CN111170447B - Fluidized bed biofilm reactor based on composite desulfurization bacteria - Google Patents
Fluidized bed biofilm reactor based on composite desulfurization bacteria Download PDFInfo
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- CN111170447B CN111170447B CN202010042740.7A CN202010042740A CN111170447B CN 111170447 B CN111170447 B CN 111170447B CN 202010042740 A CN202010042740 A CN 202010042740A CN 111170447 B CN111170447 B CN 111170447B
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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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/085—Fluidized beds
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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
- C02F3/10—Packings; Fillings; Grids
- C02F3/104—Granular carriers
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/345—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for biological oxidation or reduction of sulfur compounds
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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
- C02F7/00—Aeration of stretches of water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention provides a fluidized bed biofilm reactor based on composite desulfurization bacteria, which comprises a reaction tank, a biofilm carrier and an aeration mechanism, wherein the biofilm carrier is provided with the composite desulfurization bacteria, and the composite desulfurization bacteria comprise thiobacillus, pseudomonas and acinetobacter. By adopting the scheme, the method has good effect of removing sulfides in water, promotes the rapid establishment of desulfurization flora in a sewage system, and improves the quality of effluent. The aeration mechanism includes mobile device and aeration fishing device, aeration fishing device is connected with mobile device, aeration fishing device includes first motor, hollow pivot and aeration impeller, first motor is just reversing motor, first motor is connected with the transmission of hollow pivot, there is the cavity in the aeration impeller, the cavity communicates with the hollow of hollow pivot, the aeration impeller includes the side body and the pocket body, the side of the side body is connected with hollow pivot, the bottom and the pocket body coupling of the side body, be provided with the aeration hole on the pocket body.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a fluidized bed biofilm reactor based on composite desulfurization bacteria.
Background
The active sludge method has a plurality of operation modes after decades of development and innovation since the beginning of the 20 th century in the United kingdom, and simultaneously becomes a relatively mature process which is accepted by people gradually due to the excellent sewage treatment effect; the biofilm method is a process for purifying a water body by using organisms attached to a filler, and is rapidly developed and improved in recent years. The biomembrane method makes up for many defects of the activated sludge method, such as good stability, strong capability of bearing organic load and hydraulic load impact, no sludge expansion, no backflow, high removal rate of organic matters, small volume of a reactor, small occupied area of a sewage treatment plant and the like. However, the biofilm method has its own defects, such as easy blockage of the filter material in the biofilter, periodic back flushing, difficulty in simultaneously fixing the filler and replacing aeration equipment under the filler, capability of the carrier particles in the biological fluidized bed reactor to function only in a fluidized state, poor process stability …, and the like. Between the defects of the two technologies, a moving-bed-biofilm reactor (MBBR) is produced. The MBBR method is introduced at the end of the 80 s and is quickly applied in Europe, and the MBBR method absorbs the advantages of the traditional activated sludge method and the biological contact oxidation method and becomes a novel and efficient composite process treatment method. The core part is that suspended filler with specific gravity close to water is directly added into an aeration tank to be used as an active carrier of microorganisms, the microorganism is in a fluidized state under the action of aeration in the aeration tank and the lifting of water flow, and when the microorganisms are attached to the carrier, the floating carrier freely moves in a reactor along with the convolution and turning action of mixed liquid, thereby achieving the purpose of sewage treatment.
In the research of the last decade, the MBBR method has been widely used as a mature process in industrial wastewater such as paper-making wastewater, food industry wastewater, slaughter wastewater, oil refining wastewater and the like, and can also treat municipal domestic sewage and mixed sewage of municipal wastewater and industrial wastewater. For example, the sewage generated by the desulfurizing tower contains a large amount of sulfur, the sulfuration is mostly carried out by adopting composite desulfurizing bacteria, an aerobic environment is needed, and the counter-sulfuration is easy to occur in an anaerobic environment, so that the requirement on the oxygen content of the fluidized bed biofilm reactor is high. Aeration equipment commonly used at present is mostly the many intake pipes that set up in the bottom, lets in oxygen through the hole in the intake pipe, makes bottom oxygen content higher, and upper portion oxygen content is low, causes the oxygen concentration difference. In addition, the biomembrane carrier is isolated at the bottom of the reaction tank by using a fence, so that the biomembrane carrier is not convenient to salvage for inspection, maintenance and replacement.
Therefore, there is a need in the art for a composite desulfurization bacteria-based fluidized bed biofilm reactor.
The invention is provided in view of the above.
Disclosure of Invention
The invention aims to provide a fluidized bed biofilm reactor based on composite desulfurization bacteria, which aims to solve at least one technical problem.
The invention particularly provides a fluidized bed biofilm reactor based on composite desulfurization bacteria, which comprises a reaction tank, a biofilm carrier and an aeration mechanism, wherein the biofilm carrier is provided with the composite desulfurization bacteria. The complex desulfurization bacteria comprise Thiobacillus, Pseudomonas and Acinetobacter.
By adopting the scheme, the method has good effect of removing sulfides in water, promotes the rapid establishment of desulfurization flora in a sewage system, and improves the quality of effluent.
Further, aeration mechanism includes mobile device and aeration fishing device, the mobile device is connected with the reaction tank or is located the reaction tank outside, aeration fishing device is connected with the mobile device, aeration fishing device includes first motor, hollow rotating shaft and aeration impeller, first motor is positive reverse rotation motor, first motor is connected with the transmission of hollow rotating shaft, hollow rotating shaft upper end is connected with air or oxygen source, there is the cavity in the aeration impeller, the cavity communicates with the hollow of hollow rotating shaft, aeration impeller includes the side body and the pocket body, the side of the side body is connected with hollow rotating shaft, the bottom and the pocket body coupling of the side body, be provided with the aeration hole on the pocket body. The first motor may be in transmission connection with the hollow rotating shaft through a gear, which can be easily identified by those skilled in the art.
Adopt above-mentioned scheme, mobile device can drive the relative reaction tank of aeration fishing device and remove, and the degree of depth of control aeration fishing device in the reaction tank, control aeration position can also take the internal biomembrane carrier of pocket out of the reaction tank, and the biomembrane carrier of being convenient for separates with the reaction tank, first motor drives hollow rotating shaft rotatory, drives the aeration impeller and rotates, the air or the oxygen that the aeration hole flows improve the oxygen content with higher speed under the rotation status, provide better good oxygen environment, the pocket body is used for distributing the aeration hole, increases the aeration area, still is used for loading the biomembrane carrier, the side body mainly plays the stirring effect, still plays the interception effect, the side body is connected with the pocket body, and it is internal to store the pocket with the carrier of interception. When first motor is rotatory to a direction, aeration fishing device mainly plays stirring and aeration effect, when first motor is rotatory to another direction, aeration fishing device mainly plays interception salvage effect, fluidized bed biofilm reactor based on compound doctor provides an aeration equipment position and can adjust for the degree of oxygen in the regulation reaction tank, and the easy access is salvaged the biofilm carrier and is convenient for to the measuring of biofilm growth degree, be convenient for and reaction tank separation, provides better maintenance environment, still is convenient for change the biofilm carrier, saves artifical salvage cost, fishing device collects the aeration and salvages in an organic whole, improves the compactedness, saves space.
Further, the moving device comprises a vertical telescopic component and a horizontal telescopic component, the top end of the vertical telescopic component is connected with the horizontal telescopic component, and the horizontal telescopic component is connected with the aeration fishing device. The vertical telescopic component and the horizontal telescopic component can be driven by a motor and can also hydraulically drive a multi-stage hydraulic cylinder to form a telescopic mechanism.
By adopting the scheme, the moving device can not only drive the aeration fishing device to move up and down so as to fish the biofilm carrier, but also control the biofilm carrier, so that the moving range is enlarged, the reaction tanks with different specifications are adapted, and the aeration device is more conveniently controlled.
Furthermore, the mobile device also comprises a rotating assembly, and the vertical telescopic device is connected with the horizontal telescopic assembly through the rotating assembly. The rotating assembly can be one or more of a motor and gear system, a hydraulic steering system and a manual operating rod system.
By adopting the scheme, the rotating assembly can drive the aeration fishing device to rotate by taking the vertical telescopic assembly as an axis, so that the moving range is increased, and the aeration fishing device is transferred to another reaction tank, thereby realizing the use of a plurality of reaction tanks of the aeration fishing device, greatly improving the utilization rate of instruments and saving the cost.
Further, aeration holes are formed in the upper side and the lower side of the pocket body. More preferably, the aeration holes on both sides of the pocket are symmetrically arranged.
By adopting the scheme, when the aeration function is achieved, the distribution of the aeration holes is increased, and when the fishing function is used, the water flow convenient to pass through can intercept the biomembrane carrier, so that the biomembrane carrier in the pocket body can be prevented from being washed away.
Further, the side body is divided into a first base body and a second base body, the side face of the first base body is respectively connected with the hollow rotating shaft and the second base body, and the bottom of the second base body is connected with the pocket body.
By adopting the scheme, the first base body and the second base body enclose at least one half of the side surface of the bag body so as to intercept the biomembrane carrier.
Further, the second substrate is arc-shaped.
By adopting the scheme, the rotary resistance is reduced during aeration, and the interception area is increased during fishing.
Further, aeration holes are formed in the two sides of the second base body. More preferably, the aeration holes on both sides of the second substrate are symmetrically arranged. And two sides of the second base body are two side shells of the cavity.
By adopting the scheme, the resistance of the second substrate is reduced during aeration, sewage is filtered during interception, and a biological membrane carrier is intercepted.
Furthermore, one side of the first base body, which is close to the bag body, is provided with aeration holes, and the other side of the first base body is not provided with aeration holes. And two sides of the first base body are two side shells of the cavity.
By adopting the scheme, when the aeration hole on one side of the pocket body, close to the first base body, is convenient for fishing, water flow enters the cavity and flows out from the aeration hole of the second base body, so that resistance is reduced, the aeration hole is not arranged on the other side, so that the stirring effect can be improved, the flow speed of the water flow is increased, and the oxygen content is improved.
Further, the first base body is provided with an extension section at the joint with the second base body.
By adopting the scheme, the extension section increases the stirring effect and reduces the resistance caused by the second substrate.
Furthermore, one side of the first base body, which is far away from the pocket body, is concave.
By adopting the scheme, the stirring effect is increased, the flow speed of water flow is increased, and the oxygen content is improved.
Furthermore, the side body is obliquely arranged, and the lower side of the side body is in streamline connection with the upper side of the pocket body.
By adopting the scheme, the hollow rotating shaft is along when the pocket body direction is rotated, the biomembrane carrier is salvaged, the side body is inclined towards the pocket body direction, the biomembrane carrier conveniently intercepted by the side body flows towards the pocket body, the interception is in the pocket body, when the hollow rotating shaft rotates towards the other direction, the side body pushes water flow to flow upwards in an inclined manner, the water flow circulation flow is accelerated, and the oxygen content of the upper part of the reaction tank is improved.
Furthermore, the number of the aeration impellers is at least two, and the aeration impellers are uniformly arranged on the circumference.
Preferably, the number of the aeration impellers is three.
By adopting the scheme, the biomembrane carrier is convenient to intercept, and the stirring resistance is reduced.
Further, the fluidized bed biofilm reactor based on the composite desulfurization bacteria further comprises a control system, the control system comprises a controller and a control panel, the control system is electrically connected with the aeration mechanism and controls the electric equipment, and the control panel is used for man-machine interaction.
By adopting the scheme, the fluidized bed biofilm reactor based on the composite desulfurization bacteria can be automatically controlled, and the efficiency is improved.
Further, the aeration impeller is provided with a plurality of layers.
By adopting the scheme, the working area and the range of the aeration fishing device are increased, and the efficiency is improved.
Preferably, the multi-layer aeration impellers are distributed spirally or in a staggered way. The aeration impellers in the upper layer and the lower layer are spirally distributed at the same angle in the horizontal direction, and the aeration impellers in the upper layer are distributed in a staggered manner and are positioned between the two aeration impellers in the lower layer.
By adopting the scheme, the effective working area of the aeration impeller is increased, the aeration impellers play a synergistic effect, the space is fully utilized, and the oxygen content and the interception effect are effectively improved.
In conclusion, the invention has the following beneficial effects:
1. the moving device can drive the aeration fishing device to move relative to the reaction tank, control the depth of the aeration fishing device in the reaction tank and the aeration position, and can also bring the biofilm carriers in the bag body out of the reaction tank, so that the biofilm carriers can be conveniently separated from the reaction tank;
2. the first motor drives the hollow rotating shaft to rotate to drive the aeration impeller to rotate, air or oxygen flowing out of the aeration holes is accelerated to improve oxygen content in a rotating state, a better aerobic environment is provided, the bag body is used for distributing the aeration holes, increasing aeration area and loading a biological membrane carrier, the side body mainly plays a role in stirring and also plays a role in interception, and the side body is connected with the bag body and stores the intercepted carrier into the bag body;
3. when the first motor rotates in one direction, the aeration fishing device mainly plays roles in stirring and aeration, when the first motor rotates in the other direction, the aeration fishing device mainly plays a role in intercepting and fishing, the fluidized bed biofilm reactor based on the composite desulfurization bacteria provides an aeration device, the position of the aeration device can be adjusted, the oxygen content in the reaction tank is adjusted, the maintenance is convenient, the biofilm carrier is fished, the detection on the growth degree of the biofilm is convenient, the separation from the reaction tank is convenient, a better maintenance environment is provided, the biofilm carrier is convenient to replace, and the manual fishing cost is saved;
4. the aeration fishing device integrates aeration fishing, improves compactness and saves space;
5. the setting of aeration impeller can reduce the resistance in aeration state and salvage state homoenergetic, raises the efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of one embodiment of a composite desulfurizing bacteria-based fluidized bed biofilm reactor of the present invention;
FIG. 2 is a perspective view of one embodiment of a fluidized bed biofilm reactor based on composite desulfurization bacteria of the present invention;
FIG. 3 is a perspective view of another embodiment of the composite desulfurizing bacteria-based fluidized bed biofilm reactor of the present invention;
description of the reference numerals
The technical scheme of the invention can be more clearly understood and explained by combining the embodiment of the invention through the reference sign description.
1. A mobile device; 11. a vertical telescopic assembly; 12. a horizontal telescoping assembly; 13. a rotating assembly; 2. an aeration fishing device; 21. a first motor; 22. a hollow rotating shaft; 23. an aeration impeller; 231. a side body; 2311. a first substrate; 2312. a second substrate; 2313. an extension section; 232. a pocket body; 2321. an aeration hole; 3. and (4) a reaction tank.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
The present invention will be described in detail below by way of examples.
Referring to fig. 1 and 2, the invention provides a fluidized bed biofilm reactor based on composite desulfurization bacteria, which comprises a reaction tank 3, a biofilm carrier and an aeration mechanism, wherein the biofilm carrier is provided with the composite desulfurization bacteria. The complex desulfurization bacteria comprise Thiobacillus, Pseudomonas and Acinetobacter; wherein, the thiobacillus species can be one or more selected from thiobacillus denitrificans, thiobacillus thiooxidans and thiobacillus ferrooxidans; the pseudomonas strain can be selected from one or more of pseudomonas fluorescens, pseudomonas aeruginosa and pseudomonas meliloti; the acinetobacter species may be selected from one or more of acinetobacter calcoaceticus, acinetobacter rufii, acinetobacter baumannii and acinetobacter haemolyticus.
By adopting the scheme, the method has good effect of removing sulfides in water, promotes the rapid establishment of desulfurization flora in a sewage system, and improves the quality of effluent.
In a preferred embodiment of the present invention, the aeration mechanism includes a moving device 1 and an aeration fishing device 2, the moving device 1 is connected to the reaction tank 3 or located outside the reaction tank 3, the aeration fishing device 2 is connected to the moving device 1, the aeration fishing device 2 includes a first motor 21, a hollow rotating shaft 22 and an aeration impeller 23, the first motor 21 is a forward and reverse rotation motor, the first motor 21 is in transmission connection with the hollow rotating shaft 22, the upper end of the hollow rotating shaft 22 is connected to an air or oxygen source, a cavity is formed in the aeration impeller 23, the cavity is in hollow communication with the hollow rotating shaft 22, the aeration impeller 23 includes a side body 231 and a pocket 232, the side end of the side body 231 is connected to the hollow rotating shaft 22, the bottom end of the side body 231 is connected to the pocket 232, and the pocket 232 is provided with an aeration hole 2321. The transmission connection between the first motor 21 and the hollow rotating shaft 22 can be through a gear connection, which can be easily identified by those skilled in the art.
Adopt above-mentioned scheme, mobile device 1 can drive the relative reaction tank 3 removal of aeration fishing device 2, and the degree of depth of control aeration fishing device 2 in reaction tank 3 controls the aeration position, can also take the biomembrane carrier in the pocket body 232 out of reaction tank 3, and the biomembrane carrier of being convenient for separates with reaction tank 3, first motor 21 drives hollow rotating shaft 22 rotatory, drives aeration impeller 23 and rotates, aeration hole 2321 outflow air or oxygen improve the oxygen content with higher speed under the rotation state, provide better aerobic environment, pocket body 232 is used for distributing aeration hole 2321, increases the aeration area, still is used for loading the biomembrane carrier, side 231 mainly plays the stirring effect, still plays the interception effect, side 231 is connected with pocket body 232, stores the carrier of interception in pocket body 232. First motor 21 is when rotatory to the direction, aeration fishing device 2 mainly plays stirring and aeration effect, when first motor 21 is rotatory to another direction, aeration fishing device 2 mainly plays interception salvage effect, fluidized bed biofilm reactor based on compound doctor provides an aeration device position and can adjust for degree of oxygen in the regulation reaction tank 3, and easy access salvages the biofilm carrier and is convenient for to the detection of biofilm growth degree, be convenient for separate with reaction tank 3, provides better maintenance environment, still is convenient for change the biofilm carrier, saves artifical salvage cost, fishing device 2 collects the aeration and salvages in an organic whole, improves the compactness, saves space.
In a preferred embodiment of the invention, the moving device 1 comprises a vertical telescopic assembly 11 and a horizontal telescopic assembly 12, wherein the top end of the vertical telescopic assembly 11 is connected with the horizontal telescopic assembly 12, and the horizontal telescopic assembly 12 is connected with the aeration fishing device 2. The vertical telescopic assembly 11 and the horizontal telescopic assembly 12 can be driven by a motor or can hydraulically drive a multi-stage hydraulic cylinder to form a telescopic mechanism.
By adopting the scheme, the moving device 1 can not only drive the aeration fishing device 2 to move up and down so as to fish the biofilm carrier, but also can control the biofilm carrier, so that the moving range is enlarged, the reaction tanks 3 with different specifications are adapted, and the aeration device is more conveniently controlled.
In a preferred embodiment of the present invention, the moving device 1 further comprises a rotating assembly 13, and the vertical telescopic device is connected with the horizontal telescopic assembly 12 through the rotating assembly 13. The rotating assembly 13 can be one or more of a motor and gear system, a hydraulic steering system and a manual operating rod system.
By adopting the scheme, the rotary component 13 can drive the aeration fishing device 2 to rotate by taking the vertical telescopic component 11 as a shaft, so that the moving range is enlarged, and the aeration fishing device is rotated to another reaction tank 3, so that the use of a plurality of reaction tanks 3 of one aeration fishing device 2 is realized, the utilization rate of instruments is greatly improved, and the cost is saved.
In a preferred embodiment of the present invention, aeration holes 2321 are formed on both upper and lower sides of the pocket 232. In a preferred embodiment of the present invention, the aeration holes 2321 at both sides of the pocket 232 are symmetrically arranged.
By adopting the scheme, when the aeration function is achieved, the distribution of the aeration holes 2321 is increased, and when the fishing function is used, water flow can conveniently pass through the fishing device to intercept the biomembrane carrier, so that the biomembrane carrier in the bag body 232 is prevented from being washed away.
In a preferred embodiment of the present invention, the side body 231 is divided into a first base body 2311 and a second base body 2312, the first base body 2311 is connected to the hollow rotating shaft 22 and the second base body 2312 at the side surfaces thereof, respectively, and the pocket 232 is connected to the bottom of the second base body 2312.
With the above scheme, the first substrate 2311 and the second substrate 2312 enclose at least one half of the lateral surface of the pocket 232 so as to intercept the biofilm carriers.
In a preferred embodiment of the present invention, the second substrate 2312 has an arc shape.
By adopting the scheme, the rotary resistance is reduced during aeration, and the interception area is increased during fishing.
In a preferred embodiment of the present invention, the second substrate 2312 is provided with aeration holes 2321 at both sides. In a preferred embodiment of the present invention, the aeration holes 2321 are symmetrically disposed at both sides of the second substrate 2312. Two sides of the second substrate 2312 are two side shells of the cavity.
By adopting the scheme, the second substrate 2312 reduces resistance during aeration, filters sewage during interception and intercepts a biological membrane carrier.
In a preferred embodiment of the present invention, the first substrate 2311 is provided with the aeration holes 2321 at one side thereof adjacent to the pocket 232 and is not provided with the aeration holes 2321 at the other side thereof. Two sides of the first substrate 2311 are two side shells of the cavity.
By adopting the scheme, when the aeration hole 2321 on one side of the first base body 2311 close to the pocket 232 is convenient for fishing, water flows enter the cavity and flow out of the aeration hole 2321 of the second base body 2312, so that resistance is reduced, and the aeration hole 2321 is not arranged on the other side, so that stirring effect can be improved, the flow speed of the water flow is increased, and the oxygen content is improved.
In a preferred embodiment of the present invention, the first substrate 2311 is provided with an extension 2313 at the junction with the second substrate 2312.
With the above arrangement, the extension 2313 increases the agitation and reduces the resistance caused by the second substrate 2312.
In a preferred embodiment of the present invention, a side of the first base 2311 away from the pocket 232 is concave.
By adopting the scheme, the stirring effect is increased, the flow speed of water flow is increased, and the oxygen content is improved.
Referring to fig. 3, in a preferred embodiment of the present invention, the side body 231 is inclined and the lower side is faired with the upper side of the pocket 232.
Adopt above-mentioned scheme, hollow pivot 22 is followed during the rotation of the 232 direction of pocket body, salvage the biomembrane carrier, the side 231 to the 232 direction slope of pocket body makes things convenient for the interception of the side 231 the biomembrane carrier to the 232 flow of pocket body, the interception is in the 232 interior of pocket body, when hollow pivot 22 is rotatory to another direction, the side 231 promotes rivers and upwards flows to one side for rivers circulation flow, improves the oxygen content on 3 upper portions of reaction tank.
In a preferred embodiment of the present invention, the number of the aeration impellers 23 is at least two, and the impellers are uniformly arranged on the circumference.
In a preferred embodiment of the present invention, the number of the aeration impellers 23 is three.
By adopting the scheme, the biomembrane carrier is convenient to intercept, and the stirring resistance is reduced.
In a preferred embodiment of the invention, the fluidized bed biofilm reactor based on the composite desulfurization bacteria further comprises a control system, the control system comprises a controller and a control panel, the control system is electrically connected with the aeration mechanism and controls the electric equipment, and the control panel is used for human-computer interaction.
By adopting the scheme, the fluidized bed biofilm reactor based on the composite desulfurization bacteria can be automatically controlled, and the efficiency is improved.
In a preferred embodiment of the present invention, the aeration impeller 23 is provided with a plurality of layers.
By adopting the scheme, the working area and the range of the aeration fishing device 2 are increased, and the efficiency is improved.
In a preferred embodiment of the present invention, the multi-layered aeration impeller 23 is spirally or alternately arranged. The aeration impellers 23 in the upper and lower layers are spirally distributed at the same angle in the horizontal direction, and the aeration impellers 23 in the upper layer are alternately distributed between the two aeration impellers 23 in the lower layer.
By adopting the scheme, the effective working area of the aeration impeller 23 is increased, the aeration impellers 23 play a synergistic role, the space is fully utilized, and the oxygen content and the interception effect are effectively improved.
The reaction tank 3 can be provided with a water inlet or a water outlet, or a water pump is used for realizing water inlet and water outlet.
It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a fluidized bed biofilm reactor based on compound doctor-bar, includes reaction tank (3), biomembrane carrier and aeration mechanism, its characterized in that: the biological membrane carrier is provided with composite desulfurization bacteria, and the composite desulfurization bacteria comprise thiobacillus, pseudomonas and acinetobacter;
the aeration mechanism comprises a moving device (1) and an aeration fishing device (2), the moving device (1) is connected with the reaction tank (3) or is positioned outside the reaction tank (3), the aeration fishing device (2) is connected with the moving device (1), the aeration fishing device (2) comprises a first motor (21), a hollow rotating shaft (22) and an aeration impeller (23), the first motor (21) is a forward and reverse rotating motor, the first motor (21) is in transmission connection with the hollow rotating shaft (22), the upper end of the hollow rotating shaft (22) is connected with air or an oxygen source, a cavity is arranged in the aeration impeller (23) and is communicated with the hollow of the hollow rotating shaft (22), the aeration impeller (23) comprises a side body (231) and a pocket body (232), the side end of the side body (231) is connected with the hollow rotating shaft (22), and the bottom end of the side body (231) is connected with the pocket body (232), the pocket body (232) is provided with an aeration hole (2321).
2. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of claim 1, wherein: the mobile device (1) comprises a vertical telescopic component (11) and a horizontal telescopic component (12), the top end of the vertical telescopic component (11) is connected with the horizontal telescopic component (12), and the horizontal telescopic component (12) is connected with the aeration fishing device (2).
3. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of claim 2, wherein: the mobile device (1) further comprises a rotating assembly (13), and the vertical telescopic assembly (11) is connected with the horizontal telescopic assembly (12) through the rotating assembly (13).
4. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of claim 1, wherein: the side body (231) is divided into a first base body (2311) and a second base body (2312), the side surface of the first base body (2311) is respectively connected with the hollow rotating shaft (22) and the second base body (2312), and the bottom of the second base body (2312) is connected with the pocket body (232).
5. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of claim 4, wherein: aeration holes (2321) are formed in the upper surface and the lower surface of the pocket body (232).
6. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of claim 5, wherein: both sides of the second substrate (2312) are provided with aeration holes (2321), one side of the first substrate (2311) close to the pocket body (232) is provided with the aeration holes (2321), and the other side is not provided with the aeration holes (2321).
7. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of any of claims 4-6, wherein: the first substrate (2311) is provided with an extension section (2313) at the joint with the second substrate (2312).
8. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of claim 7, wherein: one side of the first base body (2311) far away from the pocket body (232) is concave.
9. The composite desulfurizing bacteria-based fluidized bed biofilm reactor of claim 7, wherein: the side body (231) is obliquely arranged, and the lower side of the side body is in streamline connection with the upper side of the pocket body (232).
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