35results about How to "Strong adsorption and removal ability" patented technology

The invention provides an energy-saving evaporation treatment process of high-salinity wastewater. The energy-saving evaporation treatment process comprises an evaporating system, a concentrating system, a drying system and a heat circulating system. Grading preheating, heating evaporation, adsorption purification, concentration, adsorption purification and high-temperature drying are successively carried out on the high-salinity wastewater treated by a wastewater treatment system to obtain the finished product of inorganic salt, heat exhausted in the evaporation, concentration and drying processes is recycled, and wastewater is discharged. By adopting the technical scheme, wastewater discharged finally meets the national industrial wastewater discharge standard, the purity of the obtained inorganic salt is as high as 99.3%, and the energy-saving effect is remarkable.

The invention provides a carbon-coated attapulgite clay composite material, which consists of: attapulgite clay and carbon nano-particles coated on the surface of the attapulgite clay. The invention also provides a preparation method of the carbon-coated attapulgite clay composite material. The method comprises the steps of: mixing attapulgite clay with glucose in water, and leaving them to undergo a carbonization reaction so as to obtain the carbon-coated attapulgite clay composite material. The carbon-coated attapulgite clay composite material provided in the invention has a strong adsorption capacity, can achieve a significant effect in adsorption removal of heavy metals from water, and has a good adsorption removal capacity on both bivalent lead ions and hexavalent chromium ions in water. Experimental results show that, when used for removal of heavy metal ions in water, the carbon-coated attapulgite clay composite material provided in the invention has an adsorption capacity higher than that of attapulgite clay, activated carbon, oxidative activated carbon, carbon aerogels, carbon nanotubes, chitosan polymer and other adsorbents.

The invention discloses a preparation method of calcium hydroxide nano particles with high adsorption activity. The preparation method is characterized by comprising the following steps: putting CaCl2 in a three-necked bottle; adding deionized water to dissolve the CaCl2; stirring with a magnetic stirrer; weighing SDS or PEG, wherein the mass ratio is as follows:CaCl2:SDS is equal to 22.2:(0.47-2.34) or CaCl2:SDS is equal to 22.2:(2.65-14.44); adding SDS or PEG into the three-necked bottle; stirring to dissolve; dissolving NaOH in the deionized water, wherein mass ratio of the CaCl2 to the NaOH is 22.2:8;dropwise adding an obtained solution to the three-necked bottle at the speed of 40ml/h; stirring to react for 0.5-2.5 hours to obtain slurry; performing suction filtering on the slurry; and washing and drying. According to the preparation method, the prepared Ca(OH)2 power body is uniform in particles and are in single dispersion; the particle granularity is 200-300nm and the specific surface area is 88m<2>/g; the maximum N2 adsorption amount can reach 80ml/g; meanwhile the removal rate of NOx can reach 98%; the preparation method has important practical significance on leakage treatment of liquid propellant N2O4 at a space launching site.

The invention discloses a preparation method of spherical haydite matrix for constructed wetland, which comprises removing impurity and particles in coagulated sludge at the terminal of a water supply plant to give sludge paste; completely mixing kaolin with the treated sludge, regulating the water content of the sludge to 60-65%, and preparing spherical haydite with particle size of 15-18 mm and25-28 mm by using the sludge, wherein per 1 kg of dry sludge is mixed with 0.60-0.70 kg of kaolin; and preheating at 200 DEG C for 1h, and sintering at 600-700 DEG C for 120-150min to obtain the final product with particle size of 8-10mm and 15-18mm. It is proved by the experiment that the matrix prepared by the method can remove COD (chemical oxygen demand), ammonium nitrogen and total phosphorus in wastewater effectively without matrix plugging, and is suitable for treatment of domestic wastewater, industrial and agricultural wastewater and polluted surface water. The treated wastewater reaches the first-level A standard of discharge standard of wastewater for municipal wastewater treatment plant.

The invention discloses a micro-nano structure bismuth oxide material and a preparation method thereof. The component of the material is non-stoichiometric bismuth oxide with a molecular formula of Bi2O2.33, and the material is in a tremella shape formed by vertical cross-linking of non-stoichiometric bismuth oxide nanosheets. The specific surface area of the tremella shaped non-stoichiometric bismuth oxide is larger than or equal to 26.6m<2>/g, and the nanosheets composing the tremella shaped non-stoichiometric bismuth oxide have a thickness of 5-10nm and a height of 2-5 micrometers. The preparation method includes: firstly using ethanol and ethylene glycol to prepare an organic solvent, then dissolving a soluble bismuth salt in the organic solvent to obtain a soluble bismuth salt solution, then subjecting the soluble bismuth salt solution to sealed reaction to obtain a reaction solution, and then carrying out solid-liquid separation, washing and drying treatment on the reaction solution in order, thus obtaining the target product. The micro-nano structure bismuth oxide material has adsorption capacity to I<-> and IO<3-> ions, and can be widely applied to high performance adsorption of radioactive iodine in water environment.

The invention discloses a modified carbon nano tube material and a preparation method and application thereof. The modified carbon nano tube material comprises a carbon nano tube, the surface of the carbon nano tube is modified with ethylenediamine tetraacetic acid, and the mass content of carboxyl in the modified carbon nano tube is 3%-5%. The preparation method comprises the steps that oxidationtreatment is conducted on the carbon nano tube; an activated carbon nano tube intermediate is prepared; an activated ethylenediamine tetraacetic acid intermediate is prepared; the activated carbon nano tube intermediate is mixed with the activated ethylenediamine tetraacetic acid intermediate, and diethylenetriamine is added for preparing the modified carbon nano tube material. The modified carbon nano tube material has the advantages that the technology is simple, operation is easy, the reaction condition is mild and easy to control, the cost is low, less energy is consumed, and less time isconsumed. The modified material can stabilize refractory organic matter and heavy metal in bottom mud, the stabilization effect is significant, and the modified carbon nano tube material has a wide application prospect.

The invention discloses a preparation method of a kieselguhr in-situ growth Nb2O5 nanorod. The preparation method comprises the following steps: adding Nb2O5 powder into hydrofluoric acid, then addingammonia water for reaction for 3 to 4 h, and performing filtering, washing and drying to obtain niobic acid powder; putting the niobic acid powder into a polyethylene reaction kettle, adding ammoniumoxalate, SDBS (sodium dodecyl benzene sulfonate), kieselguhr and deionized water, stirring the materials for 50 to 60 min, putting the mixture into a drying box at 145 to 155 DEG C after the materials are uniformly dissolved, performing constant-temperature heating for 15 to 17 h, and cooling, filtering, cleaning and drying the mixture, thus obtaining the kieselguhr in-situ growth Nb2O5 nanorod.The method is simple, convenient, quick and easy to operate; the prepared Nb2O5 nanorod is excellent in adsorption and removal capacity for Cr(VI) and can be prepared in a large scale.

The invention belongs to the field of organic matter-based refining of titanium tetrachloride, and particularly relates to a compound organic matter for preparing high-brightness titanium tetrachloride by removing vanadium with coarse titanium. The compound organic matter comprises synthetic base oil, naphthenic oil, alkylamine and inorganic electrolyte; the mass ratio of the synthetic base oil tonaphthenic oil, alkylamine to inorganic electrolyte is: (30-50):(20-50):(5-10):(5-10); the synthetic base oil is n-dodecane; the naphthenic oil is KG16C naphthenic oil; the alkylamine is oleamide; and the inorganic electrolyte is anhydrous zinc sulfate. The invention can significantly improve the brightness of the titanium tetrachloride after vanadium removal, so that the chromaticity of the titanium tetrachloride after vanadium removal is less than 5 mgK2Cr2O7/L<-1> to provide high-quality raw material to subsequent preparation of titanium dioxide.

The invention discloses a preparation method and application of a hybrid membrane adsorbent for removing nickel ions in water. The preparation method comprises the following steps: preparing a silicon-based hybrid precursor through a sol-gel reaction between chitosan and epoxy silane, adding the obtained silicon-based hybrid precursor into a polyvinyl alcohol aqueous solution for mixing, standingand defoaming the obtained substance to obtain a coating solution, and coating the coating solution on a support to obtain a membrane; or dissolving the film coating liquid with a solvent, and then coating the film to obtain the film; and drying the membrane to obtain the hybrid membrane adsorbent which can be used for removing the nickel ions in the water and can be provided with a support body or can be not provided with the support body. The prepared hybrid membrane adsorbent has relatively strong adsorption and removal capability on nickel ions in water, high adsorption efficiency and highspeed, and the nickel ion adsorption amount can be effectively adjusted, so that the prepared hybrid membrane adsorbent can be applied to adsorption recovery and purification treatment of the nickelions in nickel-containing wastewater.

The invention discloses a glutamic acid modified carbon nanotube composite as well as a preparation method and an application thereof. The composite contains carbon nanotubes, surfaces of the carbon nanotubes are modified with glutamic acid, and the mass content of the carboxyl in the composite is 2%-3%. The preparation method comprises the following steps: oxidation treatment of the carbon nanotubes, preparation of activated carbon nanotube intermediates, and mixing and reaction of the activated carbon nanotube intermediates with a glutamic acid solution to prepare the glutamic acid modifiedcarbon nanotube composite. The composite has the advantages of stable structure, high adsorption ability, good biocompatibility and high practical application value, and the preparation method has theadvantages of being simple in process, easy to operate, mild and controllable in response condition, low in cost, low in energy consumption, short in consumed time and the like. The composite can beused for adsorbing dye and heavy metals in water, has remarkable adsorption removal effect, has higher application value in treatment of polluted water, and has wide application prospect.

The invention discloses an organic fertilizer additive and a preparation method and application thereof. The organic fertilizer additive is prepared from Chinese herbal components and ore components,wherein a mass ratio of the Chinese herbal components to the ore components is 2.5 to 1, the Chinese herbal components comprise the following raw materials in parts by weight: 3-5 parts of caulis mahoniae, 1-3 parts of radix kansui, 2-5 parts of ginkgo seed, 1-3 parts of radix angelicae sinensis, and 1-3 parts of herba artemisiae annuae, the ore components comprise the following raw materials in parts by weight: 2-6 parts of maifanstone, 1-3 parts of calcitum, 1-3 parts of calamine, 2-3 parts of lapis chloriti, 2-4 parts of phosphate ores, 2-4 parts of potash feldspar, 1-3 parts of talcum, 1-3parts of mirabilite, and 1-3 parts of sodium sulphate. The organic fertilizer additive provided by the invention can increase content of trace elements in soil, improve yield and quality of crops, and reduce content of mycotoxin in soil.

The invention discloses a soil improving agent and a preparation method and application thereof. The soil improving agent provided by the invention is mainly prepared from a Chinese herbal medicine component and an ore component in a mass ratio of 1:5, wherein the Chinese herbal medicine component comprises the following raw materials in parts by weight: 3 to 7 parts of euphorbia kansui, 2 to 6 parts of ginkgo and 1 to 3 parts of angelica sinensis; the ore component comprises the following raw materials in parts by weight: 1 to 2 parts of ruddle, 4 to 7 parts of zeolite, 3 to 6 parts of medical stone, 2 to 4 parts of calamine, 1 to 3 parts of lapis chloriti, 1 to 3 parts of chalcanthite, 2 to 5 parts of phosphate rock, 2 to 3 parts of talc, 2 to 4 parts of mirabilite and 4 to 7 parts of potassium feldspar. The soil improving agent provided by the invention can increase the content of trace elements in the soil, improve the soil hardening and reduce the content of mycotoxins in the soil.

The invention discloses a preparation method and application of a hybrid membrane adsorbent for removing copper ions in water. The preparation method comprises the following steps: reacting a chitosan/epoxy chloropropane solution with a titanium-based precursor containing tetrabutyl titanate and acetylacetone to prepare a hybrid precursor, adding the obtained hybrid precursor into a polyvinyl alcohol aqueous solution to react, standing and defoaming the obtained substance to obtain a coating solution, coating a support with the coating solution to obtain a membrane, and drying to obtain the hybrid membrane adsorbent capable of being used for removing the copper ions in the water. When the hybrid membrane adsorbent is in use, firstly, copper-containing wastewater is introduced into an integrated membrane separator, and a cross-flow operation mode is adopted to adsorb and remove most of copper ions in the water in the plate-type membrane separator section; and trace copper ions in the water are removed in the section of a spiral-wound membrane separator. In the separation process, the hybrid membrane plays dual roles of an adsorbent and membrane filtration, has the advantages of short process flow, simplicity and convenience in operation, easiness in cleaning, good selectivity and the like, and can be used for purification treatment of copper-containing wastewater.

The invention discloses an organic fertilizer additive and a preparation method thereof. The organic fertilizer additive is mainly composed of Chinese herb components and mineral components at a weight ratio of 2:1, wherein the Chinese herb components are composed of materials including, by weight part, 1-3 parts of leatherleaf mahonia, 2-5 parts of ginkgo, 1-3 parts of radix stemonae, 1-3 parts of angelica sinensis and 1-3 parts of artemisia apiacea; the mineral components are composed of materials including, by weight part, 2-6 parts of ruddle, 1-3 parts of calcite, 1-3 parts of calamine, 1-3 parts of lapis chloriti, 2-4 parts of phosphate ore, 2-4 parts of potassium feldspar, 1-3 parts of talcum and 1-3 parts of mirabilite. The organic fertilizer additive can increase the content of trace elements in soil, improve the yield and quality of crops and reduce the content of mycotoxin in soil.

The invention discloses an organic fertilizer additive and preparation method thereof. The organic fertilizer additive is composed of Chinese herb components and mineral components at a weight ratio of 1:2-3.5, wherein the Chinese herb components are composed of materials including, by weight part, 3-6 parts of leatherleaf mahonia, 1-3 parts of euphorbia kansui, 4-6 parts of ginkgo, 1-3 parts of radix stemonae, 1-3 parts of angelica sinensis and 2-4 parts of artemisia apiacea; the mineral components are composed of materials including, by weight part, 1-2 parts of ruddle, 4-6 parts of zeolite,2-5 parts of medical stone, 1-2 parts of calcite, 1-2 parts of talcum, 2-4 parts of calamine, 1-2 parts of lapis chloriti, 2-4 parts of bluestone, 1-2 parts of alum, 2-4 parts of phosphate ore, 3-6 parts of potassium feldspar, 1-2 parts of mirabilite and 1-2 parts of crude mirabilite. The organic fertilizer additive can increase the content of trace elements in soil, improve the yield and qualityof crops and reduce the content of mycotoxin in soil.

The invention discloses an organic fertilizer additive and a preparation method and application thereof. The organic fertilizer additive provided by the invention is mainly prepared from a Chinese herbal medicine component and an ore component in a mass ratio of 1.5:1: the Chinese herbal medicine component comprises the following raw materials in parts by weight: 1 to 3 parts of the meritorious wood, 3 to 6 parts of euphorbia kansui, 1 to 3 parts of radix stemonae, 1 to 3 parts of angelica and 1 to 3 parts of artemisia annua; the ore component comprises the following raw materials in parts byweight: 3 to 6 parts of calamine, 1 to 3 parts of sapphire, 1 to 3 parts of cholestasis, 2 to 4 parts of phosphate rocks, 2 to 4 parts of potassium feldspar, 1 to 3 parts of talc and 1 to 2 parts of mirabilite. The organic fertilizer additive provided by the invention can increase the content of trace elements in the soil, increase the yield and quality of a crop, and reduce the content of mycotoxins in the soil.