CN221191846U - Anaerobic reactor - Google Patents

Abstract

The utility model relates to the technical field of environmental protection equipment water treatment, in particular to an anaerobic reactor. The utility model comprises a reaction tank body, an external circulation system and a plurality of water distributors; the external circulation system comprises a plurality of external circulation water intake pipes, a plurality of external circulation water intake pipes and an external circulation water outlet pipe, one end of each external circulation water intake pipe is arranged in the reaction tank in a penetrating way, the other end of each external circulation water intake pipe is connected with one end of the external circulation water intake pipe, the external circulation water intake pipe is used for collecting water extracted from the plurality of external circulation water intake pipes, the other end of the external circulation water intake pipe is provided with a plurality of water outlets which are connected with the plurality of external circulation water outlet pipes; the other ends of the outer circulation water outlet pipes are correspondingly communicated with the water distributors, and each water distributor is communicated with the outer circulation water outlet pipes. According to the external circulation water outlet pipe, water is distributed into the water distributors, mud and water are fully mixed and uniformly distributed through the water distributors, and dead zones on the surfaces of the water distributors can be avoided by the water distributors.

Description

Anaerobic reactor

Technical Field

The utility model relates to the technical field of environmental protection equipment water treatment, in particular to an anaerobic reactor.

Background

In the technical specification of wastewater treatment engineering of anaerobic granular sludge expanded bed reactor, a water distribution device of the anaerobic reactor is recommended to adopt a one-pipe porous water distribution mode and a multi-pipe water distribution mode, the recommended orifice flow rate is more than 2m/s, and the water distribution area of each water inlet of the multi-pipe water distribution is 2-4m ².

When high-concentration organic wastewater is treated in an anaerobic mode, the methane generation amount is large, so that the internal circulation stripping water amount is large, the internal circulation water inflow is large, most of water is taken from the lower part of the lower three-phase separator, the concentration is relatively low, and if the water directly flows back to the bottom of the anaerobic tank, the water quality at the bottom of the tank is uneven on a circular section, so that the treatment efficiency of the reactor is affected. Moreover, the uneven water volume at the bottom of the tank on the circular section can cause the partial deposition of the granular sludge or can not make the granular sludge in an expanded state.

For sewage which is not thoroughly removed by the pretreatment process on the impurities or suspended matters in the water, if porous water distribution is used, blockage, scaling and dead zones are easy to cause, and the multitube water distribution has a large quantity in a large-diameter anaerobic reactor and the uniformity of water distribution is not well controlled. Some water distributors used at present are easy to cause uneven mixing when water and mud are mixed, or granular mud is precipitated on the surface of the water distributor, and dead zones are also caused.

Disclosure of utility model

First, the technical problem to be solved

In view of the above-mentioned shortcomings and disadvantages of the prior art, the utility model provides an anaerobic reactor, which solves the technical problems that sludge-water mixing is uneven, granular sludge is precipitated on the surface of a water distributor, and dead zones are caused.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

The utility model provides an anaerobic reactor, which comprises a reaction tank body, an external circulation system and a plurality of water distributors; the external circulation system comprises a plurality of external circulation water intake pipes, a plurality of external circulation water intake pipes and a plurality of external circulation water outlet pipes, one end of each external circulation water intake pipe is arranged in the reaction tank in a penetrating way so as to extract water in the reaction tank, the other end of each external circulation water intake pipe is connected with one end of each external circulation water intake pipe, the plurality of external circulation water intake pipes are used for summarizing the water extracted from the plurality of external circulation water intake pipes, and the other end of each external circulation water intake pipe is provided with a plurality of water outlets which are connected with the plurality of external circulation water outlet pipes; the water distributors are arranged in the reaction tank body and are uniformly distributed at the bottom of the reaction tank body, the water distributors are umbrella-shaped, the other ends of the outer circulation water outlet pipes are correspondingly communicated with the water distributors, and each water distributor is communicated with the outer circulation water outlet pipes so that water of the outer circulation water inlet pipes collected by the outer circulation water inlet pipes is distributed into the water distributors through the outer circulation water outlet pipes.

Preferably, the water distributor comprises a plurality of reflecting plates and a central pipe; the plurality of reflecting plates are circumferentially arrayed around the axis of the central tube, water distribution ports are arranged on the upper surface of part of the reflecting plates, and a certain interval is reserved between every two water distribution ports; the lower surfaces of the reflecting plates and the bottom wall of the reaction tank body form an umbrella-shaped space, and the outer circulation water outlet pipes are connected with the water distribution ports so that water flow enters the umbrella-shaped space from the outer circulation water outlet pipes through the water distribution ports.

Preferably, the upper surface of each reflecting plate and the connecting end of the central tube form an included angle with the axis of the central tube on a horizontal plane, and a gap is formed between every two adjacent reflecting plates so as to release muddy water in the water distributor from the gap.

Preferably, the device also comprises an upper three-phase separator and a lower three-phase separator; the upper three-phase separator and the lower three-phase separator are arranged in the reaction tank body, the upper three-phase separator is positioned above the lower three-phase separator, and the upper three-phase separator and the lower three-phase separator divide the reaction tank body into a first cavity, a second cavity and a third cavity; the outer circulation water intake pipes are provided with two groups and are respectively positioned in the first cavity and the second cavity.

Preferably, the outer wall of the pipe section of the external circulation water intake pipe, which is positioned in the reaction tank body, is connected with a water intake branch pipe; the water intake branch pipe is provided with a plurality of water intake branch pipes which are symmetrically connected with two sides of the external circulation water intake pipe.

Preferably, an inclined plate is further installed in the reaction tank body, and the inclined plate is located in the third cavity.

Preferably, the device further comprises a dilution water inlet pipe, wherein the dilution water inlet pipe is connected with the external circulation water inlet pipe.

Preferably, the anaerobic reactor further comprises an internal circulation system; the internal circulation system is positioned in the reaction tank body and is used for separating mud from water in the reaction tank body and refluxing the water into a plurality of water distributors; the internal circulation system comprises a plurality of ascending pipes, descending pipes and a mud-water separator; the mud-water separator is positioned at the top of the reaction tank body, the plurality of ascending pipes are divided into two parts, one end of each ascending pipe is connected with the top of the lower three-phase separator, the other end of each ascending pipe is connected with the mud-water separator, and one end of each ascending pipe is connected with the top of the upper three-phase separator, and the other end of each ascending pipe is connected with the mud-water separator; one end of the down pipe is connected with the bottom of the mud-water separator, and the other end of the down pipe passes through the sloping plate, the upper three-phase separator and the lower three-phase separator to be communicated with the central pipe.

Preferably, a water separator is mounted on a portion of the down tube located within the first chamber.

Preferably, the device further comprises a mud pipe; the mud discharging pipe is arranged on the outer wall of the reaction tank body and is close to the bottom of the reaction tank body, and the mud discharging pipe is communicated with the reaction tank body and used for discharging residual mud in the reaction tank body.

(III) beneficial effects

The beneficial effects of the utility model are as follows:

1. According to the anaerobic reactor, the outer circulation water intake pipe, the plurality of outer circulation water outlet pipes, the plurality of outer circulation water inlet pipes and the water distributor are arranged, one end of the outer circulation water intake pipe penetrates through the outer wall of the reaction tank body and is connected to the inner wall of the reaction tank body, the plurality of water intake branch pipes are arranged on the outer wall of the outer circulation water intake pipe and can be used for extracting water in the reaction tank body, the other end of the outer circulation water intake pipe is connected with one end of the outer circulation water inlet pipe, the other end of the outer circulation water outlet pipe is communicated with the water distributor and can be used for pumping a mud-water mixture in the reaction tank body into the outer circulation water intake pipe, water collected in the outer circulation water intake pipe flows into the outer circulation water outlet pipe through the outer circulation water inlet pipe, and finally the outer circulation water outlet pipe distributes water into the water distributor. Through setting up a plurality of water distributors, can strengthen the mixture of water and mud, make water and mud mix ground more abundant, and then avoid causing the dead zone at the surface of water distributor. The utility model has simple structure and convenient and quick operation, and can avoid the phenomenon that sludge and water are unevenly mixed so as to cause dead zones.

2. The anaerobic reactor comprises a plurality of reflecting plates and a central tube, wherein the reflecting plates are circumferentially arrayed around the axis of the central tube, a plurality of outer circulation water outlet pipes are connected with water distribution ports on part of the reflecting plates and are communicated with umbrella-shaped spaces formed by the lower surfaces of the reflecting plates and the bottom wall of a reaction tank body, and water flow can circulate around the inner wall of the reflecting plates when the outer circulation water outlet pipes are discharged through the umbrella-shaped structures, so that full mixing between sludge and water is realized. The upper surface of each reflecting plate and the connecting end of the central tube are provided with an included angle with the axis of the central tube on the horizontal plane, and gaps are arranged between two adjacent reflecting plates, so that water flow can circulate along the inner wall of the reflecting plate, in the circulation process, mud-water mixture can be released from the gaps between the two adjacent reflecting plates, and then the mud-water mixture is mixed more uniformly, and meanwhile, the upper surface of the reflecting plate can be flushed, and the phenomenon that sludge adheres to the upper surface of the reflecting plate to cause dead zones is avoided.

3. According to the anaerobic reactor, the upper three-phase separator and the lower three-phase separator are arranged in the reaction tank body, so that the mixed mud and water can be separated, and the mud can be separated below the upper three-phase separator and the lower three-phase separator. The external circulation water intake pipe is provided with two groups, and the two groups of external circulation water intake pipes are respectively positioned below the upper three-phase separator and the lower three-phase separator so as to extract the mud-water mixture in the first cavity and the second cavity, thereby carrying out external circulation. Through set up a plurality of water intaking branch pipes on the outer wall of outer circulation water intake pipe to a plurality of water intaking branch pipes symmetrical connection are in the both sides of outer circulation water intake pipe, can carry out the multiple spot water intaking to the muddy water mixture in first cavity and the second cavity, avoid causing local short stream.

4. According to the anaerobic reactor, the inclined plate is arranged in the third cavity to form the inclined plate sedimentation area, so that further blocking of sludge can be realized, the problems of too high slit flow speed and poor separation effect of the upper three-phase separator and the lower three-phase separator caused by large height-diameter ratio of the anaerobic reactor are avoided, too large gas yield per unit area and serious anaerobic floatation and clamping can be avoided, and further serious sludge loss is caused, so that a subsequent biochemical system is influenced.

5. According to the anaerobic reactor, the dilution water inlet pipe is arranged, so that the corrosion effect of the PH of the water fed by the external circulation water inlet pipe on the reaction tank body can be diluted, the alkalinity in the anaerobic effluent is utilized, the alkali demand of the anaerobic reactor is reduced, and the concentration of each pollution index in the external circulation water inlet pipe is reduced through large-scale circulation.

6. According to the anaerobic reactor, through the arrangement of the plurality of ascending pipes, the descending pipes and the mud-water separator, the internal circulation system can be realized, namely mud water is extracted from the first cavity into the mud-water separator through the ascending pipes, mud water in the second cavity is extracted from the ascending pipes communicated with the second cavity into the mud-water separator, and then mud water in the mud-water separator reenters the water distributor through the descending pipes for internal circulation. A water separator is installed on a portion of the downcomer located within the first chamber to separate the incoming water and the return water.

7. According to the anaerobic reactor, the sludge discharge pipe is arranged on the outer wall of the reaction tank body, so that redundant sludge at the bottom of the reaction tank body can be discharged.

Drawings

FIG. 1 is a schematic cross-sectional view showing the overall structure of an anaerobic reactor according to the present utility model;

FIG. 2 is a schematic perspective view of a water distributor of an anaerobic reactor according to the present utility model;

FIG. 3 is a schematic distribution diagram of water intake branches on an external circulation water intake pipe of an anaerobic reactor according to the present utility model;

Fig. 4 is a schematic top view of the connection between the outer circulation outlet pipe and the water distributor of the anaerobic reactor according to the present utility model.

[ Reference numerals description ]

1: A reaction tank body; 11: a first cavity; 12: a second cavity; 13: a third cavity; 2: an external circulation system; 21: an external circulation water intake pipe; 22: an external circulation water inlet pipe; 23: an external circulation water outlet pipe; 24: a water intake branch pipe; 3: diluting the water inlet pipe; 4: a mud-water separator; 5: an internal circulation system; 51: a rising pipe; 52: a down pipe; 53: a water separator; 6: a mud pipe; 7: a water distributor; 71: a reflection plate; 72: a central tube; 73: a water distribution port; 8: a lower three-phase separator; 9: a three-phase separator is arranged; 10: and a sloping plate.

Detailed Description

In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

Example 1

As shown in fig. 1 to 4, an anaerobic reactor of the present embodiment includes a reaction tank 1, an internal circulation system 5, an external circulation system 2, and a water distributor 7. Wherein, the external circulation system 2 comprises a plurality of external circulation water intake pipes 21, a plurality of external circulation water intake pipes 22 and a plurality of external circulation water outlet pipes 23, one end of each external circulation water intake pipe 21 is arranged inside the reaction tank body 1 in a penetrating way, and water intake branch pipes 24 are connected on the outer wall of the pipe section of the external circulation water intake pipe 21, which is positioned inside the reaction tank body 1, so as to extract water in the reaction tank body 1. The other end of each outer circulation water intake pipe 21 is connected with one end of an outer circulation water intake pipe 22 for collecting water extracted from the plurality of outer circulation water intake pipes 21, the other end of the outer circulation water intake pipe 22 is provided with a plurality of water outlets, and the plurality of water outlets are connected with a plurality of outer circulation water outlet pipes 23. The water distributors 7 are arranged in a plurality, the water distributors 7 are arranged in the reaction tank 1 and are uniformly distributed at the bottom of the reaction tank 1, wherein the water distributors 7 are umbrella-shaped, water released from the external circulation water outlet pipe 23 has impulsive force, and water can form rotational flow in the water distributors 7, so that mud and water in the water distributors 7 are fully mixed, and mud-water mixing is more uniform and full. The other ends of the outer circulation water outlet pipes 23 are correspondingly communicated with the water distributors 7, and each water distributor 7 is communicated with the outer circulation water outlet pipes 23, so that water of the outer circulation water inlet pipes 21 summarized in the outer circulation water inlet pipes 22 is distributed into the water distributors 7 through the outer circulation water outlet pipes 23. The internal circulation system 5 is located inside the reaction tank 1, and is used for separating mud from water inside the reaction tank 1 and refluxing the water into the water distributors 7.

Specifically, a plurality of water dividing bags are connected between the plurality of outer circulation water inlet pipes 22 and the plurality of outer circulation water outlet pipes 23, one end of each water dividing bag is connected with the plurality of outer circulation water inlet pipes 22 to collect water in the plurality of outer circulation water inlet pipes 22, and the other end of each water dividing bag is connected with the plurality of outer circulation water outlet pipes 23, which can distribute the water collected from the outer circulation water inlet pipes 22 to the plurality of outer circulation water outlet pipes 23, so that the water in the outer circulation water outlet pipes 23 is evenly released, and meanwhile, the water has impulsive force. The water suction pumps are arranged on the plurality of outer circulation water inlet pipes 22, and the outer circulation water inlet pipes 22 can be used for pumping water through the water suction pumps, so that water in the reaction tank body 1 is pumped into the outer circulation water inlet pipes 21, and the water pumped into the outer circulation water inlet pipes 21 is collected and enters the outer circulation water inlet pipes 22, so that the water enters the water distributor 7 through the outer circulation water outlet pipes 23. Preferably, as shown in fig. 2, the water distributor 7 comprises a plurality of reflecting plates 71 and a central tube 72, the plurality of reflecting plates 71 are circumferentially arrayed around the axis of the central tube 72, water distribution ports 73 are arranged on the upper surface of part of the reflecting plates 71, a certain interval is arranged between every two water distribution ports 73, umbrella-shaped spaces are formed between the lower surfaces of the plurality of reflecting plates and the bottom wall of the reaction tank body 1, and a plurality of outer circulation water outlet pipes 23 are connected with the plurality of water distribution ports 73 so that water flows from the outer circulation water outlet pipes 23 enter the umbrella-shaped spaces through the water distribution ports 73; moreover, the upper surface of each reflecting plate 71 and the connecting end of the central tube 72 form an included angle with the axis of the central tube 72 on the horizontal plane, gaps are formed between every two adjacent reflecting plates 71, the two adjacent reflecting plates are connected and fixed through connecting columns, the reflecting plates 71 form an included angle with the central tube 72, gaps are formed between the two adjacent reflecting plates 71, water in the outer circulation water outlet pipe 23 enters into the umbrella-shaped space of the water distributor 7 to mix the water with mud in the water distributor 7, and because the water distributor 7 is umbrella-shaped, the water in the outer circulation water outlet pipe 23 has impulsive force when entering into the umbrella-shaped space of the water distributor 7, the water can circulate along the inner walls of the reflecting plates 71, so that the water and mud are fully mixed, the mixed mud is released into the reaction tank 1 through the gaps between the adjacent reflecting plates 71, and meanwhile the mud attached to the upper surface of the reflecting plates 71 can be washed away, so that the mud is prevented from being adhered to the upper surface of the reflecting plates 71, and dead zone is caused.

Further, as shown in fig. 1, an upper three-phase separator 9 and a lower three-phase separator 8 are also installed inside the reaction tank 1, the upper three-phase separator 9 is located above the lower three-phase separator 8, and the upper three-phase separator 9 and the lower three-phase separator 8 divide the reaction tank 1 into a first cavity 11, a second cavity 12 and a third cavity 13, wherein two external circulation water intake pipes 21 are provided, one is located below the upper three-phase separator 9, one is located below the lower three-phase separator 8, namely, one is located in the first cavity 11, and one is located in the second cavity 12; as shown in fig. 3, a plurality of water intake branch pipes 24 connected with the external circulation water intake pipe 21 are provided, and the plurality of water intake branch pipes 24 are symmetrically connected at two sides of the external circulation water intake pipe 21, so that when the water pump pumps water in the first cavity 11 and the second cavity 12, the plurality of water intake branch pipes 24 can achieve multi-point water intake, and local short flow is avoided. The inclined plate 10 is further arranged in the third cavity 13, and the inclined plate 10 is arranged, so that the third cavity 13 forms an inclined plate 10 sedimentation area, sludge can be further blocked, the problems that the slit flow speed of the upper three-phase separator 9 and the slit flow speed of the lower three-phase separator 8 are too high and the separation effect is poor due to the fact that the height-diameter ratio of the anaerobic reactor is large are avoided, meanwhile, the gas yield per unit area is too large, anaerobic floating and wrapping are serious, the sludge loss is serious, and the subsequent biochemical system is influenced are avoided.

Still further, an anaerobic reactor according to this embodiment further includes a dilution water inlet pipe 3 connected to the outer circulation water inlet pipe 22, which can dilute the corrosion of the PH of the water fed from the outer circulation water inlet pipe 22 to the reaction tank 1, and reduce the alkali demand of the anaerobic reactor by utilizing the alkalinity in the anaerobic effluent, and reduce the concentration of each pollution index in the outer circulation water inlet pipe 22 by large-scale circulation.

The internal circulation system 5 includes a plurality of risers 51, downcomers 52 and a mud-water separator 4. Wherein the mud-water separator 4 is positioned at the top of the reaction tank 1, the plurality of ascending pipes 51 are divided into two parts, one end of one part of the ascending pipes 51 is connected with the top of the lower three-phase separator 8, the other end of the ascending pipes is connected with the mud-water separator 4, one end of the other part of the ascending pipes 51 is connected with the top of the upper three-phase separator 9, and the other end of the other part of the ascending pipes is connected with the mud-water separator 4; one end of the down pipe 52 is connected with the bottom of the mud-water separator 4, the other end of the down pipe 52 passes through the inclined plate 10, the upper three-phase separator 9 and the lower three-phase separator 8 to be communicated with the central pipe 72, and a water separator 53 is arranged on the part of the down pipe 52 positioned in the first cavity 11 and can separate water in the down pipe 52, so that the water in the down pipe 52 can be uniformly distributed into the water distributor 7.

The outer wall of the reaction tank body 1 is provided with a sludge discharge pipe 6 which is close to the bottom of the reaction tank body 1, and the sludge discharge pipe 6 is communicated with the reaction tank body 1, so that residual sludge in the reaction tank body 1 can be discharged, and the sludge is prevented from being accumulated at the bottom of the reaction tank body 1.

The anaerobic reactor of the embodiment has the following advantages through the above structure:

1. According to the anaerobic reactor of the embodiment, by arranging the outer circulation water intake pipe 21, the plurality of outer circulation water outlet pipes 23, the outer circulation water inlet pipe 22 and the water distributor 7, one end of the outer circulation water intake pipe 21 penetrates through the outer wall of the reaction tank body 1 and is connected to the inner wall of the reaction tank body 1, the outer wall of the outer circulation water intake pipe 21 is provided with the plurality of water intake branch pipes 24 which can draw water in the reaction tank body 1, the other end of the outer circulation water intake pipe 21 is connected with one end of the outer circulation water inlet pipe 22, the other end of the outer circulation water inlet pipe 22 is connected with the outer circulation water outlet pipe 23, the other end of the outer circulation water outlet pipe 23 is communicated with the water distributor 7, the mud water mixture in the reaction tank body 1 can be pumped into the outer circulation water intake pipe 21, then the collected water in the outer circulation water outlet pipe 21 flows into the outer circulation water outlet pipe 23 through the outer circulation water inlet pipe 22, and finally the water is distributed into the water distributor 7 through the outer circulation water outlet pipe 23, and the water distributor 7 has an umbrella shape due to the water released from the outer circulation water outlet pipe 23 so as to enable the mud in the water distributor 7 to be mixed with water evenly; through setting up a plurality of water distributors 7, can strengthen the mixture of water and mud, make water and mud mix ground more abundant, and then avoid causing the dead zone at the surface of water distributor 7. The utility model has simple structure and convenient and quick operation, and can avoid the phenomenon that sludge and water are unevenly mixed so as to cause dead zones.

2. According to the anaerobic reactor of the embodiment, the water distributor 7 comprises the plurality of reflecting plates 71 and the central tube 72, the plurality of reflecting plates 71 are circumferentially arrayed around the axis of the central tube 72, the plurality of outer circulation water outlet pipes 23 are connected with the water distribution ports 73 on the partial reflecting plates 71 and are communicated with umbrella-shaped spaces formed by the lower surfaces of the plurality of reflecting plates 71 and the bottom wall of the reaction tank body 1, and water flow can circulate around the inner wall of the reflecting plates 71 during water outlet of the outer circulation water outlet pipes 23 through the umbrella-shaped structure, so that full mixing between sludge and water is realized. The upper surface of each reflecting plate 71 and the connecting end of the central tube 72 are provided with an included angle with the axis of the central tube 72 on the horizontal plane, and a gap is formed between two adjacent reflecting plates 71, so that water flows not only circulate along the inner wall of the reflecting plate 71, but also in the circulation process, mud-water mixture can be released from the gap between the two adjacent reflecting plates 71, so that the mud-water mixture is more uniformly mixed, and the upper surface of the reflecting plate 71 can be flushed, and the phenomenon that mud adheres to the upper surface of the reflecting plate 71 to cause dead zones is avoided.

3. According to the anaerobic reactor of the embodiment, the upper three-phase separator 9 and the lower three-phase separator 8 are arranged in the reaction tank body 1, so that the mixed mud and water can be separated by blocking, and the mud can be blocked below the upper three-phase separator 9 and the lower three-phase separator 8. The two external circulation water intake pipes 21 are provided, and the two external circulation water intake pipes 21 are respectively positioned below the upper three-phase separator 9 and the lower three-phase separator 8 to extract the mud-water mixture in the first cavity 11 and the second cavity 12 for external circulation. Through set up a plurality of water intaking branch pipes 24 on the outer wall of outer circulation intake pipe 21 to a plurality of water intaking branch pipes 24 and outer circulation intake pipe 21 symmetrical connection are in the both sides of outer circulation intake pipe 21, can carry out the multiple spot water intaking to the muddy water mixture in first cavity 11 and the second cavity 12, avoid causing local short stream.

4. In the anaerobic reactor of the present embodiment, by providing a plurality of rising pipes 51, a falling pipe 52 and a mud-water separator 4, the internal circulation system 5 can be implemented, that is, mud water is pumped from the first cavity 11 into the mud-water separator 4 by the rising pipe 51, mud water in the second cavity 12 is pumped into the mud-water separator 4 by the rising pipe 51 communicating with the second cavity 12, and mud water in the mud-water separator 4 is then re-pumped into the water distributor 7 by the falling pipe 52 for internal circulation. A water separator 53 is installed on a portion of the down pipe 52 located in the first chamber 11 to separate inflow water and return water.

The working principle of the embodiment is as follows:

as shown in fig. 1 to 3, the present apparatus is assembled first, sludge is deposited at the bottom of the reaction tank 1, water is injected into the reaction tank 1 to partially mix the water with the sludge at the bottom of the reaction tank 1, the external circulation water intake pipe 21 located under the first and second chambers 11 and 12 extracts water through the water intake pump, since the external circulation water intake pipe 21 is symmetrically connected with the plurality of water intake branch pipes 24 at both sides thereof, which can take water at multiple points in the first and second chambers 11 and 12, the water extracted from the external circulation water intake pipe 21 is collected through the external circulation water intake pipe 22, and at the same time, the dilution water intake pipe 3 pumps water with high concentration into the external circulation water intake pipe 22, The diluted water flows into a water diversion packet through an outer circulation water inlet pipe 22 to uniformly distribute the water in the outer circulation water inlet pipe 22 in a plurality of outer circulation water outlet pipes 23, when the water enters an umbrella-shaped space of the water distributor 7 from the outer circulation water outlet pipe 23 through a water distribution port 73 due to the impulsive force of the water, the water can be mixed with sludge, and the mixed muddy water circulates in the umbrella-shaped space of the water distributor 7 through an umbrella-shaped structure of the water distributor 7, so that the sludge and the water are fully mixed; Because the water distributor 7 is composed of a plurality of reflecting plates 71 and a central tube 72, and gaps are formed among the reflecting plates 71, the mixed muddy water is released from the gaps into the first cavity 11 in the circulation process, and meanwhile, the water can wash the upper surface of the reflecting plates 71; Along with the increase of the mud water, the lower three-phase separator 8 performs first blocking on the unmixed mud water, part of the mixed mud water enters the mud-water separator 4 through the ascending pipe 51 connected with the lower three-phase separator 8, then the mud water which fails to enter the ascending pipe 51 passes through the lower three-phase separator 8 to enter the second cavity 12, the upper three-phase separator 9 performs second blocking on the unmixed mud water, meanwhile, the ascending pipe 51 connected with the upper three-phase separator 9 sucks part of the mud water in the second cavity 12 to enter the mud-water separator 4, the mud-water separator 4 performs mud-water separation on the mud water sucked by the two ascending pipes 51, and the separated water enters the water separator 53 through the descending pipe 52, The water separator 53 then delivers water into each central tube 72 (this is the internal circulation system 5) by uniform water separation. As the mud water increases gradually and the water level rises gradually, mud water which cannot enter the rising pipe 51 (at this time, a small part of mud water mixture is blocked by the upper three-phase separator 9 and the lower three-phase separator 8) passes through the upper three-phase separator 9 and enters the third cavity 13, the mud is blocked for the third time through the sloping plate 10, at this time, most of the mud is blocked, the outer circulation water intake pipe 21 sucks water in the first cavity 11 and the second cavity 12 through a plurality of water intake straight pipes, the water is collected in the outer circulation water intake pipe 22, then the water enters the water distributor 7 through the outer circulation water outlet pipe 23, the water is mixed with the mud (at this time, the outer circulation system 2), sludge which is not mixed with water is accumulated at the bottom of the inside of the reaction tank 1 or sludge accumulated at the end of the operation of the reactor is discharged through the sludge discharge pipe 6.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.

Claims (10)

1. An anaerobic reactor comprises a reaction tank body and an external circulation system, and is characterized by further comprising a plurality of water distributors;

The external circulation system comprises a plurality of external circulation water intake pipes, a plurality of external circulation water intake pipes and a plurality of external circulation water outlet pipes, one end of each external circulation water intake pipe is arranged in the reaction tank in a penetrating way so as to extract water in the reaction tank, the other end of each external circulation water intake pipe is connected with one end of each external circulation water intake pipe, the plurality of external circulation water intake pipes are used for summarizing the water extracted from the plurality of external circulation water intake pipes, and the other end of each external circulation water intake pipe is provided with a plurality of water outlets which are connected with the plurality of external circulation water outlet pipes;

The water distributors are arranged in the reaction tank body and are uniformly distributed at the bottom of the reaction tank body, the water distributors are umbrella-shaped, the other ends of the outer circulation water outlet pipes are correspondingly communicated with the water distributors, and each water distributor is communicated with the outer circulation water outlet pipes so that water of the outer circulation water inlet pipes collected by the outer circulation water inlet pipes is distributed into the water distributors through the outer circulation water outlet pipes.

2. An anaerobic reactor according to claim 1, wherein:

The water distributor comprises a plurality of reflecting plates and a central tube;

The plurality of reflecting plates are circumferentially arrayed around the axis of the central tube, water distribution ports are arranged on the upper surface of part of the reflecting plates, and a certain interval is reserved between every two water distribution ports;

The lower surfaces of the reflecting plates and the bottom wall of the reaction tank body form an umbrella-shaped space, and the outer circulation water outlet pipes are connected with the water distribution ports so that water flow enters the umbrella-shaped space from the outer circulation water outlet pipes through the water distribution ports.

3. An anaerobic reactor according to claim 2, wherein:

The upper surface of each reflecting plate and the connecting end of the central tube form an included angle with the axis of the central tube on the horizontal plane, and a gap is formed between every two adjacent reflecting plates so as to release muddy water in the water distributor from the gap.

4. An anaerobic reactor according to claim 3, wherein:

the device also comprises an upper three-phase separator and a lower three-phase separator;

The upper three-phase separator and the lower three-phase separator are arranged in the reaction tank body, the upper three-phase separator is positioned above the lower three-phase separator, and the upper three-phase separator and the lower three-phase separator divide the reaction tank body into a first cavity, a second cavity and a third cavity;

The outer circulation water intake pipes are provided with two groups and are respectively positioned in the first cavity and the second cavity.

5. An anaerobic reactor according to claim 4, wherein:

The outer wall of the pipe section of the external circulation water intake pipe, which is positioned in the reaction tank body, is connected with a water intake branch pipe;

The water intake branch pipe is provided with a plurality of water intake branch pipes which are symmetrically connected with two sides of the external circulation water intake pipe.

6. An anaerobic reactor according to claim 4, wherein:

And an inclined plate is further arranged in the reaction tank body, and the inclined plate is positioned in the third cavity.

7. An anaerobic reactor according to claim 1, wherein:

The device also comprises a dilution water inlet pipe, wherein the dilution water inlet pipe is connected with the external circulation water inlet pipe.

8. An anaerobic reactor according to claim 6, wherein:

the anaerobic reactor also comprises an internal circulation system;

The internal circulation system is positioned in the reaction tank body and is used for separating mud from water in the reaction tank body and refluxing the water into a plurality of water distributors;

the internal circulation system comprises a plurality of ascending pipes, descending pipes and a mud-water separator;

The mud-water separator is positioned at the top of the reaction tank body, the plurality of ascending pipes are divided into two parts, one end of each ascending pipe is connected with the top of the lower three-phase separator, the other end of each ascending pipe is connected with the mud-water separator, and one end of each ascending pipe is connected with the top of the upper three-phase separator, and the other end of each ascending pipe is connected with the mud-water separator;

One end of the down pipe is connected with the bottom of the mud-water separator, and the other end of the down pipe passes through the sloping plate, the upper three-phase separator and the lower three-phase separator to be communicated with the central pipe.

9. An anaerobic reactor according to claim 8, wherein:

A water separator is mounted on a portion of the downcomer within the first chamber.

10. An anaerobic reactor according to claim 1, wherein:

The device also comprises a mud pipe;

The mud discharging pipe is arranged on the outer wall of the reaction tank body and is close to the bottom of the reaction tank body, and the mud discharging pipe is communicated with the reaction tank body and used for discharging residual mud in the reaction tank body.