A kind of device and method for deep denitrification by anaerobic ammonia oxidation of industrial wastewater

An anaerobic ammonium oxidation and industrial wastewater technology is applied in the field of anaerobic ammonium oxidation deep denitrification devices for industrial wastewater, which can solve the problems of reducing technical advantages, increasing investment and operating costs, increasing process complexity, etc., and improving system stability. The effect of saving aeration energy, saving carbon source

Active Publication Date: 2022-07-08
BEIJING TANSI ENVIRONMENTAL PROTECTION TECHCO
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  • 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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  • A kind of device and method for deep denitrification by anaerobic ammonia oxidation of industrial wastewater
  • A kind of device and method for deep denitrification by anaerobic ammonia oxidation of industrial wastewater

Examples

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Embodiment 1

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

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

[0069] The influent water (ie high-load aeration tank effluent) and the return sludge flowing out of the sedimentation tank 4.1 enter the pre-inhibition zone 1 and are mixed under the action of the first aeration system 1.1, and the sludge return is 4000-8000 m 3 / d, the ammonia nitrogen concentration in the pre-suppression zone 1 is controlled to 200mg / L, the nitrifying solution return system is not set up (that is, the ammonia nitrogen concentration in the pre-su...

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Abstract

The invention provides a device and method for deep denitrification by anaerobic ammonia oxidation of industrial wastewater, and relates to the technical field of sewage treatment. The device provided by the present invention includes a pre-inhibition zone, an anammox system, an O 1 AO 2 A denitrification zone and a single sludge sedimentation tank system; the pre-inhibition zone is provided with a first aeration system, an alkali addition system, an online pH tester and an online ammonia nitrogen tester; the anaerobic ammonia oxidation system is provided with a second Aeration system and immobilized packing layer; the O 1 AO 2 The denitrification zone includes a first zone of aeration, an anoxic zone and a second zone of aeration connected in series; the single sludge sedimentation tank system includes a sedimentation tank, a sludge outlet arranged at the bottom of the sedimentation tank and a water outlet at the upper part. The device provided by the invention is a single sludge precipitation system, which can ensure the stability of the system while reducing the process complexity and operating cost. The device provided by the invention is used to carry out anaerobic ammonia oxidation deep denitrification for industrial wastewater, and the total nitrogen removal rate is above 97%.

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 ammonia oxidation of industrial wastewater. Background technique [0002] The anammox process is the use of NO 2 - -N (nitrous nitrogen) oxidizes NH 4 + -N (ammonia nitrogen), generates N 2 and NO 3 - -N (nitrate nitrogen) is the most economical biological denitrification process at present, which can save 62.5% of aeration energy consumption, remove TN (total nitrogen) without adding carbon source, and reduce greenhouse gas emissions, it is a new type of Energy-saving clean production technology of high ammonia nitrogen wastewater. However, the anammox denitrification process theoretically produces part of NO 3 - -N, the theoretical denitrification efficiency is 88.7%, and the actual project is lower than 80%. In order to meet the emission standard, it is necessary to add a deep denitrification unit afte...

Claims

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Application Information

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Patent Type & Authority Patents(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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