90results about How to "There is no secondary pollution problem" patented technology

The invention discloses a method for purifying air by combining adsorption and in-situ heat catalytic oxidation regeneration. The method uses a porous material with adsorption and catalysis functions and a porous material with protective adsorption to adsorb low concentration of formaldehyde and benzene series in the air; when the adsorption of the porous material approaches to saturation, electrical heating is started to activate the catalytic activity of the porous material with the adsorption and catalysis functions, thereby catalytically oxidizing the formaldehyde and the benzene series which are adsorbed on the surface of the porous material into carbon dioxide and water; at the same time, the adsorption capability of the porous material is regenerated; the regenerated porous material is reused for adsorption; thus air purification can be realized through the circulation. The method has the advantages of high efficiency, energy conservation, low cost, no secondary pollution and so on. The method is suitable for purifying air containing the low concentration formaldehyde and the benzene series in a building, a cabin or other restricted spaces.

The invention relates to a cyclic regeneration flue gas desulfurization method using magnesium compounds and ammonia. Firstly, the magnesium compounds and ammonia which is used as desulfurizer is made to be seriflux after mixed with water, and then is send to recycling tank and then to the thionizer using seriflux pump to absorb the sulfur dioxide therein via the contact with flue gas to get the purpose of desulfurization purification of the flue gas. Part of the desulfurization solution is drawn off and regenerated using ammonia or ammonium salt when the PH of the seriflux after absorbing the SO2 is low than 6.2. Regeneration uses the method of direct regeneration or oxydizing regeneration, and the precipitate such as magnesium sulphites, magnesium hydroxide or magnesium carbonate get after regeneration can be periodic duty. After concentrating crystallization, the ammiaonia sulfate of liquid phase can get the ammonium sulphate crystals, and is also made to be a composite Crystals of ammonium sulphate and magnesium sulfate. The invention reduces the desulfurization cost without secondary pollution at the precondition for ensuring the effect desulfurization of flue gas.

A method for preparing a green and high-efficiency composite flocculant, which uses plant fibrous waste and inorganic aluminum salts as raw materials, uses sodium hydroxide as an alkalizing agent, chloroacetic acid as an etherifying agent, and uses inorganic aluminum salts as a matrix basic material. Composite flocculant composed of natural organic matter and inorganic aluminum salt, the steps are as follows: 1) alkalinize plant fibrous waste with sodium hydroxide solution; 2) add chloroacetic acid aqueous solution for etherification; 3) finally add inorganic aluminum salt aqueous solution for Composite reaction to obtain a gray-brown liquid composite flocculant. The advantages of the present invention are: good flocculation effect, no secondary pollution, good ecological safety; simple preparation method, mild reaction conditions, easy to scale up to realize industrial production; good economic performance, low cost, wide source of synthetic raw materials, conforming to circular economy, Requirements for clean production; a wide range of applications, suitable for a variety of industrial wastewater and domestic wastewater, and even industrial water supply, and can further expand the scope of use by adjusting the formula ratio.

The invention relates to a continuously feeding and discharging dynamic dry method anaerobic fermentation apparatus and a method thereof. The apparatus is characterized in that a horizontal type rotating-drum silo accommodating anaerobic fermentation materials can be remained sealed and continuously fed and discharged when rotating. Adjustments of anaerobic fermentation parameters such as premixing of raw materials and anaerobic fermentation inoculums, temperature, water content, pH value, etc. are finished at the same time. When being used in producing biogas, the apparatus is advantaged in that secondary pollution problems are not existed because of no biogas slurry; anaerobic fermentation parameters are easy to control; and that the apparatus produces the biogas uniformly and is suitable for industrialization of the biogas; Materials are remixed continuously in a reactor and in a dynamic anaerobic fermentation state, so that the apparatus has high gas yield and occupies small area.

The invention relates to a ceramic membrane chemical cleaning system and method which are used for cleaning a ceramic membrane in a water treatment system. The chemical cleaning system comprises an online cleaning part, wherein the online cleaning part comprises a dosing pump and a sucking pump; the dosing pump is coupled onto the ceramic membrane arranged in a membrane pool by virtue of a pipeline, so as to inject a cleaning liquid into the ceramic membrane; the sucking pump is coupled onto the ceramic membrane by virtue of a pipeline, so as to discharge water from a back absorption membrane of the ceramic membrane; and the cleaning liquid on the ceramic membrane is discharged into the membrane pool in a sucking process. The system and method which are provided by the invention can be used for solving the problems of pollution of the ceramic membrane in a water treatment process, production of secondary pollutants by the cleaning liquid in a membrane cleaning process, secondary treatment of the membrane cleaning liquid, and the like.

The invention relates to the field of crude oil processing, in particular to an oil product desulfurizing agent and a desulfurizing method thereof. Adsorption substances with high adsorption capability, such as molecular sieves, active carbon, active coke, natural zeolite, kaolin and bentonite are mixed according to a certain proportion to form a composite adsorption agent; sulfur-containing substances in oil are adsorbed and cleared under certain reaction conditions. The oil product desulfurizing agent has the beneficial effects that the consumption of the desulfurizing agent is small; the repeated utilization can be realized; the desulfurizing agent can be easily prepared; the price is low; raw materials can be favorably saved; the operation cost is reduced; a desulfurizing product can be recovered, and can be cyclically used after being treated; the technology is verified; the process is very simple; the operation is easy; a removed sulfide can be utilized; the secondary pollution problem does not exist; the desulfurizing efficiency of the composite adsorption desulfurizing agent is high; various sulfur-containing substances in the oil can be removed.

The invention belongs to the technical field of ecological planting of astragalus membranaceus, aims to solve the problems about cultivation of the astragalus membranaceus and improvement of quality,and provides an astragalus membranaceus seed-dressing agent and a method for promoting growth of astragalus membranaceus and accumulation of astragalus root flavonoids compounds of the astragalus membranaceus seed-dressing agent. The astragalus membranaceus seed-dressing agent is prepared by fermenting a Pseudomonas poae strain KSC02. The specific preparation method comprises the steps of preparing the strain KSC02 into a seed culture, connecting the seed culture into an LB liquid medium, carrying out shake cultivation at the temperature of 28 DEG C and at the speed of 180 rpm for overnight, centrifuging the culture, and collecting strain precipitates; and washing the strain precipitates twice with 300 mM MgCl2, then settling a suspended strain in a MgCl2 solution, adjusting OD600 to be 1.0 to prepare the seed-dressing agent, and storing the seed-dressing agent at the temperature of 4 DEG C for subsequent use. The yield and quality of the astragalus membranaceus under a stress condition are improved, the astragalus membranaceus seed-dressing agent is expected to be developed into green pesticide, and double effects of improving the quality and yield of medicinal materials and reducing chemically synthesized pesticide and fertilizers are achieved.

The invention discloses a plasma electro-discharge reactor for non-carbon absorbent regeneration. The plasma electro-discharge reactor comprises a bracket, wherein a reaction sleeve in which a cavity is arranged is arranged in the bracket; an upper electrode and a lower electrode are respectively arranged on the upper side and the lower side of the cavity of the reaction sleeve; an upper air inlet and a lower air outlet are respectively formed in the upper end and the lower end of the reaction sleeve, and penetrate through the side walls of the reaction sleeve to be communicated with the cavity of the reaction sleeve; a high voltage terminal interface is formed in the upper end of the bracket, and is connected with the upper electrode; an earthing terminal interface is formed in the lower end of the bracket and is connected with the lower electrode. The bracket is the stainless-steel bracket made of stainless-steel material; the reaction sleeve is the quartz glass sleeve which is unsealed at the upper end and the lower end and is made of quartz glass material; a seal cover and a base which are made of polytetrafluoroethylene material are respectively arranged at the upper end and the lower end of the quartz glass sleeve for sealing; a fluoro rubber seal ring is arranged between the quartz glass sleeve and the seal cover as well as between the quartz glass sleeve and the base for sealing; the upper air inlet and the lower air outlet penetrate through the seal cover and the base respectively, and then are communicated with a sealed space formed by the quartz glass sleeve, the seal cover and the base.

The invention relates to a pretreatment method of two-stage enhanced coagulation deoiling for coal chemical industry wastewater, comprising the specific steps: (1), first-stage coagulation and bouncing treatment: introducing effluent of an oil separation tank into a first-stage coagulating tank, adding an inorganic polymeric coagulant into the first-stage coagulating tank to form small coagulations, adding an organic polymeric coagulant to enlarge the coagulations, and charging the effluent of the first-stage coagulating tank into a bouncing tank for oil-water separation; (2), second-stage coagulation and gas floatation treatment: introducing effluent of the bouncing tank into a second-stage coagulating tank, adding an inorganic polymeric coagulant and an organic polymeric coagulant successively into the second-stage coagulating tank, charging effluent of the second-stage coagulating tank into a gas flotation tank, and carrying out second-stage enhanced coagulation deoiling treatment by means of gas flotation in the gas flotation tank so that the effluent of the gas flotation tank is lower than 80-100 mg/L and adapts to subsequent biochemical treatment. Compared with the prior art, the method has the advantages such as good deoiling effect, good operation stability and low treatment cost.

The invention provides silicification modified zero-valent iron. The surface layer of the silicification modified zero-valent iron is a silicate-substituted silicon-containing oxide layer, and the silicification modified zero-valent iron is obtained through the following method that soluble silicate and micron iron powder serve as raw materials and are mixed in proportion, ball milling is conducted in the inert gas atmosphere, and the silicification modified zero-valent iron is obtained. The silicon-containing precursor and the micron zero-valent iron are mixed in proportion and then modifiedby adopting a mechanochemical way, and the obtained silicification modified zero-valent iron can be used as a sewage remediation agent, an underground water in-situ injection material and a permeablereactive barrier filling medium and is suitable for remediation and treatment of heavy metal polluted environments. Green silicate is used as a silicon source to perform surface silicification modification on micron zero-valent iron, operation is simple, cost is low, large-scale production is facilitated, and the prepared silicified zero-valent iron is good in dispersity, high in reduction activity and high in recycling performance and can be used for treatment of water and soil polluted by various heavy metals.

The invention relates to an incineration treatment method of nitrile-containing waste residues, and belongs to the technical field of treatment of hazardous wastes. According to the incineration treatment method of the nitrile-containing waste residues, a high temperature reclamation furnace is utilized, the nitrile-containing waste residues are subjected to harmless treatment through processes like batching, mixing, feeding, incineration and flue gas purification, treated slag is utilized as aggregate for preparing cementing materials, reduction, harmlessness and resource purposes of the nitrile-containing waste residues are achieved, a high temperature incineration treatment technology is mature, the industrialized operation effect is stable, and the flue gas standard reaches the national flue gas emission standard (GB18484-2001).

The invention discloses a method for harmless treatment of waste diatomite containing sodium thiocyanate. The method comprises the following steps: mixing a raw material of waste diatomite with water to produce slurry with stirring; spreading the slurry on a filter belt fabric for continuous conveying and at the same time spraying water on the slurry to wash the slurry; keeping the space below the filter belt fabric vacuum and collecting the filtrate sectionally. The amount of water used for treatment is no more than four times of that of the diatomite. The content of sodium thiocyanate in the treated waste diatomite is less than 0.1 percent, and the treated waste diatomite can be reused in the system as a filter aid or used as a building material, a road bed material and so on. Compared with the prior process such as a methanol method, the method of the invention has the advantages of avoiding secondary pollution, and saving investment, transportation cost and water, along with simple and easy-to-implement process, a content of residual sodium thiocyanate less than 0.1 percent, low energy consumption, and suitability to mass production.

The invention provides a method of utilizing nano titanium dioxide to remove mercury ions in wastewater. The method includes: adding nano titanium dioxide into mercury-containing wastewater; adjusting pH value of the wastewater to 3-8 to enable nano titanium dioxide to remove the mercury ions in the wastewater through adsorption action. Grain diameter of nano titanium dioxide is one of 100nm, 5nm and 25nm, and optimal adding quantity of nano titanium dioxide is 2.0g.L-1 for nano titanium dioxide of 100nm in grain diameter, 7.5g.L-1 for nano titanium dioxide of 5nm in grain diameter or 10.0g.L-1 for nano titanium dioxide of 25nm in grain diameter. An optimal scheme includes that solution pH is equal to 8.0, adding quantity of TiO2 of 100nm is 2.0g.L-1, concentration of initial Hg2+ is 25g.L-1, and adsorption is performed for 10 minutes. Under the condition, Hg (II) removal rate is 99.9%.

The invention relates to a method for purifying trifluoro-dichloroethane, in particular to a purifying method adopting photo-catalytic oxidation. Oxygen is bubbled into a reaction vessel, under the ordinary pressure, the photo-catalytic oxidation is carried out on the trifluoro-dichloroethane containing hexafluoro-chlorobutylene, under the photo-catalytic oxidation, the hexafluoro-chlorobutylene is oxidized into a substance A, the reaction can be carried out in the gas phase or the liquid phase, and the molar ratio between the oxygen and the hexafluoro-chlorobutylene is 1-5:1. Under the situation of the method, hexafluoro-chlorobutylene which is a toxicity controlled substance can be rapidly oxidized into the substance A, and the substance A is safe, reliable, free of toxicity and capable of being recycled after analysis. Hazardous substances are not generated in the whole production process, and the method is green and environmentally friendly.

The present invention discloses a laser-induced breakdown spectroscopy based device for measuring seawater quality and metal element. The device includes a laser, a sample compartment, a control circuit, fibers, a spectrometer and a computer. The method is as below: first subjecting a tested sea water sample by an autosampler system for precise titration; then drying the sample by a heating and drying unit; rotating to a measuring position by an automatically rotating tray; and finally conducting spectral measurement on the sample with a graphite matrix by using laser-induced breakdown spectroscopy. The device has the advantages of high detection speed, high sensitivity, simple operation, no complicated process on tested water sample, no chemical reagent and no secondary pollution, and can simultaneously achieve on-line measurement of continuous water quality and multiple metal elements.

The invention provides a combined hydrogen production catalysis recovery resource device, belonging to the purification device used for treating environmental pollution. The combined hydrogen production catalysis recovery resource device comprises a flue gas cooling tower, a deduster, a purifier, a hydrogen production device and a recovery device which are connected with each other by pipelines. The purifier comprises a semiconductor purifier and a plasma purifier. The lower end of the flue gas cooling tower is provided with a water storage pool and the upper end thereof is provided with a flue gas passage; the outlet of the flue gas passage is connected with the deduster; the outlet of the deduster is connected with the semiconductor purifier; the gas pipe of a hydrogen storage bottle is connected into the semiconductor purifier; the outlet of the semiconductor purifier is connected with the plasma purifier which is connected with the recovery device. The combined hydrogen production catalysis recovery resource device has the advantages that after the hydrogen is prepared, the photoelectric destroying, degradation, transferring on multiterm pollutant are carried out by combining the hydrogen and a catalyst, and the reaction speed is fast, the destroying efficiency of pollutant molecule is high; the device has extremely great advantage on the pollutants which have large disposal quantity and low content and are difficult to be degraded; the hydrogen preparation device prepares the hydrogen by organic matter sewage, wastes no resources, causes no secondary pollution, and reduces the resource consumption in the disposal process.

The invention discloses a method for removing organic micro-pollutants from drinking water by using a persulfate reinforced iron salt coagulation process, wherein the method comprises providing to-be-treated water, coagulating, treating in a precipitation pool, treating in a filtering pool, sterilizing, conveying into a clear water pool, and conveying to users, wherein an iron salt coagulant and apersulfate solution are simultaneously added to perform coagulating, and the to-be-treated water is the influent of tap water plants and sewage treatment plant or industrial wastewater treatment effluent. According to the present invention, the method solves the problem that the traditional drinking water treatment process cannot effectively remove organic micro-pollutants; compared with the existing system for degrading organic pollutants with persulfate, the method of the present invention has advantages of no requirement of additional energy sources, activating agents or accelerants, simple operation, no requirement of additional equipment, low treatment cost, no secondary pollution and the like; after municipal sewage or industrial wastewater is subjected to conventional treatment, deep treatment can be performed by using the method of the present invention; and the method has characteristics of good effluent quality, safety and reliability.