121results about How to "Solve the regeneration problem" patented technology

The related sealing-type CO2 laser tube comprises: a metal-plated full reflection mirror 1, a muffler 2 set in tube 4 to connect sheath 3 and tube 5, a gas storage sheath 3, a water cooling tube 4 set on top of a discharge tube 5 together in sheath 3, an output mirror 6 together with mirror 1 bonded on ends of laser tube ends by epoxy resin, the TiO2 photo catalyst 8 coated on inner wall of tube 5 and electrodes 7/9, and two electrodes 7/9 coaxial arranged on ends of tube 5. This invention is simple and convenient, prolongs product life time, reduces cost, and has well social and economic benefits.

A process for regenerating the used water glass sand used for metallic casting includes such steps as breaking, adding water, freezing at -1¿D-60 deg.C, dry regeneration while dusting and de-moistening.

The invention discloses a treatment method of heavy metal wastewater which contains high concentrated suspended substance. The method uses case collection sugar acidic solution as the heavy metal flocculant which can be settled when the pH value is 7-9 and can rapidly separate the suspended substance. The condensation of the heavy metal ion in wastewater can be reduced after being separated. And then, after the wastewater is adsorbed by fine particle case collection sugar, the wastewater can reach the discharge standard. At the same time, the saturated case collection sugar can be adsorbed and can be taken as the supplement heavy metal flocculant after being processed acidifying action. The treatment method has simple process which is convenient to be operated. The adsorption agent can be used for the second time, and the regeneration can be avoided.

The invention, belonging to the technical field of adsorption catalysis materials, discloses a carbon nanotube and {001}surface TiO2 microsphere composite material photocatalyst, its preparation method and application. The preparation method comprises the following steps: adding titanium tetrafluoride in water, fully stirring, and then adding nanotubes pretreated by acids, carrying out ultrasonicdispersion, carrying out hydro-thermal reaction in a teflon pot, collecting precipitates in the pot, cleaning in a centrifugal way, and drying to obtain the carbon nanotube and {001}surface TiO2 microsphere composite material photocatalyst. The photocatalyst has strong adsorption properties to volatile organic compounds and strong photocatalytic activity, so as to realize the integration of the absorption and photocatalytic oxidation of the volatile organic compounds, thus hydroxy radicals generated on the surface of the catalyst can be allowed to effectively mineralize and degrade the volatile organic compounds absorbed and gathered by the adsorption material in situ, and the reaction rate and efficiency of the photocatalytic oxidation of organic pollutants are greatly enhanced. The photocatalyst can be applied as an adsorbent or photocatalyst for the field of environmental protection.

The invention discloses a short-hole-channel ordered mesoporous silica-sulfur-indium-zinc composite photocatalyst as well as a preparation method and application thereof. The short-hole-channel ordered mesoporous silica-sulfur-indium-zinc composite photocatalyst is prepared through the following steps of mixing ethyl orthosilicate with ZrOCl2, zinc salt, indium salt and a reducing agent so as to obtain a mixture, in the presence of a surfactant, sequentially performing sol-gel treatment, hydrothermal treatment and alcohol ultrasonic treatment, performing sucking filtration, performing cleaning and performing drying. According to the photocatalyst, the integration of adsorption and photocatalytic oxidation is realized, the photocatalyst has high adsorption properties and high photocatalytic activity on volatile organic compounds (VOCs), and hydroxyl radicals produced on the surface of a catalyst can effectively degrade the VOCs adsorbed and enriched by materials in an in-situ manner, so that the reaction rate and the reaction efficiency of photocatalytic degradation on the VOCs can be substantially improved, the photocatalyst can be used as an adsorbent or the photocatalyst for organic contaminants in the field of environmental protection, and the photocatalyst has wide environmental protection application potential.

The invention discloses an integrated heat source tower heat pump device based on comprehensive utilization. The integrated heat source tower heat pump device based on the comprehensive utilization comprises a refrigerating agent loop, a solution loop and an air loop. Through control over a first electric three-way control valve, the ratio of solution, coming out from a finned tube exchanger, of a first solution pump to solution absorbed from a heat source tower is adjusted, so that control over the temperature of solution entering the finned tube exchanger is achieved. Therefore, adjustment of the dehumidification amount of air in the finned tube exchanger is achieved. According to the integrated heat source tower heat pump device based on the comprehensive utilization, heat released by super-cold refrigerating agent or overheated refrigerating agent is used for regenerating solution, and based on air closed circulation, high-efficiency regeneration of the solution of a heat source tower heat pump system is achieved, the problem of regeneration of the solution of the heat source tower heat pump system is thoroughly solved, safe reliability of the heat source tower heat pump system under various operation conditions is improved, and comprehension and high efficiency of the system are achieved.

The invention provides a demercuration and regeneration method for a copper-based demercuration adsorbent. The demercuration and regeneration method for the copper-based demercuration adsorbent includes the following steps that the used copper-based demercuration adsorbent and a catalyst are mixed and preheated, then mixed gas containing oxygen, hydrogen chloride and shielding gas is introduced, a demercuration reaction is carried out, and a solid mixture and desorbed mercury are obtained; the solid mixture is screened and ultrasonically washed, and a crude regenerated copper-based demercuration adsorbent is obtained; the crude copper-based demercuration adsorbent is dried and calcined, and the regenerated copper-based demercuration adsorbent is obtained. The catalyst contains chloride and silicon dioxide, or the catalyst contains sulfide and silicon dioxide. Based on the mass of the mixed gas being 100%, the mass ratio of hydrogen chloride to oxygen to the shielding gas is (5%-10%):(1%-2%):(88%-94%); the ultrasonic washing frequency ranges from 1 MHz to 1.5 MHz.

The invention relates to an activated bactericide for improving the activity of a biological membrane on filler in the water treatment as well as application of the activated bactericide in a contact oxidation process. The activated bactericide is characterized in that an activating agent is a mixed bacteria liquid comprising pseudomonas fluorescens accounting for 40-60 percent of the total bacterial count, 15-20 percent of bacillus subtilis, 15-30 percent of bacillus megaterium, 5-10 percent of bacillus pumilus and metabolite of a culture solution of the mixture. The concentration of the activating agent added into the treatment water is 10<-6>-10<-5>. A materializing sludge layer generated by the filler can be effectively desorbed, a novel materializing sludge layer can be stopped from forming, and the service life of the filler is prolonged to 3-5 years; the activated bactericide has a function of in-situ regenerating and activating an aerobic and facultative anaerobic microbe and restores the activity of the biological membrane, so that the dormant and inactivated biological membrane on the filler is activated and restored, a bacteria colony on a novel membrane is positioned in a high-activity excited state, and further the decomposition ability is improved; and after the activated bactericide is fed, the removal rate of effluent COD (Chemical Oxygen Demand) is improved bymore than one time compared with that of the condition that the activating agent is not used.

The invention provides a construction muck regenerated soil treatment technology. Before construction mucks are fed into a preliminary crushing device I to be subjected to primary crushing treatment,blocky sundries are picked out by operators. After being preliminarily crushed into to-be-treated materials with the diameter not exceeding the main crushing feed upper limit, the construction mucks fall onto a belt conveyor 2, the sundries are picked out manually, and steel bars are attracted out through an iron separator; then the materials are conveyed into a roller stone scrubber 3 through thebelt conveyor 2, water is added into the materials, and the materials are stirred, struck, ground and washed; in the stirring and washing process, blocky construction waste are struck and ground, hardened soil blocks can be crashed and pulverized, all residual soil and dust and water on the sundries are combined into slurry, and then the slurry and the blocky materials together are fed into a screening and treating device 4; after solid particles and the sundries are filtered out, the slurry goes into a sand washer to remove sand; the sand-removed slurry overflows and goes into a sedimentation tank 6, soil particles start to precipitate slowly along with slowdown of water flow; after a period of time, the soil precipitates and solidifies; through a slurry pump or other devices, the slurryis charged into a stirring machine 7 and is stirred together with organic materials and additives; after being stirred uniformly, the mixture is dehydrated and solidified through a dehydrating device8 to form finished planting soil.

The invention provides a heat-source tower heat pump system based on freeze regeneration and regeneration heat utilization. The heat-source tower heat pump system comprises a refrigerant circuit, a solution circuit, a vacuum maintaining circuit, a vapor circuit, a solution regeneration circuit and a cold and hot water circuit. The solution regeneration circuit comprises a vacuum freeze regenerator, an ice-solution separator, a heat regenerator, a second compressor and other devices. A dilute solution needing to be regenerated in a heat-source tower is sprayed into the vacuum freeze regenerator. Part of water in the dilute solution absorbs heat of the solution to be evaporated under a vacuum environment, the temperature of a residual solution is lowered to the freezing point of the solution, freezing is conducted and ice crystals are separated out, ice crystals are separated out through the ice-solution separator, a concentrated solution is obtained, and the solution is regenerated. Meanwhile, by means of heat released by condensation of vapor, the solution is heated, the reuse of vapor heat is achieved, the solution regeneration problem of the heat-source tower heat pump system is efficiently solved, and the comprehensive efficiency and safe reliability of the heat-source tower heat pump system under various running working conditions are improved.

The invention relates to a device which consists of corona discharge and chemical absorption and is used for removing gaseous harmful substances containing fluorine, chlorine, sulfur or nitrogen and organic gas such as hydrocarbon, alcohol and aldehyde from airflow. The method comprises the following steps that: gas to be processed is firstly guided into a reactor which consists of a corona discharge reaction area and a gas-solid absorption reaction area, so under the effect of the corona discharge non-balance plasma body, while the harmful gas is oxidized and decomposed, acid product in the product can be absorbed by solid absorbent inside the reactor, so the gas can be purified. The absorbent after being saturated is conveyed along a transmission belt to an absorbent pulp tank which is arranged on the lower part of the device, and the absorption layer on the transmission belt is washed and is reloaded with fresh absorbent to be sent back to the reaction area.

The invention discloses a regeneration method of a MnOx/TiO2 based low-temperature denitration catalyst. The regeneration method includes the following steps that high-pressure air is used for purging a catalyst monomer, then the catalyst is impregnated in deionized water under the action of ultrasonic waves to remove impurities and soluble substances, drying is performed, and then the obtained catalyst is put in an activation solution for activation treatment and then is sequentially subjected to microwave drying, calcination in a muffle furnace and ultraviolet irradiation treatment to obtain the regenerated SCR denitration catalyst. By means of the regeneration method, the regeneration problem of the deactivated MnOx/TiO2 based low-temperature denitration catalyst is solved, the MnOx/TiO2 based low-temperature denitration catalyst is applicable to catalysts deactivated to different degrees, and the denitration activity of the obtained regenerated denitration catalyst can be up to 97%. The using amount of the activation solution can be saved. Mn-Ti catalyst sol prepared by adopting a sol-gel method enables active components to be supported firmly, and the denitration effect is improved. In addition, the activity and poisoning resistance capacity of the regenerated catalyst can be improved by adopting the ultraviolet radiation treatment.

The invention provides a renewable spent lye filter device and a using method thereof. The filter device comprises a shell mechanism, a filter element component and a screen filter, wherein the shell mechanism is provided with a filter chamber; the filter element component comprises a filter element; the screen filter is installed in a preset position of the filter chamber and faces the filter element at intervals, so that a first filtering area and a second filtering area are formed in the filter chamber; large-particle impurities are intercepted in the first filtering area by the screen filter; the filter element is arranged in the second filtering area; particulate impurities are filtered by the filter element. The filter device has the beneficial effects that the filter capacity and filter precision of the spent lye are effectively improved and the activity of the lye is restored through multistage filtration of the spent lye, thus achieving the aims of effectively purifying and recycling the spent lye in wash bottles.

The invention discloses a method for treating landfill leachate tail water through magnetic carbon catalyzed ozonation, which belongs to the technical field of treatment of environmental waste. The method comprises the following steps: (1) biological treatment of landfill leachate; (2) preparation of a magnetic carbon catalyst; (3) catalysis of ozone for oxidation treatment; etc. According to the invention, the magnetic carbon catalyst is added, and adsorption performance and catalytic characteristics of the catalyst are fully utilized; therefore, under the synergism of adsorption and catalyzed ozonation, effluent reaches national discharge standards that COD is no more than 100 mg/L and chroma is no more than 40 times, and through utilization of the magnetic characteristics of a magnetic carbon material, the problems of separation, recovery and reutilization of the catalyst are overcome. The method provided in the invention can be popularized and applied in in-depth treatment of household garbage leachate tail water in town regions.