1022 results about "Granular activated carbon" patented technology

The gas adsorption sheet of the present invention has a granular activated carbon-containing sheet comprising a granular activated carbon having an average particle diameter of 60 to 600 mum, a supporting fiber for fixing the granular activated carbon in contact with it, and an adhesive fiber which mainly contributes to shape retention. An air-purifying filter of the present invention is obtained by forming the gas adsorption sheet into a shape of pleats or wave. A method for producing a gas adsorption sheet of the present invention comprises a step of forming a granular activated carbon-containing sheet by using an aqueous slurry containing a granular activated carbon, a supporting fiber and a water-swelling adhesive fiber.

An odour adsorbing or deodorizing filter which comprises a matrix or substrate impregnated with a mixture of particulate chemically modified activated carbon and particulate activated carbon, together with a binder. The filter may be incorporated into an ostomy collection bag, wound dressing, respirator, air conditioning unit or the like.

The invention relates to a granular activated carbon filler for paper mill sludge and a preparation method thereof. The preparation method comprises the following steps: mixing 70-90 parts by weight of anhydrated paper mill sludge and 10-30 parts by weight of bentonite, performing granulation in a granulator, drying at room temperature, performing carbonization of the raw balls at a low temperature, modifying the carbonized material balls with hydrochloric acid, and activating the balls in an activation furnace. The sludge granular activated carbon filler prepared by the invention has the characteristics of large specific surface area, developed pores, high intensity, and the like. Fillers sintered at different process conditions can be respectively used as reactor fillers for sewage treatment, biological aerated filters, fluidized beds, and the like, have wide application range and low cost.

The invention relates to a treatment method and a device for refinery sewage. The refinery sewage is sent into an electrolytic catalysis oxidation reactor which is provided with an anode, a cathode and solid catalyst particles, wherein, the lower part of the reactor is provided with an oxygenation aeration device, the solid catalyst particles are filled between the anode and the cathode, and the solid catalyst particles adopts particle activated carbon loaded with metals having catalytic and oxidation function. The effluent of the electrolytic catalysis oxidation can be further treated by adopting an activated sludge process. The method is used for treating high-concentration salt-containing mixed wastewater such as the draining water of a refinery electrical desalting unit, the alkali washing waste alkali liquid of oils, liquefied petroleum gas and dry gas, and cutting water in an oils tank farm, and the like, the wastewater after treatment satisfies the requirement of direct discharging, thus alleviating impact on a wastewater treatment plant. The method put forward by the invention has the advantages that high-concentration wastewater can reach disposable treatment standard and does not need any dilution biochemical treatment, treatment effluent is not polluted secondarily by metal ions, and investment and running cost are lower, and the like.

A gas adsorption material containing a desired quantity of gas is placed in a pressurized container along with a product to be dispensed, and as pressure in the container is depleted during use, stored gas is released into the container to maintain pressure in the container within a predetermined range. The material may be in contact with the product, or it may be isolated from the product, and is known as a pressure swing adsorption (PSA) system, wherein adsorption of gas into the material occurs at a high pressure, and desorption of gas from the material occurs at a low pressure. Such devices are capable of storing under pressure a volume of gas 18 to 20 times the volume of the material. A preferred adsorbent gas storage material is granular activated carbon, or a carbon fiber composite molecular sieve (CFCMS). Other materials, such as zeolite, starch-based polymers, activated alumina, silica gel, and sodium bicarbonate, or mixtures thereof, may be used, although they generally are not as effective as activated carbon. The adsorbent material may be in granular, powdered, or pellet form, or a mass of the material may be formed into variously shaped cohesive bodies, such as balls, tubes, cubes or rods, or sheets or screens which may be flat or curved or folded into various shapes, such as, for example, an accordion-like fold.

The invention discloses a method for preparing a bioactive filler through immobilization of an anaerobic ammonia oxidizing bacterium, and belongs to the field of water treatment. The active filler is prepared by the following steps of: grinding active carbon, soaking in an anaerobic ammonia oxidizing bacterium liquid culture medium, and preparing an embedding solution from polyvinyl alcohol, calcium carbonate and condensed anaerobic ammonia oxidizing bacterium liquor in proportion; mixing and uniformly stirring the prepared embedding solution with soaked granular active carbon, and implementing immobilization through boric acid to finish cross-linking immobilization, thereby obtaining the active filler. The bioactive filler, after being cultured for 2 weeks, can recover anaerobic ammonia oxidizing activity. The bioactive filler disclosed by the invention is good in settlement performance and high in mechanical strength, and can achieve a micro-expansive state in an upflow biofilter.

The invention relates to a method for treating salt-containing sewage. The pH value of the salt-containing sewage is adjusted to between 8 and 12, the salt-containing sewage is biochemically treated by an activated sludge process, the effluent after the activated sludge process treatment is treated by an ozone-catalytic oxidation process adopting a solid catalyst, and the effluent after the ozone-catalytic oxidation process treatment is discharged through a biofilter; and in the ozone-catalytic oxidation process adopting the solid catalyst, the solid catalyst is granular activated carbon loaded with an active component which is one or more of tin, copper, manganese, titanium, cobalt, vanadium and nickel. The method can effectively purify the sewage which has high salt content and is refractory to biodegrade, and the effluent after treatment has the COD of less than or equal to 50 mg/L and the NH3-N of less than or equal to 8 mg/L, so that the strict sewage discharge standard of developed regions is met. The method has the advantages of simple treatment process, no need of sewage dilution, clean and clear effluent after treatment and realization of direct standard discharge.

An allantoin and the component containing said allantoin are extracted from cistanche through separation with macroreticular adsorption resin and granular activated carbon. Said allantoin can be used to decrease blood fat.

The invention relates to the field of drinking water treatment, in particular to a reaction device for deep treatment of drinking water and a method for deep treatment of the drinking water by a water factory. In order to realize the goal of transforming the conventional drinking water treatment process into the deep treatment process, the reaction device and the method adopt the scheme that (1) a static mixer and a coagulation reaction pool are not changed; (2) a sedimentation pool is transformed into an ultrafiltration membrane pool; (3) a medium water pool and a lifting pump used for waterlifting are additionally arranged at the back end of the ultrafiltration membrane pool; (4) a main ozone oxidization pool is in additional arrangement; and (5) an original sand filter pool is transformed into a particular active carbon filter pool. The coagulation and the ultrafiltration are combined, particular colloid and macromolecular organic matters in the water are removed, difficult-to-degrade pollutants are damaged through ozone oxidization, in addition, the macromolecular organic matters are converted into middle and small molecular weight organic matters, and organic matters and pollutants such as ammonia nitrogen and the like in the water are further reduced through the absorption of particular active carbon and the biological degradation of microbes grown on the surface.

The invention discloses a reactor for photoelectrocatalysis degradation of organic compounds using a rotary table supported with a catalyst, and a method for degrading the organic compounds by the reactor. The reactor comprises a rotary table supported with a photo-electro catalytic activity catalyst as the anode of the reactor, a motor driving the rotary table to rotate, a conductive granular activated carbon which can electrically catalyze the oxygen to generate hydrogen peroxide as the cathode, an ultraviolet or visible light source arranged in the reactor. The hydrogen peroxide generated from the activated carbon cathode forms hydroxyl radical under the action of the ultraviolet and degrades the organic compounds around both the anode region and the cathode region; the application of the rotary table avoids the light adsorption of the solution and accelerates the transfer of oxygen in the solution, which obviously improves the catalysis degradation efficiency of the refractory organic compounds.

A two-stage process for reclaiming the waste alkaline solution discharged by octanol synthesizing system includes "after-heat self-extracting" and "activated carbon adsorption" stages, that is, usingthe afterheat and inorganic acid to acidify the waste alkaline solution, extracting the organic components from waste solution by 2-ethylhexanol as the product of said octanol synthesizing system, adsorbing the residual phase by granular activated carbon, neutralizing by alkali, biochemical treating, and regenerating the used activated carbon. Its advantagesa re high effect etc.

A filter bag for use in a liquid filtering system is provided. The filter bag comprises a filtration layer. The filtration layer is defined by one or more filter mediums. The filter mediums can be composed of an adsorbent material disposed between two thin wall substrates. The adsorbent material can be a granular activated carbon. The thin wall substrates can be selected to be highly porous thin wall substrates. The filter bag can further comprise one or more diffusion mediums. The diffusion mediums can be defined by a woven or a non-woven mesh material. The mesh material can be selected from a suitable material that is temperature and fluid compatible with the filtering application to be carried out. The filter bag can include alternating layers of medium having one or more filter mediums and one or more diffusion mediums.

The invention is directed to methods for improving the DOM uptake of granular activated carbons and the carbons formed according to the methods. The methods include treating starting materials so as to provide a combination of physical and chemical characteristics favorable for DOM uptake. Particular methods utilized depend upon the characteristics of the starting materials but generally include at least one of: increase in surface area of the materials found in pores greater than 1 nm; increase in overall basicity of the materials; and impregnation of the materials with an iron species. The processed materials exhibit improved uptake of DOM from natural waters as compared to previously known GAC materials.

The invention discloses a filtering material, which more particularly relates to a material of an air filter applied to a central fan system; the material mainly includes an upper layer of non-woven fabrics and a lower layer of non-woven fabrics which are taken as base material as well as one or a plurality of composite layer(s) that is/are compounded between the upper and lower layers of non-woven fabrics; the material is characterized in that the composite layer(s) is/are composed of a granular activated carbon layer which is wrapped between two layers of nemaline cementing compound, and the granular activated carbon layer is formed by spreading independent activated carbon granules; the filtering material not only is not only efficient and has low resistivity, but also maintain the adsorption performance of the original activated carbon; furthermore, the hardness and stiffness of the general filtering material used for ventilation are kept, and the humdrum form of a chemical air filter is changed, so that the filtering material has the form of the general filtering material used for ventilation.

A pelletized activated carbon and canister capable of reducing the amount of fuel gases evaporated and emitted into the atmosphere when a vehicle is stopped for a long time. A method for preparing the pelletized activated carbon including adding a binder and water to a powdery or granular activated carbon where the binder includes a cement (A) and at least one of a bentonite-based compound, a cellulose-based compound, and a polyvinyl alcohol-based compound; and the cement (A) is 30% by weight or more of the weight ratio of the solids; further including mixing with water to produce pellets of activated carbon. Pelletized activated carbon can be obtained by further hardening, drying, and cooling.

The invention discloses a reverse osmosis water purifier. The water purifier comprises a water circuit device and an electric circuit device, wherein the water circuit device comprises a municipal tap water inlet, a first-level filter core, a second-level granular activated carbon filter core, a third-level filter core, a booster pump, a fourth-level reverse osmosis component and a fifth-level post coconut shell activated carbon filter core which are sequentially connected; a water inlet electromagnetic valve is arranged on a pipeline between the municipal tap water inlet and the first-level filter core; a water tap outlet is provided with a magnetic switch; a concentrated water channel is connected to a tap water pipeline through a waste water ratio valve and a one-way valve which are sequentially connected; and a sterilizer is arranged between the coconut shell activated carbon filter core and a purified water outlet. The water purifier has the characteristics of preventing explosion and leakage, avoiding wastewater and ensuring drinking safety.

The invention relates to an advanced treatment and reusing method for wastewater from print, which is applicable to middle and small printing plants and comprises the following processes: (1) selecting appropriate biological suspended fillers; (2) laying a filter bed of granular activated carbon; (3) cultivating sludge strains with high efficiency; (4) selecting a support for a dynamic membrane; (5) forming the dynamic membrane, and (6) cleaning and regenerating the dynamic membrane. The advanced treatment and reusing method for wastewater from print has the advantages of simple equipment, compact structure, low investment cost, small operation expenses, large flux, good performance of pollution resistance and easy cleaning and regenerating; therefore, the advanced treatment and reusing method for wastewater from print is particularly applicable to advanced treatment of wastewater from print in middle and small printing plants, which can be reused in the cleaning technology.

The invention discloses a method for restraining the generation of manganous dithionate in the process of leaching sulfur dioxide gas out of pyrolusite, which comprises the following main technical measures: (1) pyrolusite pulp is prepared by stirring and mixing in the proportion that 100-500g of pyrolusite and 0.2-100g of granular active carbon are added into 1L of water; (2) in a synchronous reaction process of absorbing the sulfur dioxide gas by the pyrolusite pulp, desulphurizing and leaching manganese, the pH value of the pyrolusite pulp is controlled to be lower than 3.5 by blowing oxygen or air into the pyrolusite pulp. The method restraining the generation of the manganous dithionate does not need to extra consume sulphuric acid and guarantee an oxido-reduction potential by extra adjusting the concentration of Fe<3+>/Fe<2+>, is easy to meet the requirement of industrial process production and can guarantee the concentration of a manganese sulfate mother liquor.