37results about How to "Efficient removal ability" patented technology

The invention discloses a biomass-based nanometer lanthanum oxide dephosphorization composite adsorbent and a preparation method thereof. According to the composite adsorbent, biomass anion exchange resin is taken as a matrix, and nanometer lanthanum oxide is loaded on the biomass anion exchange resin; the load of the nanometer lanthanum oxide is 0.5 to 22.6 percent by weight percentage of lanthanum; the biomass anion exchange resin is alkali quaternary ammonium group-contained biomass anion exchange resin, and is prepared by performing aminated modification on a biomass material by taking N,N-dimethylformamide as solvent, epichlorohydrin as an etherifying agent and trimethylamine or triethylamine or urea as an aminating agent; the biomass material is selected from maize straw, soybean straw, cassava straw, rice straw, wheat straw, bamboo reed, saw dust or a mixture thereof. The composite adsorbent disclosed by the invention is low in cost and high in adsorption capacity.

The invention belongs to the technical field of medical detergents, and relates to a multienzyme cleaning solution suitable for machine-washable medical devices and a preparation method thereof. The multienzyme cleaning solution comprises the following ingredients by mass percent: 77-89% of water, 2-4% of protease, 1-3% of lipase, 1-2% of amylase or/and 0.5-2% of cellulose, 1-3% of low-foam high-efficiency surfactant, 0.5-1% of bactericide and 2-5% of chelating agent. As enzymes such as neutral protease, lipase, alpha-amylase and the like are composited and the function is mild, the multienzyme cleaning solution can be used for cleaning equipment and hand washing operation, is capable of rapidly removing the organic pollutants such as blood, fester and the like on medical devices, and has the advantages that no corrosion is caused, the foam is low, the biodegradation is easy, no residues exist, the cleaning effect is good and the like.

The invention relates to a method for producing sulfate radical free radicals to oxidize pollutants through in-situ electrocatalysis. The method comprises the steps: sulfate in wastewater is activatedin situ by an anode material with high oxygen evolution potential to generate persulfate radicals, the generated persulfate radicals are catalyzed into sulfate radical free radicals at a cathode material with electrocatalytic activity, pollutants in the wastewater are oxidized by the sulfate radical free radicals and the sulfate radical free radicals are converted into sulfate at the same time, the sulfate are activated at the anode material again, and the processes are repeated. Compared with the prior art, the method has the advantages that sulfate ions in the water body are used for generating the sulfate radical free radicals in situ to oxidize and remove the pollutants, oxidants (such as peroxymonosulfate and peroxydisulfate) do not need to be added, and the salt concentration of thewater body cannot be increased; the water pollution control technology is high in removal efficiency and small in secondary pollution, and has the characteristic of easiness in automation.

The invention relates to wikerhamomyces anomalus BT-1-1 and an application thereof. The wikerhamomyces anomalus BT-1-1 provided by the invention is used for preparing highly tolerant and highly adsorptive heavy metal lead and cadmium saccharomycetes microbial preparation. The wikerhamomyces anomalus BT-1-1 is prepared from the following steps: culture activation, saccharomycetes enlage cultivation, centrifugal separation, protecting agent preparation, protecting agent addition, freezing and drying and the like. The highly tolerant and highly adsorptive heavy metal lead and cadmium saccharomycetes microbial preparation has an efficient removal ability on heavy metals lead and cadmium, and is used as a fragrance producing strain for producing wine, feeds and the like, and is safe and reliable to eat.

The invention relates to a system device for treating sewage in an A/O vertical flow constructed wetland, which is characterized in that the system device comprises a pretreatment desilting basin and a multilevel vertical flow constructed wetland; an outlet of the pretreatment desilting basin is connected with an inlet of the multilevel flow constructed wetland; two neighboring levels of the multilevel flow constructed wetland are communicated; the first processing unit of each level is a hypoxia unit; the rest processing units belong to aerobic 'wet/dry' alternating running-state processing units; the last aerobic 'wet/dry' alternating running-state processing unit of each level is communicated with the oxygen-poor processing unit of which the last aerobic 'wet/dry' alternating running-state processing unit is arranged.The constructed wetland system can strengthen nitrogen and phosphorus removal capacity of water and has high efficiency, fast phosphorus removal speed, small covering area, strong resistance to shock load and long service life of the wetland.

The invention discloses an assembled type multiphase flow dynamic membrane sewage treatment integrated device which comprises a grating channel (1), a regulating reservoir (2), a sludge drying tank (9), a pre-denitration zone (3), an anaerobic zone (4), an anoxic zone (5), an aerobic zone (6), a settling zone (7), a draining channel (8), a first valve (12), a second valve (13), a grating, a lift pump (18), an ultraviolet disinfecting tank (10) and a rotary air blower (11), wherein the pre-denitration zone (3), the anaerobic zone (4), the anoxic zone (5), the aerobic zone (6), the settling zone (7) and the draining channel (8) are connected with each other in turn. The assembled type multiphase flow dynamic membrane sewage treatment integrated device can guarantee the strict anaerobic environment of the anaerobic zone, so that phosphor-releasing efficiency of phosphorus-accumulating bacteria in the anaerobic zone is greatly increased, the phosphor-absorbing efficiency in the aerobic zone is fully promoted and the efficient nitrogen and phosphor removal capacity of the assembled type multiphase flow dynamic membrane sewage treatment integrated device can be further realized.

The invention relates to a quaternary ammonium base-free cleaning solution. The cleaning solution is prepared from the following raw materials in percentage by mass: 1-20% of guanidine or guanidine derivatives, 1-20% of alkanolamine, 0.01-10% of a nitrogen-containing heterocyclic compound metal corrosion inhibitor and 60-99% of water. The cleaning solution disclosed by the invention does not contain quaternary ammonium base and easily-decomposed antioxidant metal inhibitors, has relatively high environmental stability, is capable of removing efficient copper surface organic residues and grinding particles , has relatively low copper corrosion rate and copper surface roughness, and does not generate adsorption on the copper surface.

The invention relates to an aerobic granular sludge stable operation process based on F/M regulation and control. A sequencing batch type bioreactor (SBR) is adopted as a testing device body, the height-diameter ratio ranges from 5 to 10, the volume interchange rate ranges from 30% to 70%, the operation cycle ranges from 4 h to 6 h, and the surficial gas velocity ranges from 1.0 cm.s<-1> to 2.5 cm.s<-1>. The F/M specific value of aerobic granular sludge in a reactor is controlled, the aerobic granular sludge even in size, excellent in sedimentation velocity, stable in structure and rich in flora is formed, long-term efficient and stable operation of the aerobic granular sludge process is achieved, and the problems that the structure of the aerobic granular sludge is prone to unstability in the long-term operation process, and functional bacteria are prone to running off are solved.

The invention discloses a method for removing halogenated organic pollutants in water by using metal ion doped Fe (OH) 2, which comprises the following steps: preparing a Fe < 2 + > solution and an alkali solution in an oxygen-free environment, slowly dropwise adding the Fe < 2 + > solution into the alkali solution, and standing to obtain a Fe (OH) 2 stock solution for later use; then preparing adivalent transition metal ion solution in an oxygen-free environment for later use; sequentially adding the Fe (OH) 2 stock solution and the divalent transition metal ion solution into a reaction container in an oxygen-free environment, and regulating the pH value in the reaction container to be neutral by utilizing hydrochloric acid to obtain a decontamination solution; and finally, adding the aqueous solution containing the halogenated organic pollutants into the decontamination solution, oscillating and mixing, and carrying out decontamination reaction to finish removal of the halogenated organic pollutants in the water. According to the method, Fe (OH) 2 and metal ions are used for forming a reduction system, HOCs can be completely dehalogenated in a short time, and the efficient removal capacity is achieved; and the method is simple and convenient, convenient to implement and cost-saving.

The invention discloses an efficient response optical coupling denitration catalyst and a preparation method thereof, and belongs to the technical field of blast furnace slag application. The preparation method of the product comprises the following steps: uniformly mixing the titanium-containing blast furnace slag with the rare earth element oxide, the transition metal oxide and a certain amount of sodium hydroxide, heating to melt, reconfiguring a silicate phase while solid-dissolving transition group elements into a perovskite phase, and stripping the silicate phase through acid leaching treatment, thereby finally obtaining the perovskite-based functional material. The obtained product is the optical coupling low-temperature denitration catalyst with efficient response activity. According to the catalyst prepared by the method disclosed by the invention, the removal rate of NOx can reach 100% and the N2 selectivity can reach 92% under a low-temperature condition (140 DEG C) in a manner of adding a light source, so that the denitration catalyst capable of efficiently responding under the low-temperature condition is prepared at low cost in a short process; and the method disclosed by the invention has great significance in high-added-value application of the titanium-containing blast furnace slag and continuous and efficient removal of NOx in industrial waste gas.

The invention discloses Bacillus sp. W15 capable of removing stink of sheep manure efficiently. The Bacillus sp. W15 is preserved in CCTCC, the preservation number being CCTCC NO: M2017786. The bacillus capable of removing stink of sheep manure obviously is screened from a content of an earthworm cavity, and the bacillus has obvious effects in sensory evaluation and repugnant substance content detection, so that the sheep cot environment is improved, and the bacillus has a wide application prospect in preventing health hazard of repugnant substance on human and animals.

A salt-tolerant denitrification bacterium using nitrite as a nitrogen source and application thereof, the invention relates to the field of environmental microorganisms, in particular to a salt-tolerant denitrification bacterium using nitrite as a nitrogen source. The invention aims to solve the technical problem that the denitrification ability of the existing denitrifying bacteria is inhibited by the salt, and the nitrite nitrogen in the saline wastewater cannot be removed. The strain is Pannonibacter phragmitetus F1, which is a plant-dwelling plant, and it is preserved in the General Microbiology Center of China Committee for the Collection of Microorganisms. The preservation date is March 25, 2019, and the preservation number is CGMCC No.17432. The strain can denitrify and denitrify under saline conditions. The bacterial strain of the invention is used for removing nitrite nitrogen pollutants in water bodies.