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Denitrification treatment method and denitrification treatment device for high-ammonia-nitrogen wastewater

A treatment device and high ammonia nitrogen technology, applied in water treatment parameter control, degassed water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of low ammonia nitrogen removal efficiency, uncontrollable denitrification process, and secondary pollution and other problems to achieve the effect of reducing secondary pollution, improving easy blockage, and solving secondary pollution

Active Publication Date: 2021-03-26
NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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  • Application Information

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Problems solved by technology

[0005] Aiming at the uncontrollable denitrification process of high ammonia nitrogen wastewater in the prior art, low ammonia nitrogen removal efficiency, easy blockage, and easy secondary pollution, the present invention provides a A new type of denitrification treatment method and device for high ammonia nitrogen wastewater

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  • Denitrification treatment method and denitrification treatment device for high-ammonia-nitrogen wastewater
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  • Denitrification treatment method and denitrification treatment device for high-ammonia-nitrogen wastewater

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Embodiment 1

[0058] A denitrification treatment device for high ammonia nitrogen wastewater in this embodiment, wherein the size of the device body 100 is 21 m in length, 5 m in width, and 6 m in height, and four aeration plates 110 are arranged inside the device body 100 . The diameter of the aeration holes 1101 is 6 mm, and the distance between the centers of adjacent aeration holes 1101 is 10 mm.

[0059] Using the denitrification treatment device of this embodiment, the denitrification treatment of high ammonia nitrogen wastewater is carried out at a temperature of -5°C. The initial ammonia nitrogen value of the high ammonia nitrogen wastewater to be treated is 800mg / L, and the wastewater enters the device body 100 through the water inlet 101. , turn on the blower 200 and the ultrasonic device 1102, the blower 200 blows air into the aeration pipe 120, aerates the wastewater through the aeration head 130, blows off and releases the ammonia in the wastewater, blows off the ammonia and blo...

Embodiment 2

[0061] The basic content of this embodiment is the same as that of Embodiment 1, the difference is that: a denitrification treatment device for high ammonia nitrogen wastewater in this embodiment, wherein the size of the device body 100 is 23m in length, 7m in width, and 6.5m in height. 5 aeration plates 110 are arranged inside 100 . The diameter of the aeration holes 1101 is 7 mm, and the distance between the centers of adjacent aeration holes 1101 is 9 mm.

[0062] Using the denitrification treatment device of this embodiment, the denitrification treatment of high ammonia nitrogen wastewater is carried out at a temperature of 5 ° C. The initial ammonia nitrogen value of the high ammonia nitrogen wastewater to be treated is 900 mg / L, and the gas-liquid ratio M in the control treatment process is 1600, the sound energy density ρ is 0.04W / mL, and the pH of the wastewater is 12. After 120 minutes of reaction treatment, the ammonia nitrogen value of the wastewater is 171mg / L, and...

Embodiment 3

[0064] The basic content of this embodiment is the same as that of Embodiment 1, the difference is that: a denitrification treatment device for high ammonia nitrogen wastewater in this embodiment, wherein the size of the device body 100 is 20 m in length, 5 m in width, and 6 m in height, and the device body 100 Three aeration panels 110 are arranged inside. The diameter of the aeration holes 1101 is 6 mm, and the distance between the centers of adjacent aeration holes 1101 is 10 mm.

[0065] Using the denitrification treatment device of this embodiment, the denitrification treatment of high ammonia nitrogen wastewater is carried out at a temperature of 15°C. The initial ammonia nitrogen value of the high ammonia nitrogen wastewater to be treated is 600mg / L, and the gas-liquid ratio M in the control treatment process is 1450, the sound energy density ρ is 0.03W / mL, and the pH of the wastewater is 13. After 150 minutes of reaction treatment, the ammonia nitrogen value of the was...

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Abstract

The invention discloses a denitrification treatment method and a device for high-ammonia-nitrogen wastewater, and belongs to the technical field of wastewater treatment. An aeration plate with aeration holes is arranged in a device body in parallel, and ultrasonic devices are arranged at the two ends of the aeration plate; an aeration pipeline and an aeration head are arranged at the bottom of thedevice body, so that ammonia nitrogen in the wastewater is subjected to secondary air stripping treatment through the aeration head and an aeration hole, is released in an ammonia gas form, and is completely decomposed into nitrogen and hydrogen under the further ultrasonic cavitation effect, the ammonia nitrogen removal efficiency is improved, secondary pollution is reduced, and the phenomenon of easy blockage in the denitrification process is improved; furthermore, all parameters in the denitrification process are monitored in real time, the whole denitrification process is accurate and controllable, and the denitrification treatment method and device are particularly suitable for early-stage pretreatment of high-ammonia-nitrogen wastewater with the ammonia-nitrogen concentration ranging from 500 mg / L to 1000 mg / L and the COD ranging from 5000 mg / L to 10000 mg / L.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and more specifically relates to a denitrification treatment method and device for high ammonia nitrogen waste water. Background technique [0002] The common treatment method for high-concentration ammonia-nitrogen wastewater is physical-chemical-biochemical combined treatment. High-concentration ammonia-nitrogen can inhibit biochemical treatment, so the front-end will choose physical and chemical methods for pretreatment. The traditional denitrification process adopts the stripping method, mainly in an alkaline environment, using the principle of phase equilibrium, and blowing off with air or steam to remove ammonia from the solution, thereby achieving the purpose of denitrification. [0003] After searching, it was found that the publication number CN107459177A, the Chinese invention patent application published on December 12, 2017, discloses a method for stripping high ammonia ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F101/16
CPCC02F1/20C02F1/36C02F2101/16C02F2209/06Y02W10/10
Inventor 姜笔存吴苓瑜于伟华屈晋云于志祥谢实涛
Owner NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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