Anaerobic ammonia oxidation biological filler and water treatment system

Abstract

The invention discloses an anaerobic ammonia oxidation biological filler and a water treatment system, the anaerobic ammonia oxidation biological filler comprises a central cylinder, a plurality of stand columns circumferentially distributed on the periphery of the central cylinder, and a plurality of fillers circumferentially distributed on the periphery of the central cylinder, the fillers are V-shaped, the tip ends are connected with the stand columns and / or the central cylinder, and the top ends of the fillers are connected with the stand columns and / or the central cylinder. The central cylinder of the anaerobic ammonia oxidation biological filler is a cylinder or a square cylinder and is fixed through stress of the central cylinder, the filler is simple and practical, the filler and the stand columns are distributed in a staggered or overlapped mode, the filler is connected through the stand columns, disassembly, replacement and maintenance after dispersion transportation and assembly are facilitated, and the filler is fixed to the central cylinder through the stand columns to form a radial structure. Further, the contact area of the filler is increased and the specific area is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment fillers, and more specifically, relates to an anaerobic ammonium oxidation biological filler and a water treatment system. Background Art

[0002] As a new type of high-efficiency and low-energy water treatment technology, anaerobic ammonium oxidation technology has high requirements for equipment. There is still a lack of mature technology and related equipment for anaerobic ammonium oxidation. Its engineering still has a lot of room for optimization in terms of treatment effect, stability and investment cost. However, anaerobic ammonium oxidizing bacteria have a long generation time and are difficult to cultivate, resulting in low denitrification load. Effective retention in water treatment systems is the key to realizing anaerobic ammonium oxidation technology. Adding fillers and providing microbial attachment carrier fillers can achieve the enrichment of anaerobic ammonium oxidizing bacteria in water treatment systems, which becomes the basis for the stable application of anaerobic ammonium oxidation technology.

[0003] Biological fillers can provide microorganisms with attachment carriers and differentiated growth environments, enrich the biological phase in the biological pool, and enhance the stability of the water treatment system. However, several widely used fillers currently have many problems in the field of anaerobic ammonia oxidation technology, such as small specific surface area of ​​fillers, low attachment rate, low denitrification load, high addition costs, and difficult transportation. Summary of the invention

[0004] The purpose of the present invention is to provide an anaerobic ammonium oxidation biological filler to solve the problem of small specific area of ​​the existing filler in view of the shortcomings of the prior art.

[0005] In order to achieve the above object, the present invention provides an anaerobic ammonium oxidation biological filler, comprising:

[0006] Center tube;

[0007] A plurality of columns, wherein the plurality of columns are circumferentially distributed on the outer circumference of the central tube;

[0008] A plurality of fillers are circumferentially distributed on the outer circumference of the central tube, the fillers are V-shaped, the tip of the fillers is connected to the column and / or the central tube, and the opening faces away from the central tube.

[0009] Optionally, the filler includes a connecting portion, the connecting portion is connected to the central tube or the column, and load portions are symmetrically arranged at both ends of the connecting portion.

[0010] Optionally, the load-bearing portion is a honeycomb structure.

[0011] Optionally, the cross section of the central tube is rectangular, the cross section of the column is cross-shaped, four columns form a tic-tac-toe structure around the central tube, a snap-fit ​​gap is formed between two adjacent columns, and the filler is arranged between two adjacent columns.

[0012] Optionally, the axis of the central tube is perpendicular to the direction of water flow.

[0013] Optionally, a pressure cover is further included, a staple is provided on one side of the pressure cover, and one end of the staple passes through the filler and is connected to the clamping gap.

[0014] Optionally, a stopper is further included, and the stopper is arranged between two adjacent fillers.

[0015] Optionally, the stopper cooperates with the gland to position the filler.

[0016] The present invention also provides a water treatment system, comprising the above-mentioned anaerobic ammonium oxidation biological filler.

[0017] Optionally, a hanging net is further included, and a plurality of the anaerobic ammonium-oxidizing biological fillers are arranged on the warp and / or weft of the hanging net.

[0018] The present invention provides an anaerobic ammonium oxidation biological filler, which has the following beneficial effects:

[0019] The central tube of the anaerobic ammonia oxidation biological filler is a round tube or a square tube. It is simple and practical to fix the filler with force through the central tube. The filler and the columns are staggered or overlapped. The filler is connected by the columns to facilitate dispersed transportation and disassembly, replacement and maintenance after assembly. The columns fix the filler on the central tube to form a radial structure, thereby increasing the contact area of ​​the filler and improving the specific area.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0022] Figure 1 A schematic structural diagram of an anaerobic ammonium oxidation biological filler according to an embodiment of the present invention is shown.

[0023] Figure 2 A top view of an anaerobic ammonium-oxidizing biological filler according to an embodiment of the present invention is shown.

[0024] Figure 3 A schematic structural diagram of a hanging net for anaerobic ammonium oxidation biological filler according to an embodiment of the present invention is shown.

[0025] Description of reference numerals:

[0026] 1. Center tube; 2. Column; 3. Filler; 4. Block; 5. Pressure cover; 6. Hanging net; 7. Aeration system. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] like Figure 1-3 As shown, an anaerobic ammonium oxidation biological filler comprises:

[0029] Center tube 1;

[0030] A plurality of columns 2, wherein the plurality of columns 2 are circumferentially distributed on the outer circumference of the central tube 1;

[0031] A plurality of fillers 3 are circumferentially distributed on the outer circumference of the central tube 1 . The fillers 3 are V-shaped, with the tip connected to the column 2 and / or the central tube 1 , and the opening faces away from the central tube 1 .

[0032] Specifically, the central tube 1 is a cylinder or a square tube, which is simple and practical to fix by force through the central tube 1. The fillers 3 and the columns 2 are staggered or overlapped. The fillers 3 are connected by the columns 2 to facilitate dispersed transportation and disassembly, replacement and maintenance after assembly. The columns 2 fix the fillers 3 on the central tube 1 to form a radial structure, thereby increasing the contact area of ​​the fillers and improving the specific area.

[0033] In this embodiment, the filler 3 includes a connecting portion, which is connected to the central tube 1 or the column 2, and the load portions are symmetrically arranged at both ends of the connecting portion.

[0034] Furthermore, the filler 3 may be a rigid structure or a flexible structure. The flexible structure is symmetrically bent to ensure uniform force of water flow impact.

[0035] In this embodiment, the load-bearing portion is a honeycomb structure.

[0036] Specifically, the honeycomb structure protects microorganisms and increases the surface area and microorganism attachment rate.

[0037] Further, the filler 3 body is made of any one of polyurethane, modified polyurethane, polypropylene, modified polypropylene or nylon or any combination of materials.

[0038] In this embodiment, the cross-section of the central tube 1 is rectangular, the cross-section of the column 2 is cross-shaped, four columns 2 form a tic-tac-toe structure around the central tube 1, a snap-fit ​​gap is formed between two adjacent columns 2, and the filler 3 is arranged between two adjacent columns 2.

[0039] Specifically, the splicing structure is convenient for assembly and use.

[0040] In this embodiment, the axis of the central tube 1 is perpendicular to the water flow direction.

[0041] Specifically, the contact area is enlarged by setting it perpendicular to the water flow direction.

[0042] In this embodiment, a pressure cover 5 is further included. A staple is arranged on one side of the pressure cover 5. One end of the staple passes through the filler 3 and is connected to the clamping gap.

[0043] Specifically, the pressure cover 5 fixes the filler 3 through the clamping gap with staples.

[0044] In this embodiment, a stopper 4 is further included, and the stopper 4 is arranged between two adjacent fillers 3 .

[0045] Specifically, the stopper 4 is used to prevent the adjacent fillers 3 from shaking due to impact, and the pressure cover 5 is used to fix the fillers 3.

[0046] In this embodiment, the stopper 4 cooperates with the pressure cover 5 to position the filler 3 .

[0047] The present invention also provides a water treatment system, comprising the above-mentioned anaerobic ammonium oxidation biological filler 3.

[0048] In this embodiment, a hanging net 6 is further included, and a plurality of anaerobic ammonium-oxidizing biological fillers 3 are inserted on the warp and / or weft of the hanging net 6 .

[0049] Specifically, a plurality of anaerobic ammonium oxidation biological fillers 3 are connected via a hanging net 6 to adapt to use in water treatment systems of different specifications.

[0050] Example 1

[0051] When an anaerobic ammonium oxidation biological filler is used in this embodiment, the specific process is as follows:

[0052] First, multiple anaerobic ammonium oxidation biological fillers 3 are connected in series by steel wires, and then multiple anaerobic ammonium oxidation biological fillers 3 are arranged at intervals, and the two ends are fixed by ropes or steel pipes to form a mesh structure. The mesh structure is arranged perpendicular to the water flow direction, and an aeration system 7 is set below the mesh structure.

[0053] Example 2

[0054] In this embodiment, a water treatment system is used, taking the synchronous short-range nitrification and anaerobic ammonium oxidation reaction as an example:

[0055] The sewage retention time is 8 days, and the operation is continued for 1 month. The average effluent total nitrogen is less than 70 mg / L, and the average ammonia nitrogen is less than 45 mg / L. The anaerobic ammonia oxidation biological filler and water treatment system involved in the present invention have high specific surface area, high microbial attachment rate, simple and practical structure, and can increase the denitrification load of sewage treatment by 30-40%. The water quality reaches the effect of Table 1 (units are all mg / L).

[0056] Water quality indicators Influent water quality Outlet water quality CODcr ≤6000 ≤500 <![CDATA[BOD5]]> ≤3000 ≤300 <![CDATA[NH3-N]]> ≤2500 ≤45 TN ≤3000 ≤70

[0057] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An anaerobic ammonium oxidation biological filler, which is mainly characterized by comprising: Center tube; A plurality of columns, wherein the plurality of columns are circumferentially distributed on the outer circumference of the central tube; A plurality of fillers are circumferentially distributed on the outer circumference of the central tube, the fillers are V-shaped, the tip of the fillers is connected to the column and / or the central tube, and the opening faces away from the central tube.

2. The anaerobic ammonium oxidation biological filler according to claim 1, characterized in that: The filler includes a connecting portion, the connecting portion is connected to the central tube or the column, and load portions are symmetrically arranged at both ends of the connecting portion.

3. The anaerobic ammonium oxidation biological filler according to claim 1, characterized in that: The load-bearing portion is a honeycomb structure.

4. The anaerobic ammonium oxidation biological filler according to claim 1, characterized in that: The cross section of the central tube is rectangular, the cross section of the column is cross-shaped, four columns form a tic-tac-toe structure around the central tube, a clamping gap is formed between two adjacent columns, and the filler is arranged between two adjacent columns.

5. The anaerobic ammonium oxidation biological filler according to claim 1, characterized in that: The axis of the central tube is perpendicular to the water flow direction.

6. The anaerobic ammonium oxidation biological filler according to claim 4, characterized in that: It also includes a pressure cover, one side of which is provided with a staple, and one end of the staple passes through the filler and is connected to the clamping gap.

7. The anaerobic ammonium oxidation biological filler according to claim 6, characterized in that: A stopper is also included, and the stopper is arranged between two adjacent fillers.

8. The anaerobic ammonium oxidation biological filler according to claim 7, characterized in that: The stopper cooperates with the gland to position the filler.

9. A water treatment system, characterized in that: It comprises the anaerobic ammonium oxidation biological filler according to any one of claims 1-8.

10. The water treatment system according to claim 9, characterized in that: It also includes a hanging net, and a plurality of the anaerobic ammonium-oxidizing biological fillers are inserted on the warp and / or weft of the hanging net.

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