Skid-mounted anaerobic ammonia oxidation coupling reactor

Abstract

The utility model relates to the technical field of sewage treatment devices, and discloses a skid-mounted anaerobic ammonia oxidation coupling reactor which comprises a container type box body, the box body is divided into an anaerobic zone, an aerobic zone, a sludge settling zone, an anaerobic ammonia oxidation zone, a buffer pool and a water outlet pool which are connected in sequence by partition plates, the anaerobic ammonia oxidation zone is provided with special filler, and the buffer pool is provided with special filler. The specially-made filler forms a mounting structure which can be taken out independently, in different areas or integrally through a specially-made filler frame; the specially-made filler is a spherical filler string, connecting ends are reserved at the two ends of the spherical filler string, and a plurality of bearing parts are arranged on the filler frame and used for bearing the spherical filler string. According to the utility model, the container type box body is adopted to form a skid-mounted structure, so that the skid-mounted structure is convenient to integrally mount, move and assemble and occupies a smaller area; meanwhile, the specially-made filler is installed through the specially-made filler frame and can be taken out independently, in a partitioned mode or in an integral mode, and the filler can be overhauled and replaced without emptying the water pool.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment devices, in particular to a skid-mounted anaerobic ammonia oxidation coupling reactor. Background Art

[0002] The composition of domestic waste leachate is complex, containing a large amount of toxic and harmful substances, heavy metals, etc. It has the characteristics of high ammonia nitrogen and high organic matter concentration, and the organic pollutants are mostly non-biodegradable compounds, which leads to a serious imbalance in the carbon-nitrogen ratio of the leachate. If it is not properly disposed of and directly discharged into the environment, it will cause great potential harm to the surrounding environment. Therefore, the leachate must be treated before it can be discharged in compliance with the standards.

[0003] At present, common sewage treatment processes include nitrification and denitrification denitrification process, short-cut nitrification and anaerobic ammonia oxidation process. Traditional nitrification and denitrification denitrification process requires a large amount of carbon source materials such as methanol, ethanol, sodium acetate, etc., and there are problems such as high aeration volume, large greenhouse gas emissions, and large sludge volume. Short-cut nitrification and anaerobic ammonia oxidation process converts ammonia nitrogen into nitrite nitrogen and enriches it by controlling temperature, dissolved oxygen, free ammonia concentration, and free nitrite nitrogen concentration. Part of the nitrite nitrogen is converted into nitrogen gas through denitrification and consumes degradable organic pollutants in the leachate. Further, anaerobic ammonia oxidizing bacteria use ammonia nitrogen as an electron donor to autotrophically reduce nitrite nitrogen to nitrogen gas under anaerobic conditions. It has the characteristics of low oxygen consumption, fast reaction speed, small amount of residual sludge, small amount of greenhouse gas emissions, and no need to add carbon source. Summary of the invention

[0004] The purpose of the utility model is to provide a skid-mounted anaerobic ammonium oxidation coupling reactor which is easy to assemble, occupies less space, and is convenient for maintenance and replacement of fillers, so as to at least provide a beneficial choice or create conditions for solving one or more technical problems existing in the prior art.

[0005] In order to achieve the above objectives, the utility model adopts the following technical solutions.

[0006] A skid-mounted anaerobic ammonium oxidation coupled reactor comprises a container-type box body, which is divided into an anaerobic zone, an aerobic zone, a sludge sedimentation zone, an anaerobic ammonium oxidation zone, a buffer tank and an outlet tank connected in sequence by partitions; a special filler is installed in the anaerobic ammonium oxidation zone, and the special filler is formed into an installation structure that can be removed individually, in sections or as a whole through a special filler frame; the special filler is a spherical filler string, and connection ends are left at both ends of the spherical filler string, and a plurality of supporting parts are provided on the filler frame for supporting the spherical filler string.

[0007] More preferably, the special filler and the special filler frame are provided in the anaerobic zone and / or the aerobic zone.

[0008] More preferably, the specially made filling frame in each zone fits tightly against the box wall.

[0009] More preferably, the supporting portion is a protrusion arranged on the inner wall of the filler frame.

[0010] More preferably, the supporting portion is a groove directly opened on the inner wall of the filler frame, and the spherical filler strings at different heights are superimposed on each other.

[0011] More preferably, the anaerobic zone, the aerobic zone and / or the anaerobic ammonium oxidation zone are respectively divided into a number of different small reaction zones, and a corresponding special filler and a special filler frame are provided in each small reaction zone.

[0012] More preferably, a micro-nano bubble generator is connected to the aerobic zone.

[0013] More preferably, an inclined plate settler is provided in the sludge settling area, and a mud guard is provided on the lower side of the inclined plate settler.

[0014] More preferably, a reflux pipe is connected between the water outlet and the water inlet of the reactor, and a heater for heating the reflux water is installed on the reflux pipe.

[0015] The utility model has at least the following beneficial effects.

[0016] The utility model provides a skid-mounted anaerobic ammonium oxidation coupling reactor, which adopts a container-type box to form a skid-mounted structure, which is convenient for overall installation and movement, easy to assemble, and occupies less space; at the same time, by setting up anaerobic zones, aerobic zones, sludge sedimentation zones, anaerobic ammonium oxidation zones, buffer pools and outlet pools in series, when working, water enters the front end of the reactor and flows through various functional partitions, which can better prevent hydraulic short-flow, improve the treatment effect, and reduce the impact on microbial activity caused by uneven water inflow. In addition, the special filler is installed through a special filler frame, which can be taken out individually, in partitions or as a whole, and the filler can be inspected and replaced without emptying the pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of a skid-mounted anaerobic ammonium oxidation coupling reactor provided by the utility model.

[0018] Figure 2 Shown is a top view of the skid-mounted anaerobic ammonium oxidation coupling reactor provided by the utility model.

[0019] Figure 3 Shown is a schematic diagram of the box frame.

[0020] Figure 4 Shown is a schematic diagram of the assembly of special packing and packing frame.

[0021] Figure 5 Shown is a schematic diagram of the vertical distribution of special fillers within the filler frame.

[0022] Figure 6 Shown is a schematic structural diagram of an inclined plate settler.

[0023] Description of Figure Numbers.

[0024] 1: box body, 2: special filler, 3: filler frame, 4: inclined plate settler, 5: mudguard.

[0025] 101: anaerobic zone, 102: aerobic zone, 103: sludge sedimentation zone, 104: anaerobic ammonium oxidation zone, 105: buffer tank, 106: effluent tank. DETAILED DESCRIPTION

[0026] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, and cannot be understood as limiting the utility model.

[0027] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention.

[0028] Reference Figure 1-Figure 3 As shown, a skid-mounted anaerobic ammonium oxidation coupled reactor adopts a container-type box body 1, which is convenient for overall installation and movement. The box body 1 is divided into an anaerobic zone 101, an aerobic zone 102, a sludge sedimentation zone 103, an anaerobic ammonium oxidation zone 104, a buffer pool 105 and an outlet pool 106 by partitions. The box body 1 is made of stainless steel as a whole, which is effectively corrosion-resistant; the packing frames of each zone fit tightly with the pool wall to reduce the occurrence of short-circuiting; the anaerobic ammonium oxidation zone 104 is installed with special packing, which is installed through a special packing frame and can be taken out individually, in sections or as a whole, so there is no need to empty the pool to carry out maintenance and replace the packing.

[0029] Reference Figure 4 , Figure 5As shown, the special filler 2 is a ball-shaped filler string, and connection ends are left at both ends of the ball-shaped filler string; a plurality of supporting parts 301 are provided on the filler frame 3 to support the ball-shaped filler string. In this embodiment, it is preferred that the supporting part 301 is a protrusion provided on the inner wall of the filler frame 3, so as to facilitate the control of the spacing between the ball-shaped filler strings at different heights; in some embodiments, the supporting part is a groove directly opened on the inner wall of the filler frame, and the ball-shaped filler strings at different heights are superimposed on each other; it is not limited to this embodiment. In some embodiments, the above-mentioned special filler and special filler frame are also provided in the anaerobic zone 101 and / or the aerobic zone 102.

[0030] According to different actual needs, the anaerobic zone 101, the aerobic zone 102 and the anaerobic ammonium oxidation zone 104 are also divided into a number of different small reaction zones, and a corresponding filler frame is provided in each small reaction zone to facilitate maintenance and replacement of fillers.

[0031] To facilitate aeration of the aerobic zone 102, a micro-nano bubble generator 107 is preferably connected to the aerobic zone 102. The micro-nano bubble aeration method can provide oxygen for the short-range nitrification reaction and also provide pneumatic stirring for the water body, which not only achieves the homogenization of pollutants, but also increases the mass transfer effect between active microorganisms and pollutants, thereby improving the denitrification treatment effect of the reactor.

[0032] Reference Figure 3 , Figure 6 As shown, an inclined plate settler 4 is provided in the sludge settling area 103, and a mud guard 5 is provided at the lower side of the inclined plate settler 4. Obviously, those skilled in the art may adopt other types of sludge settling devices that are currently known or will be realized in the future to replace the inclined plate settler according to different actual needs, and are not limited to this embodiment.

[0033] In order to avoid uneven temperature caused by local heating in the reactor, in this embodiment, a reflux pipe is preferably connected between the water outlet and the water inlet of the reactor, and a heater for heating the reflux water is preferably installed on the reflux pipe. In this way, combined with the insulation outside the reactor, the reactor temperature can be relatively stable in the range of 25 to 35°C.

[0034] The present embodiment provides a skid-mounted anaerobic ammonium oxidation coupled reactor, whose working principle is: water enters the front end of the reactor and flows through various functional partitions, which can better prevent hydraulic short-circuiting, improve the treatment effect, and reduce the impact on microbial activity caused by uneven water inlet.

[0035] Compared with the traditional nitrification and denitrification process, the skid-mounted anaerobic ammonia oxidation coupled reactor provided in this embodiment utilizes a short-range nitrification and denitrification process, which not only greatly reduces the footprint, but also is easy to assemble, and has the advantages of low aeration and carbon source requirements, low energy consumption, small greenhouse gas emissions, and low sludge production, which can effectively reduce operating costs; in the case of treating high-ammonia nitrogen organic wastewater, this reactor utilizes the characteristics of nitrification reaction consuming alkalinity, denitrification reaction and anaerobic ammonia oxidation reaction increasing alkalinity, and achieves alkalinity production and consumption balance by strictly controlling dissolved oxygen at 0.2 ~ 0.5 mg / L and temperature at 25 ~ 35 ° C, which is beneficial to maintaining the pH stability of the reactor and ensuring the stability of microbial activity inside the reactor.

[0036] It should be noted that the electrical equipment (submersible agitator, submersible sewage pump, micro-nano bubble generator and its distribution cabinet) that cooperate with the reactor, the circulation pipeline, and the auxiliary structural design of the insulation layer, cover, aeration pipe, ladder, sampling port, etc. on the box body are all common technical knowledge mastered by technical personnel in this field and will not be described in detail here.

[0037] It should also be noted that, in the description of the present invention, directional words such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, "at least" means one or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise specified and limited, the terms "assembly", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the utility model, unless otherwise specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "below" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the height of the second feature. A first feature being "above", "below" and "below" a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the second feature.

[0041] Through the description of the above structure and principle, those skilled in the art should understand that the present invention is not limited to the above specific implementations. Improvements and substitutions based on the present invention using the known technology in the art fall within the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims and their equivalents. Parts not described in the specific implementations are prior art or common knowledge.

Claims

1. A skid-mounted anaerobic ammonium oxidation coupled reactor, characterized in that: It comprises a container-type box body, which is divided into an anaerobic zone, an aerobic zone, a sludge sedimentation zone, an anaerobic ammonium oxidation zone, a buffer pool and an outlet pool connected in sequence by partitions; a special filler is installed in the anaerobic ammonium oxidation zone, and the special filler is formed into an installation structure that can be taken out individually, in sections or as a whole through a special filler frame; the special filler is a spherical filler string, and connecting ends are left at both ends of the spherical filler string, and a plurality of supporting parts are provided on the filler frame for supporting the spherical filler string.

2. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 1, characterized in that: The special filler and the special filler frame are arranged in the anaerobic zone and / or the aerobic zone.

3. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 2, characterized in that: The specially made filling frames in each zone are tightly fitted to the box wall.

4. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 1, characterized in that: The supporting portion is a protruding portion arranged on the inner wall of the filler frame.

5. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 1, characterized in that: The supporting portion is a groove directly opened on the inner wall of the filler frame, and the spherical filler strings at different heights are superimposed on each other.

6. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 1, characterized in that: The anaerobic zone, the aerobic zone and / or the anaerobic ammonium oxidation zone are respectively divided into a number of different small reaction zones, and a corresponding special filler and a special filler frame are arranged in each small reaction zone.

7. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 1, characterized in that: The aerobic zone is connected with a micro-nano bubble generator.

8. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 1, characterized in that: An inclined plate settler is provided in the sludge settling area, and a mud guard is provided at the lower side of the inclined plate settler.

9. The skid-mounted anaerobic ammonium oxidation coupled reactor according to claim 1, characterized in that: A reflux pipe is connected between the water outlet and the water inlet of the reactor, and a heater for heating the reflux water is installed on the reflux pipe.

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