Anaerobic composite bed reactor integrating water outlet channel and three-phase separator

Abstract

The invention discloses an anaerobic composite bed reactor integrating a water outlet channel and a three-phase separator, and belongs to the technical field of wastewater treatment.The reactor comprises the water outlet channel, the three-phase separator and a water distribution pipeline, the water outlet channel and the three-phase separator are built in a combined mode, and the water distribution pipeline is connected with the water outlet channel and the three-phase separator which are built in a combined mode. The three-phase separator is divided into an upper settling zone, a middle reaction zone and a lower mud bucket zone, the water distribution pipeline comprises a water inlet distribution pipe and an internal reflux distribution pipe, a water inlet of the water inlet distribution pipe extends to the outside of the three-phase separator, a water outlet of the water inlet distribution pipe extends to the center of the lower mud bucket zone, and the internal reflux distribution pipe is arranged in the middle reaction zone below the three-phase separator. The reactor is stable in operation, high in treatment efficiency, convenient to construct and install and low in investment cost, and solves the problems of large occupied area of anaerobic precipitation, complex structure of an anaerobic tower, strict water distribution and collection, strict three-phase separation requirement and high foundation bearing capacity requirement in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an anaerobic composite bed reactor integrating a water outlet channel and a three-phase separator. Background Art

[0002] As the current industry standards in my country are becoming more and more stringent, in order to meet the standards for discharge or reuse, many wastewaters need to be separated by quality and diverted. High-concentration wastewater is separated for enhanced treatment. High-efficiency anaerobic reaction is a more practical enhanced biological treatment process for high-concentration organic wastewater. It has low operating costs and can produce beneficial biogas energy for recycling. Common practices include anaerobic plus anaerobic precipitation combination, ABR, and various anaerobic tower equipment, such as UASB, EGSB, IC, etc. The anaerobic plus anaerobic precipitation combination process increases the sludge concentration through the return of anaerobic precipitation sludge, thereby improving the treatment effect. The disadvantage is that it occupies a large area. ABR uses a series of reaction chambers to assist the return to maintain a certain flow rate and sludge concentration. The disadvantage is that the height is limited. Anaerobic tower equipment has good effects. Basically, internal reflux is set. The sedimentation area is located at the top of the tower. The water distribution is strict, the effluent weir requirements are strict, the three-phase separation requirements are strict, the gas collection system is complex, the height-to-diameter ratio is large, and the foundation bearing capacity requirements are high.

[0003] In this regard, the present application designs an anaerobic composite bed reactor integrating an outlet channel and a three-phase separator. Summary of the invention

[0004] The purpose of the present invention is to provide an anaerobic composite bed reaction system which integrates a water outlet channel and a three-phase separator, which has mature technology, reliability, good operation stability, high treatment efficiency, good effect, simple structure, convenient construction and installation, convenient sludge discharge, and low investment; and solves the problems of large land occupation, complex anaerobic tower structure, strict water collection, strict three-phase separation requirements, and high foundation bearing capacity requirements of the existing anaerobic and sedimentation.

[0005] The present invention provides an anaerobic composite bed reactor integrating a water outlet channel and a three-phase separator, comprising a water outlet channel, a three-phase separator and a water distribution pipeline, wherein the water outlet channel and the three-phase separator are constructed together, and are divided into an upper sedimentation zone, a middle reaction zone and a lower mud bucket zone with the jointly constructed water outlet channel and the three-phase separator as the boundary, the water distribution pipeline comprises a water inlet distribution pipe and an internal reflux water distribution pipe, the water inlet of the water inlet distribution pipe extends to the outside of the three-phase separator, and the water outlet extends to the center of the lower mud bucket zone, the internal reflux water distribution pipe is arranged in the middle reaction zone below the three-phase separator, and its water outlet end extends to the center of the lower mud bucket zone.

[0006] As a preferred embodiment of the present application: the internal reflux water distribution pipe comprises a permeation water inlet pipe section, a negative pressure suction pipe section and a water outlet pipe section which are connected in sequence, the permeation water inlet pipe section is transversely arranged in the area near the upper end of the middle reaction zone, the negative pressure suction pipe section is located outside the three-phase separator and is provided with a reflux pump thereon, and the water outlet pipe section is arranged in the area near the lower end of the middle reaction zone and extends longitudinally to the center of the lower mud bucket area.

[0007] As a preferred embodiment of the present application: the negative pressure suction pipe section includes a plurality of branch pipe sections, each branch pipe section is respectively provided with a reflux pump, and the plurality of branch pipe sections share the same water inlet and outlet.

[0008] As a preferred embodiment of the present application: the three-phase separator is a hood-type structure, and a plurality of groups of air ducts extending to the outside are arranged on the top thereof.

[0009] As a preferred embodiment of the present application: the water inlet distribution pipe is arranged longitudinally and passes through the middle reaction zone and the lower mud bucket zone in sequence.

[0010] As a preferred embodiment of the present application: the width dimension of the outlet channel corresponds to the width dimension of the top of the three-phase separator, and the height dimension is 700-800 cm.

[0011] As a preferred embodiment of the present application: the side edge of the outlet channel is in the shape of comb teeth, wherein the distance between the tooth top and the tooth root is less than or equal to 100 cm.

[0012] As a preferred embodiment of the present application: the model of the water inlet water distribution pipe is DN50, and the model of the internal return water distribution pipe is DN100.

[0013] As a preferred embodiment of the present application: the height of the middle reaction zone is 300 cm, and the bottom inclination angle of the mud bucket in the lower mud bucket area is 20°.

[0014] Compared with the prior art, the advantages of this application are: The three-phase separator with a large umbrella-shaped structure is conducive to the obvious physical separation of the precipitation zone and the main reaction zone of the biological filler; The outlet channel and the three-phase separator are built together, with a simple structure and an excellent outlet path. The gas pipe discharges the biogas and other gases in time, and the interference of gas-liquid-solid separation is reduced to a minimum. The biological filler is set in the middle reaction zone, which is beneficial to increase the sludge concentration, improve the treatment efficiency, and facilitate the redistribution of water. The mud film mixing method makes the system removal more stable; Setting up a mud bucket area is conducive to even water distribution; The water inlet distribution pipe and the internal return water distribution pipe are not shared, and they operate independently and stably without interfering with each other; 6. To facilitate the implementation of project transformation, a device integrating the outlet channel and the three-phase separator is added to the original pool body, and a mud bucket area is added at the bottom, and an auxiliary water distribution system and a reflux system can be used; 7. The treatment system can be used as an anaerobic reactor or a hydrolysis acidification reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main structure of an anaerobic composite bed reactor integrating an outlet channel and a three-phase separator provided in this embodiment.

[0016] Figure 2 A schematic diagram of the side view of the anaerobic composite bed reactor integrating an outlet channel and a three-phase separator provided in this embodiment.

[0017] Figure 3 A top plan view of an anaerobic composite bed reactor integrating an outlet channel and a three-phase separator provided in this embodiment.

[0018] Figure 4 A plan view of the middle portion of an anaerobic composite bed reactor integrating an outlet channel and a three-phase separator provided in this embodiment.

[0019] Figure 5 Bottom plan view of the anaerobic composite bed reactor integrating the outlet channel and the three-phase separator provided in this embodiment.

[0020] Figure 6 This is a schematic diagram of the main structure of the water outlet channel provided in this embodiment. Attached photos

[0021] 1 is the outlet channel, 10 is the outlet pipe, 2 is the three-phase separator, 3 is the upper sedimentation zone, 4 is the middle reaction zone, 5 is the lower mud bucket zone, 6 is the water inlet distribution pipe, 7 is the internal reflux water distribution pipe, 71 is the water inlet pipe section, 72 is the negative pressure suction pipe section, 73 is the outlet pipe section, 74 is the reflux pump, and 8 is the air guide pipe. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0023] like Figure 1-5As shown in the figure (the arrow in the figure indicates the direction of liquid flow), it is a schematic diagram of an anaerobic compound bed reactor integrating an outlet channel and a three-phase separator provided in this embodiment, the system includes an outlet channel 1, a three-phase separator 2 and a water distribution pipeline, the outlet channel 1 and the three-phase separator 2 are built as one anaerobic compound bed reaction system, with the outlet channel 1 and the three-phase separator 2 as the boundary, it is divided into an upper sedimentation area 3, a middle reaction area 4 and a lower mud bucket area 5, biological fillers are suspended inside the middle reaction area 4, the three-phase separator 2 adopts a large umbrella cover structure, and a plurality of groups of air guide pipes 8 extending to the outside are arranged on the top of the cover to discharge the gas such as biogas out of the system in time; the water distribution pipeline includes a water inlet distribution pipe 6 and an internal reflux distribution pipe 7. The water pipe 7 and the water inlet distribution pipe 6 are arranged longitudinally and pass through the middle reaction zone 4 and the lower mud bucket zone 5 in sequence. The water inlet of the water inlet distribution pipe 6 extends to the outside of the three-phase separator 2, and the water outlet extends to the center of the lower mud bucket zone 5. The internal reflux distribution pipe 7 is arranged in the middle reaction zone 4 below the three-phase separator 2, and its water outlet extends to the center of the lower mud bucket zone 5. The lower mud bucket zone 5 receives water from the water inlet distribution pipe 6 and the internal reflux distribution pipe 7. The water impacts the center of the bottom of the mud bucket from top to bottom, and the water is evenly distributed upward along the slope of the mud bucket through the reaction force to improve the flow uniformity. The water inlet distribution pipe 6 and the internal reflux distribution pipe 7 are not shared, and they are independently operated without interfering with each other.

[0024] In this embodiment, the treatment system is 600×600cm in length and width, 700cm in net height, and has a total effective volume of approximately 220m 3 The bottom of the mud bucket in the lower mud bucket area 5 has an inclination angle of 20°, and the height of the middle reaction zone 4 is 300 cm.

[0025] The internal reflux water distribution pipe 7 includes an infiltration water inlet pipe section 71, a negative pressure suction pipe section 72 and a water outlet pipe section 73 which are connected in sequence. The infiltration water inlet pipe section 71 is horizontally arranged in the area near the upper end of the middle reaction zone 4. It can be understood that the infiltration aperture on the infiltration water inlet pipe section 71 can be selected according to actual needs. The negative pressure suction pipe section 72 is located outside the three-phase separator 2, and is provided with a reflux pump 74 with a flow counting function. The water outlet pipe section 73 is arranged in the area near the lower end of the middle reaction zone 4 and extends longitudinally to the center of the lower mud bucket area 5. The negative pressure suction pipe section 72 includes a plurality of branch pipe sections, each of which is provided with a reflux pump 74, and the plurality of branch pipe sections share the same water inlet and outlet, such as Figure 2 and 4 As shown, the internal return water distribution pipe 7 using this structure can realize the effective and timely internal circulation of internal water, improve the purification efficiency, and the internal return flow rate is preferably controlled according to actual needs.

[0026] In this embodiment, the model of the water inlet water distribution pipe 6 is DN50, and the model of the internal return water distribution pipe 7 is DN100.

[0027] The width of the outlet channel 1 corresponds to the width of the top of the three-phase separator 2, and the height is 700-800 cm. In order to facilitate water inlet, the side edge of the outlet channel 1 is comb-shaped, wherein the distance between the tooth top and the tooth root is less than or equal to 100 cm. Figure 6 As shown, in this embodiment, an outlet pipe 10 is provided on the outlet channel 1, and the supernatant entering the outlet channel 1 is discharged through the outlet pipe 10. The outlet pipe is preferably DN80.

[0028] The use principle includes: the raw water first enters the water inlet distribution pipe 6 through the water inlet pipe, and is distributed to the center of the lower mud bucket area 5. The water is turned up from the bottom to the top and enters the middle main reaction area with biological filler for anaerobic biological reaction. The main reaction area is provided with an internal reflux distribution pipe 7, and the upper mixed liquid is transported to the center of the lower mud bucket area 5 through the internal reflux pump 74 through the internal reflux distribution pipe 7, and the internal reflux amount is accurately measured by the reflux pump 74 with a metering function. The biogas and other gases formed by the biochemical reaction are discharged from the reactor through the air guide pipe 8. The mud and water mixture after the biochemical reaction in the middle reaction area 4 enters the sedimentation area through the gap between the three-phase separator 2 and the reactor wall for mud and water separation. The supernatant flows into the outlet channel 1 and is then discharged, and the precipitated sludge flows back to the middle reaction area 4 through the gap to continue the reaction.

[0029] The treatment system of this embodiment is applied in the project, and the implementation results are: the daily water treatment volume is 50m 3 The system has a length and width of 600×600cm, a net height of 700cm, and a total effective volume of approximately 220m 3 , residence time: 4.4d; the gap between the three-phase separator and the reactor wall is 755mm, the angle of the three-phase separator is 36°, the angle of the mud bucket is 20°, the height of the biological filler area is 300cm, and the flow rate in the middle reaction zone after internal reflux is controlled at: 3~7m / h.

[0030] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several improvements can be made without departing from the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. The anaerobic compound bed reactor integrating the outlet channel and the three-phase separator is characterized by: It includes a water outlet channel, a three-phase separator and a water distribution pipeline. The water outlet channel and the three-phase separator are built together, and are divided into an upper sedimentation area, a middle reaction area and a lower mud bucket area with the built-together water outlet channel and the three-phase separator as the boundary. The water distribution pipeline includes an inlet water distribution pipe and an internal reflux water distribution pipe. The water inlet of the inlet water distribution pipe extends to the outside of the three-phase separator, and the water outlet extends to the center of the lower mud bucket area. The internal reflux water distribution pipe is arranged in the middle reaction area below the three-phase separator, and its water outlet end extends to the center of the lower mud bucket area.

2. The anaerobic composite bed reactor integrating the outlet channel and the three-phase separator according to claim 1, characterized in that: The internal reflux water distribution pipe comprises a permeation water inlet pipe section, a negative pressure suction pipe section and a water outlet pipe section which are connected in sequence. The permeation water inlet pipe section is transversely arranged in the area near the upper end of the middle reaction zone, the negative pressure suction pipe section is located outside the three-phase separator and is provided with a reflux pump thereon, and the water outlet pipe section is arranged in the area near the lower end of the middle reaction zone and extends longitudinally to the center of the lower mud bucket area.

3. The anaerobic composite bed reactor integrating the outlet channel and the three-phase separator according to claim 2, characterized in that: The negative pressure suction pipe section comprises a plurality of branch pipe sections, each of which is provided with a reflux pump, and the plurality of branch pipe sections share the same water inlet and water outlet.

4. The anaerobic composite bed reactor integrating the outlet channel and the three-phase separator according to claim 1, characterized in that: The three-phase separator is a hood-shaped structure, and a plurality of groups of air guide pipes extending to the outside are arranged on the top of the hood-shaped structure.

5. The anaerobic composite bed reactor integrating the outlet channel and the three-phase separator according to claim 1, characterized in that: The water inlet distribution pipe is arranged longitudinally and passes through the middle reaction zone and the lower mud bucket zone in sequence.

6. The anaerobic composite bed reactor integrating a water outlet channel and a three-phase separator according to claim 1, characterized in that: The width of the outlet channel corresponds to the width of the top of the three-phase separator, and the height is 700-800 cm.

7. The anaerobic composite bed reactor integrating a water outlet channel and a three-phase separator according to claim 1, characterized in that: The side edge of the outlet channel is in the shape of comb teeth, wherein the distance between the tooth top and the tooth root is less than or equal to 100 cm.

8. The anaerobic composite bed reactor integrating a water outlet channel and a three-phase separator according to claim 1, characterized in that: The model of the water inlet distribution pipe is DN50, and the model of the internal return water distribution pipe is DN100.

9. The anaerobic composite bed reactor integrating a water outlet channel and a three-phase separator according to claim 1, characterized in that: The height of the middle reaction zone is 300 cm, and the bottom of the mud bucket in the lower mud bucket area has an inclination angle of 20°.

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