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Ammonia nitrogen efficient removal system and ammonia nitrogen efficient removal method based on side flow short-cut nitrification-anaerobic ammonia oxidation process

An anaerobic ammonia oxidation and short-range nitrification technology, which is applied in the field of high-efficiency ammonia nitrogen removal systems, can solve the problems of difficulty in providing suitable temperature, unstable removal efficiency, and inability to reuse regenerated liquid.

Pending Publication Date: 2020-04-10
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This high-efficiency ammonia nitrogen removal technology can solve the problems that restrict the application of ANAMMOX process due to the difficulty in providing suitable temperature for mainstream sewage treatment, low concentration of ammonia nitrogen in influent, presence of impurity ions and toxic substances, and unstable removal efficiency.
At the same time, it can also solve the problems of high regeneration cost of ammonia nitrogen adsorption materials in the prior art and the problem that the regeneration liquid cannot be reused.
[0006] Based on the fact that the current ANAMMOX process is difficult to apply in mainstream sewage due to the limitation of process conditions, the regeneration cost of ammonia nitrogen adsorption materials is relatively high, and the high concentration of ammonia nitrogen in the regeneration liquid needs further treatment. High-efficiency ammonia nitrogen removal technology route for oxyammonium oxidation process

Method used

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  • Ammonia nitrogen efficient removal system and ammonia nitrogen efficient removal method based on side flow short-cut nitrification-anaerobic ammonia oxidation process
  • Ammonia nitrogen efficient removal system and ammonia nitrogen efficient removal method based on side flow short-cut nitrification-anaerobic ammonia oxidation process
  • Ammonia nitrogen efficient removal system and ammonia nitrogen efficient removal method based on side flow short-cut nitrification-anaerobic ammonia oxidation process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] A high-efficiency ammonia nitrogen removal system based on short-range nitrification-anammox process, the flow chart is as follows figure 1 As shown, it includes ammonia nitrogen adsorption unit, heating regeneration unit, partial nitrosation unit and ANAMMOX denitrification unit. The ammonia nitrogen adsorption unit includes a sewage inlet pump 8 , a water inlet valve 11 , an ammonia nitrogen adsorption column 1 filled with adsorption materials, and an ammonia nitrogen adsorption column drain valve 15 connected in sequence.

[0112] The heating regeneration unit includes a regeneration liquid storage tank 2, the regeneration liquid storage tank 2 is connected to the ammonia nitrogen adsorption column 1 through a pipeline, and a regeneration liquid inlet pump 9 and a regeneration liquid inlet valve 12 are sequentially arranged on the connecting pipe between the two, and the regeneration liquid The storage tank 2 is equipped with regeneration liquid, and the regeneration...

Embodiment 2

[0117] For the sewage of a sewage treatment plant with an ammonia nitrogen concentration of 25mg / L, it needs to be treated to meet the requirements of GB18918-2002 Class A standard (5mg / L). The above-mentioned system is used for pilot test research, and the water treatment volume of the pilot test is 2.2 tons / day.

[0118] The sewage enters the ammonia nitrogen adsorption column 1 through the sewage inlet pump 8 through the water inlet valve 11. The ammonia nitrogen adsorption column 1 has a volume of 1L and is filled with natural zeolite. The hydraulic retention time is 5min, the adsorption operation time is 4h, the water volume that can be treated in one operation is 48L, the water volume that can be treated per hour is 12L / h, and the water volume that can be treated per day is 264L / d (calculated according to 22h), and 8 groups of ammonia nitrogen adsorption columns are connected in parallel Running, 2 sets of ammonia nitrogen adsorption columns for standby. After reaching ...

Embodiment 3

[0121] For the tail water of a sewage treatment plant with an ammonia nitrogen concentration of 15mg / L, it needs to be treated to meet the requirements of GB18918-2002 Class A Standard (5mg / L). The side-stream SHARON-ANAMMOX system is used for pilot-scale research, and the pilot-scale treatment water volume is 2.5 tons / day.

[0122] This embodiment is roughly the same as Embodiment 1, except that the regeneration solution denitrification module is a short-range nitrification-anammox unit composed of a short-range nitrification unit and anammox unit. Such as figure 2 Shown:

[0123] The short-path nitrification unit includes a short-path nitrification reactor 3', which is connected to the regeneration liquid storage tank 2 through a pipeline, and a short-path nitrification water inlet pump 10' and a first pH regulator 6 are provided on the connecting pipeline between the two. , the short-path nitrification reactor 3' is connected to the aeration pump 21, the water outlet of ...

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Abstract

The invention relates to an ammonia nitrogen efficient removal system and an ammonia nitrogen efficient removal method based on a side flow short-cut nitrification-anaerobic ammonia oxidation process.The ammonia nitrogen efficient removal system comprises an ammonia nitrogen adsorption unit, a heating regeneration unit and a regeneration liquid denitrification module, wherein the ammonia nitrogenadsorption unit comprises an ammonia nitrogen adsorption column (1) filled with an adsorption material, the heating regeneration unit comprises a regeneration liquid storage tank (2) and a regeneration liquid inlet pump (9), the regeneration liquid storage tank and the regeneration liquid inlet pump are connected in sequence, the regeneration liquid storage tank (2) is connected with the regeneration liquid inlet of the ammonia nitrogen adsorption column (1) through the regeneration liquid inlet pump (9), a regeneration liquid is heated in the regeneration liquid storage tank (2) through a sewage source heat pump (20), the regeneration liquid storage tank (2) is further connected with the ammonia nitrogen adsorption unit and recovers the regeneration liquid flowing out of the ammonia nitrogen adsorption column (1), and the regeneration liquid denitrification module is connected with the regeneration liquid storage tank (2) of the heating regeneration unit. Compared with the system andthe method in the prior art, the system and the method of the invention have the advantages of low cost, good effect and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and sewage treatment, and specifically relates to a system and method for efficiently removing ammonia nitrogen based on a side-flow short-path nitrification-anammox process. Background technique [0002] In recent years, with the development of industrialization, the pollution problem caused by ammonia nitrogen wastewater has become increasingly serious. Ammonia nitrogen is one of the important factors that destroy the balance of water body and cause eutrophication of water body. Its excessive discharge will cause great harm to the ecological environment and human body. It will not only promote eutrophication of water body, but also produce foul odor and cause obstacles to water supply. Ammonia nitrogen in sewage mainly comes from waste water and landfill leachate discharge from chemical fertilizer, tanning, breeding, petrochemical, meat processing and other industries, as well a...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/16
CPCC02F1/28C02F3/30C02F2101/16Y02B30/52
Inventor 周振王凯冲袁瑶郗家福余司颀明强羌佳鑫安莹赵晓丹
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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