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

The present invention discloses an efficient ferrous sulfide / biological carbon composite material and a preparation method thereof, and applications of the ferrous sulfide / biological carbon composite material in repair of heavy metal pollution water bodies. According to the present invention, biological carbon is adopted as a carrier, a ferrous sulfate solution and the biological carbon are mixed, sodium carboxymethyl cellulose is added as a stabilizer and a dispersant, a sodium sulfide solution is added to the system in a dropwise manner under the nitrogen protection, and vigorous stirring is performed to make the generated ferrous sulfide nanoparticles uniformly grow on the surface of the biological carbon, such that the disadvantage that the ferrous sulfide nanoparticles are easily agglomerated is substantially improved so as to increase the effective contact area between the ferrous sulfide nanoparticles and the pollutant, and the adsorption ability and the oxidation reduction ability of the ferrous sulfide and the biological carbon are integrally combined so as to improve the pollutant removal ability; the preparation method has advantages of simple and rapid process, low production cost, environmental protection and no secondary pollution; and the efficient ferrous sulfide / biological carbon composite material can strongly repair the Cr(VI) polluted water body, can effectively reduce the biological toxicity of the Cr(VI) on wheat seeds, and has wide application prospects in the fields of repair of organic pollution and inorganic pollution in environments.

The invention provides a black and odorous water body treatment device. A nitrogen and phosphorus recycling principle of the prior art is brought into play sufficiently, an aeration blowing tank is adopted to carry out reoxygenation and denitrification synchronous treatment on a black and odorous water body, with the combination of aerobiotic, anaerobic and membrane treatment processes, nitrogen and phosphorus removal treatment on the black and odorous water body is carried out, meanwhile, synchronous removal and recycling effects on ammonia nitrogen are achieved, influence of the black and odorous black body upon ambient environments can be reduced, and certain economic values can be made.

The invention discloses an acidic cleaning agent and application thereof in cleaning of cooling fins of air conditioners of railway bullet trains. The acidic cleaning agent comprises the following components in percentage by mass: 1.0-5.0% of cleaning components, 1.0-3.0% of corrosion and scale inhibition components, 0.2-2.0% of surface active components, 0.5-1.0% of an auxiliary agent and the balance water; the cleaning components include inorganic acid and organic acid; the corrosion and scale inhibition components include aniline, urotropine and a dicarboxylation imidazoline derivative; the surface active components include cationic alkyl glycoside, lauryl polyoxyethylene ether sodium sulfate and polyol phosphate; and the auxiliary agent is a dispersing agent which is polyanionic cellulose sodium. The acid cleaning agent provided by the invention has the advantages of high efficiency, easiness in rinsing, low residue, high stability and the like when being used for cleaning the cooling fins of the air conditioners of the railway bullet trains.

The invention belongs to treatment methods of seawater algal pollution, and particularly relates to a modified clay composite material capable of efficiently removing microalgae red tide, a preparation method thereof and a method utilizing the composite material to remove ultramicro algae red tide. The modified clay composite material is inorganic polymeric flocculant modified clay synthesized by adopting sulfate as a polymerization bridge. When the composite material is used, quick removal of red tide can be realized by directly utilizing seawater as a dispersant, premixing to be turbid liquid of certain concentration and then spraying the turbid liquid onto the surface of an ultramicro algal red tide water body. The novel modified clay composite material has efficient removal capability to ultramicro algae and has good removal effect on common microalgae red tide.

The invention belongs to the technical field of high-toxicity pollutant treatment, and relates to a preparation method of a nano zero-valent iron composite material with superstrong reducibility and photocatalytic performance and application of the nano zero-valent iron composite material as a reducing agent and a photocatalyst to removal of organic and inorganic high-toxicity pollutants in a water body. The material is composed of a zero-valent iron core and a single crystal FeS1-x / Fe3O4 mixed shell. The preparation method is simple and green, and the utilization rate of raw materials is high. The core zero-valent iron is prevented from being eroded by water molecules and dissolved oxygen in water due to a good core-shell structure; a proper hydrophobic FeS1-x / Fe3O4 shell can be used forefficiently adsorbing and enriching pollutants in water; the good conductivity of the Fe3O4 shell ensures that electrons of the core zero-valent iron can be quickly transferred to pollutants adsorbedon the surface of the material. The material has the unique photocatalytic performance, and can accelerate reduction, oxidation and thorough mineralization of pollutants under irradiation of visible light or sunlight.

The invention discloses a method for quickly granulating aerobic sludge and belongs to the technical field of wastewater treatment. According to the invention, a system F / M ratio is controlled for boosting the quick granulating of the aerobic granular sludge and forming the granule sludge with high settling velocity and abundant microbial community structure. The method disclosed by the invention can solve the problem of long forming time of the aerobic granular sludge.

The invention relates to the field of sewage treatment, and discloses an activating and expanding culture system for sewage treatment active microorganisms. The system comprises a reactor main body, the reactor main body comprises a sedimentation tank, a primary activation tank and a secondary activation tank, the reactor main body is also provided with a monitoring probe, a heating and heat preservation device, a refrigeration device, an aeration device, a material storage tank, a feeding device and a single chip microcomputer control system; the monitoring probes are arranged in the first-stage activation tank and the second-stage activation tank and are used for monitoring temperature, dissolved oxygen and pH (Potential of Hydrogen); starting and stopping of the heating insulation device and the refrigeration device are adjusted by temperature parameter feedback; the aeration device is mounted at the bottoms of the primary activation tank and the secondary activation tank, and the start and stop of the aeration devices are adjusted by dissolved oxygen parameters; the storage tank is mounted at the tops of the first-stage activation tank and the second-stage activation tank; and the feeding device is arranged among the storage tank, the primary activation tank and the secondary activation tank. According to the invention, effective enrichment and proliferation of target microorganisms are realized through automatic adjustment of expanding culture conditions.

The invention discloses a preparation method of a porous hydrogel adsorbent based on astragalus mongholicus waste residue. The preparation method comprises the following steps: taking traditional Chinese medicine astragalus mongholicus waste residue as a precursor, performing NaClO2 bleaching, KOH alkali washing and high-power ultrasonic treatment to obtain a uniformly dispersed cellulose nanofiber precursor solution; adding the cellulose nanofiber precursor solution into a mixed solution of N-N'methylene bisacrylamide, acrylic acid and ammonium persulfate, uniformly shaking, and carrying out polymerization reaction at a preset temperature to form blocky gel; and washing the blocky gel, placing the blocky gel in a dimethyl sulfoxide solution containing epoxy chloropropane for reaction, transferring the reacted product into a sodium hydroxide aqueous solution containing triethylene tetramine for reaction, and finally obtaining the amino functional modified porous hydrogel adsorbent. The traditional Chinese medicine waste residues are subjected to resource utilization, and the synthesized gel adsorbent can be further applied to adsorption removal of heavy metals and is excellent in adsorption performance, low in cost, high in stability, high in ion interference resistance and good in reusability.

The invention discloses a method for quickly granulating aerobic sludge and belongs to the technical field of wastewater treatment. According to the invention, a system F / M ratio is controlled for boosting the quick granulating of the aerobic granular sludge and forming the granule sludge with high settling velocity and abundant microbial community structure. The method disclosed by the invention can solve the problem of long forming time of the aerobic granular sludge.

The present invention provides an Alcaligenes sp. strain HO‑1 with a preservation number of CGMCC No. 16549, which is isolated from a semi-short-path nitrification reactor for treating pig farm wastewater. The strain has been deposited in the General Microbiology Center of the China Committee for the Collection of Microbial Cultures on September 28, 2018, and the preservation number is CGMCC No.16549. Alcaligenes provided by the present invention can efficiently remove ammonia nitrogen, and can independently convert NH 4 + converted to gaseous nitrogen product (N 2 O, N 2 ). When treating ammonia-nitrogen-containing wastewater, it can realize the whole process of denitrification under a single strain and a single condition, which is more advantageous than the traditional biological denitrification process of aerobic nitrification-anaerobic denitrification in terms of operation and economic benefits. In addition, the strain has a wide range of C / N ratio, temperature, pH and dissolved oxygen adaptability, and can tolerate and remove high concentrations of ammonia nitrogen.

The invention provides a silver-based composite adsorbent for removing radioactive iodine, the silver-based composite adsorbent for removing radioactive iodine is spherical, and the silver-based composite adsorbent for removing radioactive iodine has a core-shell structure, the silver-based composite adsorbent for removing the radioactive iodine comprises a central core and a shell covering the surface of the central core, the central core is silver, the shell is a cationic polymer, and meanwhile, the invention further provides a preparation method of the silver-based composite adsorbent for removing the radioactive iodine. According to the silver-based composite adsorbent for removing radioactive iodine and the preparation method of the silver-based composite adsorbent, the surfaces of the silver nanoparticles are coated with the cationic polymer, so that the chemical stability of a silver nanoparticle adsorption material is effectively improved on the premise of keeping high adsorption performance on radioactive iodine; the preparation method of the composite adsorbent for removing radioactive iodine is controllable and high in efficiency.

The invention discloses a strain of Bacillus sp. W15 for efficiently removing the stench of sheep manure, which is preserved in the China Center for Type Culture Collection with the preservation number CCTCC NO: M 2017786. The present invention screens out a Bacillus strain that can significantly reduce the stench of sheep manure from the contents of the earthworm cavity, and the sensory evaluation and the detection of the content of the malodorous substance all show significant effects, which can improve the environment of the sheep house and prevent the malodorous substance from harming humans and animals. It has broad application prospects in health hazards.

The invention relates to a preparation method of an amyloid fiber iron oxide composite film and a method for purifying phosphate in tail water of a municipal sewage treatment plant. The invention uses sub-10nm iron oxide amyloid fiber composite adsorption material and natural diatomaceous earth as a supporting layer to prepare the composite amyloid fiber film by vacuum suction filtration. The temperature of phosphorus-containing polluted water is controlled at 5°C-55°C, the pH is controlled within the range of 3-10, P(Ⅴ)=2-50mg / L; it passes through the composite membrane at a flow rate of 0.1-5L / h, when phosphorus Ion pollution, water contains a lot of NO 3 ‑ , SO 4 2‑ 、CI ‑ When conventional anions compete, the phosphorous content of the effluent can be reduced below the safety standard (GB8978-2002, P<0.5mg / L) after being treated by the adsorption material of the present invention, and the effect is remarkable.

The invention discloses a preparation method and application of wild straw mushroom mycelium with the function of efficiently removing dyestuffs. The wild straw mushroom mycelium which cannot be artificially domesticated and cultivated at present is subjected to solid and liquid fermentation and cultivation. The culture conditions were optimized and controlled, and the mycelia obtained from the liquid fermentation culture were used in the study of dye removal, which showed that it had efficient dye removal ability, and the dye decolorization rate was close to 100% after two days. The straw mushroom mycelium of the invention has wide application research value and potential development value for dye removal in industrial production wastewater such as textile wastewater and papermaking wastewater.

The present invention relates to an abnormal Wickerham yeast (wickerhamomyces anomalus) BT-1-1 and its use. Abnormal Wickham yeast BT‑1‑1 of the present invention is used to prepare yeast microbial preparations with high tolerance and high adsorption of heavy metals lead and cadmium, which includes activation of strains, expanded cultivation of yeasts, centrifugal separation, preparation of protective agents, addition of Steps such as protective agent and freeze-drying. The present invention has high tolerance and high adsorption of heavy metal lead and cadmium yeast microbial preparation, which has high-efficiency removal ability for heavy metal lead and cadmium, and the abnormal Wickham yeast of the present invention is used as an aroma-producing strain for producing wine, feed, etc., edible Safe and reliable.

The invention discloses a preparation method of a load type nanometer zero-valent iron composite material. The preparation method comprises the following steps: a) preparing a micro / nanometer grade composite flower-shaped self-supported Mg (OH) 2 microballoon' b) dispersing it to iron / ferrous ion solution with certain concentration; c) dropwise adding sodium borohydride solution in the mixed solution, and restoring iron / ferrous ion at original site to prepare Mg (OH) 2 loaded nanometer zero-valent iron. The preparation method has the following advantages: 1. the preparation method is soft in condition, simple in operation, green and environment-friendly and convenient to realize the quantitative production; 2, the raw material is wide in source and low in price, and good for reducing cost; 3, the load volume of the load type nanometer zero-valent iron is adjustable, the product shape is uniform and the dimension is controllable; 4, the nanometer zero-valent iron obtained by the invention has high-efficient removing ability for heavy metal ions, organic solution, dye and other environmental pollutants, and can be used as the water disposal agent in an environmental domain.

The invention discloses a metal ion doping Fe(OH) 2 The method for removing halogenated organic pollutants in water is to first configure Fe in an oxygen-free environment 2+ solution and lye, and the Fe 2+ The solution was slowly added dropwise to the lye, and after the addition was completed, it was left to stand to obtain Fe(OH) 2 The stock solution is for standby; then the divalent transition metal ion solution is configured in an oxygen-free environment for standby; then in an oxygen-free environment, Fe(OH) is added to the reaction vessel in turn 2 The stock solution and the divalent transition metal ion solution are neutralized by using hydrochloric acid to adjust the pH in the reaction vessel to obtain a decontamination solution; finally, the aqueous solution containing halogenated organic pollutants is added to the decontamination solution and shaken and mixed to carry out the decontamination reaction, that is, It can complete the removal of halogenated organic pollutants in water. The present invention utilizes Fe(OH) 2 The metal ions form a reduction system, which can completely dehalogenate HOCs in a short time, and has high-efficiency removal capability; the method of the invention is simple and convenient, easy to implement, and cost-saving.

The invention relates to the field of water pollution control and water body ecological restoration, and discloses an artificial floating bed composite ecological matrix, which comprises the following raw materials in terms of volume percentage: 60-75% of solid-state adsorption matrix, 24-37% of solid-state ecological improvement matrix and 1-3% of mud-like bio-enhanced matrix, wherein, in parts by weight, the solid-state adsorption matrix includes 10-15 parts of dolomite powder, 10-15 parts of shell powder and 1-3 parts of iron-manganese mud from waterworks, solid ecological The improved matrix includes 10-15 parts of charcoal powder, 2-4 parts of pine needle powder and 5-10 parts of rice husk ash; and a preparation method of an artificial floating bed composite ecological matrix is ​​also disclosed. The raw materials of the artificial floating bed composite ecological matrix of the present invention are cheap, easy to obtain, clean and harmless, the preparation process is simple, and the preparation process has little impact on the environment. Nitrogen and phosphorus substances have high-efficiency and continuous removal capacity.