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Industrial wastewater anaerobic ammonia oxidation deep denitrification device and method thereof

A technology for anaerobic ammonium oxidation and industrial wastewater, applied in the field of deep denitrification of industrial wastewater anaerobic ammonium oxidation, can solve the problems of reducing technical advantages, increasing process complexity, increasing investment and operating costs, etc.

Active Publication Date: 2021-05-28
BEIJING TANSI ENVIRONMENTAL PROTECTION TECHCO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The setup of the dual-sludge system requires two sets of sedimentation tanks, sludge return pumps, supporting pipelines, valves, and control systems, which increases the complexity of the process and increases investment and operating costs, reducing the technical advantages of the process in practical applications

Method used

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  • Industrial wastewater anaerobic ammonia oxidation deep denitrification device and method thereof
  • Industrial wastewater anaerobic ammonia oxidation deep denitrification device and method thereof

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Embodiment 1

[0067] A coal-based ethylene glycol wastewater, the water volume is 4000m 3 / d, the concentration of ammonia nitrogen is 500-1000mg / L, and the concentration of COD is 500-1500mg / L, which is a typical low C / N process wastewater.

[0068] The coal chemical wastewater enters the high-load aeration tank first, and the refractory organic matter is removed in the high-load aeration tank. The effluent of the high-load aeration tank is figure 2 The shown device performs deep denitrification anaerobic ammonium oxidation, and the process is as follows:

[0069] The influent water (that is, the effluent from the high-load aeration tank) and the return sludge flowing out of the sedimentation tank 4.1 enter the pre-inhibition zone 1 and mix under the action of the first aeration system 1.1. The sludge return flow is 4000-8000m 3 / d, the ammonia nitrogen concentration in the pre-inhibition zone 1 is controlled at 200mg / L, no nitrification liquid return system is set (that is, the ammonia ...

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Abstract

The invention provides a device and a method for advanced denitrification of industrial wastewater through anaerobic ammonia oxidation, and relates to the technical field of sewage treatment. The device provided by the invention comprises a front inhibition zone, an anaerobic ammonia oxidation system, an O1AO2 denitrification zone and a single sludge sedimentation tank system, the front inhibition zone is provided with a first aeration system, an alkali adding system, an online pH tester and an online ammonia nitrogen tester; the anaerobic ammonia oxidation system is provided with a second aeration system and an immobilized filler layer; the O1AO2 denitrification zone comprises an aeration zone I, an anoxic zone and an aeration zone II which are sequentially communicated in series; and the single sludge sedimentation tank system comprises a sedimentation tank, a sludge outlet formed in the bottom of the sedimentation tank and a water outlet formed in the upper part of the sedimentation tank. The device provided by the invention is a single sludge precipitation system, and the stability of the system can be ensured while the process complexity and the operation cost are reduced. The device provided by the invention is used for carrying out anaerobic ammonia oxidation deep denitrification on the industrial wastewater, and the total nitrogen removal rate is 97% or above.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device and method for deep denitrification by anaerobic ammonium oxidation of industrial wastewater. Background technique [0002] The anaerobic ammonium oxidation process uses NO 2 - -N (nitrite nitrogen) oxidation of NH 4 + -N (ammonia nitrogen), generating N 2 and NO 3 - -N (nitrate nitrogen) is currently the most economical biological denitrification process, which can save 62.5% of aeration energy consumption, remove TN (total nitrogen) without additional carbon source, and reduce greenhouse gas emissions. It is a new type Energy-saving clean production technology for high ammonia nitrogen wastewater. However, the anaerobic ammonium oxidation denitrification process will theoretically produce some NO 3 - -N, the theoretical denitrification efficiency is 88.7%, and the actual project is lower than 80%. In order to meet the emission standards, it is necessa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/307C02F3/303C02F3/305C02F2209/06C02F2209/14C02F2209/16C02F2101/166C02F2101/16Y02W10/10
Inventor 杨岸明田盛
Owner BEIJING TANSI ENVIRONMENTAL PROTECTION TECHCO
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