Synthesis and application method of composite function resin for selectively removing nitrate and phosphate at same time

A technology with complex functions and synthetic methods, applied in chemical instruments and methods, water/sludge/sewage treatment, adsorption water/sewage treatment, etc., can solve problems such as little consideration of competitive adsorption effects

Inactive Publication Date: 2015-12-09
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are few reports on the simultaneous removal of nitrate and phosphate in the secondary effluent of biochemical treatment of sewage treatment plants using adsorption technology, and little consideration is given to the ubiquitous SO in water bodies. 4 2－ 、HCO 3 - , Cl － Competitive Adsorption Effects of Coexisting Anions

Method used

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  • Synthesis and application method of composite function resin for selectively removing nitrate and phosphate at same time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Synthesis of Composite Functional Resin for Simultaneous and Selective Removal of Nitrate and Phosphate

[0026] (1) At room temperature, mix and dissolve 7g sodium chloride, 8g sodium carbonate, 2g sodium sulfate, 20g magnesium sulfate and 8g gelatin in 500mL water to make an aqueous phase;

[0027] (2) Mix 12g of chloromethylstyrene, 15g of 4-vinylpyridine, 3g of divinylbenzene, 18g of toluene, 14g of gasoline, 2g of liquid wax, 0.15g of benzoyl peroxide and 0.4g of azobisisobutyronitrile to obtain The organic phase of the polymerization reaction, that is, the oil phase;

[0028] (3) Add the water phase to a three-necked round-bottomed flask, heat up to 50°C and add 4 drops of methylene blue, then add the oil phase to the three-necked flask, stir to disperse the oil phase evenly, and continue at a heating rate of 5°C / min Heat up to 75°C for 2 hours, then raise the temperature to 80°C for 2 hours, stop the reaction, then cool down to room temperature, filter the reactio...

Embodiment 2

[0032] Synthesis of Composite Functional Resin for Simultaneous and Selective Removal of Nitrate and Phosphate

[0033] (1) At room temperature, mix and dissolve 10g of sodium chloride, 15g of sodium carbonate, 5g of sodium sulfate, 18g of magnesium sulfate and 8g of gelatin in 500mL of water to make an aqueous phase;

[0034] (2) Mix 13g of chloromethylstyrene, 14g of 4-vinylpyridine, 5g of divinylbenzene, 20g of toluene, 15g of gasoline, 2g of liquid wax, 0.35g of benzoyl peroxide and 0.20g of azobisisobutyronitrile to obtain The organic phase of the polymerization reaction, that is, the oil phase;

[0035] (3) Add the water phase to a three-necked round-bottomed flask, heat up to 50°C and add 5 drops of methylene blue, then add the oil phase to the three-necked flask, stir to disperse the oil phase evenly, and continue at a heating rate of 5°C / min Heat up to 75°C for 2 hours, then raise the temperature to 80°C for 2 hours, then stop the reaction, then cool down to room tem...

Embodiment 3

[0039] Synthesis of Composite Functional Resin for Simultaneous and Selective Removal of Nitrate and Phosphate

[0040] (1) At room temperature, mix and dissolve 15g of sodium chloride, 9g of sodium carbonate, 8g of sodium sulfate, 20g of magnesium sulfate and 10g of gelatin in 500mL of water to make an aqueous phase;

[0041] (2) Mix 10g of chloromethylstyrene, 9g of 4-vinylpyridine, 12g of divinylbenzene, 10g of toluene, 20g of gasoline, 2g of liquid wax, 0.20g of benzoyl peroxide and 0.32g of azobisisobutyronitrile to obtain The organic phase of the polymerization reaction, that is, the oil phase;

[0042] (3) Add the water phase to a three-necked round-bottom flask, heat up to 45°C and add 6 drops of methylene blue, then add the oil phase to the three-necked flask, stir to disperse the oil phase evenly, and continue at a heating rate of 5°C / min. Heat up to 75°C for 2 hours, then raise the temperature to 80°C for 2 hours, stop the reaction, then cool down to room temperatu...

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Abstract

The invention discloses a synthesis and application method of composite function resin for selectively removing nitrate and phosphate at the same time, and belongs to the technical field of high molecular adsorption resin. The composite function resin having pyridine groups and triethylamine groups at the same time is synthesized. The composite function resin has the selective adsorption effect of pyridine transition metal complex on phosphate and the selective adsorption effect of triethylamine on nitrate at the same time. Nitrate and phosphate can be selectively adsorbed when other solubility coexistence anions such as sulfate radical, bicarbonate radical and / or chloride ions exist in a solution, and therefore the aim of selectively removing nitrate and phosphate at the same time is achieved, and deep removal of low-concentration nitrate and phosphate in secondary discharged water in biochemical treatment in sewage treatment plants is achieved.

Description

technical field [0001] The invention belongs to the technical field of synthesis of polymer adsorption resins, in particular to a synthesis and application method of a composite functional resin capable of selectively removing nitrates and phosphates at the same time. Background technique [0002] Nitrogen and phosphorus are the main elements that cause eutrophication of water bodies. The discharge of industrial and urban sewage treatment plants is considered to be the main source of N and P that cause eutrophication of receiving water bodies. Since the implementation of the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002) on July 1, 2003, my country has put forward strict requirements for ammonia nitrogen, TN, and TP in the effluent of urban sewage treatment plants (TN<15mg / L, TP<0.5mg / L). At present, domestic urban sewage is generally treated by secondary biochemical methods. However, due to the problems of carbon sources, sludge age a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/58
Inventor 申战辉史嘉璐王春峰
Owner HENAN NORMAL UNIV
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