CN210065301U

CN210065301U - Anaerobic reactor

Info

Publication number: CN210065301U
Application number: CN201920461112.5U
Authority: CN
Inventors: 朱立新; 李子富; 王德伟
Original assignee: Nanjing Riverside Resources And Ecology Research Institute Co Ltd
Current assignee: Nanjing Riverside Resources And Ecology Research Institute Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-02-14
Anticipated expiration: 2029-04-04

Abstract

The utility model discloses an anaerobic reactor, which relates to the field of anaerobic fermentation, and achieves the purpose of recycling sewage in a reactor repeatedly and improving the purification effect of sewage, and the key points of the technical proposal are that the anaerobic reactor comprises a reaction tank body, a feeding pipe which is arranged at the lower end of the reaction tank body and used for transmitting sewage, a feeding pipe which is arranged at the upper end of the reaction tank body and used for transmitting anaerobic bacteria, a first distributing pipe which is communicated with a discharge port of the feeding pipe and extends along the height direction of the reaction tank body, and a plurality of second distributing pipes which are arranged on the first distributing pipe and are communicated with each layer in the reaction tank body, wherein the lower end of the reaction tank body is provided with an emptying pipe, and the emptying; the reaction tank body is provided with a U-shaped return pipe communicated with the reaction tank body, two ends of the return pipe are both communicated with the middle layer liquid in the reaction tank body, and the return pipe is provided with a water pump; the upper end of the reaction tank body is provided with an exhaust pipe, and the exhaust pipe is provided with a purification device for purifying toxic gas in the exhaust pipe.

Description

Anaerobic reactor

Technical Field

The utility model relates to an anaerobic fermentation field, more specifically says, it relates to an anaerobic reactor.

Background

The organic solid waste produced in the rural scale breeding industry has the characteristics of quick fermentation and gas production, easy decomposition and stable gas production. The anaerobic fermentation method for treating the organic solid waste can recover clean energy, products obtained after methane is completely combusted are carbon dioxide and water, secondary pollution to the environment cannot be caused, and the fermentation product can be used as a soil conditioner or a high-quality organic fertilizer in agricultural application.

The reactor is used as a micro-ecological system for providing the growth and the propagation of microorganisms, is beneficial to the stable growth of various microorganisms, has high efficiency and smooth flow of substances and energy, and is a necessary condition for keeping the anaerobic treatment system to be continuously stable. In the design process of the treatment process for treating the organic solid waste by the anaerobic biological method, a reactor is a field which develops faster in the anaerobic fermentation process.

Chinese patent No. CN109401955A discloses a vertical multistage anaerobic reactor, which comprises a supporting structure, a tank structure, a stirring device, a heat preservation device, a plurality of pipelines and valves; the supporting structure is positioned on the ground and is used for bearing the weight of the whole reactor; the tank body structure is a vertical structure consisting of a plurality of anaerobic reactors and is positioned on the supporting structure; the stirring device is positioned in the tank body structure and is used for stirring and mixing uniformly to enable the microorganisms to be suspended and dispersed in the materials; the heat preservation device is positioned on the surface of the tank body structure and used for heating the tank body structure and keeping the temperature in the anaerobic reactor; each anaerobic reactor is communicated with the outside through a corresponding pipeline, and a valve is arranged on each pipeline.

However, if the sewage is not sufficiently reacted after passing through the anaerobic reactor, the sewage cannot be repeatedly reacted, so that the sewage cannot be thoroughly cleaned.

Disclosure of Invention

The utility model aims at providing an anaerobic reactor reaches the purpose with sewage at reactor inside recirculation, improves the purifying effect of sewage.

The above technical purpose of the present invention can be achieved by the following technical solutions: an anaerobic reactor comprises a reaction tank body, a feed pipe arranged at the lower end of the reaction tank body and used for conveying sewage, a feed pipe arranged at the upper end of the reaction tank body and used for conveying anaerobic bacteria, a first distributing pipe communicated with a discharge port of the feed pipe and extending along the height direction of the reaction tank body, and a plurality of second distributing pipes arranged on the first distributing pipe and communicated with all layers in the reaction tank body, wherein a first stop valve is arranged on each second distributing pipe;

the reaction tank body is provided with a U-shaped return pipe communicated with the reaction tank body, two ends of the return pipe are both communicated with the middle layer liquid in the reaction tank body, and the return pipe is provided with a water pump;

the upper end of the reaction tank body is provided with an exhaust pipe, and the exhaust pipe is provided with a purification device for purifying toxic gas in the exhaust pipe;

the reactor is characterized in that a stirring motor is arranged at the upper end of the reactor body, a stirring rod extending to the lower end of the reactor body is coaxially arranged on a rotating shaft of the stirring motor, and a plurality of stirring blades are arranged on the stirring rod.

Through adopting above-mentioned technical scheme, sewage gets into the retort internal portion from the inlet pipe, the conveying pipeline carries required anaerobe internal decomposing sewage to the retort, motor drive puddler rotates this moment, and then accelerate the interaction of anaerobe and sewage, accelerate the decomposition of pollutant in the sewage, along with going on of decomposition, sewage is internal at the retort and carries out natural layering, i.e. the bottom, intermediate level and upper strata, purify gradually from bottom to upper sewage, the intermediate level bottom is taken back to the sewage on intermediate level upper portion in the setting of back flow, make sewage decompose with the anaerobe once more, along with the increase of cycle number, the mobility of sewage is strengthened, sewage also increases with the interaction of anaerobe, the purifying effect of sewage has been improved, the waste gas discharge that the blast pipe produced with sewage purification in-process.

Preferably, the exhaust pipe is provided with a gas return pipe, one end of the gas return pipe, which is far away from the exhaust pipe, is communicated with upper liquid inside the reaction tank body, the gas return pipe is provided with a third stop valve, and one end of the gas return pipe, which is close to the reaction tank body, is provided with a one-way valve for limiting liquid in the reaction tank body to flow out of the gas return pipe.

Through adopting above-mentioned technical scheme, the muffler inputs waste gas again in the upper liquid, and the air current accelerates the flow of sewage upper strata, and the energy consumption is less moreover for sewage increases with anaerobe's interactive number of times, makes further purification of sewage.

Preferably, the exhaust pipe is connected with the purification device through a flange plate.

Through adopting above-mentioned technical scheme, purifier can change at any time as required for purifier and blast pipe are dismantled conveniently.

Preferably, a biological membrane which divides the reaction tank body into a bottom layer, a middle layer and an upper layer is arranged in the reaction tank body.

Through adopting above-mentioned technical scheme, if the pollutant that still does not decompose in making sewage keeps staying each in situ and decomposes in the setting up of biomembrane, wait to reach the condition that gets into the upper strata in sewage can permeate the biomembrane gets into upper liquid, the setting up of biomembrane makes each intraformational pollutant can fully decompose with the anaerobe contact.

Preferably, each stirring blade is provided with a connecting rope, and one end of the connecting rope, which is far away from the stirring blade, is provided with a stirring plate.

Through adopting above-mentioned technical scheme, when motor drive puddler rotated, the last connection rope of stirring vane moved to the direction of keeping away from the puddler under the effect of centrifugal force to rotate along with the rotation of puddler, the stirring board on the connection rope was at the sewage internal rotation along with the rotation of puddler this moment, had increased the stirring scope, and further improvement sewage and anaerobe's mutual number of times, do benefit to the decomposition of sewage and purify.

Preferably, the stirring plate is a plurality of moving rods which are connected in a cross mode, and the moving rods are criss-cross.

Through adopting above-mentioned technical scheme, the carriage release lever of each direction plays the stirring effect to sewage along with the pivoted in-process of puddler this moment, and the carriage release lever of each direction this moment to with the carriage release lever around each direction of sewage play the stirring effect, stirring effect is good.

Preferably, a flame arrester is arranged on the exhaust pipe.

Through adopting above-mentioned technical scheme, if there is combustible gas in the waste gas, the spark arrester is installed on the blast pipe this moment, can prevent the spark arrester that propagation flame passed through, improves the security performance of blast pipe.

Preferably, a transparent observation window is arranged at one end of the air return pipe close to the reaction tank body.

Through adopting above-mentioned technical scheme, the setting up convenient to use person of observation window observes return air duct in whether liquid gets into to and the flow condition of gas in the return air duct, if gas does not circulate in the return air duct in time close the third stop valve.

Preferably, the puddler is equipped with drive gear being close to retort body upper end outer wall, retort body upper wall rotate be connected with drive gear complex driven gear, the driven gear lower extreme is equipped with a plurality of movable poles that extend and get into retort body upper liquid, driven gear is located the puddler and keeps away from one side of muffler.

Through adopting above-mentioned technical scheme, drive driven gear through drive gear when the puddler rotates, the last moving rod of driven gear further improves sewage and anaerobe's interaction at upper liquid internal rotation this moment for anaerobe decomposes the pollutant in the sewage, sets up driven gear in the one side of keeping away from the muffler, is the flow of the sewage of keeping away from muffler one side for the acceleration.

Preferably, a spare gas pipe is arranged at the upper end of the reaction tank body, one end, far away from the reaction tank body, of the spare gas pipe is connected with a gas storage tank, a gas outlet of the gas storage tank is communicated with a gas return pipe through a connecting pipe, and fourth stop valves are arranged on the spare gas pipe and the communicating pipe.

Through adopting above-mentioned technical scheme, when the gaseous when the retort internal production is more, reserve trachea is stored in with unnecessary gas transport to the gas holder, and waste gas in the gas holder can let in the return air pipe and accelerate sewage and anaerobe's interaction, later is carried away by the blast pipe once more.

To sum up, the utility model discloses following beneficial effect has: the arrangement of the return pipe enables the sewage at the upper part of the middle layer to be pumped back to the bottom of the middle layer, so that the sewage and the anaerobic bacteria are decomposed again, the fluidity of the sewage is enhanced along with the increase of the circulation times, the interaction between the sewage and the anaerobic bacteria is increased, and the purification effect of the sewage is improved; the muffler inputs waste gas into upper liquid again, and the air current accelerates the upper-layer flow of sewage, and the energy consumption is less moreover for sewage and anaerobe's interactive number of times increases, makes further purification of sewage.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic structural diagram of the evacuation pipe according to the embodiment;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged schematic view of the portion B of FIG. 3;

FIG. 5 is a schematic structural view of a feed delivery pipe according to the present embodiment.

In the figure: 1. a reaction tank body; 11. a feed pipe; 12. a delivery pipe; 121. a first material dividing pipe; 122. a second material dividing pipe; 123. a first shut-off valve; 13. emptying the pipe; 131. a second stop valve; 14. a return pipe; 141. a water pump; 15. an exhaust pipe; 151. a purification device; 152. an air return pipe; 153. a third stop valve; 154. a one-way valve; 155. a flange plate; 156. a flame arrestor; 157. an observation window; 16. a stirring motor; 161. a stirring rod; 162. a stirring blade; 163. connecting ropes; 164. a travel bar; 165. a drive gear; 166. a driven gear; 167. a moving bar; 17. a biofilm; 18. a standby air pipe; 181. a gas storage tank; 182. a connecting pipe; 183. and a fourth stop valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

An anaerobic reactor, as shown in fig. 1 and 2, comprises a reaction tank body 1, a feeding pipe 11 arranged at the lower end of the reaction tank body 1 and used for conveying sewage, a conveying pipe 12 arranged at the upper end of the reaction tank body 1 and used for conveying anaerobic bacteria, a first material distribution pipe 121 communicated with a discharge hole of the conveying pipe 12 and extending along the height direction of the reaction tank body 1, and a plurality of second material distribution pipes 122 arranged on the first material distribution pipe 121 and communicated with all layers in the reaction tank body 1, wherein the reaction tank body 1 is a hollow cylindrical tank body, and a material pump can be added on the conveying pipe 12 in order to convey anaerobic bacteria to the discharge hole of the conveying pipe 12.

As shown in fig. 1 and 2, each second branch pipe 122 is provided with a first stop valve 123 for controlling anaerobic bacteria entering the reactor tank 1, the lower end of the reactor tank 1 is provided with an evacuation pipe 13, the evacuation pipe 13 is provided with a second stop valve 131, and the evacuation pipe 13 is provided for discharging all liquid in the reactor tank 1 and cleaning the tank. In addition or when only the same kind of anaerobic bacteria is required in the reaction tank 1, the feed delivery pipe 12 may be directly connected to the upper end of the reaction tank 1 as required (see FIG. 5).

Referring to fig. 1 and 3, sewage enters the inside of the reaction tank body 1 from the feeding pipe 11, the feeding pipe 12 conveys required anaerobic bacteria into the reaction tank body 1 to decompose the sewage, in order to accelerate decomposition, the upper end of the reaction tank body 1 is provided with the stirring motor 16, the rotating shaft of the stirring motor 16 is coaxially provided with a stirring rod 161 extending to the lower end of the reaction tank body 1, the stirring rod 161 is provided with a plurality of stirring blades 162, and along with decomposition, the sewage naturally stratifies in the reaction tank body 1, namely, the sewage from the bottom layer to the upper layer is gradually purified. However, the sewage cannot circulate in the reaction tank 1, and the decomposition of the sewage is insufficient.

As shown in fig. 1 and fig. 3, at this time, a U-shaped return pipe 14 communicated with the reactor tank 1 is arranged on the reactor tank 1, both ends of the return pipe 14 are in liquid communication with the middle layer inside the reactor tank 1, and a water pump 141 is arranged on the return pipe 14; the water pump 141 pumps the sewage on the upper portion of the middle layer back to the bottom of the middle layer, so that the sewage and the anaerobic bacteria are decomposed again, the mobility of the sewage is enhanced along with the increase of the circulation times, the interaction between the sewage and the anaerobic bacteria is increased, and the purification effect of the sewage is improved.

As shown in fig. 1 and fig. 3, after the sewage is purified by anaerobic bacteria, waste gas is generated, at this time, the upper end of the reaction tank body 1 is provided with an exhaust pipe 15, and the exhaust pipe 15 is provided with a purification device 151 for purifying toxic gas in the exhaust pipe 15; the purification device 151 reduces the emission of toxic substances generated in the sewage, and the purification device 151 may be an air purifier and/or a desulfurization device capable of regenerating for desulfurization treatment, and at this time, the desulfurization device may treat the exhaust gas such as sulfur dioxide by a sulfur-containing exhaust gas treatment method with the publication number CN 109351126A. In addition, the exhaust pipe 15 is connected with the purifying device 151 through the flange 155, and at this time, the purifying device 151 is detachably connected to the exhaust pipe 15, so that the purifying device 151 can be replaced by the purified exhaust gas as required. In addition, the fire arrester 156 is arranged on the exhaust pipe 15, and if combustible gas exists in the waste gas, the fire arrester 156 is arranged on the exhaust pipe 15, so that the fire arrester 156 capable of preventing flame from spreading can be prevented, and the safety performance of the exhaust pipe 15 is improved.

As shown in fig. 1 and fig. 3, in order to further increase the fluidity of the upper liquid in the reaction tank 1 and further facilitate the decomposition of the sewage, a gas return pipe 152 is arranged on the gas exhaust pipe 15, one end of the gas return pipe 152 far away from the gas exhaust pipe 15 is communicated with the upper liquid in the reaction tank 1, a third stop valve 153 is arranged on the gas return pipe 152, and one end of the gas return pipe 152 near the reaction tank 1 is provided with a one-way valve 154 for limiting the liquid in the reaction tank 1 to flow out of the gas return pipe 152; the third stop valve 153 controls the opening and closing of the air return pipe 152, when the third stop valve 153 opens the air return pipe 152, the one-way valve 154 controls the liquid in the reaction tank body 1 to flow into the air return pipe 152, at this time, except for one part of the exhaust gas in the exhaust pipe 15, the other part of the exhaust gas enters the air return pipe 152, the exhaust gas is re-input into the upper layer liquid through the air return pipe 152, the air flow accelerates the flow of the upper layer of the sewage, the energy consumption is low, the interaction times of the sewage and anaerobic bacteria are increased, and the sewage is further purified.

Referring to fig. 1 and 3, a transparent observation window 157 is disposed at one end of the air return pipe 152 near the retort 1, the observation window 157 extends to the retort 1 and the one-way valve 154, so that a user can observe whether liquid enters the air return pipe 152 and the flowing condition of gas in the air return pipe 152, and the third stop valve 153 is closed in time if the gas in the air return pipe 152 is not circulated.

As shown in figures 1 and 3, a biological membrane 17 which divides the reaction tank body 1 into a bottom layer, a middle layer and an upper layer is arranged in the reaction tank body 1, if undecomposed pollutants are continuously left in each layer for decomposition due to the arrangement of the biological membrane 17, the sewage can enter the upper layer liquid through the biological membrane 17 after reaching the condition of entering the upper layer, and the pollutants in each layer can be fully decomposed by contacting with anaerobic bacteria due to the arrangement of the biological membrane 17.

As shown in fig. 3 and 4, in order to increase the stirring range of the stirring blade 162, besides that the stirring rod 161 is located in each layer, the stirring blade 162 is further provided with a connecting rope 163, and one end of the connecting rope 163, which is far away from the stirring blade 162, is provided with a stirring plate, at this time, when the motor drives the stirring rod 161 to rotate, the connecting rope 163 on the stirring blade 162 moves in a direction far away from the stirring rod 161 under the effect of centrifugal force and rotates along with the rotation of the stirring rod 161, and at this time, the stirring plate on the connecting rope 163 rotates in the sewage along with the rotation of the stirring rod 161, so that the stirring range is increased, the interaction frequency of the sewage and anaerobic bacteria is further increased, and the decomposition and purification of the sewage are facilitated. Further when the stirring plate rotates, the distance from the stirring plate to the adjacent stirring blade 162 is greater than the length of the connecting rope 163, so that the two adjacent connecting ropes 163 are prevented from being intertwined.

Referring to fig. 3 and 4, the agitating plate is formed by a plurality of moving bars 164 which are cross-connected with each other, and the moving bars 164 are criss-cross. The carriage release lever 164 of each direction is along with the stirring rod 161 pivoted in-process to play the stirring effect to sewage, and the carriage release lever 164 of each direction this moment to with the carriage release lever 164 around each direction play the stirring effect, stirring effect is good, and the setting of each carriage release lever 164 has reduced the area of contact of stirring board with sewage when stirring the board rotation, and then has reduced the resistance when stirring the board rotation, be convenient for stir board stirring sewage.

As shown in fig. 3 and 4, in addition to the above solutions, a driving gear 165 may be disposed on the stirring rod 161 near the outer wall of the upper end of the reaction tank 1, a driven gear 166 engaged with the driving gear 165 is rotatably connected to the upper wall of the reaction tank 1, and a plurality of moving rods 167 extending into the upper liquid layer of the reaction tank 1 are disposed at the lower end of the driven gear 166. When the stirring rod 161 rotates, the driving gear 165 drives the driven gear 166 to rotate, and at the moment, the moving rod 167 on the driven gear 166 rotates in the upper layer liquid, so that the interaction between the sewage and the anaerobic bacteria is further improved, and the anaerobic bacteria decompose pollutants in the sewage; the driven gear 166 is located on the side of the stirring rod 161 away from the return air pipe 152 in order to accelerate the flow of the sewage on the side away from the return air pipe 152.

As shown in fig. 1, as the reaction continues, when the gas generated in the reaction tank 1 is more, the spare gas pipe 18 is provided at the upper end of the reaction tank 1, the end of the spare gas pipe 18 away from the reaction tank 1 is connected with the gas storage tank 181, the gas outlet of the gas storage tank 181 is communicated with the gas return pipe 152 through the connecting pipe 182, and the spare gas pipe 18 and the communicating pipe are both provided with the fourth stop valve 183. At this time, the spare air pipe 18 conveys the redundant air into the air storage tank 181 for storage, and the waste gas in the air storage tank 181 can be introduced into the air return pipe 152 to accelerate the interaction between the sewage and the anaerobic bacteria, and then conveyed out again by the exhaust pipe 15.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An anaerobic reactor is characterized in that: the anaerobic fermentation device comprises a reaction tank body (1), a feeding pipe (11) arranged at the lower end of the reaction tank body (1) and used for conveying sewage, a conveying pipe (12) arranged at the upper end of the reaction tank body (1) and used for conveying anaerobic bacteria, a first distributing pipe (121) communicated with a discharge hole of the conveying pipe (12) and extending along the height direction of the reaction tank body (1), and a plurality of second distributing pipes (122) arranged on the first distributing pipe (121) and communicated with each layer in the reaction tank body (1), wherein a first stop valve (123) is arranged on each second distributing pipe (122), a drain pipe (13) is arranged at the lower end of the reaction tank body (1), and a second stop valve (131) is arranged on the drain pipe (13);

the reaction tank body (1) is provided with a U-shaped return pipe (14) communicated with the reaction tank body (1), two ends of the return pipe (14) are both communicated with the middle layer liquid in the reaction tank body (1), and the return pipe (14) is provided with a water suction pump (141);

an exhaust pipe (15) is arranged at the upper end of the reaction tank body (1), and a purification device (151) for purifying toxic gas in the exhaust pipe (15) is arranged on the exhaust pipe (15);

the reactor is characterized in that a stirring motor (16) is arranged at the upper end of the reactor body (1), a stirring rod (161) extending to the lower end of the reactor body (1) is coaxially arranged on a rotating shaft of the stirring motor (16), and a plurality of stirring blades (162) are arranged on the stirring rod (161).

2. An anaerobic reactor according to claim 1, wherein: be equipped with muffler (152) on blast pipe (15), the one end and the inside upper liquid intercommunication of retort body (1) of blast pipe (15) are kept away from in muffler (152), be equipped with third stop valve (153) on muffler (152), muffler (152) are equipped with check valve (154) of restriction retort body (1) interior liquid outflow muffler (152) in the one end that is close to retort body (1).

3. An anaerobic reactor according to claim 1, wherein: the exhaust pipe (15) is connected with the purification device (151) through a flange plate (155).

4. An anaerobic reactor according to claim 1, wherein: the biological membrane (17) which divides the reaction tank body (1) into a bottom layer, a middle layer and an upper layer is arranged in the reaction tank body (1).

5. An anaerobic reactor according to claim 1, wherein: each stirring blade (162) is provided with a connecting rope (163), and one end of the connecting rope (163) far away from the stirring blade (162) is provided with a stirring plate.

6. An anaerobic reactor according to claim 5, wherein: the stirring plate is provided with a plurality of moving rods (164) which are connected in a cross mode, and the moving rods (164) are criss-cross.

7. An anaerobic reactor according to claim 1, wherein: and a flame arrester (156) is arranged on the exhaust pipe (15).

8. An anaerobic reactor according to claim 2, wherein: and a transparent observation window (157) is arranged at one end of the air return pipe (152) close to the reaction tank body (1).

9. An anaerobic reactor according to claim 2, wherein: puddler (161) is being equipped with drive gear (165) being close to retort body (1) upper end outer wall, retort body (1) upper wall rotates and is connected with driven gear (166) with drive gear (165) complex, driven gear (166) lower extreme is equipped with a plurality of movable poles (167) that extend into retort body (1) upper liquid, driven gear (166) are located puddler (161) and keep away from one side of muffler (152).

10. An anaerobic reactor according to claim 2, wherein: spare trachea (18) have been seted up to retort body (1) upper end, the one end that retort body (1) was kept away from in spare trachea (18) is connected with gas holder (181), the gas outlet of gas holder (181) passes through connecting pipe (182) and muffler (152) intercommunication, all be equipped with fourth stop valve (183) on spare trachea (18) and the communicating pipe.