Hexagonal palace lantern ceramic membrane bioreactor and system thereof

Abstract

The utility model provides a hexagonal palace lantern ceramic membrane bioreactor and a system thereof, the hexagonal palace lantern ceramic membrane bioreactor comprises a ceramic membrane bioreactor, a water inlet pump, a raw water tank, a water inlet pipe, an air inlet pipe, a water outlet pipe, a water outlet pump and a purified water tank, the interior of a ceramic membrane tank (1) is divided into a plurality of same cavities through ceramic membrane assemblies (2), and the ceramic membrane assemblies (2) are mounted in a multilayer stacking manner; according to the utility model, the hexagonal palace lantern ceramic membrane bioreactor is used for treating sewage, and the reactor is divided into a plurality of same cavities by stacking the vertically placed ceramic membranes, so that uniform aeration is facilitated, activated sludge in the reactor can be in uniform contact with oxygen, and the problem of non-uniform aeration of a traditional aeration tank is avoided; as the reactor is divided into a plurality of same cavities by the ceramic membranes, uniform shear stress distribution on two sides of the membranes is successfully realized by utilizing the symmetry of fluid, so that gas uniformly enters each cavity.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to a hexagonal lantern ceramic membrane bioreactor and a system thereof. Background Art

[0002] The advantages of the activated sludge process in treating domestic sewage, urban sewage and organic industrial wastewater have been fully utilized. In addition to the degradation of organic pollutants, remarkable results have been achieved in the theory of biological denitrification and phosphorus removal, giving the activated sludge treatment process good denitrification and phosphorus removal functions.

[0003] We have also achieved results in improving the composition and operation of activated sludge process systems, simplifying their composition and making their operation more flexible and diverse, thereby enhancing the scientific nature and practicality of the process systems. We have also developed a process system that simultaneously degrades organic pollutants and removes nitrogen and phosphorus.

[0004] Currently, activated sludge processes represent the most significant technological advancements and innovations in the field of biological wastewater treatment worldwide, and are the most widely used. They are the preferred treatment technology for municipal wastewater and organic industrial wastewater. It is foreseeable that activated sludge processes will continue to develop and play a greater role in my country's water pollution prevention and control efforts. Currently, activated sludge processes are the mainstay of water pollution prevention and control technologies.

[0005] However, common devices have uneven aeration in the aeration tank, which will lead to insufficient or excessive dissolved oxygen in the water, and the biological bacteria cannot survive normally, thereby inhibiting the sludge activity, insufficient nitrification, and excessive ammonia nitrogen, affecting the effluent water quality.

[0006] Typical prior art CN112607852B discloses a membrane bioreactor and a water purification method, including a reactor, an aeration system, a catalytic ceramic membrane assembly, a dosing system, and a water outlet control system; the aeration system is connected to the reactor; the catalytic ceramic membrane assembly is arranged in the reactor and includes at least one catalytic ceramic membrane; the ceramic membrane assemblies are arranged in parallel, which may cause problems such as uneven aeration of the ceramic membranes in different flow directions.

[0007] Based on the above problems, the utility model proposes a hexagonal lantern ceramic membrane bioreactor and its system to solve the problem of uneven aeration during aeration of the aeration tank, resulting in insufficient dissolved oxygen in the water. Utility Model Content

[0008] In order to solve the above problems, the present invention proposes a hexagonal lantern ceramic membrane bioreactor and its system. The present invention solves the problem of uneven aeration in the prior art by changing the structure of the ceramic membrane bioreactor, and can solve the problem of uneven aeration during aeration of the aeration tank, resulting in insufficient dissolved oxygen in the water.

[0009] In order to solve the above problems, the technical solution of the present utility model is as follows:

[0010] In the first aspect, the utility model discloses a ceramic membrane assembly, which includes a central water outlet pipe and a sleeve arranged outside the central water outlet pipe. The outer peripheral wall of the sleeve is provided with a plurality of grooves, and the grooves are used to insert ceramic membrane fins. Optionally, the grooves are evenly arranged.

[0011] Furthermore, the central water outlet pipe is connected to a plurality of return water branches, one end of each of which is connected to the ceramic membrane fins and the other end is connected to the central water outlet pipe. The return water branches are used to transport water purified by the ceramic membrane fins to the clean water tank. Preferably, the central water outlet pipe is connected to the return water branches by providing a multi-way water pipe.

[0012] Furthermore, there are n ceramic membrane fins, where n is a natural number ranging from 2 to 8, and preferably, n is 4 or 6.

[0013] Furthermore, the ceramic membrane fin is inserted and positioned along the groove of the outer peripheral wall of the sleeve outside the central water outlet pipe.

[0014] Furthermore, the ceramic membrane fins are provided with several layers, such as when placed in a ceramic membrane bioreactor, and can be particularly provided with 1-3 layers, typically 2 layers.

[0015] In the second aspect, the present invention provides a hexagonal lantern ceramic membrane bioreactor, including a ceramic membrane tank, a ceramic membrane assembly, an aeration plate, a membrane assembly slot, a water outlet, a water inlet, and a drain. The ceramic membrane assembly is installed inside the ceramic membrane tank, the aeration plate is arranged at the bottom of the ceramic membrane tank, the inner wall of the ceramic membrane tank is provided with a membrane assembly slot, the water inlet is arranged on the upper side of the ceramic membrane tank, the water outlet is arranged in the middle of the ceramic membrane tank, and the drain is arranged on the bottom side of the ceramic membrane tank. The interior of the ceramic membrane tank is divided into multiple identical chambers by the ceramic membrane assembly, and the ceramic membrane assembly is installed in a multi-layer stack.

[0016] Furthermore, the ceramic membrane assembly adopts the ceramic membrane assembly of the first aspect.

[0017] Furthermore, the membrane assembly slots correspond one-to-one or selectively correspond to a plurality of grooves provided on the outer peripheral wall of the sleeve of the ceramic membrane assembly, so as to adaptively install the ceramic membrane fins.

[0018] Furthermore, each layer of the ceramic membrane assembly includes multiple ceramic membrane fins, the angles between each ceramic membrane fin are the same, and the lines connecting the vertices of the outer edges form a regular polygon; the ceramic membrane fins divide the ceramic membrane tank cavity into multiple identical cavities, and utilize the symmetry of the fluid to achieve uniform shear stress distribution on both sides of the membrane, so that the gas enters each cavity evenly.

[0019] Furthermore, the water outlet from each ceramic membrane of the ceramic membrane assembly is collected to the water outlet through multiple channels.

[0020] Furthermore, the aeration plate is installed below the ceramic membrane assembly, with a gap between the aeration plate and the ceramic membrane assembly.

[0021] Furthermore, the ceramic membrane tank adopts a cylindrical barrel design, the central water outlet pipe is installed at the center of the circle, and the center of the regular polygon formed by the ceramic membrane assembly is at the same position as the center of the circle.

[0022] In the third aspect, the utility model also provides a hexagonal lantern ceramic membrane bioreactor system, including a raw water tank, a hexagonal lantern ceramic membrane bioreactor disclosed in the second aspect, a water inlet pipe, a water inlet pump, a blower, an air inlet pipe, a water outlet pump, a water outlet pipe, a clean water tank, a connecting pipe, a water inlet valve, a water outlet valve, and an air inlet valve.

[0023] Furthermore, the raw water tank is connected to the water inlet pump, the water inlet valve, and the reactor water inlet in sequence through the water inlet pipe, the reactor water outlet is connected to the water outlet pump, the water outlet valve, and the clean water tank in sequence through the water outlet pipe, and the connecting pipe on the aeration plate at the bottom of the reactor is connected to the air inlet valve and the blower in sequence through the air inlet pipe. The reactor adopts the aforementioned hexagonal lantern ceramic membrane bioreactor.

[0024] Furthermore, the blower is used to perform timed aeration on the aeration disk in the reactor, providing a suitable dissolved oxygen concentration for the activated sludge in the ceramic membrane tank, so that it can complete nitrification and denitrification and purify ammonia nitrogen in the water.

[0025] Furthermore, the central water outlet pipe is connected to the water outlet pipe, which is connected to the water outlet valve through the water outlet pump and then connected to the clean water tank.

[0026] Compared with the prior art, the advantages and positive effects of the present invention are:

[0027] 1. The utility model uses a hexagonal lantern ceramic membrane bioreactor to treat sewage. The reactor is divided into multiple identical cavities by stacking some vertically placed ceramic membranes, which is conducive to uniform aeration, so that the activated sludge in the reactor can be evenly contacted with oxygen, avoiding the problem of uneven aeration in traditional aeration tanks.

[0028] 2. Since the ceramic membrane divides the reactor into multiple identical cavities, the symmetry of the fluid is utilized to successfully achieve uniform shear stress distribution on both sides of the membrane, so that the gas enters each cavity evenly.

[0029] 3. The new ceramic membrane fin is easy to install and replace. It can be replaced by insertion, avoiding multiple disassembly and damage to the membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of a hexagonal lantern ceramic membrane bioreactor system of the utility model;

[0031] Figure 2 This is a structural diagram of a hexagonal lantern ceramic membrane bioreactor of the present invention;

[0032] Figure 3 This is a schematic structural diagram of a ceramic membrane assembly of the present utility model;

[0033] Figure 4 This is a schematic diagram of the multi-way connection at the water outlet of the ceramic membrane of the present invention.

[0034] Legend:

[0035] 1. Ceramic membrane tank; 2. Ceramic membrane assembly; 3. Aeration plate; 4. Membrane assembly slot; 5. Water outlet; 6. Water inlet; 7. Drain outlet; 8. Air inlet pipe; 9. Raw water tank; 10. Water inlet pipe; 11. Water inlet pump; 12. Blower; 13. Air inlet pipe; 14. Water outlet pump; 15. Water outlet pipe; 16. Clean water tank; 17. Connecting pipe; 18. Water inlet valve; 19. Water outlet valve; 20. Air inlet valve.

[0036] Figure numerals: 201-206 are the first layer of ceramic membranes; Figure numerals: 207-212 are the second layer of ceramic membranes; Figure numerals: 501-506 are the first layer of water outlets; Figure numerals: 507-512 are the second layer of water outlets. DETAILED DESCRIPTION

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. Example 1

[0038] like Figure 1-4 As shown; a ceramic membrane assembly (2), the ceramic membrane assembly (2) comprises a central water outlet pipe, and a sleeve sleeved outside the central water outlet pipe, the outer peripheral wall of the sleeve is provided with 6 grooves, the grooves are used to insert ceramic membrane fins, and the grooves are evenly arranged.

[0039] The central water outlet pipe is connected to several return water branches, one end of which is connected to the ceramic membrane fins and the other end is connected to the central water outlet pipe. The return water branches are used to transport water purified by the ceramic membrane fins to the clean water tank. The central water outlet pipe is connected to the return water branches by setting a multi-way water pipe.

[0040] There are six ceramic membrane fins.

[0041] The ceramic membrane fin is inserted and positioned along the groove of the outer peripheral wall of the sleeve outside the central water outlet pipe.

[0042] The ceramic membrane fin is provided with two layers. Example 2

[0043] like Figures 1 to 4 As shown:

[0044] A hexagonal lantern ceramic membrane bioreactor comprises a ceramic membrane tank 1, a ceramic membrane assembly 2, an aeration plate 3, a membrane assembly slot 4, a water outlet 5, a water inlet 6, a drain 7, and an air inlet pipe 8; the ceramic membrane assembly 2 is installed inside the ceramic membrane tank 1, an aeration plate 3 is also installed at the bottom of the ceramic membrane tank 1, the ceramic membrane assembly 2 is installed above the aeration plate 3, a membrane assembly slot 4 is provided on the side wall of the ceramic membrane tank 1, the ceramic membrane is installed on the water outlet 5, the water inlet 6 is arranged on the upper side of the ceramic membrane tank 1, the drain 7 is arranged on the bottom side of the ceramic membrane tank 1, and the air inlet pipe 8 is connected to the aeration plate 3.

[0045] The ceramic membrane tank 1 is used to hold the sewage entering the bioreactor, the ceramic membrane assembly 2 is used to filter the sewage, and the aeration plate 3 is used for timed aeration to provide sufficient oxygen for the activated sludge in the reactor. The membrane assembly slot 4 is used to install and fix the ceramic membrane assembly 2. The water outlet 5 is used to discharge the sewage after filtration inside the ceramic membrane tank 1. The sewage to be treated enters the ceramic membrane tank 1 through the water inlet 6. After the reactor stops running, the drain outlet 7 discharges the remaining sewage inside, and the outside air enters the aeration plate 3 through the air inlet pipe 8 to provide sufficient oxygen for the activated sludge inside the ceramic membrane tank 1.

[0046] In this embodiment, it is worth noting that the ceramic membrane assembly 2 is provided with two layers, the first layer is provided with six ceramic membranes 201-206, and the second layer has six ceramic membranes 207-212 installed below the first layer of ceramic membranes. The size of each ceramic membrane is exactly the same, and the water outlet of each ceramic membrane is collected into the central water outlet pipe through the return pipe and the multi-channel and then enters the water outlet 5. The ceramic membrane fins in the ceramic membrane assembly 2 are inserted into the grooves on the outer peripheral wall of the sleeve outside the central water outlet pipe. The 6 ceramic membrane fins are placed symmetrically, and the ceramic membranes are 60° apart. The edge vertices of each layer of ceramic membrane fins are connected to form a regular hexagon.

[0047] Under the action of the water inlet pump, the sewage flows into the ceramic membrane tank 1 from the water inlet 6. The inflowing sewage fully contacts with the activated sludge in the ceramic membrane tank 3, so that the tiny suspended, colloidal and dissolved organic pollutants in the sewage are condensed, adsorbed and metabolized by the activated sludge microorganisms, and are removed in large quantities. At the same time, some phosphorus and nitrogen in the sewage can also be removed. Then the sewage passes through the ceramic membrane 2 to further intercept the substances that are not treated by the activated sludge and is discharged from the outlet under the action of the outlet pump.

[0048] Due to the circular shape of the ceramic membrane tank and the built-in hexagonal lantern-shaped ceramic membrane assembly, the aeration plate 3 can evenly distribute the gas in the ceramic membrane tank cavity during aeration, thereby fully and evenly mixing the activated sludge with oxygen.

[0049] The aeration plate 3 uses a blower to regularly aerate the ceramic membrane tank 1, thereby adding sufficient oxygen to the activated sludge in the reactor.

[0050] The various ceramic membrane fins of the ceramic membrane assembly 2 in the reactor are collected into the central water outlet pipe through the return pipe and the multi-pass pipe. Example 3

[0051] like Figure 1 As shown:

[0052] This embodiment provides a hexagonal lantern ceramic membrane bioreactor system, including a raw water tank 9, a reactor, a water inlet pipe 10, a water inlet pump 11, a blower 12, an air inlet pipe 13, a water outlet pump 14, a water outlet pipe 15, a clean water tank 16, a connecting pipe 17, a water inlet valve 18, a water outlet valve 19, and an air inlet valve 20; the raw water tank 9 is connected to the water inlet pump 11, the water inlet valve 18, and the reactor water inlet in sequence through the water inlet pipe 10, the reactor water outlet is connected to the water outlet pump 14, the water outlet valve 19, and the clean water tank 16 in sequence through the water outlet pipe 15, and the connecting pipe 17 on the aeration plate at the bottom of the reactor is connected to the air inlet valve 20 and the blower 12 in sequence through the air inlet pipe 13.

[0053] In this embodiment, the reactor adopts the hexagonal lantern ceramic membrane bioreactor provided in Example 2, and the blower is used to perform timed aeration on the aeration disk in the reactor to provide a suitable dissolved oxygen concentration for the activated sludge in the ceramic membrane tank, so that it can complete nitrification and denitrification and purify ammonia nitrogen in the water.

[0054] Specific working process:

[0055] The liquid to be treated is collected in the raw water tank 9. Driven by the inlet pump 11, the treated wastewater flows from the raw water tank 9 into the ceramic membrane tank 1. Organic pollutants in the wastewater are absorbed, metabolized, and utilized as nutrients by the activated sludge microorganisms. When the wastewater comes into contact with the activated sludge, the microorganisms aggregate and adsorb the finely suspended, colloidal, and dissolved organic pollutants, resulting in significant removal. This also removes some phosphorus and nitrogen from the wastewater. Organic matter adsorbed on the surface of the activated sludge is metabolized and anabolicized by the microorganisms. The water then passes through the ceramic membranes 201-212, intercepting suspended matter that the activated sludge cannot process, further improving water quality. The water then flows from the outlet 5 through the outlet pipe 15 via the outlet pump 14 into the clean water tank 16. The treated water can be used as household water and delivered to various water appliances for daily use. The function of the aeration plate 3 is to provide a suitable dissolved oxygen concentration for the activated sludge in the ceramic membrane tank 1 by performing aeration at a fixed time through the blower 12, so that the activated sludge can complete nitrification and denitrification and purify ammonia nitrogen in the water.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hexagonal lantern ceramic membrane bioreactor, comprising a ceramic membrane tank (1), a ceramic membrane assembly (2), an aeration plate (3), and a membrane assembly slot (4), wherein the ceramic membrane assembly (2) is installed inside the ceramic membrane tank (1), the aeration plate (3) is arranged at the bottom of the ceramic membrane tank (1), and the inner wall of the ceramic membrane tank (1) is provided with a membrane assembly slot (4), characterized in that: A plurality of groups of ceramic membrane assemblies (2) are provided inside the ceramic membrane tank (1), and the ceramic membrane assemblies (2) divide the water body inside the ceramic membrane tank (1) into a plurality of chambers. The ceramic membrane assemblies (2) are provided with at least one layer, and each layer of the ceramic membrane assemblies (2) includes a central water outlet pipe and a plurality of ceramic membrane fins, and the ceramic membrane fins are evenly arranged along the circumference of the central water outlet pipe.

2. The ceramic membrane bioreactor according to claim 1, characterized in that: Each layer of the ceramic membrane assembly (2) comprises a plurality of ceramic membrane fins, the number of the ceramic membrane fins being 4-8, the angles between the ceramic membrane fins being the same, and the vertices of the outer edges of the ceramic membrane fins forming a regular polygon.

3. The ceramic membrane bioreactor according to claim 2, characterized in that: Each ceramic membrane fin of the ceramic membrane assembly (2) is connected to a central water outlet pipe through a plurality of return water pipes.

4. The ceramic membrane bioreactor according to claim 1, characterized in that: Gaps are provided between the ceramic membrane components (2).

5. The ceramic membrane bioreactor according to claim 1, characterized in that: The aeration plate (3) is installed below the ceramic membrane assembly (2), with a gap between the aeration plate and the ceramic membrane assembly (2).

6. The ceramic membrane bioreactor according to claim 1, characterized in that: The ceramic membrane tank (1) adopts a cylindrical barrel design, the central water outlet pipe is installed at the center of the circle, and the regular polygon formed by the vertices of the outer side lines of the ceramic membrane assembly (2) is at the same position as the center of the circle.

7. The ceramic membrane bioreactor according to claim 1, characterized in that: A sleeve is provided on the outside of the central water outlet pipe, and a plurality of grooves are provided on the outer peripheral wall of the sleeve. The grooves are used for inserting ceramic membrane fins.

8. A membrane bioreactor system using a ceramic membrane bioreactor according to any one of claims 1 to 7, comprising a raw water tank (9), a reactor, a water inlet pipe (10), a water inlet pump (11), a blower (12), an air inlet pipe (13), a water outlet pump (14), a water outlet pipe (15), a clean water tank (16), a connecting pipe (17), a water inlet valve (18), a water outlet valve (19), and an air inlet valve (20); the raw water tank (9) is connected to the water inlet pump (11), the water inlet valve (18), and the reactor water inlet in sequence through the water inlet pipe (10); the reactor water outlet is connected to the water outlet pump (14), the water outlet valve (19), and the clean water tank (16) in sequence through the water outlet pipe (15); the connecting pipe (17) on the aeration plate at the bottom of the reactor is connected to the air inlet valve (20) and the blower (12) in sequence through the air inlet pipe (13), and is characterized in that: The reactor adopts the hexagonal palace lantern ceramic membrane bioreactor according to any one of claims 1 to 5.

9. The ceramic membrane bioreactor system according to claim 8, characterized in that: The blower (12) is used to perform timed aeration on the aeration disk in the reactor.

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