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Treatment method of ammonia-containing waste gas

A treatment method and technology for waste gas, which are applied in separation methods, anaerobic digestion treatment, water treatment parameter control, etc., can solve the problems of secondary pollutant nitrogen-containing wastewater, poor ammonia removal effect, and large amount of treatment agent. Achieve high removal efficiency, no secondary pollution, and simple method.

Active Publication Date: 2021-03-09
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are disadvantages such as large amount of treatment agent used, complex process, high energy consumption, uneasy control of reaction, slow reaction, generation of secondary pollutant nitrogen-containing wastewater, and poor removal effect on high-concentration ammonia gas

Method used

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  • Treatment method of ammonia-containing waste gas
  • Treatment method of ammonia-containing waste gas
  • Treatment method of ammonia-containing waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for treating ammonia-containing waste gas, said method comprising the following steps:

[0037] (1) Prepare trace element culture solution, including the following components: 9g / L ferric sulfate, 5g / L disodium edetate, 0.054g / L potassium dihydrogen phosphate, 1g / L sodium bicarbonate, 0.7g / L L calcium chloride, 0.5g / L magnesium sulfate, 0.7g / L potassium chloride, 0.5g / L sodium chloride, 0.24mg / L cobalt chloride, 0.014mg / L boric acid, 0.22mg / L sodium molybdate, 0.43mg / L zinc sulfate, 0.25mg / L copper sulfate, 0.99mg / L manganese chloride and 0.19mg / L nickel chloride.

[0038] (2) Mix the activated sludge with a relative abundance of 44.9% of the anammox bacteria Candidatus Kueneia and the trace element culture solution, adjust the pH value to 7.6, and make the anammox bacteria ferment and grow at a temperature of 35°C for 3 1 day, the inoculation medium was obtained, and at this time, the relative abundance of anammox bacteria was 17.3%; then waste gas containing...

Embodiment 2

[0040] A method for treating ammonia-containing waste gas, said method comprising the following steps:

[0041] (1) Prepare trace element culture solution, including the following components: 9g / L ferric sulfate, 5g / L disodium edetate, 0.054g / L potassium dihydrogen phosphate, 1g / L sodium bicarbonate, 0.7g / L L calcium chloride, 0.5g / L magnesium sulfate, 0.7g / L potassium chloride, 0.5g / L sodium chloride, 0.24mg / L cobalt chloride, 0.014mg / L boric acid, 0.22mg / L sodium molybdate, 0.43mg / L zinc sulfate, 0.25mg / L copper sulfate, 0.99mg / L manganese chloride and 0.19mg / L nickel chloride.

[0042] (2) Mix the activated sludge with a relative abundance of 44.9% of the anammox bacteria Candidatus Kueneia and the trace element culture solution, adjust the pH value to 7.6, and make the anammox bacteria ferment and grow at a temperature of 35°C for 3 day, the inoculation medium was obtained, and at this time, the relative abundance of anammox bacteria was 17.3%; then the waste gas containing...

Embodiment 3

[0044] A method for treating ammonia-containing waste gas, said method comprising the following steps:

[0045] (1) Prepare trace element culture solution, including the following components: 9g / L ferric sulfate, 5g / L disodium edetate, 0.054g / L potassium dihydrogen phosphate, 1g / L sodium bicarbonate, 0.7g / L L calcium chloride, 0.5g / L magnesium sulfate, 0.7g / L potassium chloride, 0.5g / L sodium chloride, 0.24mg / L cobalt chloride, 0.014mg / L boric acid, 0.22mg / L sodium molybdate, 0.43mg / L zinc sulfate, 0.25mg / L copper sulfate, 0.99mg / L manganese chloride and 0.19mg / L nickel chloride.

[0046] (2) Mix the activated sludge with a relative abundance of 44.9% of the anammox bacteria Candidatus Kueneia and the trace element culture solution, adjust the pH value to 7.6, and make the anammox bacteria ferment and grow at a temperature of 35°C for 3 day, the inoculation medium was obtained, and at this time, the relative abundance of anammox bacteria was 17.3%; then the waste gas containi...

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Abstract

The invention belongs to the technical field of waste gas treatment, and discloses a treatment method of ammonia-containing waste gas. The treatment method comprises the following steps: mixing activated sludge containing anaerobic ammonium oxidation bacteria with a culture solution, and fermenting to obtain an inoculation culture medium; and introducing ammonia-containing waste gas, air and an inert gas into the inoculation culture medium, and reacting, wherein the flow ratio of the ammonia-containing waste gas to the air to the inert gas is (2-4: 1-5: 3-10). According to the treatment method, the ammonia-containing waste gas can be effectively treated, the contents of ammonia nitrogen, total nitrogen and organic matters in the wastewater can be reduced, the corrosion to equipment duringammonia-containing waste gas treatment is reduced, and the ammonia-containing malodorous gas is effectively treated. The ammonia nitrogen removal rate is greater than 96%, the nitrite removal rate isgreater than 97%, and the total nitrogen removal rate is greater than 98%. According to the treatment method, the use amount of the treatment agent can be reduced, energy consumption is reduced, and secondary pollution is avoided; and the method is simple and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a treatment method for ammonia-containing waste gas. Background technique [0002] Ammonia is widely present in daily life, industrial and agricultural production. Ammonia is very active in the atmosphere, and it is easy to combine with other substances in the atmosphere to generate photochemical smog and inhalable particles and other harmful substances. If it is not handled properly, it will cause serious pollution to the environment. The human body will also experience dizziness, nausea, suffocation and vomiting after ammonia poisoning. [0003] During the treatment process, ammonia-containing exhaust gas will cause serious corrosion to the exhaust gas treatment system, increasing the cost and difficulty of system operation and maintenance. At the same time, ammonia gas is easily soluble in water. Once it meets the water source, it will easily cause am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/58C02F3/28C02F3/34C02F101/16
CPCB01D53/84B01D53/58C02F3/28C02F3/34B01D2251/95C02F2101/16C02F2305/06C02F2209/02C02F2209/06C02F2209/14C02F2209/16Y02A50/20
Inventor 阎佳张鸿郭王思霁
Owner GUANGZHOU UNIVERSITY
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