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55results about How to "Remove reach" patented technology

Heavy metal sewage treatment agent

The invention relates to a heavy metal sewage treatment agent which is prepared from dodecyl diethylene triamine, dimethyl diallyl ammonium chloride, acrylamide, dibenzoyl peroxide, powdered activated carbon, ethylene diamine tetraacetic acid, tert-butylamine, carbamate, dithiocar-bamate, thiocarbamic acid ester, starch, cellulose, water soluble starch xanthate ester, sodium silicate, potassium peroxodisulfate, sodium hydrosulfite, strong base and water. The heavy metal sewage treatment agent disclosed by the invention is formed by being modified with a high-molecular compound; the mixture contains a plurality of active groups which can be complexed, chelated, absorbed and exchanged with heavy metal, so that heavy metal ions in the aqueous solution can be removed; the heavy metal sewage treatment agent has good removal effect on heavy metal ions, the removal rate is above 97%, and furthermore, the heavy metal sewage treatment agent has stronger Ca2+ and Mg2+ resistant capability; the removal rate of cadmium-containing sewage is 99.8%, which meets the national emission standard; and the removal rate of chromium-containing sewage is above 99.6%.
Owner:江西省恩皓环保有限公司

Air purifier

The invention provides an air purifier which is filled with an air purifying agent composition. The air purifying agent composition comprises one or more selected from the following compositions to remove harmful pollutants in air. The compositions comprise an A component comprising an amino type chemical remover, an optional water-retaining agent, an optional alkali compound or an organical acid compound and optional water, a B component comprising an oxidizing agent type chemical remover, an optional water-retaining agent, an optional weak alkaline compound and optional water, and a C composition comprising a chemical absorber and optional water. In addition, the air purifying agent composition also can comprise a physical adsorbing agent. The chemical and physical multicomponent composition in the air purifier combines the advantages of a physical adsorption method and a chemical method, can be used for simultaneously removing common harmful volatile organic compounds such as methanal, benzene and benzene series such as methylbenzene and dimethylbenzene, and solid suspended particles in rooms or cars, can be used in combination according to specific needs, and is wide in application range and convenient in operation.
Owner:JIANGSU ATOM BIOSCI & PHARMA CO LTD

Device and method for washing and electrokinetic-combined remediation of heavy metal contaminated soil

The invention discloses a device and a method for washing and electrokinetic-combined remediation of heavy metal contaminated soil. The device comprises a washing system and an electrokinetic remediation system, wherein in the washing system, a leacheate storage tank, an acid storage tank and an alkali storage tank are communicated with a contaminated soil storage trough through a first peristaltic pump, a second peristaltic pump and a third peristaltic pump respectively; a stirrer is arranged in the leacheate storage tank; in the electrokinetic remediation system, an anode chamber and a cathode chamber are arranged on two sides of an electrokinetic remediation chamber, respectively; stirring devices are arranged in the anode chamber and the cathode chamber; a cathode of a DC power supply is connected with a cathode electrode arranged in the cathode chamber, and an anode of the DC power supply is connected with an anode electrode arranged in the anode chamber; an anolyte storage tank is communicated with the anode chamber through a fourth peristaltic pump and a fifth peristaltic pump, so as to form a loop; a catholyte storage tank is communicated with the cathode chamber through a sixth peristaltic pump and a seventh peristaltic pump, so as to form a loop; the bottom of the contaminated soil storage trough in the washing system is communicated with the electrokinetic remediation chamber through a mud pump.
Owner:江苏省环境工程技术有限公司

Ecological restoration device and method for urban black-odor riverway

The invention discloses an ecological restoration device and method for an urban black-odor riverway. The device comprises multi-stage overflow dams arranged at different water level differences of a black-odor river. A plurality of biological floating beds are arranged inside each overflow dam. A nanometer microhole aeration disc is arranged at the bottom of each biological floating bed. Floating plants are arranged inside the biological floating beds. A secondary combined subsurface wetland is arranged at the downstream part of the tail-stage overflow dam and comprises an aeration vertical flow wetland, a bending-flow type horizontal flow wetland and a water pump. Water inside the tail-stage overflow dam is lifted by the water pump and then enters the aeration vertical flow wetland, outflow water of the aeration vertical flow wetland flows into the bending-flow type horizontal flow wetland, and outflow water passing through the bending-flow type horizontal flow wetland flows back to the riverway. The device is simple in structure, low in energy consumption, and capable of efficiently removing nitrogen, phosphorus, sulphur, organic matters, heavy metal and other pollutants in the urban black-odor riverway at the same time.
Owner:WUHAN UNIV OF TECH

Chemical copper plating waste solution treatment method

The present invention relates to the technical field of industrial waste liquid treatments and recoveries, especially to a chemical copper plating waste solution treatment method for degrading organic pollutants in a chemical copper plating waste solution and recovering orthophosphates, wherein an oxidation method is adopted to carry out oxidative decomposition on organic pollutants in the chemical copper plating waste solution, concurrently hypophosphite and phosphate in the waste solution are oxidized into orthophosphate, the orthophosphate and copper ions in the waste solution are subjected to a chemical reaction to produce copper phosphate, the excess orthophosphate is added with metal ions so as to carry out a complete reaction of the orthophosphate and the metal ions in the waste solution to obtain the phosphate, and the obtained copper phosphate and the obtained phosphate are separated from the waste solution, and then are subjected to a drying treatment. The method has the following characteristics that: a chemical copper plating waste solution harmless treatment is achieved, resource recovery is achieved, good environmental benefits and good economic benefits are provided, and application prospects are wide.
Owner:东莞道汇环保科技股份有限公司

Method for removing tetracycline antibiotics in wastewater phosphorus recovery product

The invention relates to a method for removing tetracycline antibiotics in a wastewater phosphorus recovery product, belonging to the fields of water pollution control and resource regeneration, particularly a method for lowering ecological environment risk of a phosphorus recovery product. The method comprises the following steps: pretreating to remove suspended and colloidal organic substances in phosphorus-containing wastewater, and carrying out solid-liquid separation; regulating the pH value of the supernate to 8.0-11.0, adding a certain ratio of magnesium source or calcium source to perform magnesium ammonium phosphate or calcium phosphate crystallizing precipitation reaction, and adding alkali to control the pH value of the reaction at 8.0-11.0 until the reaction finishes; and carrying out solid-liquid separation to obtain the precipitate phosphorus recovery product. The steps can be carried out to remove the tetracycline antibiotics in the wastewater phosphorus recovery product. On the premise of ensuring the phosphorus recovery yield, the method can achieve the goal of removing tetracycline antibiotics by removing the suspended and colloidal organic substances in the wastewater, thereby lowering the ecological environment risk which can be caused by the phosphorus recovery product.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI

Method for treating chromium-containing groundwater by using modified artificial zeolite

The invention discloses a method for treating chromium-containing groundwater by using modified artificial zeolite, which is implemented by carrying out treatment on chromium-containing groundwater by using ferrous sulfate, aluminium chloride and chitosan modified artificial zeolite, the Al content of the surface of the modified artificial zeolite is significantly increased, and [AlO4]5- tetrahedron units with negative charges contained in the skeleton structure of the modified artificial zeolite are increased, and under the action of electrostatic attraction, hexavalent chromium in water is effectively removed; and the specific surface area of the modified artificial zeolite is increased, and the adsorption property of the modified artificial zeolite is enhanced, thereby achieving an effect of removing hexavalent chromium.
Owner:BEIJING ZHONGDI HONGKE ENVIRONMENT SCI & TECH

Method for removing harmful anions from aqueous solution by adopting Friedel salt or Kuzel salt

The invention discloses a method for removing harmful anions from an aqueous solution by adopting a Friedel salt or Kuzel salt. The method comprises a step of removing the harmful anions from the aqueous solution by adopting the Friedel salt or Kuzel salt, wherein the harmful anions comprise one or more of F<->, CN<->, SCN<->, As (III, V) and Cr (VI), and the aqueous solution comprises one or more of drinking water, underground water sources, industrial wastewater and tailings water containing harmful anions. According to the method disclosed by the invention, the Friedel salt or Kuzel salt is applied to the aqueous solution containing the harmful anions, the removal efficiency of the harmful anions is very high, and the effect is obvious; the materials required for preparing the Friedel salt or Kuzel salt are wide in source, low in preparation energy consumption and less in investment; by adopting the method to remove the anions from the aqueous solution, the flow is short and the cost is low, so that the method has a wide application prospect.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Method for removing COD of membrane concentrated liquid

The invention discloses a method for removing COD of membrane concentrated liquid. The method comprises three technical units such as cyclic oxidation treatment under ultraviolet ray irradiation, flocculation deposition and standard discharge. Through Fenton oxidation under ultraviolet ray irradiation, standard membrane concentrated liquid discharge is realized. The method realizes COD removal discharge satisfying the standard and heavy metal ion discharge satisfying the standard, replaces a high-energy consumption evaporation method for membrane concentrated liquid treatment, realizes low equipment investment, small floor space, less equipment reconstruction and low operation cost, and solves the problem that the existing evaporation method needs a special warehouse for storage of evaporated soluble solid waste.
Owner:NANJING YUANQUAN TECH CO LTD

Method for removing cold-embossing residual adhesive layer

The invention relates to a method for removing a cold-embossing residual adhesive layer, belonging to the nanofabrication field. The method is characterized in that light-proof material is selectively covered on the pattern surface of a light-transmitting template; the pattern surface is directly used for template embossing after being modified, so that the replication structure of photosensitive embossing adhesive can be cured selectively; and finally, the embossing adhesive at the uncured area is directly removed through washing by a chemical solvent, thereby realizing the purpose of removing the embossing residual adhesive layer after the embossing.
Owner:SHANGHAI NANOTECH PROMOTION CENT +1

Preparation method of high-density regenerated fibre spinning solution

The invention relates to a preparation method of high-density regenerated fibre spinning solution. The invention adds organic solvent with low boiling point into commonly prepared regenerated fibre spinning solution to dissolve regenerated fibre spinning solution system; the obtained spinning solution is defoamed after being filtered to obtain the regenerated fibre spinning solution with high density. The preparation method of the high-density regenerated fibre spinning solution of the invention is different from traditional spinning technology. The organic solvent with low boiling point is added into traditional regenerated fibre spinning solution, so that density same with the common spinning liquid needs to be prepared when preparing spinning solution; the adopted spinning procedure is characterized in that the spinning solution is defoamed after being filtered; the reason is as follows: spinning solution is easy to filter under low density and low viscosity, organic solvent with low boiling point can be removed in the defoaming procedure because defoaming is carried out under certain vacuum degree at high temperature; and spinning liquid with high density can be obtained by removing organic solvent with low boiling point.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Preparation method and application of nano-catalyst for efficiently treating trimethylamine polluted gas

The invention provides a preparation method and application of a nano-catalyst for efficiently treating trimethylamine polluted gas, and belongs to the technical field of odor pollutant treatment andgas phase pollution control. A stainless steel wire is selected as a conductive substrate, a conductive cathode loaded with a Co-MoS2 catalyst is prepared, a catalytic reaction membrane assembly is composed of the conductive cathode and conductive metal anode immersed in 0.5mol / L of a K2SO4 electrolyte solution, the polluted gas in a reactor is removed. According to the preparation method, photoelectro-catalytic technology is combined, under the action of bias voltage, photo-generated charge carriers are driven to different directions, recombination of electrons and holes is effectively inhibited, and the catalyzing efficiency of the catalyst is improved. The preparation method of the nano-catalyst has the beneficial effects that the synthesized Co-MoS2 composite catalyst is evenly dispersed in petal shapes, trimethylamine can be removed in a short time through the photoelectrochemistry synergistic effect, and the purpose of air purifying is achieved.
Owner:DALIAN UNIV OF TECH

Bubbling reaction cleaning device and method

The bubbling reaction cleaning set and method is based on bubble interface diffusion layer compressing technology. The pneumatically generated bubble wall is utilized as the reaction interface of the hetero gas-liquid-solid system. During the climbing and dragging course of the bubble along the surface of the material to be cleaned, the liquid-solid interface layer is compressed to optimize the interface mass transfer efficiency and to eliminate the organic pollutant in the material surface effectively.
Owner:IND TECH RES INST

Later-period processing equipment for composite dung leaking board

The invention relates to processing equipment, in particular to later-period processing equipment for a composite dung leaking board. In order to solve the technical problems, the invention designs the later-period processing equipment for the composite dung leaking board, which can completely remove excessive materials on one dung leaking board, can save labor power during operation, and can improve working efficiency. The later-period processing equipment for the composite dung leaking board provided by the invention comprises a base and two guide rods, wherein a placing board is connected on the top of the base, the top of the placing board is connected to a mounting board, and a connecting frame is connected on the mounting board; the two guide rods are separately connected to the twosides of the connecting frame in a sliding mode; a stamping board is connected between the bottoms of the guide rods at the two sides; return springs are connected between the guide rods and the connecting frame; and the return springs sleeve the guide rods. The stamping board is matched with a drive assembly for removing excessive materials on the dung leaking board, so that the effect of removing excessive materials on the dung leaking board is achieved.
Owner:安徽省农恪九鸿畜牧科技有限责任公司

Chemical mechanical grinding method applied to FinFET (fin field-effect transistor) structure

The invention provides a chemical mechanical grinding method applied to a FinFET (fin field-effect transistor) structure. The chemical mechanical grinding method comprises the steps of grinding oxide on silicone nitride; grinding the oxide and the silicone nitride, and collecting torque current signals of a motor; when the torque current signals suddenly change, grabbing a final grinding point, and stopping on a buffer cushion oxide layer; providing a certain amount of grinding time for completing grinding and forming the FinFET structure. The technical scheme is simple and feasible, the silicone nitride can be completely removed by utilizing chemical mechanical grinding, and the grinding action is stopped on the buffer cushion oxide layer, so that the effect of removing the silicone nitride without a wet method and removing the oxide without wet etching / dry etching is achieved.
Owner:SHANGHAI HUALI MICROELECTRONICS CORP

Novel high-speed high-strength paper tube adhesive and preparation method thereof

The invention provides a novel high-speed high-strength paper tube adhesive and a preparation method thereof. The preparation method comprises the following steps: firstly, adding water into a reaction kettle, adding kaolin and polyvinyl alcohol in a stirring state, then adding a dispersing agent, continuing to stir, and successively carrying out heating and heat preservation to obtain a mixed solution; adding hydrochloric acid to adjust the pH value of the mixed solution, adding formaldehyde for a reaction, observing the reaction condition until a glue separation phenomenon occurs, immediately adding ammonia water to adjust the pH value, adding corn starch which is stirred and dissolved in advance, keeping the temperature, and introducing cooling water for cooling to obtain polyvinyl formal glue; and dropwise adding a boric acid-borax aqueous solution which is dissolved in advance into the reaction kettle, adding water to adjust a solid content after dropwise adding is finished, continuing to perform cooling, adding diluted hydrochloric acid to adjust the pH value, finally adding a defoaming agent and an antiseptic bactericide, and carrying out cooling to obtain the novel high-speed high-strength paper tube adhesive. The paper tube adhesive prepared by the method can greatly improve the production efficiency of a tube coiling machine, enhances product quality, reduces the phenomenon of tube embracing during paper tube production and completely removes residual formaldehyde in an adhesive solution.
Owner:YUEYANG FOREST & PAPER CO LTD

Treatment technology of mother liquor of iron oxide red

The invention discloses a treatment technology of mother liquor of iron oxide red. The treatment technology comprises the following six steps: preprocessing by flocculation and depositing, pre-oxidizing, adjusting acid, performing low-pressure reverse osmosis, performing high-pressure reverse osmosis and performing MVR concentration evaporation. The technology is low in energy consumption, high inresource utilization rate, high in wastewater treatment efficiency, complete to treat, and free from secondary pollution; in addition, a complete closed-ring system is formed in the whole technology;the wastewater is recycled and is not drained.
Owner:绍兴齐英膜科技有限公司

Treating agent for removing heavy metals in wastewater

The invention belongs to the technical field of wastewater treatment and particularly relates to a treating agent for removing heavy metals in wastewater; the treating agent is prepared from 30-60 parts of Chinese medicine fermentation broth, 20-50 parts of tannins, 15-35 parts of dipotassium phosphate, and 5-20 parts of sodium polyacrylate. The treating agent according to the invention has the advantages that various heavy metal ions can be removed at a time, a varieties of heavy metal ions can be treated, the removal rate reaches 99% and above, the national specified emission standard is met, the Chinese medicine fermentation broth and tannins are natural materials and have low secondary pollution caused to water, a treating method is simple, and treating cost is low.
Owner:GUILIN RONGTONG TECH CO LTD

Chromizing treatment technology for food grade aluminum foil

The invention discloses a chromizing treatment technology for a food grade aluminum foil. The chromizing treatment technology comprises the following steps of a, firstly, performing cast rolling on analuminum ingot formed by molten aluminum water to obtain a 5-6mm aluminum plate, and then performing cast rolling on the aluminum plate for many times until the thickness is 0.08-0.11mm to form an aluminum sheet; b, performing degreasing; c, performing washing for the first time; d, performing bright dipping; e, performing washing for the second time; f, performing chromizing; g, performing washing for the third time; h, performing washing for the fourth time; and I, finally, performing drying, wherein in the step b, ultrasonic oscillation is used to perform circulation stirring on an alkaline degreasing bath; and in the steps e and h, the conductivity of pure water is smaller than or equal to 100us / cm. In chromizing treatment, multi-pass cleaning is performed before and after the technology, and various project indexes in the chromizing process are controlled, so that a chromizing layer after chromizing is uniform in thickness and color, good in corrosion resistance, perfect in wholefunction and strong in practicability.
Owner:JIAXING JINXIN AL CONTAINER

Purification process for thrombin

ActiveCN106119232AMild filter conditionsReduce vitalityEnzymesFiltrationMacromolecular Substances
The invention discloses a purification process for thrombin. The purification process comprises a step of nano filtration; before nano filtration is performed, a membrane bag is washed and filtered to remove impurity protein of which the molecular weight is greater than 200KD. According to the purification process disclosed by the invention, macromolecular proteins in a thrombin solution can be removed by washing and filtering the membrane bag, so that the condition that a nano-membrane pore channel is blocked by macromolecular substances is avoided; in addition, filtering conditions of the membrane bag are mild, so the condition that the activity of the thrombin is reduced is avoided, and the aim of removing non-lipid-enveloped viruses is achieved.
Owner:浙江杭康药业有限公司

Cyclic utilization method of zirconium oxide crystal processing waste powdery material

The invention discloses a cyclic utilization method of a zirconium oxide crystal processing waste powdery material, and particularly relates to a new cyclic utilization method which utilizes and meltsdown a mixture of zirconium oxide and yttrium oxide obtained through refining of zirconium oxide crystal processing waste powdery material to directly produce zirconium oxide crystals. The method comprises the following steps that firstly zirconium oxide crystal processing waste powdery material is subjected to magnetic separation so as to remove magnetic substances, then washed with a sodium hydroxide solution so as to remove silicon, washed with acid (sulfuric acid, nitric acid or hydrochloric acid) so as to remove iron after being filtered, then washed with purified water to remove the residual acid after being filtered, and then calcinated to obtain the gemdiamond-level high-purity zirconium oxide powdery material, the powdery material is added into a high frequency furnace again to be molten down and crystal pulled, and the zirconium oxide crystal product is produced. The method realizes the purpose that the zirconium oxide crystal processing waste powdery material is cyclicallyutilized to produce the zirconium oxide crystals again.
Owner:四川建志科技有限责任公司

Heavy metal sewage treatment agent

The invention relates to a heavy metal sewage treatment agent which is prepared from dodecyl diethylene triamine, dimethyl diallyl ammonium chloride, acrylamide, dibenzoyl peroxide, powdered activated carbon, ethylene diamine tetraacetic acid, tert-butylamine, carbamate, dithiocar-bamate, thiocarbamic acid ester, starch, cellulose, water soluble starch xanthate ester, sodium silicate, potassium peroxodisulfate, sodium hydrosulfite, strong base and water. The heavy metal sewage treatment agent disclosed by the invention is formed by being modified with a high-molecular compound; the mixture contains a plurality of active groups which can be complexed, chelated, absorbed and exchanged with heavy metal, so that heavy metal ions in the aqueous solution can be removed; the heavy metal sewage treatment agent has good removal effect on heavy metal ions, the removal rate is above 97%, and furthermore, the heavy metal sewage treatment agent has stronger Ca2+ and Mg2+ resistant capability; the removal rate of cadmium-containing sewage is 99.8%, which meets the national emission standard; and the removal rate of chromium-containing sewage is above 99.6%.
Owner:江西省恩皓环保有限公司

Shot blasting machine for removing metal edges and corners

The invention aims to provide a shot blasting machine for removing metal edges and corners. The shot blasting machine for removing the metal edges and corners structurally comprises a support, a safety door, a hinge, a base, a left rotary plate, a left bearing pedestal, a first convex through hole, a left bearing, a left plug, a left short shaft, a hexagonal hopper, a feeding inlet, a bolt hole, ahopper cover, a bolt, a right rotary plate, a right bearing pedestal, a second convex through hole, a right short shaft, a right bearing, a left connection shaft, a right connection shaft, a supportleft bearing, a support right bearing, a driven belt pulley, a transmission belt, a driving belt pulley, a motor, a right plug, a pressure hammer, a turnover fixing block, a rotary shaft, a switch, alower firing line, an external power line and an inner wire. The support and the base are connected in a welded mode; the support left bearing and the support right bearing are arranged at the centersof the two ends of the support separately; and the middle of the left connection shaft is installed in an inner hole of the support left bearing, and the right end of the right connection shaft is installed in an inner hole of the support right bearing.
Owner:高飞

Glass container water-milling edge polishing device capable of automatically feeding

The invention relates to an edge polishing device, and particularly relates to a glass container water-milling edge polishing device capable of automatically feeding. The glass container water-millingedge polishing device capable of automatically feeding is easy to operate, can improve the working efficiency and saves manpower. The glass container water-milling edge polishing device capable of automatically feeding comprises a bottom plate and a plurality of first supporting rods, wherein one side of the top of the bottom plate is connected with a first supporting frame; the plurality of first supporting rods are evenly connected to the middle of the top of the bottom plate at intervals in the circumferential direction; and a fixing barrel is connected between the plurality of first supporting rods. According to the glass container water-milling edge polishing device capable of automatically feeding, a rotating mechanism, a clamping mechanism, a moving mechanism, a feeding mechanism and a downward pressing mechanism cooperate with each other to polish edges of glass containers, and thus the effect of polishing the edges of the glass containers is achieved.
Owner:宁正虎

Preparation method of deep moisturizing and repairing hair mask

InactiveCN104116661ARestoring the endocrine systemRemove reachCosmetic preparationsHair cosmeticsMonoglycerideGlycerol
The invention relates to a preparation method of a deep moisturizing and repairing hair mask. The preparation method comprises the following steps: (1) mixing 50 parts of bis(aminopropyl)polydimethylsiloxane, 30-35 parts of behentrimethylammonium chloride, 10-12 parts of monoglyceride stearate and 8-10 parts of propylene glycol to form a component A; (2) mixing 15-35 parts of geranium extract and 15-35 parts of cactus extract to form a component B; (3) mixing the component A and the component B with 25-35 parts of deionized water, and adding 1-5 parts of cetyl alcohol, 2-5 parts of glycerin and 2-6 parts of dodecyl dimethyl betaine; (4) adding 0.2-0.5 part of preservative and 3-11 parts of moisturizing agent, and standing until the room temperature is restored, thus obtaining the deep moisturizing and repairing hair mask. The preparation method has the beneficial effects that the extract essence of the geranium and the wild cactus is adopted to effectively repair the scalp of which the oil is removed, deeply nourish the scalp, protect the scalp and restore the endocrine system of the scalp, thus radically achieving the aim of removing dandruff.
Owner:刘梅

Removing method for heavy metal Cr and/or Hg in soil

The invention relates to a removing method for heavy metal Cr and / or Hg in soil. Salix psammophila wood chips are taken and soaked in an acetate solution for 2-4 h firstly, the salix psammophila wood chips are taken out, the pH value of the salix psammophila wood chips is regulated to be neutral, and the salix psammophila wood chips are dried and sifted. Salix psammophila is planted on the soil polluted by the heavy metal Cr and / or Hg. The sifted salix psammophila wood chips are sprinkled in soil of an area at a horizontal distance of 20-40 cm with salix psammophila plant root systems. All plants of the salix psammophila are taken after the salix psammophila naturally grows to be mature, the salix psammophila is planted continuously till the contents of Cr and Hg in the soil reach the standard, and removing of the heavy metal Cr and / or Hg in the soil is completed. The salix psammophila is a tolerant species of the heavy metal Cr and / or Hg. In order to prevent the situation that the heavy metals are detained in the dead angles among the plants in the soil, the salix psammophila is adopted to be a main material and modified, and an adsorbing agent is obtained. By means of the adsorption of the adsorbing agent to the heavy metal Cr and / or Hg, transferring and transforming of the heavy metals are strengthened, and removing of the heavy metal Cr and / or Hg in the soil is achieved.
Owner:YULIN UNIV

A new type of high-speed high-strength paper tube glue and its preparation method

The invention discloses a novel high-speed high-strength paper tube adhesive and a preparation method thereof. First, water is added into a reaction kettle, kaolin and polyvinyl alcohol are added in a stirring state, and then a dispersant is added, the stirring is continued to raise the temperature, and a mixed solution is obtained by heat preservation; Add hydrochloric acid to adjust the pH value, then add formaldehyde to react, observe the reaction situation until the glue separation phenomenon occurs, immediately add ammonia water to adjust the pH value, then add the cornstarch that has been stirred and dissolved in advance, and turn on the cooling water to cool down after keeping warm to obtain polyvinyl formal glue Add the pre-dissolved boric acid + borax aqueous solution dropwise to the reaction kettle, add water to adjust the solid content after the dropwise addition, continue to cool down, then add dilute hydrochloric acid to adjust the pH value, and finally add defoamer, antiseptic and bactericide and cool to obtain a new high-speed High-strength paper tube glue; the paper tube glue prepared by this method can greatly improve the production efficiency of the tube coiler, improve product quality, reduce the "tube holding" phenomenon that occurs during paper tube production, and completely remove the residual formaldehyde in the glue.
Owner:YUEYANG FOREST & PAPER CO LTD
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