worthy of wide popularization and application to the market.

The invention relates to a repairing system for lead-acid storage cells, which is formed by the combination of a cell equalizer and a desulfuration charger, aiming at the problem of the irreversible sulfuration of lead-acid storage cells, wherein the invention uses repair agent to repair, (or a series of repairing apparatuses to be matched with the repair agent for direct repair); the invention can refresh wasted vulcanized cells; the technology which is based on a principle of the self repairing or physical-chemical combination desulfuration realizes an aim of quickly eliminating the sulfuration. The invention has the advantages of more than doubling service lives of all lead-acid storage cells, prolonging driving distance of all vehicles and repairing all wasted lead-acid storage cells; moreover, the technology of the invention also has the advantages of simple operation, low cost, easy popularization, wide application range and obvious economic and social benefits.

The invention provides a compound fish peptide protein for feed and a preparation process thereof. The compound fish peptide protein for the feed comprises 6-8 parts by weight of fermented soybean meal and 2-4 parts by weight of fish soluble, wherein crude protein content of the fermented soybean meal is more than or equal to 50%, and DM of the fish soluble is more than or equal to 90%. High-quality peptide and protein raw materials are adopted, small peptide content is more than or equal to 12%, nutritional value is high, cost is low, and part of fish meal and blood plasma can be replaced.

The invention relates to a bacterial cellulose edible packaging product and a production method thereof, mainly aims to provide an edible food packing material and a preparation method thereof, and belongs to the technical field of biotechnology and food packaging materials. In the method, a bacterial cellulose film is produced by taking fruit and vegetable juice such as coconut milk, chayote juice, white gourd juice and the like as raw materials and acetobacter xylinum or acetobacter pasteurianus as strains through fermentation; and then the bacterial cellulose film is treated by alkali and hydrogen peroxide sequentially and then dried to form the edible food packaging product.

The invention provides a mineral separation and enrichment method for molybdenum oxide ores. The method includes the several steps of low intensity magnetic separation and high intensity magnetic separation for sulphide ore flotation tailing ore pulp, non-magnetic ore pulp material desliming, flotation and the like, and finally molybdenum middlings with high grade are obtained. The molybdenum middlings can serve as raw materials for extraction of ammonium molybdate products through hydrometallurgy, and low-grade hard-to-separate molybdenum oxide ore resources in copper and molybdenum polymetallic mixed associated ores are effectively and comprehensively recycled. The mineral separation and enrichment method for the molybdenum oxide ores can be widely applied to the field of recycling of the low-grade hard-to-separate molybdenum oxide ore resources in similar tailings.

The invention relates to the field of deep processing of fruit and vegetable, and especially to the technology of using fruit and vegetable for wine brewing and preparation of edible powder and cosmetic products. The invention is characterized in that: according to the novel method, the whole of fruit and vegetable is brewed and residual wine dregs from brewage of vegetable and fruit wine are utilized to produce vegetable and fruit powder and cosmetic skin care ointment or liquid, so a novel technical combination for comprehensive utilization of fruit and vegetable resources is provided and aplurality of varieties of new products are produced, thereby substantially improving the utilization rate of fresh vegetable fruit of existing technologies of deep processing.

Acetylenic ketone compounds and a preparing method thereof are disclosed. The general formula of the acetylenic ketone compounds is shown as a formula (I) in the specification. The preparing method includes adding an aldehyde compound A and a high-valence iodoalkyne compound B into a reaction system comprising a copper/gold salt catalyst, a secondary amine catalyst, a ligand catalyst and an oxidant and reacting at a temperature ranging from -20 DEG C to 200 DEG C. The acetylenic ketone compounds have a typical acetylenic ketone structure, have similarity with other acetylenic ketone compounds, and can be used for development of medicine intermediates and preparation of functional materials. The preparing method is simple in process, low in reaction condition requirements, safe and controllable in reaction procedures, high in atom utilization rate, high in production efficiency, and low in environment pollution stress, and obviously reduces the production cost of the acetylenic ketone compounds provided by the invention.

The invention provides a method for treating a fermentation filter residue and livestock and poultry manure mixture on a large scale through fly maggots. Livestock and poultry manure and gibberellin fermentation filter residues are mixed to control the pH value and used for large-scale fly maggot breeding. The method includes the following steps that firstly, a base material is prepared, wherein the livestock and poultry manure and the gibberellin fermentation filter residues are mixed to prepare the base material; secondly, the water content of the base material is adjusted; thirdly, fly maggot larvae are inoculated; fourthly, a breeding material is added; fifthly, the fly maggots are used for treating the fermentation filter residues and the livestock and poultry manure; sixthly, the fly maggots are separated; seventhly, organic manure is produced. The method is used for treating the fermentation filter residues and the livestock and poultry manure, the pressure of environment pollution can be relieved, resource utilization cost of the fermentation filter residues and the livestock and poultry manure can be reduced, the treatment difficulty can be lowered, collaborative industrialized treatment of the fermentation filter residues and the livestock and poultry manure is achieved, and economic benefits and social benefits are improved.