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Treatment method for high-concentration ammonia nitrogen in urine waste water

A high-concentration, waste water technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve secondary pollution and other problems, and achieve strong pertinence and avoid secondary pollution Effect

Inactive Publication Date: 2012-08-15
CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a method for treating high-concentration ammonia-nitrogen in urine wastewater, on the basis of the above-mentioned "composite denitrification agent and denitrification method for treating medium-concentration ammonia-nitrogen wastewater" that can achieve the effect of composite denitrification agent combined with stripping method , the method of treating high-concentration ammonia-nitrogen by using magnetic organic composite denitrification agent nano-adsorption materials overcomes the discharge of ammonia nitrogen, no precipitation is formed, and solves the secondary problem caused by organic composite denitrification agent combined with blow-off method to treat high-concentration ammonia nitrogen wastewater. pollution problem

Method used

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Experimental program
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Effect test

Embodiment 1

[0036] Limonite was pulverized and sieved to obtain 100-mesh particles. The particles were soaked in concentrated hydrochloric acid and saturated potassium hydroxide methanol solution in sequence, and separated. Then, oxymalononitrile was added to the obtained precipitate for polarization. After pickling, alkali leaching and polarization, the nanomaterials were immersed in an organic composite solvent, stirred for 30 minutes, washed with deionized water for 3 times after precipitation, dried, stirred for 15 minutes and then separated. Methyl tert-butyl ether 30g, ring 40g of oxyethane and 30g of octanal are formulated as an organic compound denitrification agent to treat urine wastewater in a certain place. The dosage of nanomaterials is 50ppm, and the pH of the wastewater is adjusted to 12. The concentration of ammonia nitrogen in the wastewater is reduced from 9000mg / L to 0.4 mg / L, the removal rate of ammonia nitrogen is above 99.9%.

Embodiment 2

[0038] Limonite was crushed and sieved to obtain 110-mesh particles. The particles were soaked in concentrated hydrochloric acid and saturated potassium hydroxide methanol solution in sequence, and separated, and then oxymalononitrile was added to the obtained precipitate for polarization. After pickling, alkali leaching and polarization, the nanomaterials were immersed in an organic composite solvent, stirred for 40 minutes, washed with deionized water for 3 times after precipitation, dried, stirred for 20 minutes, and then separated. Ethyl vinyl ether 20g, 30g of trityl alcohol, 20g of n-butanol, 10g of alkenal, and 20g of ethylene oxide are formulated as an organic compound denitrification agent to treat the urine wastewater of a certain community. The dosage of nanomaterials is 80ppm, and the pH of the wastewater is adjusted to 11.5. The concentration of ammonia nitrogen in the wastewater is reduced from 7000mg / L to 0.2mg / L, and the removal rate of ammonia nitrogen is over ...

Embodiment 3

[0040] Limonite was crushed and sieved to obtain 120-mesh particles. The particles were soaked in concentrated hydrochloric acid and saturated potassium hydroxide methanol solution in sequence, and separated. Then, oxymalononitrile was added to the obtained precipitate for polarization. After pickling, alkali leaching and polarization, the nanomaterials were immersed in an organic composite solvent, stirred for 60 minutes, washed with deionized water for 3 times after precipitation, dried, stirred for 30 minutes, and then separated. Methyl tert-butyl ether 10g, 10g of ethylene oxide, 20g of octanal, 20g of trityl alcohol, 10g of n-butanol, 10g of alkenal, 10g of decanal, and 10g of ethyl vinyl ether were formulated as an organic compound denitrification agent to treat urine wastewater in a certain area. For treatment, the dosage of nanomaterials is 100ppm, the pH of wastewater is adjusted to 12, the concentration of ammonia nitrogen in wastewater is reduced from 10000mg / L to 0....

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Abstract

The invention discloses a treatment method for high-concentration ammonia nitrogen in urine waste water. The treatment method comprises the following steps of: smashing and sieving limonite, immersing particles in concentrated hydrochloric acid and a saturate potassium hydroxide methanol solution sequentially, separating the particles under the action of an applied magnetic field to obtain a sediment, adding oxygen malononitrile in the sediment to perform polarization on the sediment, then immersing the sediment in an organic composite denitrifier containing methyl ten-butyl ether, ethylene oxide and the like for 30-50 minutes, washing the sediment for three times with deionized water, and drying the sediment in the presence of nitrogen protection to obtain a magnetic adsorption nanometer material with the organic composite denitrifier. The treatment method for the high-concentration ammonia nitrogen in the urine waste water can be used for realizing the effect of high removing capacity of the combination of the organic composite denitrifier and an air stripping method, and further solving the problem of secondary pollution caused by ammonia emissions in the treating process of the organic composite denitrifier.

Description

technical field [0001] The invention relates to a method for treating high-concentration ammonia nitrogen in waste water, in particular to a method for treating high-concentration ammonia nitrogen in urine waste water. Background technique [0002] Today in the 21st century, flush toilets have become a major source of environmental pollution. On the one hand, flushing toilets make the water supply of cities that are short of water more tense. On the other hand, people have to invest a lot of money in the construction of sewage collection and treatment systems. About 80% and 50%, most of the nitrogen in urine exists in the form of ammonia nitrogen. Although the composition of urine can meet the needs of nutrients for plant growth, when a large amount of ammonia nitrogen wastewater is discharged into the water body, it will cause eutrophication of the water body. It causes black and smelly water, and even has toxic effects on people and organisms. Therefore, the impact of amm...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F101/16
Inventor 雷春生雷思宇王情思
Owner CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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