CN215975411U

CN215975411U - Sewage anaerobic ammonia oxidation deamination device

Info

Publication number: CN215975411U
Application number: CN202121731443.XU
Authority: CN
Inventors: 王馨悦; 骆坚平; 侯蒙蒙; 裴仁平; 潘涛
Original assignee: Jiangsu Longtao Environmental Technology Co ltd
Current assignee: Jiangsu Longtao Environmental Technology Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-03-08
Anticipated expiration: 2031-07-28

Abstract

The utility model relates to the technical field of biological sewage treatment, in particular to a sewage anaerobic ammonia oxidation deamination device, which comprises a primary filter, an anaerobic ammonia oxidation device, a reverse osmosis device and a water collecting tank which are sequentially connected through pipelines; the concentrated water outlet and the back flushing port of the reverse osmosis device are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank through a first return pipeline and a second return pipeline. Compared with the prior art, the anaerobic ammonia oxidation deamination device for sewage provided by the utility model has the advantages of reasonable design, convenience in operation, high automatic operation degree and simplicity in operation and maintenance, and can avoid organic carbon sources and NO in sewage₂The N inhibits the activity of anaerobic ammonium oxidation bacteria, ensures the stability of a system, can further improve the removal rate of total nitrogen, does not need to add a carbon source, accelerates the start of the reactor, has the advantages of low operation energy consumption, high treatment efficiency, small secondary pollution, small occupied area and the like, simultaneously improves the continuous operation capacity and treatment effect of equipment, saves the operation cost and improves the economic benefit.

Description

Sewage anaerobic ammonia oxidation deamination device

Technical Field

The utility model relates to the technical field of biological sewage treatment, in particular to a sewage anaerobic ammonia oxidation deamination device.

Background

At present, with the continuous improvement of national and local sewage discharge standards, the requirement on nitrogen discharge is increasingly strict, and new requirements are provided for sewage denitrification technology. The traditional biological denitrification technology comprises two stages, namely nitrification and denitrification, wherein the nitrification is to oxidize ammonia nitrogen into nitrate nitrogen through nitrifying bacteria, and the denitrification is to reduce the nitrate nitrogen into nitrogen through denitrifying bacteria, so that the aim of denitrification is fulfilled. In the process, the demand for carbon sources is high, and aiming at the problem of carbon source shortage of domestic sewage in China, extra carbon sources are usually required to be added, so that the sewage treatment cost is increased. The anaerobic ammonia oxidation process has the specific advantages as a novel denitrification process, and the aim of denitrification is fulfilled by generating nitrogen by using anaerobic ammonia oxidation bacteria under the condition of oxygen deficiency by using CO2 as a carbon source, using ammonium salt (NH4-N) as an electron donor and using nitrite (NO 2-N) as an electron acceptor. The implementation of the technology needs to use nitrite in sewage as a precondition, and the best treatment effect is achieved by controlling the contents of ammonia nitrogen and nitrite nitrogen.

Compared with the nitration technology, the nitrosation technology has the advantages of low energy consumption and low operation cost. The sludge digestion liquid has high temperature, the proportion of ammonia nitrogen and alkalinity is proper, the stable nitrosation process is easy to realize by controlling the operation condition, and proper water inlet is provided for the anaerobic ammonia oxidation process. Therefore, the nitrosation and anaerobic ammonium oxidation technology is the main technical means used for the side treatment of the sludge digestion liquid at present. The problems that anaerobic ammonia oxidizing bacteria are easily influenced by the environment, the sludge doubling time is long and the like limit the wide application of the technology to a great extent. Especially when the actual wastewater is treated, the starting speed and the bacterial activity of the anaerobic ammonia oxidation reactor are influenced by the complex water quality and the fluctuation of water quantity. Thus, current nitrosation and anammox technologies face practical challenges.

Disclosure of Invention

Aiming at the defects of the background technology, the utility model provides a sewage anaerobic ammonia oxidation deamination device.

The technical scheme adopted by the utility model is as follows: the utility model provides a sewage anaerobic ammonia oxidation deamination device, the key lies in: comprises a primary filter tank, an anaerobic ammonia oxidation device, a reverse osmosis device and a water collecting tank which are sequentially connected by pipelines; a concentrated water outlet and a back flushing port of the reverse osmosis device are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank through a first return pipeline and a second return pipeline;

anaerobic ammonia oxidation ware includes first cell body, vertical many supports that are equipped with in the first cell body, many the support is the array distribution in the cell body, the support is from last to evenly being equipped with a plurality of biofilm carrier skeletons down, from last to being equipped with a plurality of annular aeration pipes down in the first cell body, same aeration fan of a plurality of annular aeration pipe coupling, the cell body top is equipped with feeding device, the cell body bottom is equipped with pH sensor, temperature sensor the interior cell wall of cell body is equipped with the heater. The effect of the proposal is that organic carbon source and NO in sewage can be avoided₂The N can inhibit the activity of anaerobic ammonium oxidation bacteria, ensure the stability of the system and further improve the total nitrogen removal rate.

Preferably, the plurality of annular aeration pipes are arranged coaxially, and the circumferences of the annular aeration pipes are gradually increased from top to bottom.

Preferably, the biological filler framework is a hollow disc-shaped framework and a net disc surface arranged on the disc-shaped framework, a biological film is formed on the net disc surface, the outer layer of the biological film is aerobic nitrosobacteria, and the inner layer of the biological film is anaerobic ammonia oxidation bacteria. The effect of this scheme is that the biofilm carrier can improve the oxygen utilization ratio, and the slow anaerobic ammonium oxidation bacterium of growth of enrichment that simultaneously can be fine for the start-up of reactor.

Preferably, the primary filter tank comprises a second tank body, and a coarse sand layer, a fine sand layer and an activated carbon layer are arranged in the second tank body from top to bottom. The method has the advantages that COD in the water is removed, the adverse effect of an organic carbon source on the anaerobic ammonia oxidation process is greatly avoided, and the treatment effect of anaerobic ammonia oxidation is improved.

Preferably, a sludge port is formed in the bottom of the first tank body, a three-way valve is arranged on the first backflow pipeline, two valve ports of the three-way valve are respectively communicated with the sludge port and a concentrated water outlet of the reverse osmosis device, the other valve port of the three-way valve is connected with a sludge pipe, and a first backflow pump is arranged on the first backflow pipeline between the three-way valve and the reverse osmosis device. The effect of this scheme is that through the membrane effect realize mud-water separation, and the sludge concentration in anaerobic reactor is maintained to the reflux of concentrated solution part, and partial discharge is handled to the sludge concentration workshop section.

Preferably, the water inlet end of the second backflow pipeline is connected with the water outlet of the water collecting tank, and the second backflow pipeline is provided with a second backflow pump. The effect of this scheme is that utilize the filtrating interval recoil washing membrane module in the reverse osmosis unit in the catch basin, guarantees reverse osmosis unit's normal operating.

Preferably, the device further comprises a controller, wherein the controller is electrically connected with the heater, the pH sensor, the aeration fan, the temperature sensor and the feeding device. The scheme has the effects that the operation of the feeding mechanism and the aeration fan can be automatically controlled, the dissolved oxygen concentration and the pH value in the reactor are controlled under the condition that ammonia oxidizing bacteria grow properly, and the metabolic activity of nitrosobacteria is limited.

Has the advantages that: compared with the prior art, the anaerobic ammonia oxidation deamination device for sewage provided by the utility model has the advantages of reasonable design, convenience in operation, high automatic operation degree and simplicity in operation and maintenance, and can avoid organic carbon sources and NO in sewage₂The N inhibits the activity of anaerobic ammonium oxidation bacteria, ensures the stability of the system, can further improve the removal rate of total nitrogen, does not need to add carbon source, accelerates the start of the reactor, has the advantages of low operation energy consumption, high treatment efficiency, small secondary pollution, small occupied area and the like, simultaneously improves the continuous operation capacity and treatment effect of equipment, and has the advantages of low operation energy consumption, high treatment efficiency, small secondary pollution, small occupied area and the likeThe operation cost is saved, and the economic benefit is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of an anammox apparatus;

fig. 3 is a schematic structural diagram of a biological filler skeleton.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1, the sewage anaerobic ammonia oxidation deamination device comprises a primary filter, an anaerobic ammonia oxidation device, a reverse osmosis device 3 and a water collecting tank 4 which are sequentially connected by pipelines; a concentrated water outlet and a back flushing port of the reverse osmosis device 3 are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank 4 through a first return pipeline 5 and a second return pipeline 6; anaerobic ammonia oxidation ware includes first cell body 21, the vertical many supports 22 that are equipped with in the first cell body 21, many support 22 is the array distribution and is in the first cell body 21, support 22 evenly is equipped with a plurality of biofilm carrier skeletons 23 from last to extremely down, be equipped with a plurality of annular aeration pipes 24 from last to extremely down in the first cell body 21, same aeration fan 7 of a plurality of annular aeration pipe 24 pipe connections, first cell body 21 top is equipped with feeding device 8, first cell body 21 bottom is equipped with pH sensor 9, temperature sensor the interior cell wall of first cell body 21 is equipped with heater 25.

Example 2

As shown in fig. 1, the sewage anaerobic ammonia oxidation deamination device comprises a primary filter, an anaerobic ammonia oxidation device, a reverse osmosis device 3 and a water collecting tank 4 which are sequentially connected by pipelines; a concentrated water outlet of the reverse osmosis device 3 is communicated with a sludge port of the anaerobic ammonia oxidation device through a first return pipeline 5, a back flushing port of the reverse osmosis device 3 is communicated with a water outlet of the water collecting tank 4 through a second return pipeline 6, and the second return pipeline 6 is provided with a second return pump 61;

the anaerobic ammonia oxidation device comprises a first tank body 21, the bottom of the first tank body 21 is provided with a sludge port, a three-way valve 51 is arranged on a first return pipeline 5, two valve ports of the three-way valve 51 are respectively communicated with the sludge port and a concentrated water outlet of a reverse osmosis device 3, the other valve port of the three-way valve 51 is connected with a sludge pipe 52, a first return pump 53 is arranged on the first return pipeline 5 between the three-way valve 51 and the reverse osmosis device 3, a plurality of supports 22 are vertically arranged in the first tank body 21, the plurality of supports 22 are distributed in the first tank body 21 in an array manner, the supports 22 are uniformly provided with a plurality of biological filler skeletons 23 from top to bottom, the biological filler skeletons 23 are disc-shaped skeletons 231 with hollow structures and mesh disc surfaces 232 arranged on the disc-shaped skeletons 231, biological membranes are formed on the mesh disc surfaces, and aerobic nitrosobacteria are arranged on the outer layers of the biological membranes, the inner layer is anaerobic ammonia oxidation bacteria, a plurality of annular aeration pipes 24 are arranged in the first tank body 21 from top to bottom, the plurality of annular aeration pipes 24 are arranged coaxially, the circumference of each annular aeration pipe 24 is gradually increased from top to bottom, a plurality of annular aeration pipes 24 are connected with the same aeration fan 7 through pipelines, a feeding device 8 is arranged at the top of the first tank body 21, a pH sensor 9 is arranged at the bottom of the first tank body 21, a temperature sensor and a heater 25, a pH sensor 9, an aeration fan 7, a temperature sensor and the feeding device 8 are electrically connected with a controller; the primary filter tank comprises a second tank body 11, and a coarse sand layer 12, a fine sand layer 13 and an activated carbon layer 14 are arranged in the second tank body 11 from top to bottom.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a sewage anaerobic ammonia oxidation deamination device which characterized in that: comprises a primary filter tank, an anaerobic ammonia oxidation device, a reverse osmosis device (3) and a water collecting tank (4) which are sequentially connected by pipelines; a concentrated water outlet and a back flushing port of the reverse osmosis device (3) are respectively communicated with the anaerobic ammonia oxidation device and the water collecting tank (4) through a first return pipeline (5) and a second return pipeline (6);

anaerobic ammonia oxidation ware includes first cell body (21), vertical many supports (22) that are equipped with in first cell body (21), many support (22) are array distribution in first cell body (21), support (22) are from last evenly to being equipped with a plurality of biofilm carrier skeletons (23) down, be equipped with a plurality of annular aeration pipes (24) from last to being equipped with down in first cell body (21), same aeration fan (7) of a plurality of annular aeration pipe (24) pipe connections, first cell body (21) top is equipped with feeding device (8), first cell body (21) bottom is equipped with pH sensor (9), temperature sensor the interior cell wall of first cell body (21) is equipped with heater (25).

2. The sewage anammox deamination device of claim 1, wherein: the annular aeration pipes (24) are arranged coaxially, and the circumferences of the annular aeration pipes (24) are gradually increased from top to bottom.

3. The sewage anammox deamination device of claim 1, wherein: the biological filler framework (23) is a hollow disc-shaped framework (231) and a net disc surface (232) arranged on the disc-shaped framework (231), a biological film is formed on the net disc surface, the outer layer of the biological film is aerobic nitrosobacteria, and the inner layer of the biological film is anaerobic ammonia oxidizing bacteria.

4. The sewage anammox deamination device of claim 1, wherein: the primary filter tank comprises a second tank body (11), and a coarse sand layer (12), a fine sand layer (13) and an activated carbon layer (14) are arranged in the second tank body (11) from top to bottom.

5. The sewage anammox deamination device of claim 1, wherein: the sludge treatment device is characterized in that a sludge opening is formed in the bottom of the first tank body (21), a three-way valve (51) is arranged on the first backflow pipeline (5), two valve openings of the three-way valve (51) are communicated with the sludge opening and a concentrated water outlet of the reverse osmosis device (3) respectively, another valve opening of the three-way valve (51) is connected with a sludge pipe (52), and a first backflow pump (53) is arranged on the first backflow pipeline (5) between the three-way valve (51) and the reverse osmosis device (3).

6. The sewage anammox deamination device of claim 1, wherein: the water inlet end of the second return pipeline (6) is connected with the water outlet of the water collecting tank (4), and the second return pipeline (6) is provided with a second return pump (61).

7. The sewage anammox deamination device of claim 1, wherein: the device also comprises a controller, wherein the controller is electrically connected with the heater (25), the pH sensor (9), the aeration fan (7), the temperature sensor and the feeding device (8).