CN112321071A - High-efficiency ceramic membrane bioreactor and water quality purification method thereof - Google Patents
High-efficiency ceramic membrane bioreactor and water quality purification method thereof Download PDFInfo
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- CN112321071A CN112321071A CN202011123596.6A CN202011123596A CN112321071A CN 112321071 A CN112321071 A CN 112321071A CN 202011123596 A CN202011123596 A CN 202011123596A CN 112321071 A CN112321071 A CN 112321071A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention discloses a high-efficiency ceramic membrane bioreactor and a water quality purification method thereof, relates to the relevant field of bioreactors, and aims to solve the problems that in the existing ceramic membrane bioreactor, under the condition of insufficient water flow pressure, a flowing medium cannot permeate a membrane, and even if the water flow pressure is increased subsequently, the original flowing medium can influence the subsequent purification process in a reaction cavity. The reaction tank is characterized in that a partition wall is arranged in the reaction tank, a reaction inner cavity is arranged in the partition wall, an outer cavity is formed between the reaction tank and the partition wall, an overflow pipe is installed on the partition wall, liquid level sensors are installed in the reaction inner cavity and the outer cavity, a water delivery pump is installed on one side of the reaction tank, the output end of the water delivery pump is connected with a second water delivery pipe, the input end of the water delivery pump is connected with a first water delivery pipe, a backflow pipe is connected to the first water delivery pipe through a three-way pipe, and a middle baffle is arranged in the middle of the interior of the reaction inner cavity.
Description
Technical Field
The invention relates to the field related to bioreactors, in particular to a high-efficiency ceramic membrane bioreactor and a water quality purification method thereof.
Background
The ceramic membrane is an asymmetric membrane prepared from inorganic ceramic materials by a special process, and micropores are densely distributed on the tube wall. Under the action of pressure, the raw material liquid flows in the membrane tube or outside the membrane, small molecular substances (or liquid) permeate the membrane, and large molecular substances (or solid) are intercepted by the membrane, so that the purposes of separation, concentration and purification are achieved. The ceramic membrane has the advantages of high separation efficiency, stable effect, good chemical stability, acid and alkali resistance, organic solvent resistance, bacteria resistance, high temperature resistance, pollution resistance, high mechanical strength, good regeneration performance, simple separation process, low energy consumption, simple and convenient operation and maintenance, long service life and the like, is successfully applied to various fields of deep processing of foods, beverages, plants (medicines), biological medicines, fermentation, fine chemical engineering and the like, and can be used for separation, clarification, purification, concentration, sterilization, desalting and the like in the technical process.
The ceramic membrane bioreactor mainly utilizes water flow pressure to press flowing media in or out of a membrane through a membrane component, and macromolecular substances are intercepted by the membrane so as to achieve the purposes of separation, concentration and purification, however, under the condition that the water flow pressure is insufficient, part of the flowing media cannot permeate the membrane, even if the water flow pressure is subsequently increased, the flowing media still exist in or out of the membrane, the part of the flowing media occupies the space of a reaction cavity, the water level line in the reaction cavity is gradually increased, and the water can be purified only by stopping water delivery, discharging the media in the original reaction cavity and increasing the water flow pressure again; therefore, the market urgently needs to develop a high-efficiency ceramic membrane bioreactor and a water quality purification method thereof to help people to solve the existing problems.
Disclosure of Invention
The invention aims to provide a high-efficiency ceramic membrane bioreactor and a water quality purification method thereof, and aims to solve the problems that the prior ceramic membrane bioreactor cannot allow a flowing medium to permeate a membrane under the condition of insufficient water flow pressure, and the prior flowing medium can influence the subsequent purification process in a reaction cavity even if the water flow pressure is increased subsequently.
In order to achieve the purpose, the invention provides the following technical scheme: a high-efficiency ceramic membrane bioreactor comprises a reaction tank, wherein a partition wall is arranged in the reaction tank, a reaction inner cavity is arranged in the partition wall, an outer cavity is formed between the reaction tank and the partition wall, an overflow pipe is arranged on the partition wall and is communicated with the reaction inner cavity and the outer cavity, liquid level sensors are arranged in the reaction inner cavity and the outer cavity, the height of an induction head of each liquid level sensor in the reaction inner cavity is higher than that of the induction head of each liquid level sensor in the outer cavity, a water delivery pump is arranged on one side of the reaction tank, the output end of the water delivery pump is connected with a second water delivery pipe, the second water delivery pipe extends into the outer cavity, the input end of the water delivery pump is connected with a first water delivery pipe, a reflux pipe is connected onto the first water delivery pipe through a three-way pipe, the other end of the reflux pipe extends into the reaction inner, the front end and the rear end of the middle baffle are fixedly connected with the inner wall of the partition wall, the lower ends of the middle baffle and the inner wall of the partition wall are provided with circulation grooves, bioreactor main bodies are arranged in the reaction inner cavity along the two sides of the middle baffle, and the two bioreactor main bodies are centrosymmetric.
Preferably, the bioreactor main part includes ceramic membrane pipe, the lower extreme of ceramic membrane pipe is provided with the bottom plate, the lower extreme of bottom plate is provided with the bottom suspension fagging, bottom suspension fagging and bottom plate sliding connection, and the bottom suspension fagging passes through the fix with screw with the bottom plate, both ends fixedly connected with connecting rod around the bottom plate is followed to the bottom suspension fagging upper end, the both sides welded connection of connecting rod has the installation piece, is provided with the mounting hole on the installation piece.
Preferably, the upper end of ceramic membrane pipe is provided with an upper fixed plate, the purified water outlet pipe is installed in the middle of the upper end of the upper fixed plate, and the purified water outlet pipe, the upper fixed plate and the ceramic membrane pipe are communicated, and the guard bar is arranged between the upper fixed plate and the lower fixed plate along the four corners of the outer side of the ceramic membrane pipe and is set to be L-shaped.
Preferably, an aeration disc is installed at the lower end of the interior of the reaction tank, an air conveying pipe is installed at the lower end of the aeration disc, and the other end of the air conveying pipe extends to the outer side of the reaction tank and is fixedly connected with an air pump.
Preferably, the other end of the purified water outlet pipe extends to the outside of the reaction tank and is fixedly connected with a drainage pump, and the output end of the drainage pump is fixedly connected with a drainage pipe.
Preferably, the purified water outlet pipe is connected with a backwashing water inlet pipe through a four-way pipe, the other end of the backwashing water inlet pipe is fixedly connected with a backwashing pump, the input end of the backwashing pump is fixedly connected with a backwashing water outlet pipe, the lower end of the interior of the reaction tank is provided with a sewage discharge pipe, one end of the sewage discharge pipe extends into the reaction inner cavity, and the other end of the sewage discharge pipe extends out of the reaction tank.
Preferably, the other end of first raceway is connected with leading filter unit casing, the inside of leading filter unit casing is provided with the filter chamber, the upper end of leading filter unit casing is connected with inlet manifold, be connected with into water branch pipe between inlet manifold and the filter chamber, inlet manifold's one end is passed leading filter unit casing and is extended to the inside of filter chamber to inlet branch pipe, and inlet manifold's one end is kept away from to inlet branch pipe is connected with communicating pipe, the lower extreme fixedly connected with water delivery dish of communicating pipe.
Preferably, the inside of filter chamber is provided with first filter steamer tray, second filter steamer tray and third filter steamer tray respectively, and first filter steamer tray, second filter steamer tray and third filter steamer tray set gradually from last to down, and first filter steamer tray, second filter steamer tray and third filter steamer tray respectively are provided with two.
Preferably, drawer and third are filtered to first filter steamer tray, second all include connection frame, handle and filter screen, and the handle is located one side of connection frame, handle and connection frame fixed connection, and the filter screen is located the inside centre of connection frame, filter screen and connection frame fixed connection, and first filter steamer tray, second filter steamer tray and third filter steamer tray go up the filter screen filtration pore and reduce gradually.
A water quality purification method comprises the following steps:
the method comprises the following steps: sewage is input through a water inlet main pipe, different water inlet branch pipes are selected to be input or directly input from the other end of the water inlet main pipe according to the volume of solid media in the sewage, and the sewage is filtered through at least one of a first filter drawer, a second filter drawer and a third filter drawer;
step two: the filtered water conveying pump pumps the sewage into a reaction inner cavity of the reaction tank through a first water conveying pipe and a second water conveying pipe;
step three: under the condition of sufficient water flow pressure, water flow enters the interior of the ceramic membrane pipe through the ceramic membrane pipe of the bioreactor main body and is discharged through the purified water outlet pipe;
step four: under the condition that the water flow pressure is insufficient, part of water flow enters the ceramic membrane tube through the ceramic membrane tube of the bioreactor main body, part of water flow is in the reaction inner cavity, the water level of the reaction inner cavity rises until the water flow reaches the position of the overflow pipe, and the water flow flows into the outer cavity from the reaction inner cavity, is conveyed into the first water conveying pipe through the backflow pipe and is conveyed into the reaction inner cavity through the water conveying pump again;
step five: when the water level of the reaction cavity rises to reach the position of the overflow pipe, the liquid level sensor in the reaction cavity senses a signal, the signal is converted into an electric signal and is transmitted to the console, so that the water pumping power of the water delivery pump is improved, and the pressure of water flow which is pumped into the reaction cavity by the water delivery pump is increased;
step six: the valve on the intermediate pipe connected with the drainage pump and the purified water outlet pipe is opened, the valve on the backwashing water outlet pipe connected with the backwashing pump and the purified water outlet pipe is closed, and the purified water flow is output;
step seven: after the single water treatment is finished, the valve on the intermediate pipe connected with the drainage pump and the purified water outlet pipe is closed, the valve on the backwashing water outlet pipe connected with the backwashing pump and the purified water outlet pipe is opened, the backwashing pump pumps cleaning water into the ceramic membrane pipe of the bioreactor body through the backwashing water inlet pipe to flush out solid impurities covered on the outer surface of the ceramic membrane pipe, and the cleaning water is discharged through the sewage discharge pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, a partition wall is added in a reaction tank to divide the reaction chamber into a reaction inner chamber and an outer chamber, the bioreactor body in the reaction inner chamber normally purifies water, the water flow entering through a water delivery pump has certain water flow pressure and is pressed into a ceramic membrane tube to complete water purification, when the water pressure is insufficient, the water flow is difficult to rapidly pass through the ceramic membrane tube, so that the water level of the reaction inner chamber gradually rises until reaching the height of an overflow pipe, at the moment, a liquid level sensor in the reaction inner chamber senses the rise of the water level, the overflow pipe discharges the water which is too late to be purified in the reaction inner chamber into the outer chamber, the water is pumped into the reaction inner chamber through a second water delivery pump, and the water delivery pump increases the water flow power to increase the water flow pressure, the water flow in the reaction inner chamber penetrates through the ceramic membrane tube after the water flow pressure is increased, and the condition that the water flow, the internal water level gradually rises, even if the water pressure is increased in real time, the internal water level is still kept at a higher position, and the subsequent water quality purification is influenced, so that the problem that the flowing medium cannot permeate the membrane under the condition that the water flow pressure of the existing ceramic membrane bioreactor is insufficient, and the subsequent purification process is influenced by the original flowing medium in the reaction cavity even if the water flow pressure is increased subsequently is solved;
2. in the invention, the bioreactor main body is arranged in a reaction inner cavity of a reaction tank through a connecting rod and an installation sheet, so that the whole bioreactor main body is fixed, and the whole formed by the ceramic membrane tube, the upper fixing plate and the lower fixing plate arranged at the upper end of the ceramic membrane tube and the lower fixing plate is not welded and fixed with the lower support plate, but is fixed through a screw after the lower fixing plate is connected with the lower support plate in a sliding way, so that the whole formed by the ceramic membrane tube, the upper fixing plate and the lower fixing plate arranged at the upper end of the ceramic membrane tube can be independently disassembled, and the whole bioreactor main body is more convenient to install and disassemble and;
3. in the invention, a purified water outlet pipe connected with a bioreactor main body is communicated with a drainage pump and a back flush pump, the drainage pump works to pump out purified water in the process of purifying water, a valve on an intermediate pipe connected with the drainage pump is closed in the process of cleaning equipment, and the valve of the back flush outlet pipe is opened, so that cleaning water is pumped into a ceramic membrane pipe of the bioreactor main body by the back flush pump, solid media on the outer surface of the ceramic membrane pipe are washed off and discharged through a sewage discharge pipe, and the phenomenon that fixed media are adhered to the outer surface of the ceramic membrane pipe to influence the permeation efficiency of flowing media at the next time is avoided;
4. according to the invention, the pre-filtering is carried out through the pre-filtering unit shell before entering the reaction tank, the pre-filtering selects the filtering drawer according to the requirement of the filtering medium, the volume of solid impurities in the original flowing medium is small, then the solid impurities are directly filtered through the third filtering drawer, the first filtering drawer gradually moves to the second filtering drawer and then to the third filtering drawer under the condition of large volume and large quantity of the solid impurities, the filtering efficiency is increased, the filtering effect is not influenced, the first filtering drawer, the second filtering drawer and the third filtering drawer are respectively provided with two drawers, one drawer can be drawn out in the filtering process, but the work of the other drawer is not influenced, so that the impurities filtered in the filtering drawer are treated while the flowing medium is filtered, the shutdown cleaning is not required, and the water treatment efficiency is improved.
Drawings
FIG. 1 is a front view of a high efficiency ceramic membrane bioreactor of the present invention;
FIG. 2 is a schematic view of the pre-filter unit housing of the present invention;
FIG. 3 is a schematic structural view of a first filter drawer, a second filter drawer and a third filter drawer according to the present invention;
FIG. 4 is a schematic structural view of the bioreactor body of the present invention;
FIG. 5 is a schematic structural view of the bioreactor body of the present invention after the ceramic membrane tube is removed.
In the figure: 1. a pre-filter unit housing; 2. a water inlet main pipe; 3. water inlet branch pipes; 4. a communicating pipe; 5. a filter chamber; 6. a first filter drawer; 7. a second filter drawer; 8. a third filter drawer; 9. a water delivery tray; 10. a first water delivery pipe; 11. a water delivery pump; 12. a reflux tube; 13. a second water delivery pipe; 14. an air pump; 15. a gas delivery pipe; 16. an aeration disc; 17. a reaction tank; 18. a partition wall; 19. a reaction inner cavity; 20. an outer cavity; 21. a liquid level sensor; 22. an intermediate baffle; 23. a bioreactor body; 24. a purified water outlet pipe; 25. draining pump; 26. a drain pipe; 27. backwashing the water inlet pipe; 28. a backwash pump; 29. backwashing the water outlet pipe; 30. a sewage discharge pipe; 31. an overflow pipe; 32. a connecting frame; 33. a handle; 34. a filter screen; 35. a guard bar; 36. a ceramic membrane tube; 37. a lower fixing plate; 38. a lower support plate; 39. a connecting rod; 40. mounting a sheet; 41. and an upper fixing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an embodiment of the present invention is shown: a high-efficiency ceramic membrane bioreactor comprises a reaction tank 17, a partition wall 18 is arranged in the reaction tank 17, a reaction inner cavity 19 is arranged in the partition wall 18, an outer cavity 20 is formed between the reaction tank 17 and the partition wall 18, an overflow pipe 31 is arranged on the partition wall 18, the overflow pipe 31 is communicated with the reaction inner cavity 19 and the outer cavity 20, liquid level sensors 21 are arranged in the reaction inner cavity 19 and the outer cavity 20 respectively, the height of a sensing head of the liquid level sensor 21 in the reaction inner cavity 19 is higher than that of the liquid level sensor 21 in the outer cavity 20, when the water level of the reaction inner cavity 19 rises to reach the position of the overflow pipe 31, the liquid level sensor 21 in the reaction inner cavity 19 senses a signal and converts the signal into an electric signal to be transmitted to a control console, so that the pumping power of a water transmission pump 11 is improved, the pressure of water flow re-pumped into the, the output of water delivery pump 11 is connected with second raceway 13, second raceway 13 extends to the inside of exocoel 20, the input of water delivery pump 11 is connected with first raceway 10, be connected with backflow pipe 12 through the three-way pipe on the first raceway 10, the rivers that reduce partial pressure pump again, backflow pipe 12's the other end extends to the inside of reaction inner chamber 19, the inside centre of reaction inner chamber 19 is provided with middle baffle 22, the front and back both ends of middle baffle 22 and the inner wall fixed connection of partition wall 18, middle baffle 22 is provided with the runner duct with the lower extreme of partition wall 18 inner wall, bioreactor main part 23 is installed along the inside both sides of middle baffle 22 of reaction inner chamber 19, two bioreactor main part 23 centrosymmetries.
Further, bioreactor main part 23 includes ceramic membrane tube 36, and the lower extreme of ceramic membrane tube 36 is provided with bottom plate 37, and the lower extreme of bottom plate 37 is provided with bottom suspension fagging 38, bottom suspension fagging 38 and bottom plate 37 sliding connection, and bottom suspension fagging 38 passes through the fix with screw with bottom plate 37, and both ends fixedly connected with connecting rod 39 around bottom plate 37 is followed to bottom suspension fagging 38 upper end, and the both sides welded connection of connecting rod 39 has installation piece 40, is provided with the mounting hole on the installation piece 40.
Further, an upper fixing plate 41 is arranged at the upper end of the ceramic membrane tube 36, a purified water outlet pipe 24 is installed in the middle of the upper end of the upper fixing plate 41, the purified water outlet pipe 24, the upper fixing plate 41 and the ceramic membrane tube 36 are communicated, a protection rod 35 is arranged between the upper fixing plate 41 and the lower fixing plate 37 along four corners of the outer side of the ceramic membrane tube 36, and the protection rod 35 is L-shaped and plays a role in corner protection.
Further, aeration dish 16 is installed to the inside lower extreme of reaction tank 17, gas-supply pipe 15 is installed to the lower extreme of aeration dish 16, the other end of gas-supply pipe 15 extends to the reaction tank 17 outside and air pump 14 fixed connection, because the lower extreme of intermediate baffle 22 and partition 18 inner wall is provided with the circulation groove, aeration dish 16 drives rivers upwards to flow when upwards carrying air, the right side flow direction in the reaction inner chamber 19 is downward in the reaction tank 17, thereby form a circulation, be favorable to rivers to see through ceramic membrane pipe 36, accomplish sewage purification, increase sewage treatment efficiency.
Further, the other end of the purified water outlet pipe 24 extends to the outside of the reaction tank 17 and is fixedly connected with a drain pump 25, and the output end of the drain pump 25 is fixedly connected with a drain pipe 26.
Further, the purified water outlet pipe 24 is connected with a backwash water inlet pipe 27 through a four-way pipe, the other end of the backwash water inlet pipe 27 is fixedly connected with a backwash pump 28, the input end of the backwash pump 28 is fixedly connected with a backwash water outlet pipe 29, the lower end of the interior of the reaction tank 17 is provided with a sewage discharge pipe 30, one end of the sewage discharge pipe 30 extends into the reaction inner cavity 19, the other end of the sewage discharge pipe 30 extends out of the reaction tank 17, the backwash pump 28 pumps cleaning water into the ceramic membrane pipe 36 of the bioreactor main body 23 through the backwash water inlet pipe 27, solid impurities covered on the outer surface of the ceramic membrane pipe 36 are flushed out, and the cleaning water is discharged through.
Further, the other end of first raceway 10 is connected with leading filter unit casing 1, the inside of leading filter unit casing 1 is provided with filter chamber 5, the upper end of leading filter unit casing 1 is connected with inlet manifold 2, be connected with into water between inlet manifold 2 and the filter chamber 5 and divide pipe 3, inlet manifold 3 keeps away from inlet manifold 2's one end and passes leading filter unit casing 1 and extend to filter chamber 5's inside, inlet manifold 3 keeps away from inlet manifold 2's one end and is connected with communicating pipe 4, the lower extreme fixedly connected with water conveying dish 9 of communicating pipe 4.
Further, a first filter drawer 6, a second filter drawer 7 and a third filter drawer 8 are respectively arranged in the filter cavity 5, the front filter is performed through the front filter unit casing 1 before entering the reaction tank 17, the front filter selects the filter drawers according to the requirements of the filter media, the volume of solid impurities in the original flowing media is small, then the solid impurities are directly connected with the third filter drawer 8, the solid impurities are gradually filtered from the first filter drawer 6 to the second filter drawer 7 under the condition of large volume and large quantity, and then the solid impurities are filtered to the third filter drawer 8, the filter efficiency is increased, and the filter effect is not influenced, the first filter drawer 6, the second filter drawer 7 and the third filter drawer 8 are sequentially arranged from top to bottom, two first filter drawer 6, two second filter drawer 7 and two third filter drawers 8 are respectively arranged, one of the two drawers can be drawn out in the filter process, but the work of the other filter drawer is not influenced, therefore, the impurities filtered out from the filter drawer are treated while the flowing medium is filtered, the machine does not need to be stopped for cleaning, and the water treatment efficiency is improved.
Further, first filter steamer tray 6, second filter steamer tray 7 and third filter steamer tray 8 all include connection frame 32, handle 33 and filter screen 34, and handle 33 is located one side of connection frame 32, and handle 33 and connection frame 32 fixed connection, filter screen 34 are located the inside centre of connection frame 32, filter screen 34 and connection frame 32 fixed connection, and first filter steamer tray 6, second filter steamer tray 7 and third filter steamer tray 8 go up filter screen 34 filtration pore and reduce gradually.
A water quality purification method comprises the following steps:
the method comprises the following steps: sewage is input through the water inlet main pipe 2, different water inlet branch pipes 3 are selected to be input according to the volume of solid media in the sewage or are directly input from the other end of the water inlet main pipe 2, and the sewage is filtered through at least one of the first filtering drawer 6, the second filtering drawer 7 and the third filtering drawer 8;
step two: the filtered water conveying pump 11 pumps the sewage into a reaction inner cavity 19 of the reaction tank 17 through a first water conveying pipe 10 and a second water conveying pipe 13;
step three: under the condition that the water flow pressure is enough, the water flow penetrates through the ceramic membrane tube 36 of the bioreactor main body 23 to enter the interior of the ceramic membrane tube 36 and is discharged through the purified water outlet pipe 24;
step four: under the condition that the water flow pressure is insufficient, part of the water flow enters the ceramic membrane tube 36 of the bioreactor main body 23 through the ceramic membrane tube 36, part of the water flow is in the reaction inner cavity 19, the water level of the reaction inner cavity 19 rises until the water flow reaches the position of the overflow pipe 31, the water flow flows into the outer cavity 20 from the reaction inner cavity 19, is conveyed into the first water conveying pipe 10 through the backflow pipe 12, and is pumped into the reaction inner cavity 19 again through the water conveying pump 11;
step five: when the water level of the reaction cavity 19 rises to reach the position of the overflow pipe 31, the liquid level sensor 21 in the reaction cavity 19 senses a signal, the signal is converted into an electric signal and is transmitted to the console, so that the water pumping power of the water delivery pump 11 is improved, and the pressure of water flow pumped into the reaction cavity 19 again through the water delivery pump 11 is increased;
step six: the valve on the middle pipe connecting the water discharge pump 25 and the purified water outlet pipe 24 is opened, the valve on the back washing outlet pipe 29 connecting the back washing pump 28 and the purified water outlet pipe 24 is closed, and the purified water flow is output;
step seven: after the single water treatment is finished, the upper valve of the middle pipe connected with the water discharge pump 25 and the purified water outlet pipe 24 is closed, the upper valve of the back flush outlet pipe 29 connected with the back flush pump 28 and the purified water outlet pipe 24 is opened, the back flush pump 28 pumps cleaning water into the ceramic membrane pipe 36 of the bioreactor main body 23 through the back flush inlet pipe 27, solid impurities covered on the outer surface of the ceramic membrane pipe 36 are flushed out, and the cleaning water is discharged through the sewage discharge pipe 30.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A high-efficiency ceramic membrane bioreactor comprises a reaction tank (17), and is characterized in that: the reaction tank is characterized in that a partition wall (18) is arranged inside the reaction tank (17), a reaction inner cavity (19) is arranged inside the partition wall (18), an outer cavity (20) is formed between the reaction tank (17) and the partition wall (18), an overflow pipe (31) is installed on the partition wall (18), the overflow pipe (31) is communicated with the reaction inner cavity (19) and the outer cavity (20), liquid level sensors (21) are installed inside the reaction inner cavity (19) and the outer cavity (20), the height of an induction head of the liquid level sensor (21) of the reaction inner cavity (19) is higher than that of the liquid level sensor (21) of the outer cavity (20), a water delivery pump (11) is installed on one side of the reaction tank (17), the output end of the water delivery pump (11) is connected with a second water delivery pipe (13), the second water delivery pipe (13) extends into the outer cavity (20), the input end of the water delivery pump (11) is connected with a first, the bioreactor is characterized in that a backflow pipe (12) is connected to the first water pipe (10) through a three-way pipe, the other end of the backflow pipe (12) extends to the inside of the reaction inner cavity (19), an intermediate baffle (22) is arranged in the middle of the inside of the reaction inner cavity (19), the front end and the rear end of the intermediate baffle (22) are fixedly connected with the inner wall of the partition wall (18), circulation grooves are formed in the lower ends of the intermediate baffle (22) and the inner wall of the partition wall (18), bioreactor main bodies (23) are installed in the reaction inner cavity (19) along the two sides of the intermediate baffle (22), and the two bioreactor main bodies (23) are centrosymmetric.
2. A high efficiency ceramic membrane bioreactor as claimed in claim 1, wherein: bioreactor main part (23) is including ceramic membrane pipe (36), the lower extreme of ceramic membrane pipe (36) is provided with bottom plate (37), the lower extreme of bottom plate (37) is provided with bottom suspension fagging (38), bottom suspension fagging (38) and bottom suspension fagging (37) sliding connection, and bottom suspension fagging (38) pass through the fix with screw with bottom suspension fagging (37), both ends fixedly connected with connecting rod (39) around bottom suspension fagging (37) are followed to bottom suspension fagging (38) upper end, the both sides welded connection of connecting rod (39) has mounting plate (40), is provided with the mounting hole on mounting plate (40).
3. A high efficiency ceramic membrane bioreactor as claimed in claim 2, wherein: the ceramic membrane tube is characterized in that an upper fixing plate (41) is arranged at the upper end of the ceramic membrane tube (36), a purified water outlet pipe (24) is installed in the middle of the upper end of the upper fixing plate (41), the purified water outlet pipe (24), the upper fixing plate (41) and the ceramic membrane tube (36) are communicated, a protection rod (35) is arranged between the upper fixing plate (41) and the lower fixing plate (37) along the four corners of the outer side of the ceramic membrane tube (36), and the protection rod (35) is arranged to be L-shaped.
4. A high efficiency ceramic membrane bioreactor as claimed in claim 1, wherein: an aeration disc (16) is installed at the lower end of the interior of the reaction tank (17), an air conveying pipe (15) is installed at the lower end of the aeration disc (16), and the other end of the air conveying pipe (15) extends to the outer side of the reaction tank (17) and is fixedly connected with an air pump (14).
5. A high efficiency ceramic membrane bioreactor as claimed in claim 3, wherein: the other end of the purified water outlet pipe (24) extends to the outer side of the reaction tank (17) and is fixedly connected with a drainage pump (25), and the output end of the drainage pump (25) is fixedly connected with a drainage pipe (26).
6. A high efficiency ceramic membrane bioreactor as claimed in claim 3, wherein: the device is characterized in that the purified water outlet pipe (24) is connected with a backwashing water inlet pipe (27) through a four-way pipe, the other end of the backwashing water inlet pipe (27) is fixedly connected with a backwashing pump (28), the input end of the backwashing pump (28) is fixedly connected with a backwashing water outlet pipe (29), a sewage discharge pipe (30) is installed at the lower end inside the reaction tank (17), one end of the sewage discharge pipe (30) extends into the reaction inner cavity (19), and the other end of the sewage discharge pipe (30) extends out of the reaction tank (17).
7. A high efficiency ceramic membrane bioreactor as claimed in claim 1, wherein: the other end of first raceway (10) is connected with leading filter unit casing (1), the inside of leading filter unit casing (1) is provided with filter chamber (5), the upper end of leading filter unit casing (1) is connected with inlet manifold (2), be connected with into water between inlet manifold (2) and filter chamber (5) and manage (3), the one end of keeping away from inlet manifold (2) in inlet manifold (3) passes the inside that leading filter unit casing (1) extended to filter chamber (5), and the one end of keeping away from inlet manifold (2) in inlet manifold (3) is connected with communicating pipe (4), the lower extreme fixedly connected with water delivery dish (9) of communicating pipe (4).
8. The high efficiency ceramic membrane bioreactor as claimed in claim 7, wherein: the inside of filter chamber (5) is provided with first filter steamer tray (6), second filter steamer tray (7) and third filter steamer tray (8) respectively, and first filter steamer tray (6), second filter steamer tray (7) and third filter steamer tray (8) set gradually from last to down, and first filter steamer tray (6), second filter steamer tray (7) and third filter steamer tray (8) respectively are provided with two.
9. A high efficiency ceramic membrane bioreactor as claimed in claim 8, wherein: first filter steamer tray (6), second filter steamer tray (7) and third filter steamer tray (8) all include connection frame (32), handle (33) and filter screen (34), handle (33) are located one side of connection frame (32), handle (33) and connection frame (32) fixed connection, filter screen (34) are located the inside centre of connection frame (32), filter screen (34) and connection frame (32) fixed connection, filter screen (34) reduce gradually on first filter steamer tray (6), second filter steamer tray (7) and third filter steamer tray (8) filter hole.
10. A water purification method, which is realized based on the high-efficiency ceramic membrane bioreactor of any one of claims 1 to 9, and is characterized by comprising the following steps:
the method comprises the following steps: sewage is input through a water inlet main pipe (2), different water inlet branch pipes (3) are selected to be input according to the volume of solid media in the sewage or are directly input from the other end of the water inlet main pipe (2), and the sewage is filtered through at least one of a first filtering drawer (6), a second filtering drawer (7) and a third filtering drawer (8);
step two: the filtered water delivery pump (11) pumps the sewage into a reaction inner cavity (19) of the reaction tank (17) through a first water delivery pipe (10) and a second water delivery pipe (13);
step three: under the condition of sufficient water flow pressure, water flow penetrates through the ceramic membrane tube (36) of the bioreactor main body (23) to enter the interior of the ceramic membrane tube (36) and is discharged through the purified water outlet pipe (24);
step four: under the condition of insufficient water flow pressure, part of water flow penetrates through the ceramic membrane tube (36) of the bioreactor main body (23) and enters the interior of the ceramic membrane tube (36), part of water flow is in the reaction inner cavity (19), the water level of the reaction inner cavity (19) rises until reaching the position of the overflow pipe (31), and the water flow flows into the outer cavity (20) from the reaction inner cavity (19), is conveyed into the first water conveying pipe (10) through the backflow pipe (12), and is pumped into the reaction inner cavity (19) through the water conveying pump (11);
step five: when the water level of the reaction inner cavity (19) rises to reach the position of the overflow pipe (31), a liquid level sensor (21) in the reaction inner cavity (19) senses a signal, converts the signal into an electric signal and transmits the electric signal to a control console, so that the water pumping power of the water delivery pump (11) is improved, and the pressure of water flow pumped into the reaction inner cavity (19) again through the water delivery pump (11) is increased;
step six: a valve on a middle pipe connected with the drainage pump (25) and the purified water outlet pipe (24) is opened, a valve on a back washing outlet pipe (29) connected with the back washing pump (28) and the purified water outlet pipe (24) is closed, and purified water flow is output;
step seven: after the single water treatment is finished, the valve on the middle pipe connecting the water discharge pump (25) and the purified water outlet pipe (24) is closed, the valve on the back flush water outlet pipe (29) connecting the back flush pump (28) and the purified water outlet pipe (24) is opened, the back flush pump (28) pumps the cleaning water into the ceramic membrane pipe (36) of the bioreactor main body (23) through the back flush water inlet pipe (27), solid impurities covered on the outer surface of the ceramic membrane pipe (36) are flushed out, and the cleaning water is discharged through the sewage discharge pipe (30).
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| CN103331101A (en) * | 2013-06-14 | 2013-10-02 | 浙江玉泉环境工程有限公司 | Ultrafiltration membrane component |
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