CN211688468U - Improvement type EGSB waste water treatment equipment - Google Patents

Abstract

The utility model discloses an improved EGSB wastewater treatment device, which comprises a tank body; the bottom of the inner cavity of the tank body is provided with an annular water inlet and distribution pipe; the top of the inner cavity of the tank body is fixedly connected with an effluent weir, the top of the tank body is provided with a gas-water separator, and the inner cavity of the tank body is provided with a three-phase separator component below the effluent weir; the middle part of the left side of the gas-water separator is connected with a first annular return pipe, and the outer side wall of the gas-water separator is connected with a riser assembly; and a water outlet pipe assembly is arranged on the top surface of the left side wall of the tank body. The expansion of the sludge of the utility model is not limited by the rising speed any more, and the sludge leakage phenomenon does not occur when the equipment is discharged; meanwhile, the sludge concentration of the inlet water and the contact can be ensured, the sludge concentration is not limited by the height-diameter ratio and the reflux amount, the annular water distribution structure is simpler, the used materials are saved, the water distribution is more uniform, and no blockage exists.

Description

Improvement type EGSB waste water treatment equipment

Technical Field

The utility model relates to an environment-friendly device technical field especially relates to an industrial waste water, sanitary wastewater treatment device specifically are improvement type EGSB waste water treatment equipment.

Background

EGSB-anaerobic granular sludge expanded bed reactor is a device for treating high-concentration organic wastewater. The method is widely applied to wastewater treatment in industries such as pharmacy, breeding, slaughtering, printing and dyeing, papermaking, food processing and the like, and has the advantages of wide application range, stable treatment effect and low operation cost; the EGSB is an anaerobic reactor which is formed by combining a sludge zone at the bottom and a gas-liquid-solid three-phase separation zone at the middle upper part into a whole, enables waste water to have higher ascending flow velocity in the reactor through backflow and structural design and enables granular sludge in the reactor to be in an expanded state.

Sludge expansion in conventional reactors is achieved by the upflow velocity of water, as indicated in "EGSB wastewater treatment engineering specifications": the upflow speed is preferably 3 m/h-7 m/h, in order to achieve the speed, an external circulation or internal circulation technology is adopted, and meanwhile, the height-diameter ratio of the EGSB is controlled to be 3-8; due to the limitation of the upflow speed, the surface load of the effluent at the upper part of the three-phase separator is higher, and the sludge running phenomenon occurs during the running; meanwhile, the traditional EGSB water distribution adopts a one-pipe porous water distribution mode or a multi-pipe water distribution mode, and the water distribution uniformity is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improvement type EGSB waste water treatment equipment to the problem of the mud phenomenon appears running in the equal higher, the water distribution homogeneity of the play water surface load that provides among the solution above-mentioned background art relatively poor, the equipment operation.

In order to achieve the above object, the utility model provides a following technical scheme:

an improved EGSB wastewater treatment device comprises a tank body; an annular water inlet and distribution pipe is arranged at the bottom of the inner cavity of the tank body, and a water inlet of the annular water inlet and distribution pipe extends out of the right bottom surface of the tank body; the top of the inner cavity of the tank body is fixedly connected with an effluent weir, the top of the tank body is provided with a gas-water separator, and the inner cavity of the tank body is provided with a three-phase separator component below the effluent weir; the middle part of the left side of the gas-water separator is connected with a first annular return pipe, the middle part of the right side of the gas-water separator is connected with a second annular return pipe, and the pipe orifice ends of the first annular return pipe and the second annular return pipe are both connected to the bottom of the inner cavity of the tank body; the outer side wall of the gas-water separator is connected with an ascending pipe assembly, and the bottom end of the ascending pipe assembly extends into the inner cavity of the tank body; the water outlet pipe assembly is installed on the top surface of the left side wall of the tank body, a right side pipe orifice of the water outlet pipe assembly is communicated with the water outlet weir through a pipeline, and a top pipe orifice of the water outlet pipe assembly extends into the top surface of the inner cavity of the tank body.

Preferably, the three-phase separator assembly comprises a first three-phase separator, a second three-phase separator, a third three-phase separator, a fourth three-phase separator, an upper baffle and a lower baffle; the upper baffle and the lower baffle are respectively and transversely connected to the top of the inner cavity of the tank body, and the upper baffle is positioned at the top of the lower baffle; the first three-phase separator, the second three-phase separator, the third three-phase separator and the fourth three-phase separator are respectively arranged between the upper baffle and the lower baffle, and a three-phase separation area is formed between the upper baffle and the lower baffle.

Preferably, the riser assembly comprises a first riser, a second riser, a third riser, a fourth riser, a fifth riser and a storage tank flame arrestor; the pipe end of the second ascending pipe is communicated with the outer side wall of the gas-water separator, and the other pipe end of the second ascending pipe is communicated with the storage tank flame arrester; a gate valve is arranged on the storage tank flame arrester, the bottom end of the storage tank flame arrester is communicated with a third ascending pipe through a four-way pipe, a pipe orifice on one side of the four-way pipe is communicated with the first ascending pipe, a pipe orifice on the other side of the four-way pipe is communicated with a fourth ascending pipe, and the fourth ascending pipe is communicated with a fifth ascending pipe; the bottom end of the first riser, the bottom end of the third riser and the bottom end of the fifth riser respectively extend into the three-phase separator assembly; and the top of the pipe section of the fifth ascending pipe is connected with a barometer.

Preferably, the top of the three-phase separator assembly is provided with a separator vent connected to the third riser.

Preferably, the top of the effluent weir is provided with an upper-layer vent pipe, the top end of the upper-layer vent pipe extends out of the top of the tank body, and a pipe section of the upper-layer vent pipe is connected with a first butterfly valve above the tank body.

Preferably, the pipe orifice ends of the first annular return pipe and the second annular return pipe are both positioned below the three-phase separator assembly, and sampling pipes are uniformly arranged between the pipe sections of the return pipes of the first annular return pipe and the second annular return pipe and the bottom of the tank body.

Preferably, the bottom end of the gas-water separator is connected with an exhaust pipe, and the pipe end of the exhaust pipe is connected with an inverted L-shaped downcomer; the top of the pipe section of the exhaust pipe is connected with a second butterfly valve; and the left side of the pipe section of the downcomer is connected with a third butterfly valve.

Preferably, the top surface of the left side wall of the tank body is provided with a first inlet hole, and the top surface of the right side wall of the tank body is provided with a second inlet hole; the outer side wall of the tank body is provided with a heat insulation layer, and the inner cavity of the tank body is of a hollow structure; the right side wall of the tank body is connected with a stabilizing ring for the annular water inlet and distribution pipe to pass through, and the stabilizing ring is used for improving the connection stability of the annular water inlet and distribution pipe; the top of the tank body is connected with a platform cover plate, and the top of the platform cover plate is provided with an observation port.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model forms rotational flow in the equipment through the annular water inlet and distribution pipe, and the expansion of the sludge is not limited by the rising speed any more; meanwhile, an internal circulation technology is adopted, and the backflow water also adopts the combined force of the annular backflow pipe and the annular water inlet and distribution pipe to form a rotary driving force in the equipment, so that the discharged water has no mud leakage phenomenon; after the wastewater forms rotational flow, the sludge firstly flows back by utilizing the return pipe under the action of centripetal force, and the full expansion of the sludge from the bottom to the height of the return pipe is achieved; the sludge concentration of inlet water and contact is ensured, the sludge concentration is not limited by a height-diameter ratio and a reflux amount, the annular water distribution structure is simpler, materials are saved, the water distribution is more uniform, and no blockage exists.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is an elevation view of the cross-sectional structure of FIG. 1A-A according to the present invention;

FIG. 3 is an elevation view of the structure of FIG. 1, as seen from the left side, in accordance with the present invention;

FIG. 4 is a right side elevation view of structure E of FIG. 1 in accordance with the present invention;

FIG. 5 is a left side view of the structure of the present invention;

fig. 6 is a top view of the structure of the cross section B-B of fig. 3 according to the present invention;

fig. 7 is a top view of the structure of the cross section C-C of fig. 4 according to the present invention;

fig. 8 is a structural plan view of the cross section D-D of fig. 2 according to the present invention;

fig. 9 is a structural plan view of the cross section I-I of fig. 2 according to the present invention;

fig. 10 is a structural elevation view of the cross-section Y-Y of fig. 8 in accordance with the present invention;

fig. 11 is an enlarged schematic view of fig. 5 at the position ii according to the present invention;

FIG. 12 is an enlarged view of the structure of FIG. 5;

fig. 13 is an enlarged schematic view of the structure of the outlet pipe assembly of the present invention.

In the figure: 1 tank, 2 annular water inlet distribution pipes, 3 a three-phase separator, 4 lower baffles, 5 a two-phase separator, 6 a first riser, 7 a three-phase separator, 8 upper baffles, 9 a four-phase separator, 10 a water outlet weir, 11 a heat preservation layer, 12 a second riser, 13 a storage tank flame arrester, 14 a third riser, 15 a fourth riser, 16 a fifth riser, 17 a separator blow-down pipe, 18 a gate valve, 19 an upper layer blow-down pipe, 20 a first butterfly valve, 21 a second butterfly valve, 22 a gas-water separator, 23 a gas pressure gauge, 24 a water outlet pipe assembly, 25 an observation port, 26 a first inlet hole, 27 a third butterfly valve, 28 an exhaust pipe, 29 a down pipe, 30 a first annular return pipe, 31 a second annular return pipe, 32 a second inlet hole, 33 a platform cover plate, 34 a sampling pipe and 35 a stabilizing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-13, the present invention provides a technical solution: an improved EGSB wastewater treatment device comprises a tank body 1; the bottom of the inner cavity of the tank body 1 is provided with an annular water inlet and distribution pipe 2, and the water inlet of the annular water inlet and distribution pipe 2 extends out of the right bottom surface of the tank body 1; the top of the inner cavity of the tank body 1 is fixedly connected with an effluent weir 10, the top of the effluent weir 10 is provided with an upper-layer vent pipe 19, the top end of the upper-layer vent pipe 19 extends out of the top of the tank body 1, and the pipe section of the upper-layer vent pipe 19 is positioned above the tank body 1 and is connected with a first butterfly valve 20; the top of the tank body 1 is provided with a gas-water separator 22, and the inner cavity of the tank body 1 is provided with a three-phase separator component below the effluent weir 10; the middle part of the left side of the gas-water separator 22 is connected with a first annular return pipe 30, the middle part of the right side of the gas-water separator 22 is connected with a second annular return pipe 31, and the pipe orifice ends of the first annular return pipe 30 and the second annular return pipe 31 are both connected to the bottom of the inner cavity of the tank body 1; the pipe orifice ends of the first annular return pipe 30 and the second annular return pipe 31 are both positioned below the three-phase separator assembly, and sampling pipes 34 are uniformly arranged between the pipe sections of the return pipes of the first annular return pipe 30 and the second annular return pipe 31 and the bottom of the tank body 1; the outer side wall of the gas-water separator 22 is connected with an ascending pipe assembly, and the bottom end of the ascending pipe assembly extends into the inner cavity of the tank body 1; the top surface of the left side wall of the tank body 1 is provided with a water outlet pipe component 24, the right side pipe orifice of the water outlet pipe component 24 is communicated with the water outlet weir 10 through a pipeline, and the top pipe orifice of the water outlet pipe component 24 extends into the top surface of the inner cavity of the tank body 1; the separated water is subjected to mud-water separation in a first three-phase separator 3, a second three-phase separator 5, a third three-phase separator 7 and a fourth three-phase separator 9 and is discharged through a water outlet weir 10.

Referring to fig. 1-4 and 5-9, the three-phase separator assembly includes a first three-phase separator 3, a second three-phase separator 5, a third three-phase separator 7, a fourth three-phase separator 9, an upper baffle 8 and a lower baffle 4; the upper baffle 8 and the lower baffle 4 are respectively transversely connected to the top of the inner cavity of the tank body 1, and the upper baffle 8 is positioned at the top of the lower baffle 4; the first three-phase separator 3, the second three-phase separator 5, the third three-phase separator 7 and the fourth three-phase separator 9 are respectively arranged between the upper baffle 8 and the lower baffle 4, and a three-phase separation area is formed between the upper baffle 8 and the lower baffle 4; the riser assembly comprises a first riser 6, a second riser 12, a third riser 14, a fourth riser 15, a fifth riser 16 and a storage tank flame arrestor 13; the first riser 6, the second riser 12, the third riser 14, the fourth riser 15, the fifth riser 16 and the storage tank flame arrester 13 are connected to form an integrated structure, so that the methane separated by the three-phase separator assembly can be rapidly conveyed into the gas-water separator 22; the pipe end of the second ascending pipe 12 is communicated with the outer side wall of the gas-water separator 22, and the other pipe end of the second ascending pipe 12 is communicated with the storage tank flame arrester 13; a gate valve 18 is arranged on the storage tank flame arrester 13, the bottom end of the storage tank flame arrester 13 is communicated with a third riser 14 through a four-way pipe, a pipe orifice at one side of the four-way pipe is communicated with the first riser 6, a pipe orifice at the other side of the four-way pipe is communicated with a fourth riser 15, and the fourth riser 15 is communicated with a fifth riser 16; the bottom end of the first riser 6, the bottom end of the third riser 14 and the bottom end of the fifth riser 16 extend into the three-phase separator assembly respectively; the top of the pipe section of the fifth ascending pipe 16 is connected with an air pressure gauge 23; the top of the three-phase separator assembly is provided with a separator vent 17, and the separator vent 17 is connected with the third riser 14; the bottom end of the gas-water separator 22 is connected with an exhaust pipe 28, and the pipe end of the exhaust pipe 28 is connected with an inverted L-shaped downcomer 29; the top of the pipe section of the exhaust pipe 28 is connected with a second butterfly valve 21; the left side of the pipe section of the downcomer 29 is connected with a third butterfly valve 27; the storage tank flame arrester 13 is designed and manufactured according to the principle that flame extinguishes due to heat loss when the flame passes through a narrow hole of a heat conductor, a flame arresting layer of the flame arrester is in a gravel type, a metal wire mesh type or a corrugated type, and the storage tank flame arrester 13 is in any one of GZW-I type, ZHQ-S type and TQM type.

The first butterfly valve 20, the second butterfly valve 21 and the third butterfly valve 27 in this embodiment are all of DN200 type, DN80 type, and DN50 type, and the butterfly valves are also called flap valves, and are adjusting valves with simple structures, and a butterfly valve that can be used for on-off control of low-pressure pipeline media is a valve that is opened and closed by rotating around a valve shaft, where a closing member, namely a flap/butterfly plate, is a disk.

The gate valve 18 in this embodiment is a LT942X type gate valve; the gate valve 18 can only be fully opened and fully closed, and cannot be adjusted and throttled; the gate valve 18 is sealed by the contact of a valve seat and a gate plate, and a sealing surface is usually subjected to surfacing welding of metal materials to increase the wear resistance, such as surfacing welding of 1Cr13, STL6, stainless steel and the like; the gate plate includes a rigid gate plate and an elastic gate plate, and the gate valve 18 is divided into a rigid gate valve and an elastic gate valve according to the difference of the gate plates.

In the first three-phase separator 3, the second three-phase separator 5, the third three-phase separator 7 and the fourth three-phase separator 9 of the present embodiment, the three-phase separators all adopt a vertical 326 type separator of a kanji brand; the three-phase separator is mainly used for an up-flow anaerobic sludge bed reactor UASB in biological wastewater treatment to separate digestion gas, digestion liquid and sludge particles. The digestion gas is led out from the top of the reactor; the sludge particles automatically slide down and settle to a sludge bed at the bottom of the reactor; discharging the digestive juice from the clarification zone; the gas-water separator 22 of the embodiment adopts a ZCWF 40/1 type separator, and the design pressure is as follows: 1.0/1.6/2.5MPa, hydrostatic test pressure: 1.25/2.0/3.0 MPa, pressure loss: not more than 0.002Mpa, design temperature: 300 ℃, corrosion margin: 1mm, separation efficiency: 99%, separating particles: not less than 5 μm, and carbon steel or stainless steel.

Referring to fig. 1 and 2, a first inlet hole 26 is formed on the top surface of the left side wall of the can body 1, and a second inlet hole 32 is formed on the top surface of the right side wall of the can body 1; the outer side wall of the tank body 1 is provided with a heat-insulating layer 11, and the inner cavity of the tank body 1 is of a hollow structure; the right side wall of the tank body 1 is connected with a stabilizing ring 35 for the annular water inlet and distribution pipe 2 to pass through, and the stabilizing ring 35 is used for increasing the connection stability of the annular water inlet and distribution pipe 2; the top end of the tank body 1 is connected with a platform cover plate 33, and the top of the platform cover plate 33 is provided with a viewing port 25.

The working principle is as follows: waste water enters the middle part of the bottom of an inner cavity of a tank body 1 through an annular water inlet distribution pipe 2, enters the bottom of the inner cavity of the tank body 1 through a tangential water inlet on an annular pipe of the annular water inlet distribution pipe 2, is mixed with sludge in a sludge expansion area in the tank body and is rotated and ascended after being treated, at the moment, the waste water enters a first three-phase separator 3, a second three-phase separator 5, a third three-phase separator 7 and a fourth three-phase separator 9 of a three-phase separator assembly for separation, the separated waste water is separated again through a gas-water separator 22, a first annular backflow pipe 30 and a second annular backflow pipe 31 return the sludge and part of water, and an ISG vertical pipeline centrifugal pump is adopted through an external circulating pump; the circulating pump is pressurized and flows back to the bottom in the tank body 1 and synchronously pushes the circulating pump and the water and the sludge in the tank body 1 to ensure that the muddy water rotates and rises, and a sludge expansion area is formed between the bottom and the return pipe; after biogas generated by wastewater in the tank body 1 under the chemical action is separated by the first three-phase separator 3, the second three-phase separator 5, the third three-phase separator 7 and the fourth three-phase separator 9, the biogas rises to the gas-water separator 22 and is transmitted and discharged through the exhaust pipe 28 and the downcomer 29; the separated water obtained by the gas-water separator 22 flows back through the first annular return pipe 30 and the second annular return pipe 31, then enters the water and sludge of the first three-phase separator 3, the second three-phase separator 5, the third three-phase separator 7 and the fourth three-phase separator 9, the separated sludge falls back, and the clear water rises to the water outlet weir 10 and is discharged by the water outlet pipe assembly 24; wherein the sampling pipe 34 is used for acquiring a sludge sample in the tank body 1 at any time so as to monitor the sludge expansion condition and the sludge amount in the tank body 1.

When the improved EGSB wastewater treatment equipment is used, wastewater enters the tank body 1 through the annular water inlet and distribution pipe 2, the annular water inlet and distribution pipe 2 enters from a tangential water inlet on a ring pipe, backflow sludge and backflow water flow back through a tangential backflow port on the annular water inlet and distribution pipe 2 at the bottom, and the inflow water enters the backflow water to form tangential push, so that the water in the tank body 1 rotates and rises, and simultaneously drives the sludge in the tank body 1 to expand; the biogas generated by anaerobic reaction is separated by a first three-phase separator 3, a second three-phase separator 5, a third three-phase separator 7 and a fourth three-phase separator 9, and then enters a gas-water separator 22, the separated water flows back into the tank body 1 through a first annular return pipe 30 and a second annular return pipe 31, and the biogas is discharged through an exhaust pipe 28 and a downcomer 29; the separated water is subjected to mud-water separation again in the first three-phase separator 3, the second three-phase separator 5, the third three-phase separator 7 and the fourth three-phase separator 9 and is discharged through a water outlet weir 10; because the water in the tank body 1 is rotated and raised, the rotating speed is far greater than the raising speed, the sludge expansion does not depend on the raising flow speed of the water, and in the example, the full expansion state can be achieved below the return pipe when the sludge sedimentation ratio SV30 is 30 percent; the backflow and annular water inlet and distribution pipes 2 are respectively and independently arranged, so that the stable flow rate of a backflow port under the condition of no water inlet can be ensured, and the driving force is ensured; therefore, the improved EGSB wastewater treatment equipment is not limited by the height-diameter ratio and the ascending flow rate; the three-phase separation area, the sedimentation area and the effluent above the return pipe have better separation effect due to lower rising speed, low surface load of the effluent and no mud in the effluent, and no sedimentation facility is needed to be additionally arranged.

The improved EGSB waste water treatment equipment of the utility model has the advantages that the annular water inlet and distribution pipe 2 of the equipment forms rotational flow in the equipment by utilizing the directional water outlets distributed on the annular water inlet and distribution pipe 2, and the expansion of sludge is not limited by the rising speed any more; meanwhile, by adopting an internal circulation technology, the return water also adopts a first annular return pipe 30 and a second annular return pipe 31 which are annular, the return pipes and the annular water inlet and distribution pipe 2 are combined to form a rotary driving force in the equipment, the surface load of the outlet water is only related to the water inlet amount and is unrelated to the circulating water amount, the surface load of the outlet water is the lowest, and the outlet water has no sludge leakage phenomenon; after the rotational flow is formed, the sludge is firstly concentrated in the middle of the inner cavity of the tank body 1 under the action of centripetal force to form a conical branch part, the first annular return pipe 30 and the second annular return pipe 31 can realize that the sludge firstly flows back, and the full expansion of the sludge from the bottom to the height of the return pipes is achieved; the annular water inlet and distribution pipe 2 is positioned at the inner sides of the first annular return pipe 30 and the second annular return pipe 31, so that the concentration of sludge in water inlet and contact is ensured; therefore, the design of the EGSB is not limited by the height-diameter ratio and the reflux amount any more; the annular water distribution structure is simpler, the material consumption is more saved, the water distribution is more uniform, and no blockage exists; thereby solving the problems of higher water outlet surface load, poorer water distribution uniformity and mud leakage in the operation of the existing wastewater treatment equipment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An improved EGSB wastewater treatment device comprises a tank body (1); the method is characterized in that: the bottom of the inner cavity of the tank body (1) is provided with an annular water inlet and distribution pipe (2), and a water inlet of the annular water inlet and distribution pipe (2) extends out of the bottom surface of the right side of the tank body (1); the top of the inner cavity of the tank body (1) is fixedly connected with an effluent weir (10), the top of the tank body (1) is provided with a gas-water separator (22), and a three-phase separator component is arranged in the inner cavity of the tank body (1) below the effluent weir (10); the middle part of the left side of the gas-water separator (22) is connected with a first annular return pipe (30), the middle part of the right side of the gas-water separator (22) is connected with a second annular return pipe (31), and the pipe orifice ends of the first annular return pipe (30) and the second annular return pipe (31) are connected to the bottom of the inner cavity of the tank body (1); the outer side wall of the gas-water separator (22) is connected with an ascending pipe assembly, and the bottom end of the ascending pipe assembly extends into the inner cavity of the tank body (1); the water outlet pipe assembly (24) is installed on the top surface of the left side wall of the tank body (1), a right side pipe orifice of the water outlet pipe assembly (24) is communicated with the water outlet weir (10) through a pipeline, and a top pipe orifice of the water outlet pipe assembly (24) extends into the top surface of the inner cavity of the tank body (1).

2. The improved EGSB waste water treatment equipment as claimed in claim 1, wherein: the three-phase separator assembly comprises a first three-phase separator (3), a second three-phase separator (5), a third three-phase separator (7), a fourth three-phase separator (9), an upper baffle (8) and a lower baffle (4); the upper baffle (8) and the lower baffle (4) are respectively transversely connected to the top of the inner cavity of the tank body (1), and the upper baffle (8) is positioned at the top of the lower baffle (4); no. one three-phase separator (3), No. two three-phase separator (5), No. three-phase separator (7), No. four three-phase separator (9) are installed respectively at last baffle (8) under with between baffle (4), go up baffle (8) and form the three-phase separation region down between baffle (4).

3. The improved EGSB waste water treatment equipment as claimed in claim 1, wherein: the riser assembly comprises a first riser (6), a second riser (12), a third riser (14), a fourth riser (15), a fifth riser (16) and a storage tank flame arrester (13); the pipe end of the second ascending pipe (12) is communicated with the outer side wall of the gas-water separator (22), and the other pipe end of the second ascending pipe (12) is communicated with the storage tank flame arrester (13); a gate valve (18) is arranged on the storage tank flame arrester (13), the bottom end of the storage tank flame arrester (13) is communicated with a third ascending pipe (14) through a four-way pipe, a pipe orifice at one side of the four-way pipe is communicated with the first ascending pipe (6), a pipe orifice at the other side of the four-way pipe is communicated with a fourth ascending pipe (15), and the fourth ascending pipe (15) is communicated with a fifth ascending pipe (16); the bottom end of the first ascending pipe (6), the bottom end of the third ascending pipe (14) and the bottom end of the fifth ascending pipe (16) respectively extend into the three-phase separator assembly; and the top of the pipe section of the fifth ascending pipe (16) is connected with an air pressure gauge (23).

4. The improved EGSB waste water treatment equipment as claimed in claim 1, wherein: the top of the three-phase separator assembly is provided with a separator vent (17), which separator vent (17) is connected to a third riser (14).

5. The improved EGSB waste water treatment equipment as claimed in claim 1, wherein: an upper-layer vent pipe (19) is arranged at the top of the water outlet weir (10), the top end of the upper-layer vent pipe (19) extends out of the top of the tank body (1), and a pipe section of the upper-layer vent pipe (19) is connected with a first butterfly valve (20) above the tank body (1).

6. The improved EGSB waste water treatment equipment as claimed in claim 1, wherein: the pipe orifice ends of the first annular return pipe (30) and the second annular return pipe (31) are both positioned below the three-phase separator assembly, and sampling pipes (34) are uniformly arranged between the pipe sections of the return pipes of the first annular return pipe (30) and the second annular return pipe (31) and the bottom of the tank body (1).

7. The improved EGSB waste water treatment equipment as claimed in claim 1, wherein: the bottom end of the gas-water separator (22) is connected with an exhaust pipe (28), and the pipe end of the exhaust pipe (28) is connected with an inverted L-shaped downcomer (29); the top of the pipe section of the exhaust pipe (28) is connected with a second butterfly valve (21); and the left side of the pipe section of the descending pipe (29) is connected with a third butterfly valve (27).

8. The improved EGSB waste water treatment equipment as claimed in claim 1, wherein: a first inlet hole (26) is formed in the top surface of the left side wall of the tank body (1), and a second inlet hole (32) is formed in the top surface of the right side wall of the tank body (1); the outer side wall of the tank body (1) is provided with a heat insulation layer (11), and the inner cavity of the tank body (1) is of a hollow structure; the right side wall of the tank body (1) is connected with a stabilizing ring (35) for the annular water inlet and distribution pipe (2) to pass through, and the stabilizing ring (35) is used for improving the connection stability of the annular water inlet and distribution pipe (2); the top of the tank body (1) is connected with a platform cover plate (33), and the top of the platform cover plate (33) is provided with an observation port (25).

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