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Metal-doped high molecular material and preparation method thereof and application thereof to ammonia nitrogen removal

A polymer material and metal doping technology, applied in the field of metal doped polymer materials, can solve the problems of low chemical efficiency, poor effect, secondary pollution, etc., and achieve the effect of strong adsorption selectivity, simple process and convenient regeneration

Inactive Publication Date: 2012-07-11
王颖华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical precipitation method has a better effect on treating high-concentration ammonia nitrogen, but the effluent cannot meet the national discharge standards, and MgO and H are needed. 3 PO 4 As a precipitant, the consumption is relatively large, the cost is high, and the precipitate MgNH produced 4 PO 4 No economic value, resulting in secondary pollution; Membrane filtration method requires a large water pressure, so equipment and infrastructure costs are high; Ammonia stripping - stripping method has a simple process and low operating costs, but for ammonia nitrogen wastewater with a pH lower than 10.5 The effect is relatively poor, and it is easy to generate scale, causing serious operational problems; the breakpoint chlorination method is very costly in the treatment of high-concentration ammonia nitrogen; biological denitrification methods include biological nitrification and biological denitrification methods, which occupy a large area and are efficient at low temperatures Low, easily affected by toxic substances, and troublesome in operation and management
[0004] Adsorption methods mainly include ion exchange resin, activated carbon and zeolite adsorption method. Although the oil absorption effect is good, ion exchange resin and activated carbon have no selectivity for ammonia nitrogen, so the adsorption capacity is small and the chemical efficiency is low; although zeolite has certain selectivity for ammonia nitrogen , but the same problem is that the adsorption capacity is small, and it is not suitable for high-concentration ammonia nitrogen wastewater

Method used

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preparation example Construction

[0040] The preparation method of the metal-doped polymer material provided by the present invention comprises:

[0041] a. Mix the water phase comprising water, dispersant and auxiliary dispersant with the oil phase comprising the -C=C-organic compound, -C=C-containing organic compound and initiator, and add a pore forming agent , carry out suspension polymerization to make matrix polymer,

[0042] The weight ratio components contained in the water phase are water: dispersant: auxiliary dispersant = 800~1000: 0.5~3.0: 0.05~0.2, and the weight ratio components contained in the oil phase are organic compounds containing -C=C-: containing -C =C-...-C=C-organic compound: initiator=0.75~0.98:0.02~0.25:0.003~0.01, the weight ratio of oil phase and water phase is 1:4~6, the weight of pore forming agent accounts for water 10% to 20% of the sum of the weight of phase and oil phase.

[0043] The dispersant is one or both of inorganic dispersant or organic dispersant, the inorganic dispe...

Embodiment 1

[0060] (1) Polymerization: Add 18 liters of pure water into a 50-liter polymerization kettle, heat to 45°C, add 10g of magnesium carbonate, 20g of gelatin and 0.15g of methylene blue under stirring, and add 3kg of formazan after stirring. Base styrene, 1kg dipentene, 20g benzoyl peroxide mixed oil phase, then add paraffin 2.6kg. Close the reactor, feed clean compressed air into the reactor, and keep the gas phase pressure in the reactor at 0.02MPa. Start the stirring, adjust the liquid beads to an appropriate particle size, raise the temperature to 80°C, keep warm for 12 hours, then raise the temperature to 100°C, keep warm for 20h, filter, wash, dry, and sieve to obtain 2.35kg of white balls with a particle size of 0.5-0.8mm.

[0061] (2) Amination: Add the spheres obtained after polymerization into a 50-liter reaction kettle, add 10 kg of chloromethyl ether, control the temperature at 60° C., stir for 6 hours, then add 10 liters of water and 5 kg of trimethylamine into the k...

Embodiment 2

[0065] (1) Polymerization: Add 20 liters of pure water into a 50-liter polymerization kettle, heat to 40°C, add 10g of calcium carbonate, 20g of polyvinyl alcohol and 0.15g of petroleum calcium sulfonate under stirring, and add 3kg Propylene, 1 kg of isoprene, 20 g of azobisisobutyronitrile are mixed into an oil phase, and then 3.6 kg of glycerin is added. Close the reactor, feed clean compressed air into the reactor, and keep the gas phase pressure in the reactor at 0.04MPa. Start the stirring, adjust the liquid beads to an appropriate particle size, raise the temperature to 80°C, keep warm for 12 hours, then raise the temperature to 100°C, keep warm for 20h, filter, wash, dry, and sieve to obtain 2.67kg of white balls with a particle size of 0.5-0.8mm.

[0066] (2) Sulfonation: Put the sphere obtained after polymerization into a 50-liter reaction kettle, add 10kg of sulfur trioxide, raise the temperature to 110°C, keep it warm for 16 hours, cool down, slowly add pure water d...

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Abstract

The invention provides a metal-doped high molecular material, which consists of a matrix polymer, a hydrophilic group and a transition metal ion which is doped on the matrix polymer, wherein the matrix polymer is formed by polymerizing an organic compound containing -C=C- and a compound containing -C=C-......-C=C-; the quantity of C in the organic compound containing -C=C- is 2-10; the quantity of C in the organic compound containing -C=C-......-C=C- is 4-15; the hydrophilic group is one or more of sulfonyl, cyan, tertiary amino, quaternary ammonium group or hydroxyl; and the transition metal ion is an ion of Ti, V, Cr, Fe, Cu, Ni or Zn. A relatively stable complex can be formed by the transition metal ion and ammonia nitrogen in water, so that the aim of removing ammonia nitrogen from water is fulfilled. The metal-doped high polymer material provided by the invention has the advantages of high absorptive selectivity to ammonia nitrogen in sewage, high absorption amount, concentration of effluent ammonia nitrogen in water less than 10 ppm, convenience for regenerating and simple process.

Description

technical field [0001] The invention relates to ammonia nitrogen removal technology for ammonia nitrogen-containing wastewater, in particular to a metal-doped polymer material used for ammonia nitrogen removal, a preparation method of the polymer material and an application of the polymer material in ammonia nitrogen removal. Background technique [0002] Ammonia nitrogen-containing wastewater exists in many industrial wastewaters, especially in the production processes of steel, fertilizer, inorganic chemical industry, ferroalloy, glass manufacturing, meat processing and feed. Ammonia nitrogen refers to the free ammonia (NH 3 ) and ammonium ions (NH 4 + ) in the form of nitrogen. Ammonia nitrogen is a nutrient in water bodies that can lead to water eutrophication. Ammonia nitrogen in water can be converted into nitrite under certain conditions. If consumed for a long time, nitrite in water will combine with protein to form nitrosamine, which is a strong carcinogen. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/12C08F210/06C08F236/08C08F220/06C08F8/42B01J20/26B01J20/30C02F1/28C02F1/58C02F101/16
Inventor 王颖华
Owner 王颖华
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