Water distribution pipeline system of up-flow anaerobic treatment reactor

Abstract

The invention provides a water distribution pipeline system of an up-flow anaerobic treatment reactor. The water distribution pipeline system comprises a water inlet main pipe; the water distribution annular pipe is positioned below the water inlet main pipe; the water distribution branch pipe group comprises a plurality of water distribution branch pipes, one end of each water distribution branch pipe is connected with the water distribution annular pipe, and the other end of each water distribution branch pipe is used for extending into the sewage treatment tank body; the water inlet diversion pipe is of a Y-like Y-shaped pipe structure, comprises a water inlet end and two water outlet ends and is perpendicular to the plane where the water distribution annular pipe is located, the water inlet end of the water inlet diversion pipe is communicated with the water outlet end of the water inlet main pipe, one water outlet end of the water inlet diversion pipe is connected with the water distribution annular pipe, and the other water outlet end of the water inlet diversion pipe is connected with the water distribution annular pipe; the other water outlet end of the water inlet diversion pipe is connected with the water distribution annular pipe; wherein sewage to be treated flows in from the water inlet pipe, flows into the water distribution annular pipe from two water outlet ends of the water inlet diversion pipe through the water inlet diversion pipe, and then flows into each water distribution branch pipe in the water distribution branch pipe group from the water distribution annular pipe.

Description

Technical Field

[0001] The present application relates to the technical field of upflow anaerobic treatment reactors, and in particular to a water distribution pipeline system of an upflow anaerobic treatment reactor. Background Art

[0002] The structure of the UASB (Upflow Anaerobic Sludge Bed) reactor or upflow anaerobic treatment reactor is mainly composed of an inlet and water distribution pipe system, a granular sludge reaction zone (or anaerobic sludge bed), a separator, an outlet system and a sludge discharge system.

[0003] The sewage to be treated is sent to the upflow anaerobic treatment reactor through a water pump and transported from the bottom of the upflow anaerobic treatment reactor;

[0004] A large amount of anaerobic granular sludge remains in the granular sludge reaction zone. The sludge has good sedimentation and coagulation properties. The sewage to be treated flows in from the bottom of the anaerobic sludge bed and mixes with the sludge in the granular sludge reaction zone. The microorganisms in the sludge decompose the organic matter in the sewage and convert it into biogas, thereby realizing anaerobic treatment of the sewage to be treated.

[0005] At present, the water distribution method of upflow anaerobic treatment reactor is mainly a one-pipe-multiple-point layout, where a main water distribution pipe is connected to multiple water distribution branches. There is a problem of uneven water distribution, and the sewage cannot be evenly distributed in the anaerobic sludge bed, which affects the treatment effect.

[0006] Liquor, such as Maotai-flavor liquor, produces wastewater containing distiller's grains, rice bran, etc. Although it is pre-treated in the previous stage, depending on the operation of the sewage treatment plant, small debris such as rice bran will still enter the water distribution pipe of the UASB reactor through the regulating tank. The long-term operation of the pipe will accumulate debris, sludge, etc., which will aggravate the blockage problem of the water distribution pipe, resulting in more serious uneven water distribution, affecting the sewage flow entering the UASB reactor and the treatment effect. Summary of the invention

[0007] The present application provides a water distribution pipeline system for an upflow anaerobic treatment reactor, comprising:

[0008] The water inlet main pipe is arranged above the sewage treatment tank body of the upflow anaerobic treatment reactor and is used to transport the sewage to be treated to the sewage treatment tank body;

[0009] The water distribution annular pipe is arranged above the sewage treatment tank and below the water inlet main pipe;

[0010] A water distribution branch group includes a plurality of water distribution branches arranged at intervals on the water distribution annular pipe, one end of each water distribution branch is connected to the water distribution annular pipe, and the other end of each water distribution branch is used to extend into the sewage treatment tank body;

[0011] The water inlet manifold has a Y-shaped three-pronged pipe structure, including a water inlet end and two water outlet ends. The water inlet manifold is arranged perpendicular to the plane where the water distribution annular pipe is located. The water inlet end of the water inlet manifold is connected to the water outlet end of the water inlet main pipe, one water outlet end of the water inlet manifold is connected to the water distribution annular pipe, and the other water outlet end of the water inlet manifold is connected to the water distribution annular pipe;

[0012] Among them, the sewage to be treated flows into the water inlet pipe, passes through the water inlet diverter pipe, and flows into the water distribution annular pipe from the two water outlet ends of the water inlet diverter pipe, and then flows from the water distribution annular pipe into each water distribution diverter in the water distribution diverter group, so that the sewage to be treated flows into the bottom of the sewage treatment tank.

[0013] In some optional embodiments of the present application, the water distribution annular pipe is rectangular and has a length direction and a width direction. The water distribution annular pipe has a first long pipe section and a second long pipe section extending in the length direction and arranged opposite to each other. One water outlet end of the water inlet diverter pipe is connected to the first long pipe section, and the other water outlet end of the water inlet diverter pipe is connected to the second long pipe section.

[0014] In some optional embodiments of the present application, a water inlet flowmeter and two water inlet main control valves are installed on the water inlet main pipe, and a water inlet flowmeter is arranged between the two water inlet main control valves in the water inlet direction of the water inlet main pipe.

[0015] In some optional embodiments of the present application, the water distribution pipe system further includes a water inlet standby pipe, which is arranged above the sewage treatment tank body of the upflow anaerobic treatment reactor, and the water inlet standby pipe is connected to the water inlet main pipe at a first connection, and the first connection is arranged after the two water inlet main pipe control valves in the water inlet direction of the water inlet main pipe;

[0016] In some optional embodiments of the present application, a backup water inlet pipeline control valve is provided on the backup water inlet pipeline.

[0017] In some optional embodiments of the present application, the water inlet main pipe is made of stainless steel.

[0018] In some optional embodiments of the present application, the water inlet main pipe is made of 304 stainless steel.

[0019] In some optional embodiments of the present application, the water distribution annular pipe is made of stainless steel.

[0020] In some optional embodiments of the present application, the water distribution annular pipe is made of 304 stainless steel.

[0021] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0022] The bypass pipe is connected to the water inlet main pipe to form the second connection. The bypass pipe is used to adjust the bypass water volume to control the inflow of sewage to be treated. The bypass water volume refers to the amount of water that does not pass through the anaerobic unit after the sewage comes out of the regulating tank. It is used to supplement the organic matter content of the aerobic unit and reduce the amount of carbon source agent added to the aerobic unit.

[0023] In some optional embodiments of the present application, the axial direction of the override pipe is parallel to the length direction, and an override pipe and an override pipe control valve are installed on the override pipe.

[0024] In some optional embodiments of the present application, the override tube is made of stainless steel.

[0025] In some optional embodiments of the present application, the override tube is made of 304 stainless steel.

[0026] In some optional embodiments of the present application, the water inlet diverter pipe has a converging main pipe section, a first diverter bend section and a second diverter bend section. The pipe axis of the converging main pipe section is perpendicular to the plane where the water distribution annular pipe is located. The first diverter bend and the second diverter bend are symmetrically arranged in the pipe axis of the converging main pipe section and are generally in an inverted U shape. The water inlet end is in the converging main pipe section, and the two water outlet ends are respectively in the first diverter bend section and the second diverter bend section.

[0027] In some optional embodiments of the present application, in the length direction, the water inlet diverter pipe is located in the area 1 / 6L to 1 / 2L away from the first end of the water distribution annular pipe, and L is the length of the water distribution annular pipe in the length direction.

[0028] In some optional embodiments of the present application, the water inlet diverter pipe is located in the area 1 / 3L to 1 / 2L away from the first end of the water distribution annular pipe. Furthermore, the first diverter bend pipe section is connected to the first long pipe section to form a third connection, and the second diverter bend pipe is connected to the second long pipe section to form a fourth connection. A first guide plate is provided at the pipe end of the first diverter bend pipe section at the third connection, a first guide plate is provided at the pipe end of the first diverter bend pipe section at the third connection, and a second guide plate is provided at the pipe end of the second diverter bend pipe section at the fourth connection. Both the first guide plate and the second guide plate are curved arc plates that are spaced apart from the bottom of the water distribution annular pipe. In the length direction, the guide direction of the first guide plate is opposite to the guide direction of the second guide plate to form a circulation in the water distribution annular pipe.

[0029] In some optional embodiments of the present application, the distance between the curved arc plate and the bottom of the water distribution annular pipe is 5 cm to 10 cm.

[0030] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0031] The chemical dosing pipe is connected with the converging main pipe section to form a fifth connection point, which is used to add chemical solution to adjust the pH value of the sewage to be treated in the sewage treatment tank.

[0032] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0033] The sludge return pipe is used to return the sludge at the bottom of the sewage treatment tank to the sewage treatment tank. The sewage return pipe includes a sludge inlet end and a sludge outflow end. The sludge outflow end, the water inlet end of the water inlet diverter pipe and the water outlet end of the water inlet main pipe are connected to form a sixth connection point.

[0034] In some optional embodiments of the present application, a sludge return flow meter and a sludge return pipe valve are provided on the sludge return pipe.

[0035] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0036] The drain pipe is connected to a short pipe section of the water distribution annular pipe and is extended along the length direction, and is used to discharge impurities outward. The water distribution annular pipe has two opposite short pipe sections in the width direction;

[0037] The slag filter bag is arranged at the discharge outlet of the drain pipe.

[0038] In some optional embodiments of the present application, the slag filter net bag is made of stainless steel.

[0039] In some optional embodiments of the present application, the slag filter net bag is made of 304 stainless steel.

[0040] In some optional embodiments of the present application, the depth of the slag filter bag is 30 cm to 40 cm.

[0041] In some optional embodiments of the present application, the water inlet diverter pipe is disposed close to one of the two opposite short pipe sections, and the drain pipe is connected to the other of the two opposite short pipe sections.

[0042] In some optional embodiments of the present application,

[0043] A plurality of water distribution branches are arranged at intervals along the first long pipe section and the second long pipe section.

[0044] The water distribution branch pipe includes an inverted L-shaped lead-out pipe section, a connecting transparent pipe section and a vertical dredging pipe section, and the connecting transparent pipe section and the vertical dredging pipe section are both arranged perpendicular to the water distribution annular pipe;

[0045] One end of the inverted L-shaped outlet pipe section is connected to the water distribution annular pipe, and the other end of the vertical dredging pipe section is connected to the vertical dredging pipe section to form a seventh connection point. The inverted L-shaped outlet pipe section is provided with a first water distribution branch control valve;

[0046] In the liquid flow direction of the vertical dredging pipe section, a second water distribution branch control valve is arranged on the vertical dredging pipe section before the seventh connection point;

[0047] The connecting transparent pipe section is connected to the outflow end of the vertical dredging pipe section, and the outflow end of the connecting transparent pipe section is provided with a third water distribution branch control valve.

[0048] In some optional embodiments of the present application, the connecting transparent tube section is a hose;

[0049] In some optional embodiments of the present application, the water distribution branch has an overall H-shaped structure.

[0050] In some optional embodiments of the present application, the other pipe sections of the water distribution manifold except the connecting transparent pipe section are made of stainless steel.

[0051] In some optional embodiments of the present application, the other pipe sections of the water distribution manifold except the connecting transparent pipe section are made of 304 stainless steel.

[0052] In some optional embodiments of the present application, it also includes:

[0053] A water distribution pipe, wherein the plurality of water distribution pipes are connected one by one with the plurality of water distribution branches, one end of the water distribution pipe is connected with the second water distribution branch control valve, and the other end of the water distribution pipe is arranged at the bottom of the sewage treatment tank body.

[0054] In some optional embodiments of the present application, the water distribution pipe is made of PE material.

[0055] In some optional embodiments of the present application, a water distribution branch flushing port is provided at the top of the vertical dredging pipe section.

[0056] Beneficial effects:

[0057] The water distribution pipe system of the upflow anaerobic treatment reactor of the present application is designed by setting up a water inlet main pipe, a water distribution annular pipe, a water distribution branch group and a matching design of a water inlet branch pipe, so that the sewage to be treated enters the annular pipe first after entering the water inlet main pipe, and forms a circulation in the annular pipe, so that the water flow pressure in the pipe is basically consistent, and the water flow pressure of each water distribution branch in the water distribution branch group is closer, so that the water inlet in the UASB reactor is more uniform, and the blockage of the water distribution branch is avoided. It ensures that the sewage is evenly distributed in the anaerobic sludge bed, and improves the treatment effect of the sewage to be treated.

[0058] The water distribution pipe system of the upflow anaerobic treatment reactor enables the upflow anaerobic treatment reactor to have excellent sewage treatment capabilities, and the sewage flows smoothly, and is particularly suitable for the treatment of wastewater generated in the production process of liquor. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1This is a side view of the internal structure of the sewage treatment tank in the embodiment of the present application;

[0060] Figure 2 This is a front view of the internal structure of the sewage treatment tank in the embodiment of the present application;

[0061] Figure 3 It is a top view of the upflow anaerobic treatment reactor in the embodiment of the present application;

[0062] Figure 4 for Figure 3 Schematic diagram of the cross section in the EE direction;

[0063] Figure 5 for Figure 3 Schematic diagram of the cross section in the FF direction;

[0064] Figure 6 This is a schematic diagram of the partial front structure of the upflow anaerobic treatment reactor in the embodiment of the present application;

[0065] Figure 7 Schematic diagram of the locations of the first guide plate and the second guide plate in the upflow anaerobic treatment reactor in an embodiment of the present application.

[0066] Reference numerals:

[0067] 1-water inlet main pipe; 2-water inlet flowmeter; 3-water inlet main pipe control valve; 4-override pipe; 5-override pipe flowmeter; 6-override pipe control valve; 7-agent dosing pipe; 8-water inlet diverter pipe; 81-converging main pipe section; 82-first diverter elbow section; 83-second diverter elbow section; 9-water distribution annular pipe;

[0068] 10-water distribution manifold; 101-inverted L-shaped lead-out pipe section; 102-first water distribution manifold control valve; 103-vertical dredging pipe section; 104-second water distribution manifold control valve;

[0069] 11-sludge return pipe; 12-sludge return flowmeter; 13-sludge return pipe valve; 14-slag filter bag; 15-drain pipe valve; 16-drain pipe; 17-water collecting tank; 181-first guide plate; 182-second guide plate; 19-water distribution pipe; 20-biogas collection main pipe; 201-biogas collection branch pipe; 21-connecting transparent pipe section; 22-third water distribution branch control valve; 23-water distribution pipe flange; 24-water distribution branch flushing port; 25-water inlet standby pipe; 251-water inlet standby pipe control valve;

[0070] 26- sewage treatment tank body; A- water distribution area; B- reaction area; C- separation area; D- collection area; D1- air chamber; D2- retaining wall; D3- outlet weir; D4- water tunnel; D5- reflection cone; D6- three-phase separator; D7- connecting pipe. DETAILED DESCRIPTION

[0071] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0072] like Figure 1 and Figure 2 As shown, the upflow anaerobic treatment reactor in the embodiment of the present application includes: a water distribution pipeline system and a sewage treatment tank body 26. The water distribution pipeline system is at least used to transport the sewage to be treated to the bottom of the sewage treatment tank body 26.

[0073] In some examples, the wastewater to be treated is the production wastewater of Maotai-flavor liquor.

[0074] The sewage treatment tank body 26 is provided with a water distribution area A, a reaction area B, a separation area C and a collection area D in sequence from bottom to top.

[0075] The water distribution area A is located at the bottom of the sewage treatment tank body 26, and the water distribution area A includes a plurality of reflection cones D5 and a connecting pipe D7. The sewage treatment tank body water distribution pipe system is at least used to transport the sewage to be treated to the water distribution area A, so that the sewage to be treated enters the upflow anaerobic treatment reactor from the bottom of the sewage treatment tank body 26. The reflection cone D5 is a relatively common setting at the bottom of the upflow anaerobic treatment reactor. The water outlet structure of the water distribution pipe system at the bottom of the sewage treatment tank body 26 is generally set on the conical surface of the reflection cone D5, so that the sewage to be treated can diffuse along the surface of the reflection cone D5 after flowing out, and quickly disperse and flush to the bottom of the reaction tank, ensuring that the sludge and wastewater can fully contact.

[0076] Reaction zone B includes an anaerobic sludge bed. A large amount of anaerobic granular sludge remains in the anaerobic sludge bed. The sludge bed composed of flocculent or granular sludge has good sedimentation and coagulation properties. The sewage to be treated flows into the bottom of the anaerobic sludge bed from the water distribution zone A, and is mixed and contacted with the sludge in the granular sludge layer. The microorganisms in the sludge decompose the organic matter in the sewage and convert it into biogas. The biogas is continuously released in the form of tiny bubbles. The tiny bubbles continuously merge during the rising process to form large bubbles. A low-concentration granular sludge area (or sludge suspension layer) with a relatively thin sludge concentration is formed in the upper part of the anaerobic sludge bed due to the stirring of biogas. The tiny particles escape with the water flow and rise with the water into the separation zone C.

[0077] The separation zone C includes multiple three-phase separators D6. The biogas (gas) produced in the reaction zone B, the treated water (liquid), and the sludge particles (solid) are separated in the three-phase separator D6. After separation, the biogas is collected in the gas chamber D1, and the sludge particles return to the sludge suspension layer. The treated water overflows the outlet weir D3 and passes through the water hole D4 to be collected in the water collection tank 17 set on one side of the sewage treatment tank body 26.

[0078] The above-mentioned collection area D is set at the top of the sewage treatment tank body 26, and the collection area D includes a water outlet weir D3 and an air chamber D1 set on the side wall of the sewage treatment tank body 26. The sewage treatment tank body 26 includes two retaining walls D2 arranged at intervals, one end of the retaining wall D2 is connected to the top cover of the sewage treatment tank body 26, and the other end of the retaining wall D2 extends to the bottom of the sewage treatment tank body 26. In some examples, the retaining wall D2 extends to the separation area C, and the other end of the retaining wall D2 is arranged flush with the three-phase separator D6 placed closest to the bottom of the sewage treatment tank body 26, or the other end of the retaining wall D2 is arranged beyond the three-phase separator D6 placed closest to the bottom of the sewage treatment tank body 26. The above-mentioned air chamber D1 is formed between the two retaining walls D2, and the air chamber D1 is used to collect the biogas separated from the three-phase separator D6 during the treatment process.

[0079] In some optional embodiments of the second aspect of the present application, the upflow anaerobic treatment reactor also includes a biogas collecting main pipe 20 and a biogas collecting branch pipe 201. The biogas collecting branch pipe 201 is arranged perpendicular to the plane where the water distribution annular pipe is located and is connected to the air chamber D1. A plurality of biogas collecting branch pipes 201 are arranged in a row at intervals in the length direction. The biogas collecting main pipe 20 is arranged above the plurality of biogas collecting branch pipes 201 and is connected to the plurality of biogas collecting branch pipes 201.

[0080] In some optional embodiments of the second aspect of the present application, the water distribution annular pipe is arranged vertically corresponding to the air chamber D1.

[0081] The inventors have found through in-depth research that the water distribution method of the existing upflow anaerobic treatment reactor is mainly a one-pipe-multiple-point layout method, where a main water distribution pipe is connected to multiple water distribution branches 10. There is a problem of uneven water distribution, and the sewage cannot be evenly distributed in the reaction bed, affecting the treatment effect. The main reason is that the water pressure in the front section of the water inlet main pipe 1 is large, and the water inflow is large, while the water pressure in the rear section is small, and the water inflow is small. The reaction bed is uneven, and after a long operation time, the front section effect is good, and the rear section effect is poor, the overall removal effect is reduced, and the reactor's anti-impact load is reduced, which affects the reactor's removal effect.

[0082] like Figures 3 to 7 As shown, the present application provides a water distribution pipeline system for an upflow anaerobic treatment reactor, comprising:

[0083] The water inlet main pipe 1 is arranged above the sewage treatment tank body 26 of the upflow anaerobic treatment reactor and is used to transport the sewage to be treated to the sewage treatment tank body 26;

[0084] The water distribution annular pipe 9 is arranged above the sewage treatment tank body 26 and below the water inlet main pipe 1;

[0085] The water distribution branch group includes a plurality of water distribution branches 10 arranged at intervals on the water distribution annular pipe 9, one end of each water distribution branch 10 is connected to the water distribution annular pipe 9, and the other end of each water distribution branch 10 is used to extend into the sewage treatment tank body 26;

[0086] The water inlet manifold 8 has a Y-shaped three-pronged pipe structure, including a water inlet end and two water outlet ends. The water inlet manifold 8 is arranged perpendicular to the plane where the water distribution annular pipe 9 is located. The water inlet end of the water inlet manifold 8 is connected to the water outlet end of the water inlet main pipe 1, one water outlet end of the water inlet manifold 8 is connected to the water distribution annular pipe 9, and the other water outlet end of the water inlet manifold 8 is connected to the water distribution annular pipe 9;

[0087] Among them, the sewage to be treated flows in from the water inlet pipe, passes through the water inlet diverter pipe 8, and flows into the water distribution annular pipe 9 from the two water outlet ends of the water inlet diverter pipe 8, and then flows from the water distribution annular pipe 9 into each water distribution diverter 10 in the water distribution diverter group, so that the sewage to be treated flows into the bottom of the sewage treatment tank body 26.

[0088] The water distribution pipe system of the upflow anaerobic treatment reactor of the present application is designed with a matching design of an inlet main pipe 1, a water distribution annular pipe 9, a water distribution branch group and an inlet branch pipe 8, so that the sewage to be treated first enters the annular pipe after the inlet main pipe 1 enters, and a circulation is formed in the annular pipe, so that the water flow pressure in the pipe is basically consistent, and the water flow pressure of each water distribution branch 10 in the water distribution branch group is closer, so that the water inlet in the UASB reactor is more uniform, and the blockage of the water distribution branch 10 is avoided. It is ensured that the sewage is evenly distributed in the anaerobic sludge bed, and the treatment effect of the sewage to be treated is improved.

[0089] In some optional embodiments of the present application, the water distribution annular pipe 9 is rectangular and has a length direction and a width direction. The water distribution annular pipe 9 has a first long pipe section and a second long pipe section extending in the length direction and arranged opposite to each other. One water outlet end of the water inlet diverter pipe 8 is connected to the first long pipe section, and the other water outlet end of the water inlet diverter pipe 8 is connected to the second long pipe section.

[0090] In some optional embodiments of the present application, the water distribution annular pipe 9 has other annular structures, such as a circular ring, an elliptical ring, etc.

[0091] In some optional embodiments of the present application, the water distribution annular pipe 9 is made of stainless steel, preferably 304 stainless steel, with a pipe diameter of 200 mm. It is made of 4 90° elbows and straight pipes by full welding, and its length is set according to the length of the UASB reactor, generally the same as the length of the reaction zone B of the UASB reactor, and its width is between the water distribution branches 10.

[0092] In some optional embodiments of the present application, a water inlet flowmeter 2 and two water inlet main control valves 3 are installed on the water inlet main pipe 1, and the water inlet flowmeter 2 is arranged between the two water inlet main control valves 3 in the water inlet direction of the water inlet main pipe 1.

[0093] In these embodiments, the water inlet main control valves 3 are arranged on both sides of the water inlet flow meter 2, which can help prevent the treated sewage from flowing into the water inlet flow meter 2 during maintenance, thereby facilitating maintenance.

[0094] In some optional embodiments of the present application, the water distribution pipe system also includes a water inlet backup pipe 25, which is arranged above the sewage treatment tank body 26 of the upflow anaerobic treatment reactor. The water inlet backup pipe 25 is connected to the water inlet main pipe 1 at a first connection, and the first connection in the water inlet direction of the water inlet main pipe 1 is arranged after the two water inlet main control valves 3.

[0095] In these embodiments, when the flow meter or valve on the water inlet main pipe 1 needs to be repaired and troubleshooted, the water inlet spare pipe 25 can be used to transport the sewage to be treated to the sewage treatment tank body 26.

[0096] In some optional embodiments of the present application, a backup water inlet pipeline control valve 251 is provided on the backup water inlet pipeline 25 .

[0097] In some optional embodiments of the present application, the water inlet main pipe 1 is made of stainless steel.

[0098] In some optional embodiments of the present application, the water inlet main pipe 1 is made of 304 stainless steel.

[0099] The water inlet main pipe 1 can also be made of stainless steel pipes of other materials, which have corrosion resistance. The water inlet flowmeter 2 uses a more accurate flowmeter, preferably an electromagnetic flowmeter. The water inlet pipe control valve uses a stainless steel valve, preferably a 304 stainless steel valve, which has corrosion resistance. The water inlet flowmeter 2 and the water inlet pipe control valve should be installed on the top of the UASB pool for the convenience of personnel operation, so as to facilitate later observation, operation, inspection and maintenance.

[0100] In some optional embodiments of the present application, the water distribution annular pipe 9 is made of stainless steel.

[0101] In some optional embodiments of the present application, the water distribution annular pipe 9 is made of 304 stainless steel.

[0102] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0103] The bypass pipe 4 is connected to the water inlet main pipe 1 to form a second connection point. The bypass pipe 4 is used to adjust the bypass water volume to control the inflow of the sewage to be treated.

[0104] In some optional embodiments of the present application, the axial direction of the override pipe 4 is parallel to the length direction, and the override pipe 4 and the override pipe control valve 6 are installed on the override pipe 4.

[0105] In some optional embodiments of the present application, the override pipe 4 is made of stainless steel.

[0106] In some optional embodiments of the present application, the override tube 4 is made of 304 stainless steel.

[0107] The overrun pipe 4 is connected to the water inlet main pipe 1. The overrun pipe flowmeter 5 preferably uses an electromagnetic flowmeter. The overrun pipe 4 and the overrun pipe valve use stainless steel valves, preferably 304 stainless steel valves. The diameter of the overrun pipe 4 is preferably 50mm. After calculating the optimal overrun amount, the overrun water volume is adjusted through the overrun pipe valve.

[0108] In some optional embodiments of the present application, the water inlet diverter pipe 8 has a converging main pipe section 81, a first diverter bend section 82 and a second diverter bend section 83. The pipe axis of the converging main pipe section 81 is perpendicular to the plane where the water distribution annular pipe 9 is located. The first diverter bend and the second diverter bend are symmetrically arranged in the pipe axis of the converging main pipe section 81 and are generally in an inverted U shape. The water inlet end is in the converging main pipe section 81, and the two water outlet ends are respectively in the first diverter bend section 82 and the second diverter bend section 83.

[0109] like Figure 3 and Figure 7 As shown, in some optional embodiments of the present application, in the length direction, the water inlet diverter pipe 8 is located in the area 1 / 6L to 1 / 2L away from the first end of the water distribution annular pipe 9, and L is the length of the water distribution annular pipe 9 in the length direction.

[0110] In some optional embodiments of the present application, the water inlet manifold 8 is located in an area 1 / 3L to 1 / 2L away from the first end of the water distribution annular pipe 9.

[0111] In some optional embodiments of the present application, the first diverter bend section 82 is connected to the first long pipe section to form a third connection, the second diverter bend section is connected to the second long pipe section to form a fourth connection, a first guide plate 181 is provided at the pipe end of the first diverter bend section 82 at the third connection, a first guide plate 181 is provided at the pipe end of the first diverter bend section 82 at the third connection, and a second guide plate 182 is provided at the pipe end of the second diverter bend section 83 at the fourth connection. Both the first guide plate 181 and the second guide plate 182 are curved arc plates spaced apart from the bottom of the water distribution annular pipe 9. In the length direction, the guide direction of the first guide plate 181 is opposite to that of the second guide plate 182 to form a circulation in the water distribution annular pipe 9. Figure 7 As shown, the guiding direction of the first guide plate 181 is set toward the drain pipe 16, and the guiding direction of the second guide plate 182 is the same as the guiding direction of the first guide plate 181, so that the water flow entering the water distribution annular pipe 9 from the water inlet diverter pipe 8 forms a circular flow.

[0112] The curved arc plate can be understood as having an arc-shaped cross section and an arc-shaped contour line in the axial direction. In some examples, it can also be understood as a radial portion of a curved pipe section, and the cross section of the portion has a fan-shaped angle.

[0113] In some optional embodiments of the present application, the distance between the curved arc plate and the bottom of the water distribution annular pipe 9 is 5 cm to 10 cm.

[0114] In some embodiments of the present application, the first guide plate 181 and the second guide plate 182 are welded inside the two pipes, and are 5 cm away from the bottom of the water distribution annular pipe 9. The bottom of the water distribution annular pipe 9 reduces the pipe loss of sewage entering the water distribution annular pipe, and makes the sewage evenly diverted into the water distribution annular pipe 9. The sewage forms a circulation in the water distribution annular pipe 9, making the water distribution more uniform and the reaction more stable.

[0115] In some optional embodiments of the present application, in the length direction, the water inlet shunt pipe 8 is in the area of ​​1 / 6L to 1 / 2L from one end of the water distribution annular pipe 9, and L is the length of the water distribution annular pipe 9 in the length direction. The water inlet shunt pipe 8 is welded by a three-way pipe, a straight pipe, and a flange, but the water inlet shunt pipe 8 is preferably in the area of ​​1 / 3L to 1 / 2L. The water inlet shunt pipe 8 is in the area of ​​1 / 3L to 1 / 2L from one end of the water distribution annular pipe 9, which fully considers the UASB pool body pipeline layout, solves the water pressure and flow rate problems of the water inlet main pipe 1 set on a single side, and fully considers the space occupation problem caused by the centering of the water inlet shunt pipe 8. In addition, it should be noted that the water inlet shunt pipe 8 is in the area of ​​1 / 3L to 1 / 2L from one end of the water distribution annular pipe 9, and the first guide plate 181 and the second guide plate 182 are set to form a circulation more conducive to the formation of circulation. In other areas, the first guide plate 181 and the second guide plate 182 cannot be set, otherwise, the formation of circulation will be affected.

[0116] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0117] The reagent dosing pipe 7 is connected to the converging main pipe section 81 to form a fifth connection point, which is used to add liquid medicine to adjust the pH value of the sewage to be treated in the sewage treatment tank body 26.

[0118] In these embodiments, no reagent dosing pipeline is added to the UASB water inlet main 1, which is not conducive to the pH adjustment of sewage.

[0119] The wastewater produced by Maotai liquor is acidic, and the UASB reactor has requirements for the pH value of the influent. Generally, the pH is adjusted by adding agents such as sodium hydroxide. Most designs now adjust the pH through front-end pretreatment. The water in the workshop fluctuates greatly, and the pH adjustment is unstable, which is not conducive to the water treatment effect of the UASB reactor. The embodiment of the present application is provided with a reagent dosing pipe 7, which is conducive to adjusting the pH of the wastewater produced by Maotai liquor and improving the quality of sewage treatment.

[0120] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0121] The sludge return pipe 11 is used to return the sludge at the bottom of the sewage treatment tank body 26 to the sewage treatment tank body 26. The sewage return pipe includes a sludge inlet end and a sludge outflow end. The sludge outflow end, the water inlet end of the water inlet diverter pipe 8 and the water outlet end of the water inlet main pipe 1 are connected to form a sixth connection point.

[0122] In some embodiments of the present application, the sludge return pipe 11 is connected to the top of the inlet diverter 8, and the sludge return flow rate is adjusted by the sludge return flowmeter 12 and the sludge return pipe valve 13. The sludge and the inlet water are fully mixed through the inlet diverter 8 to increase the inlet sludge concentration, enhance the impact resistance and stability of the UASB reactor, and also increase the treatment capacity for high-concentration wastewater to be treated.

[0123] In some optional embodiments of the present application, a sludge return flow meter 12 and a sludge return pipe valve 13 are provided on the sludge return pipe 11 .

[0124] In some optional embodiments of the present application, the water distribution pipe system further includes:

[0125] The drain pipe 16 is connected to a short pipe section of the water distribution annular pipe 9 and is extended along the length direction, and is used to discharge impurities outward. The water distribution annular pipe 9 has two opposite short pipe sections in the width direction;

[0126] The slag filter bag 14 is arranged at the discharge outlet of the drain pipe 16 .

[0127] In some optional embodiments of the present application, the slag filter net bag 14 is made of stainless steel.

[0128] In some optional embodiments of the present application, the slag filter net bag 14 is made of 304 stainless steel.

[0129] In some optional embodiments of the present application, the depth of the slag filter bag 14 is 30 cm to 40 cm.

[0130] The vent pipe and the water distribution pipe are fully welded. After being welded with the flange, the vent pipe valve is installed. When unblocking, the slag and the like pass through the vent pipe and enter the slag filter bag 14 for filtration, thereby separating the slag and sewage.

[0131] In some optional embodiments of the present application, the water inlet diverter pipe 8 is disposed close to one of the two opposite short pipe sections, and the drain pipe 16 is connected to the other of the two opposite short pipe sections.

[0132] In these embodiments, the wastewater from the production of Maotai-flavor liquor contains lees, bran, etc. Although it is pre-treated in the previous stage, according to the operation of the sewage treatment plant, small debris such as bran will still enter the UASB water inlet main 1 through the regulating tank. When the pipeline runs for a long time, debris, sludge, etc. will accumulate, causing the water distribution pipe to be blocked, which will reduce the water intake and uneven water distribution, thereby causing the UASB to have insufficient rising flow rate and insufficient treated water volume, and short-circuit sewage in the UASB. In the embodiment of the present application, the drain pipe 16 is connected to the water distribution annular pipe 9, which can realize the regular removal of debris accumulated in the water distribution annular pipe 9, ensure the long-term operation quality of the water distribution pipeline system, and ensure the uniformity and stability of water distribution. The drain pipe 16 is provided with a drain pipe valve 15, which is used to control whether the drain pipe 16 is connected to the slag filter bag 14.

[0133] In some optional embodiments of the present application,

[0134] A plurality of water distribution branches 10 are arranged at intervals along the first long pipe section and the second long pipe section.

[0135] The water distribution branch 10 includes an inverted L-shaped lead-out pipe section 101, a connecting transparent pipe section 21 and a vertical dredging pipe section 103. The connecting transparent pipe section 21 and the vertical dredging pipe section 103 are both arranged perpendicular to the water distribution annular pipe 9.

[0136] One end of the inverted L-shaped outlet pipe section 101 is connected to the water distribution annular pipe 9, and the other end of the inverted L-shaped outlet pipe section 101 is connected to the vertical dredging pipe section 103 to form a seventh connection. The inverted L-shaped outlet pipe section 101 is provided with a first water distribution branch control valve 1011;

[0137] In the liquid flow direction of the vertical dredging pipe section 103, a second water distribution branch control valve 104 is provided on the vertical dredging pipe section 103 and is located before the seventh connection point;

[0138] The connecting transparent pipe section 21 is connected to the outflow end of the vertical dredging pipe section 103, and the outflow end of the connecting transparent pipe section 21 is provided with a third water distribution branch control valve 22. The outflow end of the third water distribution branch control valve 22 is provided with a water distribution pipe flange 23, which serves as a pipe connector for connecting the water distribution branch 10 with the water distribution pipe.

[0139] The valve in the water distribution branch 10 is a two-piece stainless steel ball valve, which ensures that the diameter of the pipeline is not affected by the ball valve. The valve size is determined according to the size of the water distribution branch 10. The connecting hose 21 between the water distribution branches 10 is a transparent hose, which is convenient for observing whether the water distribution branch 10 is blocked and whether the flow is normal. The water distribution branch 10 is exposed to sewage corrosion, exposure to the sun and rain for a long time, and this part is made of stainless steel as a whole.

[0140] In some optional embodiments of the present application, the connecting transparent tube section 21 is a hose.

[0141] In some optional embodiments of the present application, the water distribution branch 10 is an overall H-shaped structure.

[0142] In some optional embodiments of the present application, connecting the transparent pipe section 21 in actual processing can facilitate the staff to detect whether there is blockage in the water distribution branch 10, and facilitate timely clearing of the water distribution branch 10 as a whole and the water distribution pipe 19 through the vertical clearing pipe section 103 to ensure uniform water distribution and the quality and efficiency of sewage treatment.

[0143] In some optional embodiments of the present application, the other pipe sections of the water distribution branch 10 except the connecting transparent pipe section 21 are made of stainless steel.

[0144] In some optional embodiments of the present application, the other pipe sections of the water distribution manifold 10 except the connecting transparent pipe section 21 are made of 304 stainless steel.

[0145] In some optional embodiments of the present application, it also includes:

[0146] The water distribution pipe 19 , multiple water distribution pipes 19 are connected to the multiple water distribution branches 10 in a one-to-one correspondence, one end of the water distribution pipe 19 is connected to the second water distribution branch control valve 104 , and the other end of the water distribution pipe 19 is arranged at the bottom of the sewage treatment tank body 26 .

[0147] In some optional embodiments of the present application, the water distribution pipe 19 is made of PE material.

[0148] In some embodiments of the present application, the vertical dredging pipe section 103 is provided with a water distribution branch flushing port 24, which is located at the top of the vertical dredging pipe section 103 and is also the top of the water distribution branch 10. Through this pipe port, gas or an instrument is used to dredge the water distribution pipe 19 to ensure uniform water inflow into the UASB reactor.

[0149] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A water distribution pipe system for an upflow anaerobic treatment reactor, characterized in that: include: The water inlet main is arranged above the sewage treatment tank body of the upflow anaerobic treatment reactor and is used to transport the sewage to be treated to the sewage treatment tank body; A water distribution annular pipe, arranged above the sewage treatment tank and below the water inlet main pipe; A water distribution branch group includes a plurality of water distribution branches arranged at intervals on the water distribution annular pipe, one end of each water distribution branch is connected to the water distribution annular pipe, and the other end of each water distribution branch is used to extend into the sewage treatment tank body; The water inlet branch pipe has a Y-shaped three-pronged pipe structure, including a water inlet end and two water outlet ends. The water inlet branch pipe is arranged perpendicular to the plane where the water distribution annular pipe is located. The water inlet end of the water inlet branch pipe is connected to the water outlet end of the water inlet main pipe, one water outlet end of the water inlet branch pipe is connected to the water distribution annular pipe, and the other water outlet end of the water inlet branch pipe is connected to the water distribution annular pipe; Among them, the sewage to be treated flows into the water inlet pipe, passes through the water inlet diverter pipe, and flows into the water distribution annular pipe from the two water outlet ends of the water inlet diverter pipe, and then flows from the water distribution annular pipe into each water distribution diverter in the water distribution diverter group, so that the sewage to be treated flows into the bottom of the sewage treatment tank body.

2. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 1, characterized in that: The water distribution annular pipe is rectangular and has a length direction and a width direction. The water distribution annular pipe has a first long pipe section and a second long pipe section extending in the length direction and arranged opposite to each other. One water outlet end of the water inlet diverter pipe is connected to the first long pipe section, and the other water outlet end of the water inlet diverter pipe is connected to the second long pipe section.

3. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 1, characterized in that: The water inlet main pipe is equipped with a water inlet flow meter and two water inlet main pipe control valves, and the water inlet flow meter is arranged between the two water inlet main pipe control valves in the water inlet direction of the water inlet main pipe; Preferably, the water distribution pipe system further comprises a water inlet standby pipe, the water inlet standby pipe is arranged above the sewage treatment tank body of the upflow anaerobic treatment reactor, the water inlet standby pipe is connected to the water inlet main pipe at a first connection, and the first connection is arranged after the two water inlet main pipe control valves in the water inlet direction of the water inlet main pipe; Preferably, a water inlet standby pipeline control valve is provided on the water inlet standby pipeline; Preferably, the water inlet pipe is made of stainless steel, preferably, the water inlet pipe is made of 304 stainless steel; Preferably, the water distribution annular pipe is made of stainless steel. Preferably, the water distribution annular pipe is made of 304 stainless steel.

4. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 3, characterized in that: The water distribution pipeline system also includes: A bypass pipe 4 is connected to the water inlet main pipe to form a second connection point, and the bypass pipe is used to adjust the bypass water volume to control the inflow of the sewage to be treated; Preferably, the axial direction of the overrunning pipe is parallel to the length direction, and the overrunning pipe and the overrunning pipe control valve are installed on the overrunning pipe; Preferably, the override tube is made of stainless steel, preferably, the override tube is made of 304 stainless steel.

5. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 2, characterized in that: The water inlet diverter pipe comprises a converging main pipe section, a first diverter bend section and a second diverter bend section. The pipe axis of the converging main pipe section is perpendicular to the plane where the water distribution annular pipe is located. The first diverter bend and the second diverter bend are symmetrically arranged in the pipe axis of the converging main pipe section and are generally in an inverted U shape. The water inlet end is in the converging main pipe section, and the two water outlet ends are respectively in the first diverter bend section and the second diverter bend section.

6. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 5, characterized in that: In the length direction, the water inlet manifold is located in the area 1 / 6L to 1 / 2L away from the first end of the water distribution annular pipe, where L is the length of the water distribution annular pipe in the length direction; Preferably, the water inlet diverter is located in an area 1 / 3L to 1 / 2L away from the first end of the water distribution annular pipe. Further, the first diverter elbow section is connected to the first long pipe section to form a third connection, and the second diverter elbow section is connected to the second long pipe section to form a fourth connection. A first guide plate is provided at the pipe end of the first diverter elbow section at the third connection, a first guide plate is provided at the pipe end of the first diverter elbow section at the third connection, and a second guide plate is provided at the pipe end of the second diverter elbow section at the fourth connection. Both the first guide plate and the second guide plate are curved arc plates spaced apart from the bottom of the water distribution annular pipe. In the length direction, the guide direction of the first guide plate is opposite to the guide direction of the second guide plate to form a circulation in the water distribution annular pipe. Preferably, the distance between the curved arc plate and the bottom of the water distribution annular pipe is 5 cm to 10 cm.

7. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 5, characterized in that: The water distribution pipeline system also includes: The reagent dosing pipe is connected with the converging main pipe section to form a fifth connection point, which is used to add liquid medicine to adjust the pH value of the sewage to be treated in the sewage treatment tank.

8. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 2 or 5, characterized in that: The water distribution pipeline system also includes: A sludge return pipe, which is used to return the sludge at the bottom of the sewage treatment tank to the sewage treatment tank. The sewage return pipe includes a sludge inlet end and a sludge outflow end. The sludge outflow end, the water inlet end of the water inlet shunt pipe and the water outlet end of the water inlet main pipe are connected to form a sixth connection point; Preferably, a sludge return pipe is provided with a sludge return flow meter and a sludge return pipe valve.

9. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 2, characterized in that: The water distribution pipeline system also includes: A drain pipe, connected to a short pipe section of the water distribution annular pipe and extending along the length direction, for discharging impurities outward, the water distribution annular pipe having two opposite short pipe sections in the width direction; The slag filter net bag is arranged at the discharge outlet of the emptying pipe; preferably, the slag filter net bag is made of stainless steel material, preferably, the slag filter net bag is made of 304 stainless steel material; preferably, the depth of the slag filter net bag is 30cm to 40cm; Preferably, the water inlet diverter pipe is disposed close to one of the two opposite short pipe sections, and the drain pipe is connected to the other of the two opposite short pipe sections.

10. The water distribution pipe system of the upflow anaerobic treatment reactor according to claim 2, characterized in that: A plurality of water distribution branches are arranged at intervals along the first long pipe section and the second long pipe section. The water distribution branch pipe comprises an inverted L-shaped lead-out pipe section, a connecting transparent pipe section and a vertical dredging pipe section, and the connecting transparent pipe section and the vertical dredging pipe section are both arranged perpendicular to the water distribution annular pipe; One end of the inverted L-shaped lead-out pipe section is connected to the water distribution annular pipe, and the other end of the vertical dredging pipe section is connected to the vertical dredging pipe section to form a seventh connection point. The inverted L-shaped lead-out pipe section is provided with a first water distribution manifold control valve; In the liquid flow direction of the vertical dredging pipe section, a second water distribution branch control valve is provided on the vertical dredging pipe section and is located before the seventh connection point; The connecting transparent pipe section is connected to the outflow end of the vertical dredging pipe section, and the outflow end of the connecting transparent pipe section is provided with a third water distribution branch control valve; Preferably, the connecting transparent pipe section is a hose; Preferably, the water distribution manifold is an overall H-shaped structure; Preferably, the other pipe sections of the water distribution manifold except the connecting transparent pipe section are made of stainless steel. Preferably, the other pipe sections of the water distribution manifold except the connecting transparent pipe section are made of 304 stainless steel. Preferably, the water distribution pipeline system of the upflow anaerobic treatment reactor further comprises: A water distribution pipe, wherein a plurality of water distribution pipes are connected to the plurality of water distribution branches in a one-to-one correspondence, one end of the water distribution pipe is connected to the second water distribution branch control valve, and the other end of the water distribution pipe is arranged at the bottom of the sewage treatment tank body; Preferably, the water distribution pipe is made of PE material; Preferably, a water distribution branch flushing port is provided at the top of the vertical dredging pipe section.

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