CN213326936U

CN213326936U - Bioreactor

Info

Publication number: CN213326936U
Application number: CN202021717886.9U
Authority: CN
Inventors: 徐浩然; 陈福明; 刘淑杰; 但锦锋
Original assignee: Qingyan Environmental Technology Co Ltd
Current assignee: Qingyan Environmental Technology Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-06-01
Anticipated expiration: 2030-08-17

Abstract

The application discloses a bioreactor: a reactor housing comprising a plurality of vertical reactor sidewalls, and a top cover connected over the sidewalls; the partition plate comprises a plurality of vertical plate bodies, the side edges of the vertical plate bodies are connected with the side wall of the reactor, and the upper ends of the vertical plate bodies are connected with the top cover; the carrier grid rod is horizontally arranged, and two ends of the carrier grid rod are connected with the side wall of the reactor or the partition plate; a suspended carrier suspended in the interior space of the bioreactor under the support of the carrier grid; the water collecting tank is arranged below the reactor shell, the side wall of the water collecting tank is provided with a backflow port, and an overflow port is arranged on a horizontal plane higher than the backflow port; the water distribution system comprises water distributors and water distribution pipelines, wherein the water distributors are arranged below the top cover of the reactor shell, the water distributors penetrate through the partition plates and are uniformly distributed at the tops of the reaction zones, and the water distribution pipelines are communicated with the reflux ports and the water distributors outside the reactor shell.

Description

Bioreactor

Technical Field

The application relates to the technical field of sewage treatment, in particular to a bioreactor.

Background

The sewage treatment process mainly comprises two main categories of physical and chemical treatment and biological treatment, wherein the biological treatment has the characteristics of low cost and thorough purification, so the biological treatment is a main technical means for domestic sewage treatment, and the biological trickling filter is a commonly used biological treatment device.

The biological trickling filter is characterized in that crushed stone blocks or other artificial filter materials are filled in the biological trickling filter, waste water is distributed from the top of the biological trickling filter through a water distribution system, suspended substances in the waste water are intercepted by the filter materials when the waste water passes through the biological trickling filter, so that microorganisms are bred quickly, the microorganisms further adsorb soluble and colloidal organic matters in the waste water, the microorganisms gradually grow and form a biological film, and the biological trickling filter purifies the waste water by means of the adsorption and oxidation of the biological film on the surface of the filter materials on the organic matters in the waste water.

However, the volume of the filter material of the traditional biochemical reactor accounts for too large proportion in the volume of the biological trickling filter, and the volume of the filter material is useless, so that the specific surface area of the whole unit volume is small, and the amount of microorganisms in the unit volume is not high; in addition, the filter materials are piled up in disorder, so that not only is the waste of the effective surface of the filter materials at the piled contact position caused, but also the channel is easy to block, and a dead zone which has no effect on sewage purification is formed; moreover, the filter material layer occupies a larger area due to the unstable structure of the filter material accumulated in the tank body; and the application environment is only limited to aerobic environment, and additional process support is needed for denitrification, so that the construction cost and the operation difficulty are increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bioreactor to the shortcoming of current mode for solve the problem that the biochemical reactor area that prior art exists is big, the treatment effeciency is lower and can't the integration denitrogenation.

A bioreactor, comprising:

the reactor shell comprises a plurality of vertical reactor side walls with projections in a horizontal plane forming each side of a polygon, and a top cover connected with the upper part of each side wall;

the partition plate comprises a plurality of vertical plate bodies, the side edges of the vertical plate bodies are connected with the side wall of the reactor, the upper ends of the vertical plate bodies are connected with the top cover, and the reactor shell is divided into a plurality of reaction zones;

the carrier grid rod is horizontally arranged, and two ends of the carrier grid rod are connected with the side wall of the reactor or the partition plate;

a suspended carrier suspended in the inner space of the bioreactor under the support of the carrier grid for carrying a biofilm;

the water collecting tank is arranged below the reactor shell, the side wall of the water collecting tank is provided with a backflow port, and an overflow port is arranged on a horizontal plane higher than the backflow port;

the water distribution system comprises water distributors and water distribution pipelines, wherein the water distributors are arranged below the top cover of the reactor shell, the water distributors penetrate through the partition plates and are uniformly distributed at the tops of the reaction zones, and the water distribution pipelines are communicated with the reflux ports and the water distributors outside the reactor shell.

Specifically, the plurality of reaction zones include an aerobic reaction zone having a ventilation structure and an anoxic reaction zone having a non-ventilation structure.

More specifically, the side wall of the reactor enclosing the aerobic reaction zone is provided with vent holes, and the vent holes are arranged at the upper end and the lower end of the side wall, so that the aerobic reaction zone can ventilate naturally. Or, the side wall of the vertical reactor which is enclosed into the aerobic reaction zone is provided with a vent hole, the vent hole is arranged at the lower end of the side wall, an air outlet is arranged in the horizontal projection area of the aerobic reaction zone on the top cover, and the air outlet is connected with an exhaust system to lead the aerobic reaction zone to ventilate forcibly.

More specifically, the lower end of a partition plate enclosing the anoxic reaction zone extends into the water collecting tank, and the height between the lower end of the partition plate and the bottom of the water collecting tank is smaller than the height between the overflow port and the bottom of the water collecting tank.

Furthermore, the carrier grid rods are straight rods or threaded rods with rough surfaces, and are arranged in the aerobic reaction zone and the anoxic reaction zone in parallel according to preset transverse intervals and vertical intervals.

Further, the hanging carriers are strip-like fabrics which are independent of each other, or the strip-like fabrics hanging from the same carrier bar are at least partially connected into a sheet.

Preferably, a plurality of hanging holes are formed in the end part or the middle part of the hanging carrier, and the carrier grid rods penetrate through the hanging holes to realize hanging.

Compare in prior art, the beneficial effect of this application lies in:

the suspended biological carrier is adopted as a biological carrier arrangement mode, so that the surface utilization rate of the biological carrier can be effectively improved, the blockage of the biological trickling filter is avoided, the biomass per unit volume in the biological treatment device is improved, the material exchange is enhanced, and the sewage treatment efficiency is improved. And the integrated denitrification capability is realized, and the construction cost and the operation difficulty are reduced.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural diagram of the bioreactor;

FIG. 2 is a partial cross-sectional view of the present bioreactor (with carrier);

FIG. 3 is a partial cross-sectional view of the present bioreactor (without carrier);

FIG. 4 is a schematic view of the bioreactor;

FIG. 5 is a top cross-sectional view of the present bioreactor (without support);

description of reference numerals:

1-a top cover; 2-reactor side wall; 21-front side wall; 22-left side wall; 23-right side wall; 24-a back side wall; 3-a water collecting tank; 4-a reflux port; 5-an overflow port; 6-a reflux system; 7-a vent hole; 8-water distribution pipeline; 9-a water distributor; 10-hanging a carrier; 11-carrier grid rods; 12-a partition plate; 13-an aerobic reaction zone; 14-anoxic reaction zone.

Detailed Description

As shown in fig. 1 to 5, is a bioreactor comprising:

the reactor comprises a reactor shell, a reactor shell and a reactor cover, wherein the reactor shell comprises a plurality of vertical reactor side walls 2 with projections in a horizontal plane forming each side of a polygon, and a top cover 1 connected with the upper part of the side walls;

a partition plate 12 including a plurality of vertical plate bodies having side edges connected to the reactor side wall 2 and upper ends connected to the top cover 1, for partitioning the reactor shell into a plurality of reaction zones;

a carrier grid rod 11 arranged in parallel with the partition plate 12, both ends of which are connected with the reactor side wall 2 or the partition plate 12;

a hanging carrier 10 hanging in the inner space of the bioreactor under the support of the carrier grid 11 for carrying biofilm;

the water collecting tank 3 is arranged below the reactor shell, the side wall of the water collecting tank 3 is provided with a return port 4, and an overflow port 5 is arranged on a horizontal plane higher than the return port 4;

the water distribution system comprises water distributors 9 and water distribution pipelines 8, wherein the water distributors 9 are arranged below the top cover 1 of the reactor shell, the water distributors 9 penetrate through the partition plates 12 and are uniformly distributed at the tops of the reaction zones, and the water distribution pipelines 8 are communicated with the reflux ports 4 and the water distributors 9 outside the reactor shell.

Specifically, a 4-piece rectangular stainless steel plate having a size of 1000mm × 5000mm × 3mm was used as the reactor side wall 2 of the present bioreactor, and was named as a front side wall 21, a left side wall 22, a right side wall 23, and a back side wall 24 (not shown) in terms of orientation, respectively; a stainless steel square plate with the thickness of 1000mm multiplied by 3mm is adopted as a

top cover

1, and 4 reactor side walls and 1 top cover are assembled into a reactor shell through welding. The upper part and the lower part of the two opposite side walls are respectively provided with the air vent 7, and the air vent 7 is preferably arranged on the left side wall 22 and the right side wall 23.

2 rectangular stainless steel plates of 1000mm × 5300mm × 3mm are used as partition plates 12, the two partition plates are placed in parallel in the reactor at a distance of 400mm and are connected and fixed, and the bioreactor is divided into two aerobic reaction zones 13 of 1000mm × 300mm and one anoxic reaction zone 14 of 1000mm × 400 mm. The water distributor 9 is arranged below the top cover 1, passes through the two partition boards and is fixed, so that the whole reaction zone is completely covered, namely the aerobic reaction zone 13 and the anoxic reaction zone 14 are included.

Further, in order to ensure the anoxic environment of the anoxic reaction zone 14, in addition to no ventilation hole and no forced ventilation, the lower end of the partition plate 12 enclosing and forming the anoxic reaction zone 14 extends into the collecting tank 3, the height between the lower end of the partition plate and the bottom of the collecting tank is smaller than the height between the overflow port and the bottom of the collecting tank, when the collecting tank is filled with reaction liquid, the bottom of the anoxic reaction zone 14 is sealed by liquid, and the non-ventilation environment of the anoxic reaction zone 14 is further ensured.

In addition to the ventilation holes 7 formed in the left side wall 22 and the right side wall 23 to achieve natural ventilation as described above, the ventilation holes 7 formed in the upper ends of the left side wall 22 and the right side wall 23 may be replaced with an air outlet (not shown) of the aerobic reaction zone 13 on the projection plane of the top cover 1, and the air outlet is connected to an exhaust system to achieve forced ventilation of the aerobic reaction zone 13.

The arrangement of the partition plate 12 in the reactor shell may be appropriately adjusted, for example, by switching from the arrangement parallel to the left side wall 22 to the arrangement parallel to the back side wall 24, or by providing both the partition plate parallel to the left side wall 22 and the partition plate parallel to the back side wall 24 and by selectively providing an air flow structure (for example, a vent hole or an air outlet) in the reaction region defined by the surrounding structures, the aerobic reaction region 13 and the anoxic reaction region 14 may be provided.

32 hollow round rods with the length of 1000mm and the diameter of 20mm are used as carrier grid rods 11, the 32 round rods are divided into four groups, four rows of parallel holes are respectively formed in the back side wall 24 without the vent holes at the distance of 600mm, 1700mm, 2800mm and 3900mm from the top cover, and the carrier grid rods are inserted and fixed. Adopting 32 pieces of 1500mm 1000mm 1mm terylene non-woven fabrics, forming 15 circular through hanging holes with the diameter of 20mm on the upper part to obtain a hanging carrier 10, and uniformly fixing the hanging carrier 10 on a carrier grid rod 11 through the through hanging holes. In order to prevent the suspended carriers 10 from being displaced to fall off the carrier bars 11 during use or from being displaced to cause overlap between the suspended carriers 10 and affect mass transfer, the surfaces of the carrier bars 11 are polished to rough surfaces, even with threaded rods, to increase the surface friction between the carrier bars 11 and the suspended carriers 10. Alternatively, the support grid 11 can be fixed by providing parallel holes in the partition plate 12, inserting the partition plate 12 and the adjacent reactor side wall 2.

Further, the hanging carrier 10 on each carrier bar 11 may be a plurality of mutually independent strip-shaped non-woven polyester fabrics, and the mutually independent strip-shaped non-woven polyester fabrics keep a certain distance during hanging, so as to avoid overlapping and reduce the specific surface area per unit volume. In another possible embodiment, the non-woven polyester fabrics hung on the same carrier bar are connected into a sheet, as shown in fig. 4, or the top end, the upper half part or the lower half part of the non-woven polyester fabric can be connected into a whole. It will be appreciated by those skilled in the art that the use of a polyester non-woven fabric as a carrier is only a preferred embodiment, and other fabrics, such as fabrics made of other polymeric materials, may also be used as carriers in accordance with common general knowledge.

A non-cover cube which is 1050mm multiplied by 800mm and is processed by a stainless steel plate with the thickness of 3mm is used as a water collecting tank 3, a backflow hole 4 which is 200mm away from the bottom surface and an overflow hole 5 which is 600mm away from the bottom surface are arranged on the water collecting tank, the backflow hole 4 is connected with a backflow system 6, then the backflow hole is intersected with a water distribution pipeline 8, and finally the water distribution pipeline 9 is connected.

The utility model provides a bioreactor during operation, pending sewage passes through water distribution pipeline 8 and gets into this reactor, through 9 homodisperses of water-locator in whole reaction zone, through hanging carrier 10 arrays, falls into catch basin 3, will nitrify liquid according to certain reflux ratio and flow back to the reactor, and the surplus water passes through overflow mouth 5 and goes out water. Under the condition of forced ventilation, air in the reactor enters from the lower vent and is forcibly pumped out through the upper vent, and the air is pumped out for subsequent tail gas treatment.

In conclusion, the biological carrier arrangement mode is adopted in the biological carrier arrangement mode, the surface utilization rate of the biological carrier can be effectively improved, the blockage of the biological trickling filter is avoided, the biomass per unit volume in the biological treatment device is improved, the material exchange is enhanced, and the sewage treatment efficiency is improved. And the integrated denitrification capability is realized, and the construction cost and the operation difficulty are reduced.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims

1. A bioreactor, comprising:

the partition plate comprises a plurality of vertical plate bodies, the side edges of the vertical plate bodies are connected with the side wall of the reactor, the upper ends of the vertical plate bodies are connected with the top cover, and the reactor is divided into a plurality of reaction zones;

2. The bioreactor of claim 1, wherein the plurality of reaction zones comprises an aerobic reaction zone having a ventilated configuration and an anoxic reaction zone having a non-ventilated configuration.

3. The bioreactor of claim 2, wherein said side walls of said reactor enclosing said aerobic reaction zone are formed with vent holes, said vent holes being disposed at upper and lower ends of said side walls to provide natural ventilation of said aerobic reaction zone.

4. The bioreactor of claim 2, wherein the vertical reactor side wall enclosing the aerobic reaction zone is provided with a vent hole, the vent hole is arranged at the lower end of the side wall, an air outlet is arranged on the top cover in the horizontal projection area of the aerobic reaction zone, and the air outlet is connected with an exhaust system to forcibly ventilate the aerobic reaction zone.

5. The bioreactor of claim 2, wherein the lower end of a partition plate enclosing the anoxic reaction zone extends into the collecting tank, and the height between the lower end of the partition plate and the bottom of the collecting tank is smaller than the height between the overflow port and the bottom of the collecting tank.

6. The bioreactor of claim 2, wherein the carrier grid rods are straight rods or threaded rods with rough surfaces, and are arranged in the aerobic reaction zone and the anoxic reaction zone in parallel at preset transverse intervals and vertical intervals.

7. Bioreactor according to claim 1, characterized in that the hanging carriers are strip-like fabrics, which are independent of each other or which are at least partially connected in pieces hanging on the same carrier grid.

8. The bioreactor of claim 7, wherein a plurality of hanging holes are arranged on the end or the middle part of the hanging carrier for the carrier grid rods to penetrate through to realize hanging.