CN111748451B - Anaerobic digestion reaction device based on self-sustaining air supporting screening - Google Patents
Anaerobic digestion reaction device based on self-sustaining air supporting screening Download PDFInfo
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Abstract
The invention discloses an anaerobic digestion reaction device based on self-sustaining air flotation screening, which comprises a base, wherein a reaction tank is arranged above the middle position of the base, self-sustaining air flotation screening tanks are respectively arranged on two sides of the reaction tank, the lower end of the self-sustaining air flotation screening tank is connected with the base through a supporting seat, a U-shaped cavity is arranged on the self-sustaining air flotation screening tank, a feeding pump is arranged on one side in the supporting seat, the output end of the feeding pump is connected with one end of the U-shaped cavity, a sludge discharge port is arranged at the other end of the U-shaped cavity, the anaerobic digestion reaction device based on self-sustaining air flotation screening carries out reaction operation through the arranged reaction tank, the self-sustaining air flotation screening tanks are additionally arranged on two sides of the reaction tank, high-activity methane-producing microorganisms are screened and returned to the reaction tank through the self-sustaining air flotation screening tank, and inert heavy refractory substances are discharged through the, replace traditional formula ejection of compact of mixing entirely, and then make the inert in the ejection of compact more, avoid influencing the degradation effect in the retort.
Description
Technical Field
The invention relates to the technical field of anaerobic digestion of wastes, in particular to an anaerobic digestion reaction device based on self-sustaining air flotation screening.
Background
Anaerobic digestion is a chain reaction process with complex reaction, and consists of four processes of hydrolysis, acidification, acetogenesis/dehydrogenation and methanogenesis, wherein each degradation step is completed by different floras which are in an interdependent relationship to a certain extent, and the requirements on the environment are different. The accumulation of hydrogen can inhibit the activity of acetic acid bacteria, so that the maintenance of a lower hydrogen partial pressure is very important for hydrogen-producing and acetic acid-producing bacteria, the whole anaerobic digestion process can be combined into two major stages of hydrolysis acid production and methane production, and after the reaction of the conventional anaerobic digestion reactor is finished, the conventional fully-mixed discharge is adopted for discharging, and discharged inert materials which are not completely degraded are not discharged, so that the degradation effect of the anaerobic digestion reactor is not facilitated.
Disclosure of Invention
Aiming at the problems, the invention aims to provide an anaerobic digestion reaction device based on self-sustaining air flotation screening, the anaerobic digestion reaction device based on self-sustaining air flotation screening carries out reaction operation through an arranged reaction tank, the self-sustaining air flotation screening tanks are additionally arranged on two sides of the reaction tank, high-activity methane-producing microorganisms are screened and reflowed into the reaction tank through the self-sustaining air flotation screening tanks, inert heavy refractory substances are discharged from a sludge discharge port through precipitation, the traditional full-mixing type discharging is replaced, more inert substances are contained in the discharged materials, and the degradation effect in the reaction tank is prevented from being influenced.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: the utility model provides an anaerobic digestion reaction unit based on self-sustaining air supporting screening, includes the base, the top of base intermediate position is equipped with the retort, the both sides of retort all are equipped with self-sustaining air supporting screening jar, the lower extreme of self-sustaining air supporting screening jar is connected and self-sustaining air supporting screening jar is equipped with the U die cavity through supporting seat and base, one side is equipped with the charge pump in the supporting seat, the output of charge pump is connected with the one end of U die cavity, the mud discharge mouth is installed to the other end of U die cavity, be equipped with backward flow delivery pump between mud discharge mouth and the charge pump, the upper end of backward flow delivery pump is passed through the pipeline and is connected with the buffer storage tank, the feed inlet is installed to the upper end of buffer storage tank, the upper end of feed inlet is run through self-sustaining air supporting screening jar.
The further improvement lies in that: the lower extreme cross-section of retort all is equipped with annular fixing base for the both sides of semi-circular and retort below, be equipped with the cavity in the medial surface of annular fixing base and the lower extreme lateral surface adaptation of retort and the annular fixing base, install the heating pipe in the cavity, the heating pipe evenly is provided with the medial surface of multiunit and laminating annular fixing base.
The further improvement lies in that: the intermediate position of retort top is equipped with just reversing motor, just reversing motor passes through the motor mount pad and is connected with the retort and just reversing motor's output passes through the shaft coupling to be installed the pivot, the lower extreme of pivot runs through the retort through the bearing and installs the mixing rod, the mixing rod evenly is provided with the multiunit, the below of mixing rod all is equipped with crooked agitator plate in the both sides of pivot.
The further improvement lies in that: one side of crooked stirring board is installed on the retort and is got the material mouth, the position of getting the material mouth corresponds and gets and install a heat-insulating section of thick bamboo in the material mouth with crooked stirring board, the one end of a heat-insulating section of thick bamboo runs through and installs in annular fixing base and the heat-insulating section of thick bamboo and get the material pipeline, it is connected with the input of charge pump through the pipeline on the material pipeline to get.
The further improvement lies in that: and a bearing plate is arranged on one side of the supporting seat through a supporting vertical plate and is positioned right above the self-supporting air flotation screening tank.
The further improvement lies in that: the reactor is characterized in that a feed opening and a liquid inlet are respectively arranged on two sides of the positive and negative rotation motor on the reaction tank, backflow feed openings are respectively arranged on two sides below the feed opening and the liquid inlet on the reaction tank, and the backflow feed openings are communicated with a backflow feed delivery pump through pipelines.
The further improvement lies in that: temperature monitor and PH value detector are installed respectively to the both sides of retort, the discharge gate is installed to the lower extreme of retort.
The invention has the beneficial effects that: the anaerobic digestion reaction device based on self-sustaining air flotation screening carries out reaction operation through the arranged reaction tank, the self-sustaining air flotation screening tanks are additionally arranged on both sides of the reaction tank, the self-sustaining air flotation screening tanks screen and reflux the high-activity methanogenic microorganisms into the reaction tank and discharge the inert heavy refractory substances from a sludge discharge port through sedimentation to replace the traditional full-mixing type discharge, so that more inert substances are discharged, the degradation effect in the reaction tanks is avoided being influenced, the time for maintaining the device at regular intervals can be staggered by the reaction tanks at the two sides, when the reaction tank on one side is maintained, the reaction tank on the other side can still make the device perform reaction operation, thereby avoiding delaying processing, in addition, a rotating shaft is arranged in the reaction tank, a bending stirring plate is arranged on the rotating shaft, the bending stirring plate corresponds to the position of the material taking port, the fluidity of the bottom digestion material can be enhanced during rotation, thereby being beneficial to the feeding pump to extract the digestion material from the material taking port.
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FIG. 1 is a schematic front view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Wherein: 1. a base; 2. a reaction tank; 3. a self-sustaining air flotation screening tank; 4. a supporting seat; 5. a feed pump; 6. a sludge discharge port; 7. a reflux delivery pump; 8. a buffer storage tank; 9. a feed inlet; 10. an annular fixed seat; 11. heating a tube; 12. a positive and negative rotation motor; 13. a motor mounting seat; 14. a rotating shaft; 15. a mixing rod; 16. bending the stirring plate; 17. a material taking port; 18. a heat insulating cylinder; 19. a material taking pipeline; 20. supporting a vertical plate; 21. a bearing plate; 22. a feeding port; 23. a liquid inlet; 24. a reflux feed inlet; 25. a temperature monitor; 26. a pH value detector; 27. a discharge port; 101. a cavity; 301. and a U-shaped cavity.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1 and 2, the embodiment provides an anaerobic digestion reaction device based on self-sustaining air flotation screening, which comprises a base 1, wherein a plurality of groups of support columns are uniformly arranged below the base 1, a reaction tank 2 is arranged above the middle position of the base 1, self-sustaining air flotation screening tanks 3 are arranged on two sides of the reaction tank 2, the lower ends of the self-sustaining air flotation screening tanks 3 are connected with the base 1 through support seats 4, the self-sustaining air flotation screening tanks 3 are provided with U-shaped cavities 301, another function of the support seats 4 is to support the self-sustaining air flotation screening tanks 3, a feed pump 5 is arranged on one side in each support seat 4, the output end of the feed pump 5 is connected with one end of each U-shaped cavity 301, a sludge discharge port 6 is arranged at the other end of each U-shaped cavity 301, the sludge discharge port 6 is a sealing valve provided with a control switch, a backflow material conveying pump 7 is arranged between the sludge discharge port 6 and the feed pump 5, the upper, feed inlet 9 is installed to buffer storage tank 8's upper end, and buffer storage tank 8's both sides are passed through the support and are connected with self-sustaining air supporting screening jar 3, in feed inlet 9's upper end runs through self-sustaining air supporting screening jar 3 and extends and puts into U die cavity 301, feed inlet 9's upper end extends to and extends certain distance in going into U die cavity 301, and this distance is less than U die cavity 301 internal diameter's half, and feed pump 5 and backward flow delivery pump 7 all through the support mounting in supporting seat 4 and supporting seat 4 be close to one side of mud discharging mouth 6 and set up for not sealing, the work of being convenient for.
The both sides of the lower extreme cross-section of retort 2 for semi-circular and 2 below retort all are equipped with annular fixing base 10, be equipped with cavity 101 in the medial surface of annular fixing base 10 and the lower extreme lateral surface adaptation of retort 2 and the annular fixing base 10, install heating pipe 11 in the cavity 101, heating pipe 11 evenly is provided with the medial surface of multiunit and laminating annular fixing base 10, interconnect between the heating pipe 11 and with external control ware electric link, heats through the heating pipe 11 of 2 lower extremes of laminating retort, makes the conduction efficiency of heating faster.
The intermediate position of 2 tops of retort is equipped with just reversing motor 12, just reversing motor 12 is connected with retort 2 through motor mount pad 13 and just reversing motor 12's output passes through the shaft coupling and installs pivot 14, the lower extreme of pivot 14 runs through retort 2 through the bearing and installs mixing rod 15, mixing rod 15 evenly is provided with the multiunit, mixing rod 15's below all is equipped with crooked stirring board 16 in the both sides of pivot 14.
One side of crooked stirring board 16 installs on retort 2 and gets material mouth 17, get the position of material mouth 17 and crooked stirring board 16 correspond and get and install a thermal-insulated section of thick bamboo 18 in the material mouth 17, the one end of a thermal-insulated section of thick bamboo 18 runs through annular fixing base 10 and installs in a thermal-insulated section of thick bamboo 18 and get material pipeline 19, it is connected with the input of charge pump 5 through the pipeline on the material pipeline 19 to get.
And a bearing plate 21 is arranged on one side of the supporting seat 4 through a supporting vertical plate 20, and the bearing plate 21 is positioned right above the self-sustaining air flotation screening tank 3 and used for protecting the right above the self-sustaining air flotation screening tank 3.
The two sides of the positive and negative rotation motor 12 on the reaction tank 2 are respectively provided with a feed opening 22 and a liquid inlet 23, the two sides below the feed opening 22 and the liquid inlet 23 are respectively provided with a backflow feed opening 24 on the reaction tank 2, and the backflow feed opening 24 is communicated with a backflow feed delivery pump 7 through a pipeline.
After the invention starts to work, the material enters the reaction tank 2 through the feed opening 22, at the moment, the heating pipe 11 is started, the temperature and the pH value in the reaction tank 2 are monitored by the cooperation of a controller, a temperature monitor 25 and a pH value detector 26 manually, the temperature in the reaction tank 2 is required to be kept at about 37 ℃, then the forward and reverse rotating motor 12 is started, the forward and reverse rotating motor 12 drives the rotating shaft 14 to rotate, the digested material is conveyed into the self-sustained air flotation screening tank 3 by the feed pump 5, then the digested material enters one end of the U-shaped cavity 301, along with continuous feeding, the liquid level rises over the upper end part of the U-shaped cavity 301 and overflows into the other end of the U-shaped cavity 301, along with micro bubbles generated by the digested material, the micro bubbles lift the light high-activity methane-producing microorganisms into the feed opening 9, and then the screened high-activity methane-producing microorganisms are conveyed back into the reaction tank 2 by the reflux pump 7, a virtuous cycle is formed.
The anaerobic digestion reaction device based on self-sustaining air flotation screening carries out reaction operation through the arranged reaction tank 2, the self-sustaining air flotation screening tanks 3 are additionally arranged on the two sides of the reaction tank 2, high-activity methane-producing microorganisms are screened and returned to the reaction tank 2 through the self-sustaining air flotation screening tanks 3, inert heavy refractory substances are discharged through a sludge discharge port 6 through sedimentation, the traditional full-mixing type discharging is replaced, more inert substances in the discharging are further enabled, the degradation effect in the reaction tank 2 is prevented from being influenced, the time of a regular maintenance device can be carried out in a staggered mode through the reaction tanks 2 on the two sides, when the reaction tank 2 on one side is maintained, the reaction tank 2 on the other side can still carry out reaction operation, and therefore delay processing is avoided, in addition, a rotating shaft 14 is arranged in the reaction tank 2, a bent stirring plate 16 is arranged on the rotating shaft 14, the bent stirring plate 16 corresponds to the position of a taking plate 17, the fluidity of the bottom digested material is enhanced during rotation to facilitate the extraction of digested material from the extraction port 17 by the feed pump 5.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides an anaerobic digestion reaction unit based on self-sustaining air supporting screening, includes base (1), its characterized in that: the reaction tank (2) is arranged above the middle position of the base (1), the lower end section of the reaction tank (2) is semicircular, annular fixing seats (10) are arranged on two sides below the reaction tank (2), cavities (101) are arranged in the inner side faces of the annular fixing seats (10) and the outer side faces of the lower end of the reaction tank (2) in a matching mode, heating pipes (11) are installed in the cavities (101), the heating pipes (11) are evenly provided with a plurality of groups and fit the inner side faces of the annular fixing seats (10), a forward and reverse motor (12) is arranged at the middle position above the reaction tank (2), the forward and reverse motor (12) is connected with the reaction tank (2) through a motor mounting seat (13) and the output end of the forward and reverse motor (12) is provided with a rotating shaft (14) through a coupler, the lower end of the rotating shaft (14) penetrates through the reaction tank (2) through a bearing and is provided, a plurality of groups of mixing rods (15) are uniformly arranged, and bent stirring plates (16) are arranged below the mixing rods (15) on two sides of the rotating shaft (14); a material taking opening (17) is formed in one side of the bent stirring plate (16) on the reaction tank (2), the position of the material taking opening (17) corresponds to the bent stirring plate (16), a heat insulation cylinder (18) is installed in the material taking opening (17), one end of the heat insulation cylinder (18) penetrates through the annular fixing seat (10), a material taking pipeline (19) is installed in the heat insulation cylinder (18), and the material taking pipeline (19) is connected with the input end of the feeding pump (5) through a pipeline; the two sides of the reaction tank (2) are respectively provided with a self-supporting air flotation screening tank (3), the lower end of the self-supporting air flotation screening tank (3) is connected with the base (1) through a supporting seat (4), the self-supporting air flotation screening tank (3) is provided with a U-shaped cavity (301), one side of the supporting seat (4) is provided with a feeding pump (5), the output end of the feeding pump (5) is connected with one end of the U-shaped cavity (301), the other end of the U-shaped cavity (301) is provided with a sludge discharge port (6), a backflow material conveying pump (7) is arranged between the sludge discharge port (6) and the feeding pump (5), the upper end of the backflow material conveying pump (7) is connected with a buffer storage tank (8) through a pipeline, the upper end of the buffer storage tank (8) is provided with a feeding port (9), the upper end of the feeding port (9) penetrates through the self-supporting air flotation screening tank (3) and extends into, and the distance is less than one half of the inner diameter of the U-shaped cavity.
2. The anaerobic digestion reaction device based on self-sustaining air-flotation screening as claimed in claim 1, wherein: one side of the supporting seat (4) is provided with a bearing plate (21) through a supporting vertical plate (20), and the bearing plate (21) is positioned right above the self-supporting air flotation screening tank (3).
3. The anaerobic digestion reaction device based on self-sustaining air-flotation screening as claimed in claim 1, wherein: the reactor is characterized in that a feed opening (22) and a liquid inlet (23) are respectively arranged on two sides of a positive and negative rotation motor (12) on the reaction tank (2), a backflow feed opening (24) is arranged on the reaction tank (2) on two sides below the feed opening (22) and the liquid inlet (23), and the backflow feed opening (24) is communicated with a backflow feed delivery pump (7) through a pipeline.
4. The anaerobic digestion reaction device based on self-sustaining air-flotation screening as claimed in claim 1, wherein: temperature monitor (25) and PH value detector (26) are installed respectively to the both sides of retort (2), discharge gate (27) are installed to the lower extreme of retort (2).
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