Device and process for treating ammonium chloride wastewater by supergravity carbonization reaction

A technology of carbonization reaction and ammonium chloride, which is applied in the direction of ammonium chloride, ammonium halide, water/sewage treatment, etc., can solve the problems of difficult high-concentration ammonium chloride wastewater treatment, unreachable ammonium chloride wastewater, and high cost. Achieve the effects of shortening the carbonization reaction time, shortening the carbonization time, and reducing the operating cost

Active Publication Date: 2016-06-15
ZHONGBEI UNIV
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Problems solved by technology

[0004] In order to solve the problems that the current common electroosmosis treatment of ammonium chloride wastewater cannot achieve economical and effective electrodialysis technology, membrane separation technology is difficult to effectively treat high-concentration ammonium chloride wastewater, and the cost is too high, it provides A device and process for treating ammonium chloride wastewater by high-gravity carbonization reaction

Method used

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  • Device and process for treating ammonium chloride wastewater by supergravity carbonization reaction
  • Device and process for treating ammonium chloride wastewater by supergravity carbonization reaction

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Effect test

Embodiment 1

[0021] Example 1: Take 10L of an industrial ammonium chloride wastewater, the concentration of which is 6% (60g / L). Add 5mol organic amines to the waste water according to the ratio of 0.5mol / L, and use CO 2 Gas distribution with air, where CO 2 The volume fraction is 70%, the gas is in cross-flow contact with the solution, and the liquid circulation per hour is 6 times the liquid volume in the storage tank.

[0022] First, prepare CO with a volume fraction of 70% 2 Gas, turn on the cross-flow rotary packed bed, adjust the frequency converter to make the rotary packed bed speed 3000r / min, start the liquid circulation pump to send the ammonium chloride wastewater to the cross-flow rotary packed bed, open the pressure reducing valve, and send it to the packed bed Pass into the prepared CO 2 For gas, adjust the gas flow meter to keep the liquid-gas ratio at 20L / m 3, circulate for half an hour, stop rotating the packed bed, close the pressure reducing valve, and after the trea...

Embodiment 2

[0023] Embodiment 2: change following conditions, other conditions are the same as embodiment 1. The speed of the high-gravity rotating packed bed is adjusted to 2500r / min, and the liquid-gas ratio is 25L / m 3 . Finally, the conversion rate of ammonium chloride can reach 93%, and the regeneration rate of organic amine can reach 86%.

Embodiment 3

[0024] Embodiment 3: change following conditions, other conditions are the same as embodiment 1. The speed of the high-gravity rotating packed bed is adjusted to 2000r / min, and the liquid-gas ratio is 30L / m 3 . Finally, the conversion rate of ammonium chloride can reach 90%, and the regeneration rate of organic amine can reach 83%.

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Abstract

The invention belongs to the technical field of treating industrialammonium chloride wastewater, and provides a device and a process for treating the ammonium chloride wastewater by a supergravity carbonization reaction, aiming at solving the problems that the current common electro-osmotic method for treating the ammonium chloride wastewater cannot realize an electrodialysis technology which is not only economical but also effective, the high-concentration ammonium chloride wastewater is hardly treated in an effective way by a membrane separation technology, and the cost is overhigh, etc. Ammonium chloride, organic amine and carbon dioxide react in a supergravity rotary packed bed to generate a mixed hydrochloric acid solution of ammonium bicarbonate and organic amine; after the ammonium bicarbonate and the organic amine are separated in a separating funnel, an organic amine solution reacts with ammonium hydroxide to regenerate organic amine; an obtained ammonium chloride solution through the regeneration is subjected to concentration, crystallization, filtration, and drying to obtain industrial grade ammonium chloride. The carbonization effect is improved; the carbonization reaction time is shortened; the treatment effect is improved; energies are saved; environment protection is realized; by adopting the method provided by the invention, reaction equipment can be minimized, the carbonization time can be shortened, the treatment effect can be improved, and the operation cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of treating industrial ammonium chloride wastewater, and in particular relates to a device and a process for treating ammonium chloride wastewater by high-gravity carbonization reaction. Background technique [0002] Industrial ammonium chloride wastewater has the characteristics of large discharge volume and high biochemical oxygen consumption (BOD), which has caused serious pollution to the environment and water resources. Ammonia nitrogen consumes dissolved oxygen in water, accelerates the eutrophication process in water, causes algae to multiply excessively, harms aquatic organisms, and destroys ecological balance. Microorganisms in water convert ammonia nitrogen into nitrate nitrogen and nitrite nitrogen. The action of disinfection liquid in tap water with ammonia nitrogen will generate nitrogen amine, which will reduce the disinfection effect of water. In addition, a large amount of ammonium chloride ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C01C1/16C02F101/12C02F101/16
CPCC01C1/164C02F1/58C02F2101/12C02F2101/16
Inventor 刘有智祁贵生焦纬洲高璟张巧玲罗莹袁志国申红艳栗秀萍郭强
Owner ZHONGBEI UNIV
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