55results about How to "Remove reach" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.