CN213834969U - Horizontal fixed bed reactor - Google Patents
Horizontal fixed bed reactor Download PDFInfo
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- CN213834969U CN213834969U CN202022770416.5U CN202022770416U CN213834969U CN 213834969 U CN213834969 U CN 213834969U CN 202022770416 U CN202022770416 U CN 202022770416U CN 213834969 U CN213834969 U CN 213834969U
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Abstract
The utility model relates to a horizontal fixed bed reactor, including cuboid casing, water inlet, the baffle of intaking, air aeration device, polyurethane foam strip, marsh gas aeration device, go out baffle under water, delivery port, agitating unit, go out baffle on water, dosing pipe, marsh gas vent, subregion baffle and air vent. The utility model discloses a let in containing H in the reactor2S biogas to make microorganisms use of H2S, autotrophic denitrification is carried out, no additional carbon source is needed to be added, and the effects of sewage denitrification and methane desulfurization are achieved at the same time; the utility model has no problem of methane purity reduction caused by simultaneously introducing air and methane into the vertical reactor, and does not increase the risk of mixed gas explosion; the true bookThe novel reactor is highly integrated, and the installation, the transportation and the use are all convenient.
Description
Technical Field
The utility model belongs to the water treatment field, specific saying so relates to a horizontal fixed bed reactor.
Background
The traditional sewage denitrification process is completed by utilizing the nitrification and denitrification of microorganisms, but because the content of organic carbon in a lot of sewage is low, the carbon-nitrogen ratio (C/N) of the sewage is low, and the denitrification efficiency is limited, therefore, extra carbon sources are often needed to be supplemented, the cost of sewage denitrification treatment is undoubtedly increased, and hydrogen sulfide (H) generated in the process of producing methane by anaerobic digestion2S) the use of biogas is limited due to the highly corrosive nature of these H2S can act as an electron donor for autotrophic denitrification, thus, utilizing H produced by anaerobic digestion2S is used as a substrate to carry out biological autotrophic denitrification, can simultaneously realize the sewage denitrification and the methane desulfurization processes, and has application prospect.
Currently, researchers have developed vertical fixed bed reactors and horizontal semi-block reactors for carrying out the above simultaneous denitrification and desulfurization processes, however, in vertical fixed bed reactors, due to air and H-containing gas2S marsh gas needs to be introduced from the bottom of the reactor at the same time, on one hand, the risk of mixed gas explosion is increased, on the other hand, the purity of the marsh gas is reduced due to air inclusion in the marsh gas, and the subsequent utilization is influenced.
In the horizontal semi-partitioned reactor, although air and biogas can be separately introduced into the reactor, since the microbial immobilization technology is not adopted, a sludge stirring system and a sludge circulating system are required to be added to the reactor, and the treatment cost is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a horizontal fixed bed reactor, this reactor can realize the process of sewage denitrogenation and marsh gas desulfurization simultaneously, simple and practical.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model relates to a horizontal fixed bed reactor, which comprises a rectangular shell, a water inlet is arranged at the lower part of one end of the shell, a water outlet is arranged at the upper part of the other end of the shell, a water inlet baffle is arranged at one side of the lower end in the shell close to the water inlet, the bottom edge and two side edges of the water inlet baffle are both connected with the inner wall of the shell, the upper edge of the water inlet is lower than the upper edge of the water inlet baffle, a partition baffle is arranged at the upper end in the shell, an air aeration device connected with an external air supply system is arranged at the lower part in the shell and between the water inlet baffle and the partition baffle, a water outlet baffle is arranged at one side of the lower end in the shell close to the water outlet, the bottom edge and two side edges of the water outlet baffle are both connected with the inner wall of the shell, a plurality of polyurethane foam strips are fixedly arranged between the water inlet baffle and the water outlet baffle, a methane aeration device connected with the external air supply system is arranged at the lower part in the partition baffle and between the partition baffle and the water outlet, an upper water outlet baffle is arranged at the upper end in the shell and on one side of the lower water outlet baffle close to the water outlet, a stirring device is inserted between the upper water outlet baffle and the water outlet and above the shell, and a dosing pipe is vertically inserted between the lower water outlet baffle and the upper water outlet baffle and at the top of the shell.
The utility model discloses a further improvement lies in: the number of the polyurethane foam strips is 1 or more and the polyurethane foam strips are uniformly arranged in the axial direction of the housing.
The utility model discloses a further improvement lies in: the height of the uppermost end of the polyurethane foam strip is not higher than the upper edges of the water inlet baffle and the water outlet lower baffle, and the height of the lowermost end of the polyurethane foam strip is not lower than the tops of the air aeration device and the methane aeration device.
The utility model discloses a further improvement lies in: the height of the water outlet baffle is 12mm lower than that of the water inlet baffle.
The utility model discloses a further improvement lies in: the height of the water inlet baffle is half to four fifths of the height of the shell.
The utility model discloses a further improvement lies in: the lower edge of the water outlet is lower than the upper edge of the underwater baffle.
The utility model discloses a further improvement lies in: the outlet at the lower end of the dosing pipe is lower than the upper edge of the underwater baffle.
The utility model discloses a further improvement lies in: the distance from the lower edge of the water outlet baffle plate to the bottom of the shell is one quarter to one tenth of the height of the shell.
The utility model discloses a further improvement lies in: an air exhaust port is arranged at the top of the shell and right above the air aeration device, and a methane exhaust port is arranged at the top of the shell and right above the methane aeration device.
The utility model discloses a further improvement lies in: the distance from the partition board to the water inlet baffle is the same as the distance from the partition board to the water outlet lower baffle, and the lower edge of the partition board is 20mm lower than the upper edge of the water outlet lower baffle.
The utility model has the advantages that: the utility model discloses a let in containing H in the reactor2S biogas to make microorganisms use of H2S, autotrophic denitrification is carried out, no additional carbon source is needed to be added, and the effects of sewage denitrification and methane desulfurization are achieved at the same time; the utility model has no problem of methane purity reduction caused by simultaneously introducing air and methane into the vertical reactor, and does not increase the risk of mixed gas explosion; the utility model discloses a reactor height integration, installation, transportation and use are all comparatively convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a plan view of the present invention.
Wherein: 1-a shell; 2-a water inlet; 3-a water inlet baffle; 4-an air aeration device; 5-polyurethane foam strip; 6-a methane aeration device; 7-an underwater baffle; 8-water outlet; 9-a stirring device; 10-an upper water outlet baffle; 11-a medicine feeding pipe; 12-biogas exhaust port; 13-a partition plate; 14-air vent.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
As shown in fig. 1-2, the utility model relates to a horizontal fixed bed reactor, which comprises a cuboid shell 1, a water inlet 2, a water inlet baffle 3, an air aeration device 4, a polyurethane foam strip 5, a methane aeration device 6, a water outlet lower baffle 7, a water outlet 8, a stirring device 9, a water outlet upper baffle 10, a chemical feeding pipe 11, a methane exhaust port 12, a partition baffle 13 and an air exhaust port 14, wherein the length, the width and the height of the cuboid shell 1 are 1020mm, 250mm and 250mm, the lower part of one end of the shell 1 is provided with the water inlet, the diameter of the water inlet 2 is phi =15mm, the upper part of the other end of the shell 1 is provided with the water outlet 8, the diameter of the water outlet 8 is phi =15mm, the water inlet baffle 3 is arranged on one side of the lower end inside the shell 1 close to the water inlet 2, the bottom edge and two side edges of the water inlet baffle 3 are both connected with the inner wall of the shell 1, the height of the water inlet baffle 3 is one half to four fifths of the height of the shell 1, preferably, the height of the water inlet baffle 3 is three quarters of the height of the cuboid shell 1, and the upper edge of the water inlet 2 is lower than the upper edge of the water inlet baffle 3.
The inside upper end of casing 1 is provided with subregion baffle 13, and the topside of subregion baffle 13 all with the interior wall connection of casing 1 with two sides, subregion baffle 13 arrives the distance of baffle 3 of intaking with subregion baffle 13 arrives baffle 7 under water's distance is the same, just the lower edge of subregion baffle 13 is less than go up along 20mm on baffle 7 under water, guarantee that the subregion baffle is lower to be located below the surface of water the casing 1 lower part in the baffle 3 of intaking with be provided with air aeration device 4 in the middle of the subregion baffle 13, that is to say that air aeration device 4 is located the region between baffle 3 of intaking and the subregion baffle 13, and air aeration device 4 comprises 20 micropore aeration dish and breather pipe, connecting piece, fixes in the lower part position of casing 1, and the breather pipe is responsible for and is met with outside air supply system.
An underwater baffle 7 is arranged at one side of the lower end of the inside of the shell 1 close to the water outlet 8, the bottom edge and two side edges of the underwater baffle 7 are connected with the inner wall of the shell 1, the height of the underwater baffle 7 is 12mm lower than that of the water inlet baffle 3, the lower edge of the water outlet 8 is lower than the upper edge of the underwater baffle 7, a plurality of polyurethane foam strips 5 are fixedly arranged between the water inlet baffle 3 and the water outlet lower baffle 7, the height of the uppermost end of the polyurethane foam strip 5 is not higher than the upper edges of the water inlet baffle 3 and the water outlet lower baffle 7, the height of the lowest end of the polyurethane foam strips 5 is not lower than the tops of the air aeration device 4 and the methane aeration device 6, the number of the polyurethane foam strips 5 is preferably 12, the diameter of the polyurethane foam strips 5 is 42mm, the length of the polyurethane foam strips is 710mm, and the polyurethane foam strips are uniformly arranged along the axial direction of the shell 1.
The biogas aeration device 6 is arranged at the lower part in the shell 1 between the partition plate 13 and the underwater baffle 7, namely the biogas aeration device 6 is positioned in the area between the partition plate 13 and the underwater baffle 7, the biogas aeration device 6 consists of 20 microporous aeration discs, a vent pipe and a connecting piece, and is fixed at the lower part of the cuboid shell 1, and a main pipe of the vent pipe is connected with an external biogas supply system.
1 inside upper end of casing 1 baffle 7 under going out is close to one side of delivery port 8 is provided with baffle 10 on going out, baffle 10 on going out the water the topside and both sides limit all with casing 1 is connected, the lower edge distance of baffle 10 on going out the water the distance of 1 bottom of casing does the quarter to the tenth of 1 height of casing, preferred, baffle 10 on going out the water is down the 1/6 that is the height of cuboid casing 1 along the distance from 1 bottom of cuboid casing go out baffle 10 on going out with between the delivery port 8 casing 1 top is inserted and is provided with a agitating unit 9, and agitating unit 9 comprises agitator motor, speed reducer, stirring rake and connecting circuit, and agitator motor passes through the support to be fixed in the top of casing 1, and the stirring rake inserts and sets up inside casing 1.
A dosing pipe 11 is vertically inserted between the underwater baffle 7 and the water outlet baffle 10 and at the top of the shell 1, the diameter phi of the dosing pipe 11 is =5mm, and the outlet at the lower end of the dosing pipe 11 is lower than the upper edge of the underwater baffle 7.
An air exhaust port 14 is arranged at the top of the shell 1 and right above the air aeration device 4, the diameter of the air exhaust port 14 is phi =15mm, a biogas exhaust port 12 is arranged at the top of the shell 1 and right above the biogas aeration device 6, and the diameter of the biogas exhaust port 12 is phi =15 mm.
The utility model discloses a theory of operation is: sewage enters a horizontal fixed bed reactor from a water inlet 2, flows into a region between a water inlet baffle 3 and a partition plate 13 from the water inlet baffle 3, is aerated by an air aeration device 4 to form an aerobic region, redundant air is discharged from an air exhaust port 14, microorganisms fixed on polyurethane foam strips 5 carry out aerobic treatment and aerobic nitrification on the sewage, and then the sewage flows to the region between the partition plate 13 and a water outlet lower baffle plate 7, and an anoxic region is formed because the air aeration is not carried out in the region, and in the region, a methane aeration device 6 contains H2Introducing S biogas into the sewage, discharging the residual biogas from the biogas outlet 12, and utilizing H by the microorganisms fixed on the polyurethane foam strip 52S is taken as an electron donor to carry out autotrophic denitrification for achieving the purpose of denitrification, and H simultaneously2S is oxidized to be elemental sulfur and exists in the sewage, sewage flows into the area between baffle 7 under the play water and the baffle 10 on the play water by baffle 7 under the play water afterwards, it mixes with sewage to add Polymeric Aluminum Chloride (PAC) through adding medicine mouth 11, sewage flows into the area between baffle 10 on the play water and the 1 end of cuboid casing afterwards, utilize agitating unit 9 to carry out intensive mixing, coagulate elemental sulfur and other suspended solids in the sewage, sewage is flowed out by delivery port 8 at last, carry out subsequent processing.
The utility model is based on the basic principle of aerobic nitrification and autotrophic denitrification, and respectively leads in air and H in an aerobic area and an anoxic area in a reactor2S, aerobic nitrification of immobilized microorganisms and utilization of H2S carries out autotrophic denitrification without adding extra carbon source, and simultaneously achieves the effects of sewage denitrification and methane desulfurization.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A horizontal fixed bed reactor, includes rectangular casing (1), its characterized in that: a water inlet is arranged at the lower part of one end of the shell (1), a water outlet (8) is arranged at the upper part of the other end of the shell (1), a water inlet baffle (3) is arranged at one side of the lower end in the shell (1) close to the water inlet (2), the bottom edge and two side edges of the water inlet baffle (3) are connected with the inner wall of the shell (1), the upper edge of the water inlet (2) is lower than the upper edge of the water inlet baffle (3), a partition plate (13) is arranged at the upper end in the shell (1), an air aeration device (4) connected with an external air supply system is arranged at the lower part in the shell (1) between the water inlet baffle (3) and the partition plate (13), an underwater baffle (7) is arranged at one side of the lower end in the shell (1) close to the water outlet (8), and the bottom edge and two side edges of the underwater baffle (7) are connected with the inner wall of the shell (1), a plurality of polyurethane foam strips (5) are fixedly arranged between the water inlet baffle (3) and the water outlet baffle (7), a methane aeration device (6) connected with an external methane gas supply system is arranged between the partition board (13) and the water outlet baffle (7) at the inner lower part of the shell (1), a water outlet baffle (10) is arranged at one side, close to the water outlet (8), of the water outlet baffle (7) at the inner upper end of the shell (1), a stirring device (9) is inserted between the water outlet baffle (10) and the water outlet (8) above the shell (1), and a medicine adding pipe (11) is vertically inserted between the water outlet baffle (7) and the water outlet baffle (10) and at the top of the shell (1).
2. The horizontal fixed bed reactor of claim 1, wherein: the number of the polyurethane foam strips (5) is 1 or more and the polyurethane foam strips (5) are uniformly arranged in the axial direction of the housing (1).
3. The horizontal fixed bed reactor of claim 1 or 2, wherein: the height of the uppermost end of the polyurethane foam strip (5) is not higher than the upper edges of the water inlet baffle (3) and the water outlet baffle (7), and the height of the lowermost end of the polyurethane foam strip (5) is not lower than the tops of the air aeration device (4) and the methane aeration device (6).
4. The horizontal fixed bed reactor of claim 1, wherein: the height of the underwater baffle (7) is 12mm lower than that of the water inlet baffle (3).
5. The horizontal fixed bed reactor of claim 1, wherein: the height of the water inlet baffle (3) is half to four fifths of the height of the shell (1).
6. The horizontal fixed bed reactor of claim 1, wherein: the lower edge of the water outlet (8) is lower than the upper edge of the underwater baffle (7).
7. The horizontal fixed bed reactor of claim 1, wherein: the outlet at the lower end of the dosing pipe (11) is lower than the upper edge of the underwater baffle (7).
8. The horizontal fixed bed reactor of claim 1, wherein: the distance between the lower edge of the water outlet baffle (10) and the bottom of the shell (1) is one fourth to one tenth of the height of the shell (1).
9. The horizontal fixed bed reactor of claim 1, wherein: an air exhaust port (14) is arranged at the top of the shell (1) and right above the air aeration device (4), and a methane exhaust port (12) is arranged at the top of the shell (1) and right above the methane aeration device (6).
10. The horizontal fixed bed reactor of claim 1, wherein: the distance from the partition board (13) to the water inlet baffle (3) is the same as the distance from the partition board (13) to the underwater baffle (7), and the lower edge of the partition board (13) is 20mm lower than the upper edge of the underwater baffle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022770416.5U CN213834969U (en) | 2020-11-26 | 2020-11-26 | Horizontal fixed bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022770416.5U CN213834969U (en) | 2020-11-26 | 2020-11-26 | Horizontal fixed bed reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213834969U true CN213834969U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022770416.5U Active CN213834969U (en) | 2020-11-26 | 2020-11-26 | Horizontal fixed bed reactor |
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| CN (1) | CN213834969U (en) |
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