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Device and method for treating high-concentration ammonia-nitrogen wastewater in aeration-anaerobic circulation mode

A technology for anaerobic circulation and ammonia nitrogen wastewater, applied in aerobic and anaerobic process treatment, water treatment parameter control, chemical instruments and methods, etc., can solve problems such as difficult conversion rates, avoid low efficiency, and achieve moderate oxygenation , to avoid the effect of energy consumption

Active Publication Date: 2016-04-20
BEIJING UNIV OF TECH
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Problems solved by technology

However, actual engineering proves that it is extremely difficult to control the conversion rate.

Method used

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  • Device and method for treating high-concentration ammonia-nitrogen wastewater in aeration-anaerobic circulation mode

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Such as figure 1 As shown, the principle diagram of the aeration-anaerobic circulation type treatment high-concentration ammonia nitrogen wastewater device of the present invention is provided, which consists of water inlet pipe 1, oxygenation column 2, aerator 3, air supply pipe 4, water inlet pump 5, The water distribution pipe 6, the supporting layer 7, the sludge reactor 8, the air riser 10, the return tank 12, the water outlet pipe 11 and the circulation pipe 13; 2 has a relatively large aspect ratio, and the water inlet pipe 1 is arranged on the upper end of the oxygenation column 2, and the sewage to be purified flows into the oxygenation column 2 through the water inlet pipe 1. The aerator 3 is arranged at the bottom of the inner cavity of the oxygenation column 2 , and the air supply pipe 4 communicates with the aerator 3 for passing ai...

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Abstract

The invention discloses a device for treating high-concentration ammonia-nitrogen wastewater in an aeration-anaerobic circulation mode. The device comprises an oxygenating column, a water inlet pump, a sludge reactor and a refluxing tank. An aerator is arranged at the bottom of the oxygenating column, a water distributing pipe is arranged at the bottom of the sludge reactor, oxygen-dissolved wastewater is pumped into the water distributing pipe through the water inlet pump, the refluxing tank is communicated with the oxygenating column, and gas generated by purifying the wastewater pushes the wastewater into the refluxing tank, the wastewater then flows into the oxygenating column to be oxygenated again, and circulating purifying is achieved. According to a wastewater treatment method, the oxygen dissolved in the denitriding process can only be supplied by oxygen dissolved in a water body, accurate supply control over electronic acceptors is achieved, it is guaranteed that ammonia nitrogen can only be converted into nitrite nitrogen, a proper environment is provided for smoothly carrying out the anaerobic ammonia oxidation process in the same reactor, the defect that an original anaerobic ammonia oxidation technology is quite prone to insufficient aeration or excessive aeration is overcome, the electronic acceptors are properly supplied in the denitriding process, and ammonia nitrogen in the wastewater is stably removed.

Description

technical field [0001] The present invention relates to a treatment device and method for high-concentration ammonia-nitrogen wastewater, and more specifically, to an aeration- An anaerobic circulation type treatment device and method for high-concentration ammonia nitrogen wastewater. Background technique [0002] In the treatment of water environment, the treatment of high-concentration ammonia-nitrogen sewage and wastewater has plagued environmental protection workers for many years. The main reasons are: the cost of removing ammonia nitrogen in wastewater by chemical methods is high; biological treatment requires a large amount of aeration, high energy consumption, and the addition of additional carbon sources such as organic matter. For example, the high concentration of ammonia nitrogen in the sludge digestion liquid of urban sewage treatment plants returns to the water treatment process, which increases the denitrification load of water treatment and becomes a huge b...

Claims

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Application Information

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IPC IPC(8): C02F3/30
CPCC02F3/301C02F3/302C02F2209/22C02F2301/046
Inventor 杨晓进戚伟康于中振戚伟健许杰胡汉君
Owner BEIJING UNIV OF TECH
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