MCARP anaerobic reactor

Abstract

The utility model provides an MCARP anaerobic reactor. An independent closed separation module is innovatively arranged in a water outlet area in the reactor. And the water body subjected to anaerobic treatment in the lower reaction area is uniformly distributed to the separation plate group through the central flow guide pipe, so that efficient separation of biogas and sludge is realized. And the separated sludge settles and gathers in a sludge collection area below the separation plate group, and flows back to a lower reaction area together with reflux water through a sludge suction pipe to participate in an anaerobic reaction, so that the cyclic utilization of the sludge is realized. According to the MCARP anaerobic reactor, anaerobic treatment and solid-liquid-gas separation functions are integrated in a single reactor, and the separation process can be completed only by adopting one independent separation module. Compared with the scheme that a multi-stage three-phase separation device needs to be arranged in the prior art, according to the design, the equipment structure is simplified, the manufacturing cost is reduced, and meanwhile, the sludge separation efficiency is also remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wastewater treatment technical field, concretely relates to a MCARP anaerobic reactor. BACKGROUND

[0002] In the current anaerobic treatment technical field used in wastewater treatment, the current commonly used anaerobic reactor faces some problems: first, the structural design of many reactors is too complex, and is equipped with an independent anaerobic sludge separation and reflux system, which not only occupies a large space, but also is relatively difficult to operate. Second, although the structural design of some reactors is relatively simple, only an internal three-phase separation device is built-in to realize the separation of biogas, sludge and water, but such simplified design often cannot meet the performance requirements, and after a period of operation, the effluent will carry sludge. More complex situation is that some reactors are internally provided with multi-stage phase separation devices, for example, the sludge separation two-stage treatment anaerobic reactor described in the C patent N205820983U, although such multi-stage separation design improves the sludge separation effect to some extent, but at the same time, it reduces the height of the sludge bed in the reactor, thereby affecting the effect of anaerobic treatment. In addition, the introduction of multi-stage separation unit also increases the complexity of the entire device. SUMMARY

[0003] In view of the problems of complex structural design, large floor area and poor sludge separation effect of the existing anaerobic reactor, the utility model provides a MCARP anaerobic reactor, which is provided with an independent and closed separation module in the effluent area inside the reactor, and the water body treated by the anaerobic treatment of the lower reaction area flows into the separation plate group under the guidance of the center flow guide pipe, and the effective separation of biogas and sludge is completed. The separated sludge naturally settles in the sludge collection area below the separation plate group, and is extracted by the sludge suction pipe and returned to the lower reaction area together with the reflux water to continue to participate in the anaerobic treatment, realizing the recycling of sludge resources. The MCARP anaerobic reactor integrates the functions of anaerobic treatment and sludge separation in the same reactor, and only one independent separation module is used in the sludge separation process, compared with the practice of setting multi-stage three-phase separation devices in the reactor in the prior art, this design not only simplifies the equipment structure, but also significantly improves the sludge separation efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] The MCARP anaerobic reactor comprises: a water outlet section and a reaction section arranged in an upper layer and a lower layer respectively, a separation module is arranged in the water outlet section, and a sludge expanded bed is arranged in the reaction section; the separation module comprises a plurality of water outlet branches, a central flow guide pipe, a separation plate group arranged around the central flow guide pipe, and a sludge collection area; the water outlet branch comprises a vertical section and a horizontal section, the opening of the vertical section is directed to the top of the water outlet section, and the horizontal section is in communication with the inlet of the central flow guide pipe and used for conveying water in the water outlet section to the central flow guide pipe; the central flow guide pipe is used for guiding water to the separation plate group for separation of sludge and biogas; and the sludge collection area is arranged below the separation plate group and used for collecting sludge particles falling through the interspaces of the separation plate group.

[0006] In some embodiments, the separation module further comprises: a water outlet pipe arranged at a position close to the top of the water outlet section and vertically higher than the top of the vertical section; a plurality of water outlet holes with upward openings are arranged on the water outlet pipe, and the water outlet pipe is in communication with the vertical section.

[0007] In some embodiments, the separation plate group comprises: a first plate group and a second plate group, the first plate group is arranged around the periphery of the central flow guide pipe, and the second plate group is arranged around the periphery of the first plate group; the first plate group and the second plate group are both composed of a plurality of inclined plates arranged at intervals, and the interspaces between adjacent inclined plates are used for sludge falling.

[0008] In some embodiments, the interval between the inclined plates of the first plate group is greater than the interval between the inclined plates of the second plate group; and / or, the inclined plates of the first plate group and the second plate group have the same inclination angle.

[0009] In some embodiments, the MCARP anaerobic reactor further comprises: a water outlet tank and a drain pipe, the water outlet tank is arranged on the side wall of the periphery of the second plate group, and the top of the side wall of the periphery of the second plate group and the water outlet tank are both vertically higher than the inclined plates; the drain pipe is in communication with the water outlet tank to drain purified water.

[0010] In some embodiments, the MCARP anaerobic reactor further comprises: a water distribution pipe and an inlet pipe, the water distribution pipe is arranged at the bottom of the reaction section, a plurality of water distribution holes are arranged on the water distribution pipe; the inlet pipe is in communication with the inlet of the water distribution pipe, and an anaerobic water inlet pump is arranged on the inlet pipe.

[0011] In some embodiments, the separation module further comprises a suction pipe, the MCARP anaerobic reactor further comprises a reflux pipe, the suction pipe is in communication with the sludge collection area, and a plurality of suction holes are arranged on the suction pipe; one end of the reflux pipe is in communication with the water outlet section and the suction pipe, and the other end of the reflux pipe is in communication with the water inlet pipe; and a variable frequency circulating water pump is arranged on the reflux pipe.

[0012] In some embodiments, the MCARP anaerobic reactor further comprises a flushing pipe, a high-pressure flushing pump and a flushing automatic valve; the flushing pipe is in communication with the suction pipe; and the high-pressure flushing pump and the flushing automatic valve are arranged on the flushing pipe and are automatically started and stopped according to a preset program to perform a regular flushing operation of the suction pipe.

[0013] In some embodiments, the MCARP anaerobic reactor further comprises a biogas pipe in communication with the top of the water outlet section for collecting and discharging biogas separated by the separation plate set; and / or the sludge collection area is in the shape of a cone.

[0014] In some embodiments, the water outlet pipe is annular.

[0015] Compared with the prior art, the MCARP anaerobic reactor has the following beneficial effects:

[0016] 1. The MCARP anaerobic reactor provided by the utility model is provided with a special solid-liquid-gas separation module in the water outlet area, water bodies treated by efficient anaerobic treatment in the reaction area flow into the central guide pipe through the water outlet branch pipe, under the guidance of the central guide pipe, the water bodies enter the separation plate set for solid-liquid-gas separation, the purified water after separation is smoothly discharged from the reactor, the separated sludge falls into the sludge collection area at the bottom of the separation plate set and is refluxed to the lower reaction area together with the reflux water through the suction pipe to continue to participate in anaerobic reaction, realizing efficient recycling of the sludge. The MCARP anaerobic reactor integrates the two links of anaerobic reaction and sludge separation in the same reactor, not only greatly saves the occupied area, but also makes the treatment process more efficient and smooth;

[0017] 2. Unlike the three-phase separation device used in the prior art sludge separation, the utility model adopts the independent closed separation module. The three-phase separator in the prior art needs water to enter from the bottom, and the treatment effect is easily affected by sludge. For example, when a large amount of sludge enters from the bottom carried by the upward water flow, the sludge may directly pass through the separator with the water flow, resulting in a decrease in separation efficiency. This is because the design of the existing three-phase separator is usually based on the difference in specific gravity to realize solid-liquid separation, and the influx of a large amount of sludge may interfere with this process. The separation module of the utility model avoids the situation that the sludge in the reaction zone enters from the bottom with water, ensures the complete separation function of the separation module, and the separation effect is no longer disturbed by the sludge, realizing a more accurate and efficient solid-liquid separation process.

[0018] 3. Compared with the prior art that adopts a multistage three-phase separation device to improve the sludge-water separation effect, the utility model only sets a single independent separation module on the upper part of the reactor. This design enables the lower reaction zone to maintain a higher sludge bed, increases the sludge retention amount, thereby significantly improving the overall treatment capacity of the reactor, and simplifies the internal structure of the reactor, reducing the maintenance cost.

[0019] 4. The separation plate set of the utility model adopts a two-stage separation design, including a first plate set and a second plate set. The central flow guide pipe uniformly disperses the water body to the first plate set. Similar to the principle of a radial flow sedimentation tank, the water body is preliminarily separated into gas, liquid and solid at the first plate set. Then the water body enters the second plate set for deep separation, ensuring complete separation of residual biogas and sludge.

[0020] 5. In the sludge collection area, the sludge is sucked into the sludge suction pipe through the suction hole. On the reflux pipeline, the frequency conversion circulating water pump plays its role, and the sludge and part of the water in the water outlet area are retransported to the reaction zone to continue to participate in the anaerobic treatment process. This enhanced circulation system not only ensures the stability of the water quality, but also effectively prevents the separation module from being blocked due to sludge deposition, ensuring the continuity and efficiency of the entire treatment process.

[0021] 6. The utility model also provides a flushing device for the sludge suction pipe, which includes a flushing pipe, a high-pressure flushing pump and a flushing automatic control valve. The sludge suction pipe can be periodically opened for flushing operation according to the preset program: close the water inlet and reflux, and use high-pressure clean water to flush the sludge suction pipe and the sludge suction holes on it. This design effectively prevents the blockage of the sludge suction pipe and the sludge suction holes, ensures the long-term stable operation of the separation module, and reduces the system maintenance requirements. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described below in combination with the drawings and examples.

[0023] Figure 1 The utility model provides the structure schematic diagram of MCARP anaerobic reactor.

[0024] Figure 2 A structure schematic view of the separation module is provided in the utility model.

[0025] Figure 3 A top view of the separation module is provided in the utility model.

[0026] Figure 4 A top view of the water outlet pipe is provided in the utility model.

[0027] Figure 5 A structure schematic view of the water distribution pipe is provided in the utility model.

[0028] Reference signs

[0029] 1 - closed tank top, 2 - water outlet branch pipe, 3 - central flow guide pipe, 4 - first plate group, 5 - second plate group, 6 - inclined plate, 7 - sludge collection area, 8 - sludge, 9 - slope, 10 - water outlet pipe, 11 - water outlet hole, 12 - water outlet groove, 13 - drain pipe, 14 - sludge suction pipe, 15 - sludge suction hole, 16 - backflow pipe, 17 - variable frequency circulating water pump, 18 - water distribution pipe, 19 - water inlet pipe, 20 - anaerobic water inlet pump, 21 - sludge expanded bed, 22 - flushing pipe, 23 - high-pressure flushing pump, 24 - flushing automatic control valve, 25 - biogas pipe. DETAILED DESCRIPTION

[0030] The utility model is further explained in detail below in combination with the description of the drawings and specific embodiments, but the following description including the embodiments is only used for enabling the ordinary skilled in the art to which the utility model belongs to understand the principle and essence of the utility model more clearly, and does not mean to limit the utility model in any form.

[0031] The utility model provides a kind of MCARP anaerobic reactor, the inside of the MCARP anaerobic reactor includes: being arranged in upper layer water outlet section and lower layer reaction section, separation module is equipped in water outlet section, sludge expanded bed 21 is equipped in reaction section, water outlet pipe 10 top is the closed tank top 1 of reactor.

[0032] The separation module includes several water outlet branch pipes 2, central flow guide pipes 3, separation plate group arranged around the central flow guide pipe 3, sludge collection area 7, and specifically:

[0033] As Figure 1As shown, the water outlet branch pipe 2 comprises a vertical section and a horizontal section, the horizontal section is communicated with the inlet of the central flow guide pipe 3, and the opening of the vertical section is directed to the top of the water outlet section. The water body treated by the sludge 8 expanded bed in the reaction zone rises to the water outlet section, and then rises to the opening of the top of the vertical section. After entering the vertical section through the opening, the water body flows into the central flow guide pipe 3 through the horizontal section, and then is guided by the central flow guide pipe 3 to the sludge 8 and biogas separation device. The vertical section of the water outlet branch pipe 2 helps to intercept and precipitate some larger impurities, so as to prevent them from entering the horizontal section and the sludge 8 separation device. The opening of the vertical section is flush with the water outlet tank 12 in the vertical direction, or slightly higher than the water outlet tank 12, so as to ensure the smooth water outlet.

[0034] Preferably, in the vertical direction, the top opening of the central flow guide pipe 3 is a certain distance from the top of the separation plate group, and the water body flows over (overflow downward) into the separation plate group from the top opening of the central flow guide pipe 3.

[0035] A sludge collection area 7 is arranged below the separation plate group, for collecting the sludge 8 particles falling through the gaps of the separation plate group. Preferably, the sludge collection area 7 is in the shape of a hopper, and the falling sludge 8 slides into the sludge suction hole 15 through the slope 9.

[0036] Further, the MCARP anaerobic reactor is also provided with a biogas pipe 25 communicated with the top of the water outlet section, for collecting and discharging the biogas separated by the separation plate group.

[0037] Further, the separation module further comprises a water outlet pipe 10, as shown in Figure 1 , Figure 2 and Figure 4 The water outlet pipe 10 is arranged at a position close to the top of the water outlet section, and is higher than the top of the vertical section in the vertical direction.

[0038] The water outlet pipe 10 is arranged at a position close to the top of the water outlet section, and is higher than the vertical section of the water outlet branch pipe 2 in the vertical direction. The water outlet pipe 10 is provided with a plurality of water outlet holes 11 with upward openings, and the bottom of the water outlet pipe 10 is communicated with the vertical section of each water outlet branch pipe 2. The water body in the water outlet section flows into the water outlet pipe 10 through the water outlet holes 11, and then flows into the central flow guide pipe 3 through the vertical section and the horizontal section.

[0039] Preferably, as shown in Figure 4 The shape of the water outlet pipe 10 is annular, and the water outlet pipe 10 is coaxially arranged with the anaerobic reactor.

[0040] More preferably, the height of the water outlet holes 11 on the annular water outlet pipe 10 is slightly lower than the height of the water outlet tank 12. The height difference ensures the uniformity of the water outlet, effectively avoids the formation of dead zones on the top liquid surface, and prevents the accumulation of sludge 8 in the system. In addition, this design can also ensure that there is no large amount of flocculation in the water outlet, so that the whole water outlet process is more uniform and stable.

[0041] In some embodiments, as shown in Figures 1 to 3 The separation plate group comprises a first plate group 4 and a second plate group 5, the first plate group 4 is arranged around the periphery of the central flow guide pipe 3, and the second plate group 5 is arranged around the periphery of the first plate group 4 and separated by a partition plate.

[0042] The first plate group 4 and the second plate group 5 are both composed of a plurality of inclined plates arranged at intervals, and the adjacent inclined plates form gaps for the sludge 8 to fall.

[0043] Further, the distance between the inclined plates of the first plate group 4 is greater than that of the second plate group 5.

[0044] The inclination angles of the inclined plates of the first plate group 4 and the second plate group 5 can be the same or different.

[0045] Further, a water outlet groove 12 is further arranged on the side wall of the periphery of the second plate group 5, and the top of the side wall of the periphery of the second plate group 5 and the water outlet groove 12 are both higher than the inclined plates in the vertical direction.

[0046] Preferably, the height of the partition plate between the first plate group 4 and the second plate group 5 is flush with or slightly higher than the side wall of the periphery of the second plate group 5, so as to prevent the water at the top of the second plate group 5 from flowing into the area where the first plate group 4 is located.

[0047] The water outlet groove 12 is in communication with the drain pipe 13, and the purified water is discharged from the MCARP anaerobic reactor.

[0048] In the present embodiment, the water flows in the direction indicated by the arrows in Figure 1 and Figure 2 The water flows in the direction indicated by the arrows in the present embodiment, that is, the water flows upward from the top outlet of the central flow guide pipe 3 (overflow downward) into the first plate group 4, and the water is preliminarily separated into solid, liquid and gas under the action of the inclined plates, then the water at the bottom of the first plate group 4 flows downward (upward) into the second plate group 5, and the sludge 8 and the water of biogas which are not completely separated are more completely and deeply separated here, and then rise to the position of the water outlet groove 12 and flow into the water outlet pipe 10, the separated sludge 8 falls from the gaps between the adjacent inclined plates in the first plate group 4 and the second plate group 5 into the sludge collection area 7, and the separated biogas is collected by the top biogas pipe 25 and discharged.

[0049] Further, the area of the inclined plates of the separation plate group accounts for 70% of the cross-sectional area of the tank, and the sedimentation area is large, so that more water can be treated, and the treatment capacity of the anaerobic reactor is stronger.

[0050] In some embodiments, the MCARP anaerobic reactor further comprises a water distribution pipe 18 and a water inlet pipe 19, the water distribution pipe 18 is arranged at the bottom of the reaction section, a plurality of water distribution holes are arranged on the water distribution pipe 18, and the openings of the water distribution holes preferably face upward.

[0051] The water inlet pipe 19 is communicated with the inlet of the water distribution pipe 18 to deliver the wastewater to the reaction zone, and the water inlet pipe 19 is provided with an anaerobic water inlet pump 20 to provide the delivery power.

[0052] Further, in the embodiment, the separation module further comprises a suction pipe 14 communicated with the sludge collection zone 7, and the suction pipe 14 is provided with a plurality of suction holes 15. Figure 1 and Figure 5 As shown in the figure, the separation module further comprises a suction pipe 14 communicated with the sludge collection zone 7, and the suction pipe 14 is provided with a plurality of suction holes 15. One end of a reflux pipe 16 is communicated with the water outlet section and the suction pipe 14, and the other end is communicated with the water inlet pipe 19, and the reflux pipe 16 is provided with a variable frequency circulating water pump 17 to provide the reflux power.

[0053] The sludge 8 gathered in the sludge collection zone 7 enters the suction pipe 14 through the suction holes 15 and is delivered to the lower reaction zone together with a part of the water body in the water outlet zone through the reflux pipe 16 to participate in the anaerobic reaction process again, so as to realize the recycling of the sludge 8 and the improvement of the reaction efficiency, and the refluxed water body can also dilute the water inlet.

[0054] Further, the MCARP anaerobic reactor further comprises a flushing pipe 22 communicated with the suction pipe 14, and the flushing pipe 22 is further provided with a high-pressure flushing pump 23 and a flushing automatic valve 24, which can be automatically started and stopped according to a preset program to perform the regular flushing operation of the suction pipe 14.

[0055] The MCARP anaerobic reactor is preferably provided with a computer with an embedded operation program, and the anaerobic water inlet pump 20 on the water inlet pipe 19, the variable frequency circulating water pump 17 on the reflux pipe 16, and the high-pressure flushing pump 23 and the flushing automatic valve 24 are all connected with the computer control, and the computer controls the operation state of the above-mentioned pump body and valve through the set program to control the regular flushing process of the suction pipe 14, that is, the anaerobic water inlet pump 20 and the variable frequency circulating water pump 17 are closed to stop the water inlet and reflux, and the high-pressure flushing pump 23 and the flushing automatic valve 24 are opened to input clean water from the flushing pipe 22 to flush the suction pipe 14, and the flushing time is preferably 30 minutes. The water after flushing carries the sludge 8, which can enter the lower reaction zone again to participate in the reaction through the reflux pipe 16.

[0056] The flushing water can also be selected from the purified water discharged from the reactor, but it is not limited to this selection, and the specific source of the flushing water can be flexibly determined according to the actual situation.

[0057] In summary, in combination with Figures 1 to 5 , the operation process of the MCARP anaerobic reactor is as follows:

[0058] The anaerobic influent pump 20 on the influent pipe 19 pumps the wastewater into the distribution pipe 18 in the reaction zone, while the variable frequency circulating pump on the return pipe 16 continuously extracts the activated sludge 8 in the sludge collection zone 7 and the purified wastewater in the effluent section, and sends them back to the distribution pipe 18 through the influent pipe 19, so as to ensure that the wastewater and the return water are uniformly distributed in the reaction zone and enter the sludge bulking bed 21 at the same time, and participate in the anaerobic digestion process together.

[0059] The water mixed with the anaerobic sludge 8 rises to the position of the effluent hole 11 of the effluent pipe 10, flows into the annular effluent pipe 10 from the effluent hole 11, and then flows into the central guide pipe 3 through the effluent branch pipe 2. The water body carrying the sludge 8 is turned up (overflow downward) here, enters the first-stage plate group, and is preliminarily separated into solid, liquid and gas. In this process, the biogas generated is collected through the top biogas pipe 25 and sent to a biogas treatment system. The sludge 8 after preliminary separation falls back to the sludge collection zone 7 through the gap between the inclined plates.

[0060] The sludge 8 that is not completely separated and the water body carrying the biogas are turned down (turning up) from the bottom of the first plate group 4, enter the second-stage plate group for further separation. The sludge 8 after secondary separation also falls back to the sludge collection zone 7 through the gap between the inclined plates, and the sludge 8 collected in the zone enters the sludge suction pipe 14 through the sludge suction hole 15, and continues to participate in the return.

[0061] The completely purified water body flows into the drain pipe 13 along the effluent groove 12 of the peripheral side wall of the second plate group 5, and is finally discharged from the MCARP anaerobic reactor.

[0062] In order to prevent the system from being blocked, the high-pressure flushing pump 23 and the flushing automatic valve 24 are started regularly to stop the influent and return processes, and the sludge suction pipe 14 is flushed and maintained.

[0063] The ideal embodiment of the utility model is an inspiration, and through the above description, relevant personnel can certainly make various changes and modifications without deviating from the technical idea of the utility model.

[0064] The technical scope of the utility model is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A MCARP anaerobic reactor, characterized in that, the MCARP anaerobic reactor comprises an effluent section and a reaction section, the effluent section is provided with a separation module, and the reaction section is provided with a sludge expanded bed; the separation module comprises a plurality of effluent branch pipes, a central flow guide pipe, a separation plate group arranged around the central flow guide pipe, and a sludge collection area; the effluent branch pipe comprises a vertical section and a horizontal section, the opening of the vertical section faces the top of the effluent section, and the horizontal section communicates with the inlet of the central flow guide pipe to transport water in the effluent section to the central flow guide pipe; the central flow guide pipe is used for guiding water to the separation plate group for separation of sludge and biogas; the sludge collection area is arranged below the separation plate group and is used for collecting sludge particles falling through the gaps of the separation plate group. 2.The MCARP anaerobic reactor according to claim 1, characterized in that, the separation module further comprises: an effluent pipe arranged near the top of the effluent section and vertically higher than the top of the vertical section; a plurality of upwardly open effluent holes are arranged on the effluent pipe, and the effluent pipe communicates with the vertical section. 3.The MCARP anaerobic reactor according to claim 1, characterized in that, the separation plate group comprises a first plate group and a second plate group, the first plate group is arranged around the periphery of the central flow guide pipe, and the second plate group is arranged around the periphery of the first plate group; the first plate group and the second plate group are both composed of a plurality of inclined plates arranged at intervals, and gaps for sludge falling are formed between adjacent inclined plates. 4.The MCARP anaerobic reactor according to claim 3, characterized in that, the inclined plate spacing of the first plate group is greater than that of the second plate group; and / or, the inclined plate inclination angles of the first plate group and the second plate group are the same. 5.The MCARP anaerobic reactor according to claim 3 or 4, characterized in that, further comprising an effluent tank and a drain pipe, the effluent tank is arranged on the side wall of the periphery of the second plate group, and the top of the side wall of the periphery of the second plate group and the effluent tank are both vertically higher than the inclined plates; the drain pipe communicates with the effluent tank to discharge purified water. 6.The MCARP anaerobic reactor according to claim 1, characterized in that, further comprising a water distribution pipe and an inlet pipe, the water distribution pipe is arranged at the bottom of the reaction section, and a plurality of water distribution holes are arranged on the water distribution pipe; the inlet pipe communicates with the inlet of the water distribution pipe, and an anaerobic inlet pump is arranged on the inlet pipe. 7.The MCARP anaerobic reactor according to claim 6, characterized in that, the separation module further comprises a sludge suction pipe, and the MCARP anaerobic reactor further comprises a reflux pipe, the sludge suction pipe communicates with the sludge collection area, and a plurality of sludge suction holes are arranged on the sludge suction pipe; one end of the reflux pipe communicates with the effluent section and the sludge suction pipe, and the other end communicates with the inlet pipe, and a variable frequency circulating water pump is arranged on the reflux pipe. 8.The MCARP anaerobic reactor according to claim 7, characterized in that, further comprising: The flushing pipe, the high-pressure flushing pump and the flushing automatic valve; The flushing pipe is communicated with the suction pipe; The high-pressure flushing pump and the flushing automatic valve are arranged on the flushing pipe and automatically start and stop according to a preset program, so as to perform the periodic flushing operation of the suction pipe.

9. The MCARP anaerobic reactor according to claim 1, wherein, Further comprising: a biogas pipe communicated with the top of the water outlet section, for collecting and discharging the biogas separated by the separation plate set; and / or, The sludge collecting area is in the shape of a cone.

10. The MCARP anaerobic reactor according to claim 2, wherein, The water outlet pipe is annular.

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