CN214422342U

CN214422342U - Anaerobic ammonium oxidation bacterium and oxygen reactor

Info

Publication number: CN214422342U
Application number: CN202120059806.3U
Authority: CN
Inventors: 周蕾
Original assignee: Zhejiang Free Trade Zone Yiqian Environmental Protection Technology Studio
Current assignee: Zhejiang Yiqian Ecological Agricultural Technology Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-10-19
Anticipated expiration: 2031-01-11

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an anaerobic ammonium oxidation bacteria facultative reactor, wherein the bottom in the reactor is provided with a cyclone water distributor and an aerator, and the cyclone water distributor is communicated with a water inlet; the reactor is internally provided with a three-phase separator, a first reaction chamber and a second reaction chamber, the second reaction chamber is internally provided with a rotational flow aerator, and the rotational flow aerator is communicated with a Roots blower outside the reactor. The Roots blower and the spiral-flow aerator are adopted for aeration, so that the upper flow speed of the wastewater is improved, the mixing and flowing of three substances, namely strains, sewage and gas in the reactor are effectively improved, and the decomposition of the strains on ammonia nitrogen is promoted; the spiral-flow type aerator has small pressure loss, can greatly reduce the working power of the Roots blower and reduce the energy consumption of the external circulation and the internal circulation of the reactor. In addition, the reactor realizes the processes of partial nitrification coupled anaerobic ammonia oxidation and partial denitrification coupled anaerobic ammonia oxidation, and obviously improves the rate of removing total ammonia nitrogen from the wastewater.

Description

Anaerobic ammonium oxidation bacterium and oxygen reactor

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to an anaerobic ammonium oxidation bacteria facultative reactor.

Background

In the conventional biological denitrification process, nitrogen removal is realized by two independent processes of nitrification and denitrification. The traditional theory considers that the types of bacteria for nitrification and denitrification are different from the required environmental conditions, and nitrifying bacteria mainly take autotrophic bacteria and need higher dissolved oxygen in the environment; on the contrary, denitrifying bacteria are mainly heterotrophic bacteria and are suitable for growing in an anoxic environment. It is difficult to envisage carrying out both nitrification and denitrification processes simultaneously in the same reactor. However, there are many studies and practices that demonstrate that denitrification phenomena under aerobic conditions exist in various biological treatment systems. The research also finds some phenomena which are contrary to the traditional denitrification theory, such as the nitrification process can be participated by heterotrophic bacteria, the denitrification process can be carried out under aerobic conditions, NH4+ can be converted into N2 under anaerobic conditions, and the like. These studies have led to the emergence of several new denitrification processes.

The anammox process was developed by Kluyver biotech laboratory at the technical university of Delft, the netherlands in 1990. The process breaks through the basic theoretical concept in the traditional biological denitrification process. Under the anaerobic condition, ammonia is used as an electron donor, nitrate or nitrite is used as an electron acceptor, and the ammonia is oxidized into nitrogen, which saves oxygen supply by more than 60% compared with the whole-course nitrification. The use of ammonia as an electron donor also saves the carbon source required in the conventional biological denitrification process. Meanwhile, the cell yield of the anaerobic ammonium oxidation bacteria is far lower than that of the denitrifying bacteria, so the sludge yield in the anaerobic ammonium oxidation process is only about 15 percent of the sludge yield in the traditional biological denitrification process.

The existing denitrification reactor has the problems of uneven mixing, long acting time and low denitrification efficiency in the denitrification process, and then the reactor has high energy consumption and high cost.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides an anaerobic ammonium oxidation bacteria facultative reactor.

The utility model provides a technical scheme that its technical problem adopted is: an anaerobic ammonium oxidation bacteria facultative reactor comprises a reactor body, wherein the bottom of the reactor body is provided with a water inlet and a sludge discharge port, the top of the reactor body is provided with a water outlet, the reactor body is a closed container, the bottom in the reactor body is provided with a rotational flow water distributor, the rotational flow water distributor is communicated with the water inlet, and the bottom in the reactor body is also provided with a stainless steel aerator; the device comprises a body, a first reaction chamber, a second reaction chamber, a cyclone aerator and a second blast pipeline, wherein an upper three-phase separator and a lower three-phase separator are arranged in the body, the first reaction chamber is formed between the body and the lower three-phase separator, the second reaction chamber is formed between the upper three-phase separator and the lower three-phase separator, the cyclone aerator and the second blast pipeline are arranged in the second reaction chamber, one end of the second blast pipeline is communicated with the cyclone aerator, and the other end of the second blast pipeline is communicated with a Roots blower arranged outside the body; the gas-water separation device is characterized in that a gas-water separation tank is arranged at the top of the body, a first water outlet groove and a second water outlet groove are respectively formed in the lower three-phase separator and the upper three-phase separator, and the first water outlet groove and the second water outlet groove are communicated with the gas-water separation tank.

As a further improvement of the utility model: the bottom of the gas-water separation tank is provided with a circulating pipe, and the circulating pipe penetrates through the upper three-phase separator and the lower three-phase separator and is communicated with the cyclone water distributor.

As a further improvement of the utility model: anaerobic ammonium oxidation bacteria and nitrite bacteria are put into the first reaction chamber and the second reaction chamber.

As a further improvement of the utility model: the bottom in the body is provided with a first blast pipeline which is communicated with the stainless steel aerator.

As a further improvement of the utility model: the body is provided with a first manhole and a second manhole.

As a further improvement of the utility model: the body is provided with a sampling port.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model adopts the Roots blower and the spiral-flow aerator to aerate, so that a strong mixing and stirring effect can be formed in the reactor, thereby not only improving the upward flow speed of wastewater, but also effectively improving the mixing and flowing of strains, sewage and gas in the reactor, so that the activated sludge is always kept in a suspension state, the activity of microorganisms is improved, and the decomposition of the strains on ammonia nitrogen is promoted; in addition, the spiral-flow type aerator has small pressure loss and high oxygen utilization rate, can greatly reduce the working power of the Roots blower and reduce the energy consumption of the external circulation and the internal circulation of the reactor.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The invention will now be further described with reference to the accompanying description and examples:

referring to fig. 1, an anaerobic ammonium oxidation facultative reactor includes a reactor body 1, a water inlet 12 and a sludge discharge port 21 are arranged at the bottom of the reactor body 1, and a water outlet 62 is arranged at the top of the reactor body.

The body 1 is a closed container, the bottom in the body is provided with a cyclone water distributor 11, the cyclone water distributor 11 is communicated with a water inlet 12, and the cyclone water distributor utilizes water flow sprayed by rotation to lift and stir and mix sludge mixture at the bottom in the main body. The bottom in the body 1 is also provided with a stainless steel aerator 13 and a first blast pipeline 14, and the first blast pipeline 14 is communicated with the stainless steel aerator 13. The first blast pipe 14 is connected with an external blast device through a first blast port 15, and can effectively mix the incoming wastewater, air and granular sludge at the bottom in the main body under the aeration action of the stainless steel aerator 13.

An upper three-phase separator 42 and a lower three-phase separator 41 are arranged in the body 1. A first reaction chamber 51 is formed between the body and the lower three-phase separator, a second reaction chamber 52 is formed between the upper three-phase separator and the lower three-phase separator, and anaerobic ammonia oxidizing bacteria and nitrite bacteria are put into the first reaction chamber 51 and the second reaction chamber 52.

A rotational flow aerator 53 and a second blast pipe 55 are arranged in the second reaction chamber, one end of the second blast pipe 55 is communicated with the rotational flow aerator 53, and the other end is communicated with a Roots blower (not shown) arranged outside the body through a second blast port 54.

The top of the body 1 is provided with a gas-water separation tank 71, the lower three-phase separator and the upper three-phase separator are respectively provided with a first water outlet groove 43 and a second water outlet groove 45, the first water outlet groove and the second water outlet groove are communicated with the gas-water separation tank, the separated wastewater is conveyed to the gas-water separation tank 71 through the water outlet grooves, and ammonia gas is separated from the wastewater in the gas-water separation tank 71 and discharged from an exhaust port 72.

The bottom of the gas-water separation tank is provided with a circulating pipe 44 which penetrates through the upper three-phase separator and the lower three-phase separator and is communicated with the cyclone water distributor 11. After ammonia gas is separated from the wastewater in the gas-water separation tank 71, the wastewater flows downwards to the cyclone water distributor 11 from the circulating pipe 44 to form internal circulation to continue to participate in denitrification.

More preferably, the body 1 is provided with a first manhole 31 and a second manhole 32 for service.

More preferably, the body 1 is provided with a sampling port 22 for checking denitrification.

One of the specific applications of this embodiment is as follows:

wastewater enters the cyclone water distributor 11 through the water inlet 12, simultaneously the stainless steel aerator 13 is started, under the aeration of the stainless steel aerator 13 and the water flow effect of the cyclone water distributor 11, the wastewater, air and granular sludge at the bottom in the main body are mixed and react with the strains in the first reaction chamber 51, and nitrite bacteria convert half of the ammonia nitrogen into nitrite nitrogen (2 NH4+ +3O2 → 2NO2- +4H + +2H 2O); meanwhile, the anammox bacteria take carbon dioxide as an inorganic carbon source for metabolic growth, ammonia is taken as an electron donor, nitrite nitrogen is taken as an electron acceptor, and a metabolic product is ammonia gas (1 NH4+ +1NO2- → N2+2H 2O).

After the wastewater reacts with the bacteria, the sludge is isolated in the first reaction chamber by the action of the lower three-phase separator 41, and a part of wastewater containing ammonia gas flows to the gas-water separation tank 71 through the first water outlet tank 43.

The wastewater enters the second reaction chamber, and flocculent sludge wastewater and strains are continuously mixed under the aeration action of the cyclone aerator 53, so that the denitrification reaction is more complete. Under the action of the upper three-phase separator 42, the flocculent sludge is separated, and a part of the wastewater containing ammonia flows to the gas-water separation tank 71 through the second effluent tank 45.

Ammonia gas and wastewater are separated in a gas-water separation tank 71, and the ammonia gas is discharged from an exhaust port 72 of the separation tank; the waste water flows downwards to the cyclone water distributor 11 through the circulating pipe 44 to form an internal circulation to continue to participate in denitrification. The waste water continuously reduces the content of ammonia nitrogen after participating in the internal circulation, and is discharged out of the equipment from the water outlet 62 after reaching the discharge condition.

In addition, the reactor realizes the processes of partial nitrification coupled anaerobic ammonia oxidation and partial denitrification coupled anaerobic ammonia oxidation, and obviously improves the rate of removing total ammonia nitrogen from the wastewater.

In the description of the present invention, it should be understood that the terms "upper end surface", "lower end surface", "top", "bottom", "left", "right", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only for convenience of description of the present invention, and therefore, cannot be understood as a limitation to the practical use direction of the present invention.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides an anammox bacteria facultative reactor, includes reactor body (1), reactor body bottom is equipped with water inlet (12), mud discharging port (21), and the top is equipped with delivery port (62), its characterized in that:

the reactor body is a closed container, the bottom in the reactor body is provided with a cyclone water distributor (11), the cyclone water distributor (11) is communicated with a water inlet (12), and the bottom in the reactor body is also provided with a stainless steel aerator (13); an upper three-phase separator (42) and a lower three-phase separator (41) are arranged in the reactor body, a first reaction chamber (51) is formed between the reactor body and the lower three-phase separator, a second reaction chamber (52) is formed between the upper three-phase separator and the lower three-phase separator, a cyclone aerator (53) and a second blast pipeline (55) are arranged in the second reaction chamber, one end of the second blast pipeline is communicated with the cyclone aerator, and the other end of the second blast pipeline is communicated with a Roots blower arranged outside the reactor body; the reactor is characterized in that a gas-water separation tank (71) is arranged at the top of the reactor body, a first water outlet groove (43) and a second water outlet groove (45) are respectively arranged on the lower layer three-phase separator and the upper layer three-phase separator, and the first water outlet groove and the second water outlet groove are communicated with the gas-water separation tank.

2. An anaerobic ammonia oxidizing bacteria facultative reactor according to claim 1, characterized in that: the bottom of the gas-water separation tank is provided with a circulating pipe (44), and the circulating pipe penetrates through the upper three-phase separator and the lower three-phase separator and is communicated with the cyclone water distributor (11).

3. An anaerobic ammonia oxidizing bacteria facultative reactor according to claim 1, characterized in that: the bottom in the reactor body is provided with a first blast pipeline (14), and the first blast pipeline (14) is communicated with a stainless steel aerator (13).

4. An anaerobic ammonia oxidizing bacteria facultative reactor according to claim 1, characterized in that: the reactor body is provided with a first manhole (31) and a second manhole (32).

5. An anaerobic ammonia oxidizing bacteria facultative reactor according to claim 1, characterized in that: the reactor body is provided with a sampling port (22).