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Device for enriching anaerobic ammonia-oxidizing bacteria and method for treating wastewater by using the device

A technology for enriching red bacteria and treating wastewater, which is applied in the adjustment methods of biological treatment, water treatment parameter control, chemical instruments and methods, etc. , slow growth of anammox bacteria, etc., to achieve the effect of shortening sludge retention time, shortening hydraulic retention time, and increasing holding capacity

Pending Publication Date: 2022-02-08
黑龙江红菌生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) When the traditional process is used for rapid enrichment and cultivation of anaerobic ammonium oxidation particles, organic carbon sources need to be supplemented, the sludge output is large, and the cost of sludge disposal is high. The operation of the equipment is easy to cause the loss of bacteria, which is not conducive to the enrichment of bacteria
[0007] (2) The anammox bacteria used in the traditional anammox process grow slowly and are sensitive to environmental conditions, resulting in unstable efficiency of the entire process, which limits the application of the anammox process in actual engineering
[0008] (3) Anammox bacteria have a long doubling cycle and are sensitive to conditions such as temperature, pH, dissolved oxygen and organic matter in the environment, and it is difficult to obtain enriched cultures by traditional microbiological methods

Method used

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  • Device for enriching anaerobic ammonia-oxidizing bacteria and method for treating wastewater by using the device
  • Device for enriching anaerobic ammonia-oxidizing bacteria and method for treating wastewater by using the device

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specific Embodiment approach 1

[0023] Embodiment 1: In this embodiment, a device for enriching red bacteria includes a reaction tank 10, a gas production and generation rate detection device 3, an air pump 5, an aerator 6, an agitator 7, a packing device 9, a bottom Concentration measuring device 11, PLC 12 and motor 13;

[0024] The side wall of the top of the reaction tank 10 is provided with a water inlet 1 and a nutrient addition port 4, and the side wall of the bottom of the reaction tank 10 is provided with a water outlet 2; Composed of an induction probe, the signal receiving end is connected to the induction probe, and the induction probe is arranged above the reaction tank 10; the inside of the reaction tank 10 is provided with a stirrer 7, and the motor 13 is connected to the stirrer 7 through a coupling The bottom in the reaction tank 10 is provided with a substrate concentration measuring device 11; the bottom in the reaction tank 10 is provided with several aerators 6, and the air outlet of the...

specific Embodiment approach 2

[0025] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the filler device 9 is provided with a filler, the filler is ceramsite and foam, and the volume ratio of the ceramsite to foam is 2:1 .

[0026] The foam has strong viscosity and can be adsorbed on the surface of the ceramsite; the ceramsite has a developed pore structure, which can be inclusive of the foam, and the two adhere to each other to increase the friction force, which is convenient for trapping the red fungus, so that the red fungus can be adsorbed On the surface of ceramsite and foam, both synergistically reduce the influence of agitation during aeration on the formation of anammox bacteria granular sludge, and promote the enrichment of red bacteria.

[0027] Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Specific embodiment 3: The difference between this embodiment and specific embodiments 1 or 2 is that: the water outlet 2 is provided with a water outlet filter membrane, and the pore size of the outlet water filter membrane is 0.45 μm.

[0029] Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a device for enriching anaerobic ammonia-oxidizing bacteria and a method for treating wastewater by using the device, and relates to the technical field of sewage treatment. The invention aims to solve the problems of long anaerobic ammonia oxidation starting time and slow growth of anaerobic ammonia oxidizing bacteria in the anaerobic ammonia oxidation technology. The method comprises the following steps that: an air pump is started, mixed wastewater is aerated through an aerator, the concentration of dissolved oxygen in the mixed wastewater is adjusted to 0.5-1.5 mg / L, and then the air pump is turned off; a PLC is used for controlling a substrate concentration measuring device to measure the concentration of organic matters in the mixed wastewater, when the proportion of nitrite ions to ammonium ions is lower than 1.1, the PLC is used for automatically controlling a nutrient substance adding port to add nutrient substances into a reaction tank, the operation is continued, and after the anaerobic ammonia oxidation reaction in the reaction tank is finished, the motor is turned off. The invention can obtain the device for enriching the anaerobic ammonia-oxidizing bacteria and the method for treating the wastewater by using the device.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device for enriching red bacteria and a method for treating wastewater by using the device. Background technique [0002] At present, anaerobic ammonia oxidation (Anammox) technology, as a new biological nitrogen removal technology, is a research hotspot in wastewater treatment technology. This technology does not require oxygen and exogenous organic matter, and the sludge yield is low. It is a "green" process with great application potential. [0003] Although the various advantages of the anammox process are significant, there are also disadvantages. Anammox bacteria have a long doubling cycle and are sensitive to environmental conditions such as temperature, pH, dissolved oxygen, and organic matter. It is difficult to obtain enriched cultures by traditional microbiological methods. Therefore, it is of great significance to study the operating device for high-effic...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/30C02F3/34
CPCC02F3/006C02F3/302C02F3/301C02F3/307C02F3/34C02F2305/06C02F2209/005
Inventor 徐善文赵立军
Owner 黑龙江红菌生物科技有限公司
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