CN213623473U - External circulation granular sludge anaerobic reactor system with large height-diameter ratio - Google Patents

Abstract

The utility model discloses a big height-diameter ratio granular sludge anaerobic reactor system of extrinsic cycle relates to waste water anaerobic treatment technical field. The utility model discloses a homogeneity surge tank, anaerobic reactor system go out water distribution pipe, chemicals feeder channel, jet-flow hybrid system, one-level DUO type all standing multichannel three-phase separator, second grade DUO type all standing multichannel three-phase separator, anaerobism go out the water collecting pipe, "pot form" pulse water distribution system, double-circuit pulse feed system, first anaerobic reaction district, second anaerobic reaction district, third anaerobic reaction district, fourth anaerobic reaction district. The utility model avoids the blockage problem of the water distribution system in the treatment of the papermaking wastewater containing high-concentration calcium ions, and simultaneously can avoid the generation of strong rotational flow in the 'pot-shaped' water distribution system and prevent the blockage of the water distribution slit; compared with the comparative analysis of the IC internal circulation anaerobic reactor, the method has more stable and efficient treatment effect and wide application prospect.

Description

External circulation granular sludge anaerobic reactor system with large height-diameter ratio

Technical Field

The utility model belongs to the technical field of waste water anaerobic treatment, especially, relate to a big height-diameter ratio granular sludge anaerobic reactor system of extrinsic cycle, extensively be applicable to the high concentration organic waste water anaerobic treatment field that cocoa formed good anaerobic granular sludge, like food processing waste water, making wine waste water, pulping and papermaking waste water, citric acid waste water, biological fermentation pharmacy waste water, certain chemical industry class waste water etc..

Background

Anaerobic treatment processes are widely used in industrial wastewater, and the anaerobic processes in the market are mainly classified into low-speed anaerobic reactors (low volume loading rate) mainly including UASB (upflow anaerobic sludge blanket), CSTR (continuous stirred anaerobic reactor), ABR (baffled plate anaerobic reactor), and the like, and high-speed anaerobic reactors (high volume loading rate) mainly including EGSB (granular sludge expanded bed), IC (internal circulation anaerobic reactor), and similar types of derivative anaerobic reactors. From the application and research conditions of domestic anaerobic processes, the IC internal circulation anaerobic reactor is a high-speed anaerobic reactor which is most researched and applied by domestic environmental protection enterprises and scientific research institutions. The IC anaerobic reactor technology is originated from an environmental protection technology company in the Netherlands, is essentially two superimposed UASB anaerobic reactors, and has the greatest characteristic of high volume load rate and capability of being developed to high altitude so as to achieve the purpose of saving occupied area, thereby meeting the requirement of saving occupied area of a sewage treatment plant due to the shortage of occupied area in part of European countries. The IC anaerobic reactor technology has attracted great interest of domestic environmental protection enterprises and scientific research institutions after being introduced into the Chinese market twenty years ago, and more than 95 percent of domestic anaerobic technology suppliers can provide the IC internal circulation anaerobic reactor technology.

The main components of the IC internal circulation anaerobic reactor comprise: an inverted umbrella-shaped slit water distribution system, a first layer inverted triangular three-phase separator, a second layer inverted triangular three-phase separator, a mixed liquid/biogas riser, a top rotational flow biogas degassing tank, a top waste gas collecting cover plate and a water outlet circulation distribution riser. However, the IC internal circulation anaerobic reactor is a vertical stack of two UASBs, and although the reactor has very good performance in terms of high volume load rate, high-efficiency mixing effect caused by internal circulation at the bottom, and the like, the performance in terms of keeping anaerobic sludge from running off is not satisfactory, and especially when the particle size of anaerobic granular sludge is small due to the characteristics of wastewater, the anaerobic sludge tends to run off more seriously. The following is a summary of the major problems that have existed during the use of IC internal circulation anaerobic reactors for many years:

1. in the paper making industry with the widest application scene of the IC internal circulation anaerobic reactor, because the concentration of calcium ions in waste water is high due to water saving in the paper making industry in recent years, particle sludge calcification is caused, an ascending pipe and a descending pipe in the anaerobic reactor and an inverted umbrella-shaped slit water distribution system are seriously scaled and blocked, and the efficiency of the IC anaerobic reactor is reduced, which is the biggest problem in anaerobic treatment of waste water in the industry;

2. the rising flow rate of liquid and methane in the IC internal circulation anaerobic reactor is too high (up to more than 20 m/h), the granular sludge in the reactor is completely retained in the anaerobic reactor by the weight of the granular sludge, and the anaerobic granular sludge with smaller granules formed initially is usually flushed out of the anaerobic reactor. When the rate of generating large-particle anaerobic granular sludge in the anaerobic treatment process of wastewater is less than the loss rate of small-particle anaerobic granular sludge, the total amount of anaerobic granular sludge in the IC internal circulation anaerobic reactor is reduced, so that the treatment efficiency of the IC anaerobic internal circulation anaerobic reactor is reduced;

3. the top of the IC internal circulation anaerobic reactor adopts the effluent collection mode of the overflow weir conventionally, and when the levelness of the effluent weir plate is adjusted, the weir plate is fixed and loosened in the long-time running process, the uneven phenomenon of effluent can be caused.

4. The conventional IC internal circulation anaerobic reactor adopts a normal pressure mode, the top of the conventional IC internal circulation anaerobic reactor is communicated with the atmosphere, and waste gas escaping from anaerobic effluent is collected through a top cover plate and needs to be treated;

5. the IC internal circulation anaerobic reactor is lack of a methane storage and pressure stabilizing device system, and a methane pressure stabilizing cabinet is required to be arranged, so that the risk point of methane safe utilization is increased.

Mainly to the problem that IC high-speed anaerobic Reactor operation process appears for many years, the utility model discloses under the prerequisite that remains IC anaerobic Reactor big height-diameter ratio, high volume load rate, provide a neotype high-speed anaerobic Reactor of extrinsic cycle (ECSB DUO, DUO type External circulation slit Bed Reactor) system and device (hereinafter for short ECSB DUO anaerobic Reactor). The novel anaerobic reactor system consists of two tank bodies, wherein one tank body is a homogeneous adjusting tank for adjusting the quality of inlet water and utilizing the alkalinity of anaerobic backflow water, and the other tank body is an ECSB DUO anaerobic reactor at the core. Compared with an IC internal circulation anaerobic reactor, the novel ECSB DUO anaerobic reactor is characterized in that: (1) the characteristics of large height-diameter ratio and high volume load rate of the IC internal circulation anaerobic reactor are reserved; (2) a novel pot-shaped pulse water distribution system is adopted to replace an IC inverse umbrella-shaped narrow-slit water distribution system; (3) a novel DUO type multi-channel three-phase separator is adopted to replace an inverted triangular methane collection module; (4) a submerged effluent collecting pipe is adopted to replace a zigzag overflow weir with top overflow; (5) adopts a completely closed anaerobic reactor design.

SUMMERY OF THE UTILITY MODEL

The utility model provides an extrinsic cycle is granule sludge anaerobic reactor system than big height-diameter ratio has solved above problem.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to an external circulation large height-diameter ratio granular sludge anaerobic reactor system, which comprises a homogenization adjusting tank, an anaerobic reactor system water outlet distribution pipe arranged at the upper side part of the homogenization adjusting tank, a chemical feeding pipeline arranged at the side part of the homogenization adjusting tank, and a jet mixing system arranged at the lower side part of the homogenization adjusting tank, the device comprises a first-stage DUO type full-coverage multi-channel three-phase separator arranged in an anaerobic reactor, a second-stage DUO type full-coverage multi-channel three-phase separator arranged above the first-stage DUO type full-coverage multi-channel three-phase separator, an anaerobic effluent collecting pipe arranged above the second-stage DUO type full-coverage multi-channel three-phase separator and positioned below the liquid level in the anaerobic reactor, a pot-shaped pulse water distribution system arranged at the bottom in the anaerobic reactor, and a double-path pulse feeding system connected between the pot-shaped pulse water distribution system and the bottom of a homogenizing adjusting tank; the structure of the primary DUO type full-coverage multi-channel three-phase separator is the same as that of the secondary DUO type full-coverage multi-channel three-phase separator;

the top of the homogenizing adjusting tank is provided with a methane discharging and utilizing outlet which is communicated with a methane chamber at the upper part of the homogenizing adjusting tank at the top inside the homogenizing adjusting tank;

the top of the anaerobic reactor is positioned above the liquid level in the anaerobic reactor and is communicated with the top wall of the anaerobic reactor through a first communication pipe; the anaerobic effluent collecting pipe is connected with the effluent distributing pipe of the anaerobic reactor system through an anaerobic effluent conveying pipe arranged above the liquid level of the homogenizing adjusting tank; the first-stage DUO type full-coverage multi-channel three-phase separator is communicated with the homogeneous regulating tank through a first-stage DUO type three-phase separator collecting biogas conveying pipe; the top of the two-stage DUO type full-coverage multi-channel three-phase separator is communicated with the homogenizing adjusting tank through a biogas collecting conveying pipe of the two-stage DUO type three-phase separator; a wastewater treatment inlet pipeline is arranged at the lower side part of the homogenizing adjusting tank;

the anaerobic reactor is characterized in that a first anaerobic reaction zone is formed in a region positioned between the pan-shaped pulse water distribution system, a second anaerobic reaction zone is formed in a region positioned between the pan-shaped pulse water distribution system and the first-stage DUO-type full-coverage multi-channel three-phase separator, a third anaerobic reaction zone is formed in a region positioned between the first-stage DUO-type full-coverage multi-channel three-phase separator and the second-stage DUO-type full-coverage multi-channel three-phase separator, and a fourth anaerobic reaction zone is formed in a region positioned between the second-stage DUO-type full-coverage multi-channel three-phase separator and the anaerobic effluent collecting pipe.

Further, the jet mixing system includes the jet mixer, the jet mixer feed pump of installing on homogeneity regulator tank inside wall, connects homogeneity regulator tank jet mixing system outlet conduit between homogeneity regulator tank and jet mixer feed pump, connects in jet mixer feed pump and jet mixer and sets up in the outside jet mixing system circulation return line of homogeneity regulator tank.

Further, a pH sensor, a TT temperature sensor and an FS flow switch are arranged on the circulating return pipeline of the jet mixing system.

Furthermore, the water outlet distribution pipe of the anaerobic reactor system comprises an anaerobic water outlet/circulating reflux distribution pipe vertically arranged in the homogeneity regulation tank, an anaerobic water outlet pipe connected with the lower part of the anaerobic water outlet/circulating reflux distribution pipe, a water outlet distribution vertical pipe connected with the water outlet end of the anaerobic water outlet pipe and vertically arranged, a waste gas discharge port arranged at the top end of the water outlet distribution vertical pipe and an anaerobic system water outlet arranged at the upper side part of the water outlet distribution vertical pipe.

Furthermore, the pot-shaped pulse water distribution system comprises a pot-shaped sludge hopper which is arranged at the inner lower part of the anaerobic reactor and is supported and fixed by a side wall supporting pipe which is vertically arranged, and a plurality of water distributors which are arranged in parallel to the tangential direction from top to bottom and are arranged around the inner wall of the pot-shaped sludge hopper;

the water distributor comprises a water distribution pipe arranged on the inner wall of the pot-shaped sludge bucket in a tangential direction parallel to the pot-shaped sludge bucket from top to bottom, water distribution slits uniformly distributed on the side parts of the water distribution pipe and provided with openings at the same side, and a connecting pipe which penetrates through the inner wall of the pot-shaped sludge bucket and is communicated with the water distribution pipe and is provided with a flange plate; the opening directions of the water distribution slits on the adjacent water distribution pipes are arranged in a clockwise direction and an anticlockwise direction in a staggered manner, and the ends of the connecting pipes are connected with water distribution connecting pipes.

Furthermore, the double-path pulse feeding system comprises a variable-frequency anaerobic reactor feed pump connected with the lower side part of the homogenizing adjusting tank, an anaerobic reactor main feeding pipe connected with the variable-frequency anaerobic reactor feed pump, a water distribution pipe with two flow directions, a counter-clockwise water inlet branch pipe connected with one flow direction of the water distribution pipe, and a clockwise water inlet branch pipe connected with the other flow direction of the water distribution pipe, wherein the anaerobic reactor main feeding pipe is connected with a discharge port of the anaerobic reactor main feeding pipe; the end part of the anticlockwise water inlet branch pipe is connected with anticlockwise water distribution branch pipes with the same quantity with the water distribution slits with anticlockwise openings; the end part of the clockwise water inlet branch pipe is connected with clockwise water distribution branch pipes with the same number as the water distribution slits with clockwise openings;

the anticlockwise water distribution branch pipe is connected with a water distribution connecting pipe connected with the water distribution slit with an anticlockwise opening, and the clockwise water inlet branch pipe is connected with a water distribution connecting pipe connected with the water distribution slit with a clockwise opening; and a flow control pipeline of the pulse water distribution system is connected between the anticlockwise water inlet branch pipe and the clockwise water inlet branch pipe.

Furthermore, a first automatic control pneumatic butterfly valve is installed on the clockwise water inlet branch pipe, a second automatic control pneumatic butterfly valve is installed on the anticlockwise water inlet branch pipe, and a manual butterfly valve is installed on the flow control pipeline of the pulse water distribution system; and a flowmeter is arranged on the main feeding pipeline of the anaerobic reactor.

Furthermore, the primary DUO type full-coverage multi-channel three-phase separator is supported by a support frame on the inner side wall of the shell of the high-speed anaerobic reactor; the first-stage DUO type full-coverage multi-channel three-phase separator is supported by an internal frame supporting plate to form a circular three-phase separator which can meet the requirement of being fully distributed in the whole anaerobic reactor and has a complete cross section; the first-stage DUO type full-coverage multi-channel three-phase separator comprises a bucket-shaped biogas collection cabin, a middle main biogas chamber and two side biogas chambers, wherein the middle main biogas chamber and the two side biogas chambers are separated by the inner space of the bucket-shaped biogas collection cabin; a first separation channel is arranged at the lower side part of the methane collection cabin, second separation channels are symmetrically arranged at the upper side part of the methane collection cabin, which is positioned on the first separation channel, and an anaerobic sludge falling gap is arranged at the bottom of the methane collection cabin; and biogas collecting communicating pipes which are communicated with a biogas collecting cabin and a side biogas chamber are respectively arranged above the inner liquid level in the DUO type full-coverage multi-channel three-phase separator, are communicated with the middle main biogas chamber and then are collected in a biogas collecting header pipe, and then are connected with a first-stage DUO type three-phase separator collecting biogas conveying pipe with a flange plate to enter the interior of the homogenizing adjusting tank.

Furthermore, the first separation channel and the second separation channel are downward water flow channels with the inclination of 45-60 degrees, and are used for completing the functions of methane separation and solid-liquid separation of granular sludge and wastewater; the first separation channel and the second separation channel are both channels formed by parallel plates, the interval of 100mm is arranged between every two adjacent parallel plates, and the parallel plates are supported by an internal frame support plate to keep the spacing between the parallel plates and be integrally fixed.

Furthermore, the upper part of the anaerobic effluent collecting pipe is transversely and uniformly provided with open holes, and the open holes are positioned 200mm below the liquid level in the anaerobic reactor.

Compared with the prior art, the utility model following beneficial effect including:

the utility model discloses a big height-diameter ratio granular sludge anaerobic reactor system of extrinsic cycle, as a neotype high-speed anaerobic reactor, on the basis of the high velocity of flow that rises that keeps high-speed anaerobic reactor and high volume load rate, from water distribution mode, three-phase separator separation mode and play water collection mode, carried out innovative improvement to IC inner loop anaerobic reactor commonly used, include by following beneficial effect:

1. the utility model discloses an adopt novel "pot form" pulse water distribution system, not only avoided dealing with such as the water distribution system that appears in containing high concentration calcium ion papermaking waste water and blockking up the problem, simultaneously through setting up two-way "pulse" charge-in system that the flow is different and the interval switches, can avoid "pot form" inside strong whirl of production of water distribution system, increase "the pot" granule mud and the "turbulent flow" intensity that waste water mixes. By adopting a double-path pulse feeding system, the material mixing (granular sludge and wastewater) strength and the mass transfer strength in a pot-shaped water distribution system can be enhanced, and the degradation effect of the wastewater in the area is improved. The slit water distributor arranged in the 'pot' can be cleaned regularly by using citric acid or oxalic acid to prevent the slit of the water distribution from being blocked. The bottom of the pot-shaped water distribution system can be convenient for discharging and injecting anaerobic granular sludge (such as calcified ineffective granular sludge);

2. the utility model discloses an anaerobic reactor is the most central part during three-phase separator, whether can effectively separate granular sludge, marsh gas and waste water is the most important evaluation index of weighing three-phase separation. The novel DUO type multi-channel three-phase separator has the advantages that biogas and granular sludge/wastewater mixed liquid are separated, and granular sludge and wastewater are separated, the holding capacity of anaerobic granular sludge in the anaerobic reactor can be greatly improved in the two-stage separation mode, small-granular anaerobic granular sludge is guaranteed not to be flushed out of the anaerobic reactor under the action of hydraulic power and biogas rising of the IC internal circulation anaerobic reactor, and the novel anaerobic reactor is the greatest advantage. Meanwhile, as the biogas collected by the first-stage DUO type multi-channel three-phase separator and the second-stage DUO type multi-channel three-phase separator is conveyed to the homogenizing tempering tank instead of rising along the anaerobic reactor, the stability of anaerobic reaction of the third anaerobic reaction zone and the fourth anaerobic reaction zone is ensured, and the risk that anaerobic granular sludge is flushed out of the anaerobic reactor is reduced;

3. the utility model adopts the submerged water outlet collecting pipe to replace the conventional anaerobic reactor and adopts the water outlet mode of the zigzag overflow weir plate, which can greatly improve the uniformity and stability of water outlet;

4. the utility model discloses a novel anaerobic reactor system is complete inclosed anaerobic treatment system, and the anaerobic system top is marsh gas storage space, can need not the essential marsh gas steady voltage cabinet of IC inner loop anaerobic reactor to reduce the risk that marsh gas was handled. Meanwhile, the novel anaerobic reactor system does not have waste gas to be treated at the top of the IC anaerobic reactor, so that the design of the anaerobic reactor is simplified;

5. the anaerobic reactor of the utility model has no internal mixed liquid ascending pipe and descending pipe similar to the IC anaerobic reactor, only has the methane collection and conveying pipe, and can effectively avoid the problem of the invalidation of the anaerobic reactor caused by the blockage of the ascending pipe and the descending pipe in the process of treating the papermaking wastewater containing high-concentration calcium ions by the IC internal circulation anaerobic reactor;

6. although the utility model discloses anaerobic reactor has not had the reinforcing effect of the mixture that the internal circulation of IC internal circulation anaerobic reactor brought and mass transfer, nevertheless can satisfy the mixture and the mass transfer intensity requirement that the anaerobic reaction process needs completely through "pot-shaped" pulse water distribution system still. The performance of the anaerobic reactor cannot be influenced, and compared with the comparative analysis of the IC internal circulation anaerobic reactor, the novel anaerobic reactor system and device have more stable and efficient treatment effects and wide application prospects.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of an external circulation granular sludge anaerobic reactor system with a large height-diameter ratio;

FIG. 2 is a schematic diagram of the jet mixing system of FIG. 1;

FIG. 3 is a schematic diagram of the configuration of the outlet distributor tube of the anaerobic reactor system of FIG. 1;

FIG. 4 is a schematic diagram of the dual pulse feed system of FIG. 1;

FIG. 5 is a schematic structural view of a "pan-shaped" pulse water distribution system in FIG. 1;

FIG. 6 is a top view of the structure of FIG. 5;

FIG. 7 is a schematic structural view of the water distributor in FIG. 5;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;

FIG. 9 is a view showing an installation structure of the one-stage DUO type full-covered multi-channel three-phase separator and the anaerobic reactor in FIG. 1;

fig. 10 is a structural relationship diagram of the biogas collection chamber and the intermediate main biogas chamber in fig. 9;

FIG. 11 is a top view of the structure of the first-stage DUO type full-coverage multi-channel three-phase separator of the present invention;

FIG. 12 is a view showing a structural relationship between the inner frame support plates and the parallel plates of FIG. 11;

FIG. 13 is a schematic view of the structure of the biogas collecting mechanism of the present invention;

FIG. 14 is a schematic structural view of an anaerobic effluent collection tube;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a homogenizing adjusting tank, 2-a wastewater treatment inlet pipeline, 3-a jet mixing system, 4-a chemical feeding pipeline, 6-a homogenizing adjusting tank liquid level, 7-a homogenizing adjusting tank upper part biogas chamber, 8-a biogas discharge and utilization outlet, 9-an anaerobic reactor top biogas chamber, 10-an anaerobic reactor internal liquid level, 11-an anaerobic effluent collecting pipe, 111-an opening, 12-a fourth anaerobic reaction zone, 13-a two-stage DUO type full-coverage multi-channel three-phase separator, 14-a third anaerobic reaction zone, 15-a one-stage DUO type full-coverage multi-channel three-phase separator, 16-a second anaerobic reaction zone, 17-a first anaerobic reaction zone, 18- 'pot-shaped' pulse water distribution system, 19-anaerobic reactor, 20-a two-way pulse feeding system, 21-first-stage DUO type three-phase separator collecting biogas conveying pipe, 22-second-stage DUO type three-phase separator collecting biogas conveying pipe, 23-anaerobic effluent conveying pipe, 24-first communicating pipe, 25-anaerobic reactor system effluent distributing pipe, 26-biogas pressure sensor, 27-electric conduction type foam detector, 31-jet mixing system circulating reflux pipeline, 32-jet mixer feeding pump, 33-homogenizing adjusting tank jet mixing system outlet pipeline, 35-jet mixer, 36-pH sensor, 37-TT temperature sensor, 38-FS flow switch, 41-effluent distributing vertical pipe, 42-anaerobic system water outlet, 43-waste gas discharge outlet, 44-anaerobic effluent/reflux circulating water distributing pipe, 46-anaerobic water outlet pipe, 701-clockwise water distribution branch pipe, 702-clockwise water inlet branch pipe, 703-first automatic control pneumatic butterfly valve, 704-water distribution pipe, 705-main feed pipe of anaerobic reactor, 706-frequency conversion type anaerobic reactor feed pump, 707-flowmeter, 708-second automatic control pneumatic butterfly valve, 709-counterclockwise water inlet branch pipe, 710-pulse water distribution system flow control pipe, 711-manual butterfly valve, 712-counterclockwise water distribution branch pipe, 202-water distribution connecting pipe, 203-connecting pipe, 204-water distribution pipe, 205-side wall support pipe, 206-water distribution slit, 207-pot sludge hopper, 211-clockwise water flow direction induced by slit water distributor, 213-counterclockwise water flow direction induced by slit water distributor, 214-cavity structure, 54-support frame, 57-internal frame support plate, 58-anaerobic sludge falling gap, 59-first separation channel, 512-second separation channel, 513-biogas collection chamber, 514-internal liquid level, 515-biogas chamber, 516-biogas collection communicating pipe, 523-biogas collection header pipe, 524-intermediate main biogas chamber, 28-counter-clockwise water flow direction induced by slit water distributor, 29-clockwise water flow direction induced by slit water distributor, biogas ascending flow direction in 84-DUO type multichannel three-phase separator biogas collection chamber, large-particle anaerobic particle sludge in 83-DUO type multichannel three-phase separator biogas collection chamber descending sedimentation direction, path for separating small-particle anaerobic particle sludge in 81-reactor anaerobic particle along separation channel in DUO type multichannel three-phase separator, 82-sludge and wastewater mixed liquid are separated by sludge-water separation channel, and wastewater ascends flow state.

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 efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper side portion", "lower side portion", "upper", "lower", "inner side wall", "bottom", and the like indicate orientations or positional relationships for convenience of description only and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-14, the utility model discloses an external circulation large height-diameter ratio granular sludge anaerobic reactor system, including homogeneity regulation jar 1, anaerobic reactor 19, install in the anaerobic reactor system of homogeneity regulation jar 1 upper portion and go out water distribution pipe 25, install in the chemical throwing pipeline 4 of homogeneity regulation jar 1 lateral part, install in the jet-flow hybrid system 3 of homogeneity regulation jar 1 lower part, install one-level DUO type full coverage multichannel three-phase separator 15 in anaerobic reactor 19, set up in the second grade DUO type full coverage multichannel three-phase separator 13 of one-level DUO type full coverage multichannel three-phase separator 15 top, install in second grade DUO type full coverage multichannel three-phase separator 13 top and lie in anaerobic reactor liquid level 10 below anaerobic reactor anaerobic effluent collecting pipe 11, install in the anaerobic reactor 19 bottom "pot-like" pulse water distribution system 18, A double-path pulse feeding system 20 connected between the pan-shaped pulse water distribution system 18 and the bottom of the homogeneous regulating tank 1; the primary DUO type full-coverage multi-channel three-phase separator 15 and the secondary DUO type full-coverage multi-channel three-phase separator 13 have the same structure;

the pan-shaped pulse water distribution system 18: in the engineering practice process for many years, the inverted umbrella-shaped slit water distribution system of the original IC internal circulation anaerobic reactor is easy to block under many conditions, particularly when the papermaking wastewater containing high-concentration calcium ions is treated, the three-phase separator of the original design is easy to calcify and block, and aiming at the phenomenon, the novel ECSB DUO anaerobic reactor adopts a novel pot-shaped pulse water distribution system.

A chemical adding pipeline 4, wherein a plurality of different chemicals are required to be added according to different water quality characteristics of the wastewater, and all the chemicals required to be added are added from the tank wall of the homogenization adjusting tank, and are rapidly mixed and homogenized with the original wastewater and the anaerobic effluent circulating dilution water;

the top of the homogenizing adjusting tank 1 is provided with a methane discharging and utilizing outlet 8 which is communicated with a methane chamber 7 at the upper part of the homogenizing adjusting tank at the top in the homogenizing adjusting tank 1 and discharges or utilizes methane generated by an ECSB DUO anaerobic reactor system;

anaerobic reactor system effluent distribution pipe 25: the jet flow mixer is used for distributing treated outlet water and internal circulating water with the same water inflow amount, the outlet water is discharged through the water outlet pipe and enters a subsequent treatment system, and circulating dilution water, anaerobic inlet water and chemicals are quickly mixed and homogenized by the jet flow mixer.

Homogenizing adjusting tank 1: in the anaerobic treatment process of the wastewater, the requirement of anaerobic microorganisms (including acid-producing bacteria, hydrogen-producing acetogenic bacteria, methanogen and the like) on the external environment is very high, for example, the optimal pH is 6.8-7.3, the optimal temperature is 35-37 ℃, N, P nutrient substances and other multiple and trace elements which need to be maintained by the anaerobic microorganisms are required at the same time, and steam (or cooling), chemical drugs and the like are required to be added to maintain the conditions, and in a homogenizing adjusting tank, the chemical drugs, the anaerobic inlet water to be treated and the dilution water which flows back from the EGSB DUO anaerobic reactor can be quickly and uniformly mixed under the action of a quick jet mixer in the homogenizing adjusting tank, so that the inlet water with relatively constant water quality and water quantity of the ECSB DUO anaerobic reactor system is the important guarantee of the stable operation of the anaerobic reactor;

the inner top of the anaerobic reactor 19 is positioned above the inner liquid level 10 of the anaerobic reactor and is communicated with the inner top wall of the anaerobic reactor 19 to form an anaerobic reactor top biogas chamber 9, and the anaerobic reactor top biogas chamber 9 is communicated with the upper biogas chamber 7 of the homogenizing adjusting tank through a first communicating pipe 24; the anaerobic effluent collecting pipe 11 is connected with the anaerobic reactor system effluent distributing pipe 25 through an anaerobic effluent conveying pipe 23 arranged above the liquid level 6 of the homogenizing adjusting tank; the first-stage DUO type full-coverage multi-channel three-phase separator 15 is communicated with the homogeneous regulating tank 1 through a first-stage DUO type three-phase separator collecting biogas conveying pipe 21; the top of the second-stage DUO type full-coverage multi-channel three-phase separator 13 is communicated with the homogenizing adjusting tank 1 through a second-stage DUO type three-phase separator collecting biogas conveying pipe 22; a wastewater treatment inlet pipeline 2 is arranged at the lower side part of the homogenization adjusting tank 1; the space above the liquid level of the top of the anaerobic reactor in a biogas chamber 9 at the top of the anaerobic reactor is a biogas storage space, the height above the liquid level is conventionally set to be 0.5-1.5 m, and the designed biogas pressure in the biogas chamber is 50mbar under the normal operation condition; the two-stage DUO type three-phase separator collects the biogas conveying pipe 22: biogas generated in the third anaerobic reaction zone is conveyed to the homogenizing adjusting tank by a biogas collecting and conveying pipe at the upper part of the second-stage DUO type three-phase separator, so that the interference of the biogas to the fourth reaction zone is reduced, the stability of anaerobic degradation reaction of the fourth reaction zone is facilitated, and anaerobic sludge in the fourth anaerobic reaction zone is prevented from being wrapped by the biogas and rising to run off; anaerobic effluent conveying pipe 23: conveying effluent collected by an effluent collecting pipe at the top of the anaerobic reactor to an effluent distribution vertical pipe in a homogenization adjusting tank, discharging treated wastewater with the same inflow as that of the effluent to a subsequent treatment system, and refluxing circulating dilution water to the homogenization adjusting tank; first communication pipe 24: used for communicating and balancing the biogas pressure at the top of the homogenizing adjusting tank and the ECSB DUO anaerobic reactor.

A first-stage DUO type full-coverage multi-channel three-phase separator 15 used for separating the methane generated in the first and second reaction zones, the anaerobic granular sludge and the treated wastewater, the separated methane is sent to a homogenizing adjusting tank, the separated anaerobic granular sludge falls back to the first and second anaerobic reaction zones, and the wastewater treated by the first and second anaerobic reaction zones rises to the upper third reaction zone for further treatment.

Two-stage DUO type full-coverage multi-channel three-phase separator 13: has better separation effect of methane, anaerobic sludge and waste water than the reverse triangle methane collecting module of the IC internal circulation anaerobic reactor. Two rows of downward water flow channels with the inclination of 45-60 degrees are arranged in the DUO type multi-channel three-phase separator, methane rises along channel walls and is collected in a methane collection cabin, anaerobic granular sludge and wastewater after methane removal are separated in the downward flowing process along the inclined channels, the separated sludge falls into an anaerobic reactor along a spacer zone, and the separated wastewater flows upwards;

the novel DUO type multi-channel three-phase separator can better separate anaerobic granular sludge with smaller particles in the anaerobic reactor, creates good conditions for gradually proliferating the anaerobic granular sludge into granular sludge with larger particles, and effectively ensures that more anaerobic granular sludge is kept in the anaerobic reactor instead of being flushed out of the anaerobic reactor by high ascending flow velocity like an IC internal circulation anaerobic reactor, thereby causing the problem of 'loss of the anaerobic granular sludge with small particle size'. Therefore, the novel DUO type multi-channel three-phase separator can really and effectively separate the methane, the anaerobic granular sludge and the wastewater, the IC only has the separation and collection of the methane, the separation function of the granular sludge and the wastewater is not provided, and the purpose of separating the granular sludge from the wastewater is completely achieved by the weight of the granular sludge.

Liquid level in the oxygen reactor 10: the maximum liquid level height of the ECSB DUO anaerobic reactor can be changed from 15m to 30m according to different designs.

Homogenizing and adjusting the liquid level of the tank 6: the liquid level in the homogenizing adjusting tank is lower than that of an ECSB DUO anaerobic reactor by 0.5-1 m in the conventional design.

And 7, homogenizing and adjusting the biogas chamber at the upper part of the tank: the homogenizing adjusting tank is of a completely closed structure, the space above the liquid level in the tank is a methane storage space, and the designed methane pressure under the normal operation condition is 50 mba.

And (3) treating a wastewater inlet pipe 2: the wastewater to be treated is pumped into an ESCB DUO anaerobic reactor treatment system from a water inlet on a homogenizing adjusting tank through a feeding lifting pump;

jet mixing system 3: a rapid jet mixing system for rapidly mixing inlet water, chemical requirements and anaerobic outlet water circulating dilution water is arranged in a homogenizing adjusting tank so as to ensure the relative stability of the inlet water quantity and the water quality of the ECSB DUO anaerobic reactor. A temperature sensor TT for detecting the water inlet temperature of the ECSB DUO anaerobic reactor, a sensor for detecting the pH value of the wastewater and a flow switch for detecting the flow condition in a circulating pipeline are arranged on a circulating pipeline of the jet mixing system;

the anaerobic reactor 19 is internally provided with a first anaerobic reaction zone 17 formed in the region positioned between the pan-shaped pulse water distribution system 18 and the first-stage DUO type full-coverage multi-channel three-phase separator 15, a second anaerobic reaction zone 16 formed in the region positioned between the pan-shaped pulse water distribution system 18 and the first-stage DUO type full-coverage multi-channel three-phase separator 13, a third anaerobic reaction zone 14 formed in the region positioned between the first-stage DUO type full-coverage multi-channel three-phase separator 15 and the second-stage DUO type full-coverage multi-channel three-phase separator 13, and a fourth anaerobic reaction zone 12 formed in the region positioned between the second-stage DUO type full-coverage multi-channel three-phase separator 13 and.

First anaerobic reaction zone 17: the device is a reaction area in a pot-shaped pulse water distribution system, organic pollutants in inlet water are rapidly contacted with anaerobic granular sludge in the area and subjected to mass transfer exchange due to strong shearing, turbulent flow, mixing and stirring effects generated by a pot-shaped pulse slit water distributor, so that the organic pollutants in waste water are rapidly degraded, and simultaneously, a large amount of generated methane accelerates the sludge-water mixing effect of the area and improves the upstream flow velocity of the whole sludge-water mixed liquid, so that a granular sludge bed is expanded and fluidized, and the reaction area can be combined with a second reaction area to form a main reaction area.

The second anaerobic reaction zone 16 is a space above the top of the 'pot-shaped' pulse water distribution system and is positioned below the first-stage DUO type full-coverage multi-channel three-phase separator, the reactor is provided with a large amount of large-particle anaerobic granular sludge expanded by high ascending flow velocity, organic pollutants in the wastewater are degraded into water and carbon dioxide under the action of strong stirring, mixing and shearing generated by the cooperation of water power and a large amount of generated methane, and a large amount of methane (methane) is generated at the same time, and the second anaerobic reaction zone is the largest anaerobic reaction zone in the ECSB DUO anaerobic reactor and generally accounts for more than 60% of the effective volume of the whole anaerobic reactor.

Third anaerobic reaction zone 14: the third reaction zone is located in the space between the first stage DUO type full-coverage multi-channel three-phase separator and the second stage DUO type full-coverage multi-channel three-phase separator. After being degraded in the first and second main anaerobic reaction zones, the organic pollutants in the wastewater are greatly reduced, so that the amount of biogas generated by the reactor zone is much less than that of the first and second reaction zones, the disturbance generated by the biogas is small, and the anaerobic reaction in the reaction zone is relatively stable. Large-particle anaerobic granular sludge and small-particle anaerobic granular sludge which are expanded exist in the area, soluble organic pollutants in wastewater can be further degraded, generated biogas is collected by the second-stage DUO type three-phase separator and conveyed to the homogenizing adjusting tank, the granular sludge falls back to the third reaction area after being separated by the second-stage DUO type three-phase separator, and anaerobic granular sludge with large particles formed in the area passes through the first-stage DUO type three-phase separator and falls back to the first anaerobic reaction area and the second anaerobic reaction area. The treated wastewater enters a fourth reaction zone at the upper part after being separated by a DUO type three-phase separator.

The fourth anaerobic reaction zone 12 is positioned below the water outlet collecting pipe, the second-stage DUO type fully covers the space above the multi-channel three-phase separator, and because the anaerobic generated biogas (more than 95 percent) is collected by the first-stage and second-stage DUO type multi-pass three-phase separators and conveyed into the homogeneous regulating tank, the anaerobic reaction in the anaerobic reaction zone is very smooth, only a small amount of small-particle anaerobic granular sludge and wastewater carry out mass transfer and carry out anaerobic degradation on a small amount of organic pollutants in the wastewater, the generated biogas directly enters a biogas storage chamber at the top of the anaerobic reaction zone, the gradually increased anaerobic granular sludge is settled downwards and falls into an anaerobic reactor, and part of flocculent or small-particle anaerobic sludge is collected by the collecting pipe and then enters the homogeneous regulating tank.

Wherein, the jet mixing system 3 includes a jet mixer 35 installed on the inner side wall of the homogeneity regulation tank 1, a jet mixer feeding pump 32, a homogeneity regulation tank jet mixing system outlet pipeline 33 connected between the homogeneity regulation tank 1 and the jet mixer feeding pump 32, and a jet mixing system circulation return pipeline 31 connected between the jet mixer feeding pump 32 and the jet mixer 35 and arranged outside the homogeneity regulation tank 1.

Wherein, a pH sensor 36, a TT temperature sensor 37 and an FS flow switch 38 are arranged on the circulating return pipeline 31 of the jet mixing system.

The anaerobic reactor system effluent distribution pipe 25 includes an anaerobic effluent/circulating reflux distribution pipe 44 vertically disposed in the homogenization adjustment tank 1, an anaerobic outlet pipe 46 connected to the lower portion of the anaerobic effluent/circulating reflux distribution pipe 44, an effluent distribution vertical pipe 41 vertically connected to the water outlet end of the anaerobic outlet pipe 46, a waste gas discharge port 43 disposed at the top end of the effluent distribution vertical pipe 41, and an anaerobic system water outlet 42 disposed at the upper side portion of the effluent distribution vertical pipe 41.

Wherein, the pan-shaped pulse water distribution system 18 comprises a pan-shaped sludge hopper 207 which is arranged at the inner lower part of the anaerobic reactor 19 and is supported and fixed by a side wall supporting tube 205 which is vertically arranged, and a plurality of water distributors which are arranged from top to bottom in parallel to the tangential direction and are arranged around the inner wall of the pan-shaped sludge hopper 207;

the water distributor comprises a water distribution pipe 204 which is arranged on the inner wall of the pan-shaped sludge hopper 207 and is arranged in a tangential direction parallel to the upper part and the lower part, water distribution slits 206 which are uniformly distributed on the side part of the water distribution pipe 204 and are provided with openings at the same side, and a connecting pipe 203 which penetrates through the inner wall of the pan-shaped sludge hopper 207 and is communicated with the water distribution pipe 204 and is provided with a flange plate; the opening directions of the water distribution slits 206 on the adjacent water distribution pipes 204 are staggered in a clockwise direction and a counterclockwise direction, and the end of the connecting pipe 203 is connected with a water distribution connecting pipe 202;

a cavity structure 214 is formed between the outer side wall of the pot-shaped sludge hopper 207 and the inner wall of the lower tank body of the anaerobic reactor 19; the side wall support tube 205, the water distribution connecting tube 202, the connecting tube 203, the counter-clockwise water distribution branch tube 712 and the clockwise water distribution branch tube 701 are all positioned in the cavity structure 214.

In the pan-shaped sludge hopper 207: as shown by reference numeral 29, the water flow direction induced by the slit water distributor is 29: the slot on the slot water distributor on the inner wall of the pot-shaped pulse water distribution system is opened along the clockwise direction in the spraying direction, and when the waste water is sprayed out from the slot, a water flow state along the clockwise direction is formed in the pot-shaped pulse water distribution system; as shown by reference numeral 28, the counter-clockwise water flow direction 28 induced by the slit water distributor is: the slot on the slot water distributor on the inner wall of the pot-shaped pulse water distribution system is opened along the anticlockwise direction in the spraying direction, and when waste water is sprayed out from the slot, a water flow state along the anticlockwise direction is formed in the pot-shaped pulse water distribution system.

As shown by reference numeral 211, the water flow direction 211 induced by the slit water distributor is clockwise: when the fluid jet slit of the slit water distributor is installed along the clockwise direction, a water flow state flowing along the clockwise direction is formed in the pan-shaped water distribution system; as shown by reference numeral 213, the counter-clockwise water flow direction 213 induced by the slit water distributor: when the fluid jet slit of the slit water distributor is installed along the counterclockwise direction of mud, a water flow state flowing along the counterclockwise direction is formed in the pan-shaped water distribution system.

Wherein, the two-way pulse feeding system 20 comprises a variable frequency anaerobic reactor feed pump 706 connected with the lower side part of the homogenizing adjusting tank 1, a water distribution pipeline 704 with two flow directions, a counter-clockwise water inlet branch pipe 709 connected with one flow direction of the water distribution pipeline 704 and a clockwise water inlet branch pipe 702 connected with the other flow direction of the water distribution pipeline 704, wherein an anaerobic reactor main feed pipeline 705 connected with the variable frequency anaerobic reactor feed pump 706 is connected with a discharge port of the anaerobic reactor main feed pipeline 705; the end of the counter-clockwise water inlet branch pipe 709 is connected with counter-clockwise water distribution branch pipes 712 with the same number as the water distribution slits 206 with counter-clockwise openings; the end of the clockwise water inlet branch pipe 702 is connected with a clockwise water distribution branch pipe 701 with the same number as the water distribution slits 206 with clockwise openings;

the counter-clockwise water distribution branch pipe 712 is connected with the water distribution connecting pipe 202 connected with the counter-clockwise opened water distribution slit 206, and the clockwise water inlet branch pipe 702 is connected with the water distribution connecting pipe 202 connected with the clockwise opened water distribution slit 206; a pulse water distribution system flow control pipeline 710 is connected between the counterclockwise water inlet branch pipe 709 and the clockwise water inlet branch pipe 702.

Wherein, a first automatic control pneumatic butterfly valve 703 is installed on the clockwise water inlet branch pipe 702, a second automatic control pneumatic butterfly valve 708 is installed on the counterclockwise water inlet branch pipe 709, and a manual butterfly valve 711 is installed on the pulse water distribution system flow control pipeline 710; a flow meter 707 is arranged on the main supply pipe 705 of the anaerobic reactor.

Two-way pulse feed system 20: in order to avoid the generation of strong rotational flow inside a pot-shaped water distribution system and increase the turbulence intensity of mixing of granular sludge and wastewater in a pot, two pulse feeding systems which respectively distribute water to a slit water distributor in the pot along clockwise and anticlockwise directions are arranged, and switching of 80% flow and 20% flow of two feeding pipes is achieved through a switching valve, wherein the switching interval is 5-10 minutes. By adopting a double-path pulse feeding system, the material mixing (granular sludge and wastewater) strength and the mass transfer strength in a pot-shaped water distribution system can be greatly enhanced, and the wastewater degradation effect in the area is improved.

Wherein, the first-stage DUO type full-coverage multi-channel three-phase separator 15 is supported by a support frame 54 on the inner side wall of the shell of the high-speed anaerobic reactor; the first-stage DUO type full-coverage multi-channel three-phase separator 15 is supported by an internal frame supporting plate 57 to form a circular three-phase separator which can meet the requirement of being fully distributed in the whole anaerobic reactor 19 and has a complete section; the first-stage DUO type full-coverage multi-channel three-phase separator 15 comprises a bucket-shaped biogas collection cabin 513, a middle main biogas chamber 524 and two side biogas chambers 515, wherein the middle main biogas chamber 524 and the two side biogas chambers are formed by separating the inner space of the bucket-shaped biogas collection cabin; a first separation channel 59 is arranged at the lower side part of the methane collection chamber 513, second separation channels 512 are symmetrically arranged at the upper side part of the methane collection chamber 513, which is positioned on the first separation channel 59, and an anaerobic sludge falling gap 58 is arranged at the bottom of the methane collection chamber 513; a biogas collecting communicating pipe 516 communicating the biogas collecting cabin 513 and the side biogas chamber 515 is respectively arranged above the inner liquid level 514 in the DUO type full-coverage multi-channel three-phase separator 56, the biogas collecting communicating pipe 516 is communicated with the middle main biogas chamber 524 and then is collected in a biogas collecting header pipe 523, and then is connected with a first-stage DUO type three-phase separator collecting biogas conveying pipe 21 with a flange plate to enter the interior of the homogenizing adjusting tank 1; the first-stage DUO type three-phase separator collects the biogas conveying pipe 21: biogas generated by the first anaerobic reaction zone and the second anaerobic reaction zone (namely the main reaction zone) passes through a biogas collecting and conveying pipe at the upper part of the first-stage DUO type three-phase separator and is conveyed to the homogenizing adjusting tank, so that the interference of the biogas to the third reaction zone is reduced, and the stability of anaerobic degradation reaction of the third reaction zone is facilitated.

The first separation channel 59 and the second separation channel 512 are downward water flow channels with the inclination of 45-60 degrees, and are used for completing the functions of methane separation and solid-liquid separation of granular sludge and wastewater; the first separation channel 59 and the second separation channel 512 are both composed of parallel plates 525, a space of 100mm is provided between the adjacent parallel plates 525, and the parallel plates 525 are supported by the inner frame support plate 57 to maintain the parallel plate spacing and are integrally fixed.

As indicated by reference numeral 84, is the biogas collecting chamber biogas rising flow direction 84 of the DUO type multi-channel three-phase separator: biogas generated by the anaerobic system flows upwards in the vertical direction and is collected by a biogas collection chamber at the top of the DUO-type three-phase separator. As shown in reference numeral 83, the direction 83 for downward sedimentation of large anaerobic granular sludge in the biogas collection chamber of the DUO type multi-channel three-phase separator is as follows: similar to the IC anaerobic reactor, the anaerobic granular sludge with larger grain type in the anaerobic reactor can completely depend on the weight of the anaerobic reactor to move downwards and remain in the anaerobic reactor.

As shown in the figure with reference numeral 81, is a path 81 for separating the granular type small anaerobic granular sludge in the anaerobic reactor along the separation channel in the DUO type multi-channel three-phase separator: a large amount of small-sized granular sludge and a small amount of large-sized granular sludge are subjected to a methane and granular sludge separation process in a first separation channel 59 and a second separation channel 512 in the DUO type three-phase separator, methane flows upwards along channel walls and is collected at the top of a methane collection chamber 513 of the DUO type multi-channel three-phase separator, anaerobic sludge and wastewater after methane removal are separated in a downward process along the channels, the separated anaerobic granular sludge is easily settled into an anaerobic reactor due to no disturbance of the methane, and the wastewater after the anaerobic granular sludge separation flows upwards in a vertical direction.

As shown by reference numeral 82, the sludge and wastewater mixed liquor is separated by a sludge-water separation channel, and then the wastewater rises to flow state 82: the waste water flows along the vertical direction of the anaerobic reactor after mud-water separation.

Wherein, the upper part of the anaerobic effluent collecting pipe 11 is transversely and uniformly provided with open pores 111, and the open pores 111 are positioned 200mm below the liquid level in the anaerobic reactor.

Wherein, the top of the anaerobic reactor 19 is provided with a methane pressure sensor 26 for detecting the methane pressure of the methane chamber 9 at the top of the anaerobic reactor and an electric conduction type foam detector 27 for detecting the foam generated at the top in the anaerobic reactor 19.

Has the advantages that:

the utility model discloses a big height-diameter ratio granular sludge anaerobic reactor system of extrinsic cycle, as a neotype high-speed anaerobic reactor, on the basis of the high velocity of flow that rises that keeps high-speed anaerobic reactor and high volume load rate, from water distribution mode, three-phase separator separation mode and play water collection mode, carried out innovative improvement to IC inner loop anaerobic reactor commonly used, include by following beneficial effect:

1. the utility model discloses an adopt novel "pot form" pulse water distribution system, not only avoided dealing with such as the water distribution system that appears in containing high concentration calcium ion papermaking waste water and blockking up the problem, simultaneously through setting up two-way "pulse" charge-in system that the flow is different and the interval switches, can avoid "pot form" inside strong whirl of production of water distribution system, increase "the pot" granule mud and the "turbulent flow" intensity that waste water mixes. By adopting a double-path pulse feeding system, the material mixing (granular sludge and wastewater) strength and the mass transfer strength in a pot-shaped water distribution system can be enhanced, and the degradation effect of the wastewater in the area is improved. The slit water distributor arranged in the 'pot' can be cleaned regularly by using citric acid or oxalic acid to prevent the slit of the water distribution from being blocked. The bottom of the pot-shaped water distribution system can be convenient for discharging and injecting anaerobic granular sludge (such as calcified ineffective granular sludge);

2. the utility model discloses an anaerobic reactor is the most central part during three-phase separator, whether can effectively separate granular sludge, marsh gas and waste water is the most important evaluation index of weighing three-phase separation. The novel DUO type multi-channel three-phase separator has the advantages that biogas and granular sludge/wastewater mixed liquid are separated, and granular sludge and wastewater are separated, the holding capacity of anaerobic granular sludge in the anaerobic reactor can be greatly improved in the two-stage separation mode, small-granular anaerobic granular sludge is guaranteed not to be flushed out of the anaerobic reactor under the action of hydraulic power and biogas rising of the IC internal circulation anaerobic reactor, and the novel anaerobic reactor is the greatest advantage. Meanwhile, as the biogas collected by the first-stage DUO type multi-channel three-phase separator and the second-stage DUO type multi-channel three-phase separator is conveyed to the homogenizing tempering tank instead of rising along the anaerobic reactor, the stability of anaerobic reaction of the third anaerobic reaction zone and the fourth anaerobic reaction zone is ensured, and the risk that anaerobic granular sludge is flushed out of the anaerobic reactor is reduced;

3. the utility model adopts the submerged water outlet collecting pipe to replace the conventional anaerobic reactor and adopts the water outlet mode of the zigzag overflow weir plate, which can greatly improve the uniformity and stability of water outlet;

4. the utility model discloses a novel anaerobic reactor system is complete inclosed anaerobic treatment system, and the anaerobic system top is marsh gas storage space, can need not the essential marsh gas steady voltage cabinet of IC inner loop anaerobic reactor to reduce the risk that marsh gas was handled. Meanwhile, the novel anaerobic reactor system does not have waste gas to be treated at the top of the IC anaerobic reactor, so that the design of the anaerobic reactor is simplified;

5. the anaerobic reactor of the utility model has no internal mixed liquid ascending pipe and descending pipe similar to the IC anaerobic reactor, only has the methane collection and conveying pipe, and can effectively avoid the problem of the invalidation of the anaerobic reactor caused by the blockage of the ascending pipe and the descending pipe in the process of treating the papermaking wastewater containing high-concentration calcium ions by the IC internal circulation anaerobic reactor;

6. although the utility model discloses anaerobic reactor has not had the reinforcing effect of the mixture that the internal circulation of IC internal circulation anaerobic reactor brought and mass transfer, nevertheless can satisfy the mixture and the mass transfer intensity requirement that the anaerobic reaction process needs completely through "pot-shaped" pulse water distribution system still. The performance of the anaerobic reactor cannot be influenced, and compared with the comparative analysis of the IC internal circulation anaerobic reactor, the novel anaerobic reactor system and device have more stable and efficient treatment effects and wide application prospects.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The external circulation large-height-diameter-ratio granular sludge anaerobic reactor system is characterized by comprising a homogenizing adjusting tank (1), an anaerobic reactor (19), an anaerobic reactor system water outlet distribution pipe (25) arranged on the upper side part of the homogenizing adjusting tank (1), a chemical feeding pipeline (4) arranged on the side part of the homogenizing adjusting tank (1), a jet mixing system (3) arranged on the lower side part of the homogenizing adjusting tank (1), a first-stage DUO-type fully-covered multi-channel three-phase separator (15) arranged in the anaerobic reactor (19), a second-stage DUO-type fully-covered multi-channel three-phase separator (13) arranged above the first-stage DUO-type fully-covered multi-channel three-phase separator (15), an anaerobic water outlet collection pipe (11) arranged above the second-stage DUO-type fully-covered multi-channel three-phase separator (13) and positioned below a liquid level (10) in the anaerobic reactor, and a pot-shaped pulse water distribution system (18) arranged at the bottom part of the, A double-path pulse feeding system (20) connected between the pan-shaped pulse water distribution system (18) and the bottom of the homogenizing adjusting tank (1); the primary DUO type full-coverage multi-channel three-phase separator (15) and the secondary DUO type full-coverage multi-channel three-phase separator (13) have the same structure;

the top of the homogenizing adjusting tank (1) is provided with a methane discharging and utilizing outlet (8) communicated with a methane chamber (7) at the upper part of the homogenizing adjusting tank at the top in the homogenizing adjusting tank (1);

the inner top of the anaerobic reactor (19) is positioned above the inner liquid level (10) of the anaerobic reactor and is communicated with the inner top wall of the anaerobic reactor (19) to form an anaerobic reactor top biogas chamber (9), and the anaerobic reactor top biogas chamber (9) is communicated with the upper biogas chamber (7) of the homogenizing adjusting tank through a first communication pipe (24); the anaerobic effluent collecting pipe (11) is connected with the effluent distributing pipe (25) of the anaerobic reactor system through an anaerobic effluent conveying pipe (23) arranged above the liquid level (6) of the homogenizing adjusting tank; the first-stage DUO type full-coverage multi-channel three-phase separator (15) is communicated with the homogenizing adjusting tank (1) through a first-stage DUO type three-phase separator collecting biogas conveying pipe (21); the top of the secondary DUO type full-coverage multi-channel three-phase separator (13) is communicated with the homogenizing adjusting tank (1) through a secondary DUO type three-phase separator collecting biogas conveying pipe (22); a wastewater treatment water inlet pipeline (2) is arranged at the lower side part of the homogenizing adjusting tank (1);

the anaerobic reactor (19) is internally provided with a first anaerobic reaction zone (17) formed in the region of the pan-shaped pulse water distribution system (18), a second anaerobic reaction zone (16) formed in the region between the pan-shaped pulse water distribution system (18) and the first-stage DUO-type full-coverage multi-channel three-phase separator (15), a third anaerobic reaction zone (14) formed in the region between the first-stage DUO-type full-coverage multi-channel three-phase separator (15) and the second-stage DUO-type full-coverage multi-channel three-phase separator (13), and a fourth anaerobic reaction zone (12) formed in the region between the second-stage DUO-type full-coverage multi-channel three-phase separator (13) and the anaerobic water outlet collecting pipe (11).

2. The external circulation high-height-diameter-ratio granular sludge anaerobic reactor system according to claim 1, wherein the jet mixing system (3) comprises a jet mixer (35) installed on the inner side wall of the homogenizing adjusting tank (1), a jet mixer feeding pump (32), a homogenizing adjusting tank jet mixing system outlet pipeline (33) connected between the homogenizing adjusting tank (1) and the jet mixer feeding pump (32), and a jet mixing system circulation backflow pipeline (31) connected to the jet mixer feeding pump (32) and the jet mixer (35) and arranged outside the homogenizing adjusting tank (1).

3. The external circulation large-height-diameter-ratio granular sludge anaerobic reactor system as claimed in claim 2, wherein the circulating return pipeline (31) of the jet mixing system is provided with a pH sensor (36), a TT temperature sensor (37) and an FS flow switch (38).

4. The external circulation large-height-diameter-ratio granular sludge anaerobic reactor system as claimed in claim 1, wherein the anaerobic reactor system effluent distribution pipe (25) comprises an anaerobic effluent/circulating reflux distribution pipe (44) vertically arranged in the homogenization adjustment tank (1), an anaerobic effluent pipe (46) connected with the lower part of the anaerobic effluent/circulating reflux distribution pipe (44), an effluent distribution vertical pipe (41) connected with the effluent end of the anaerobic effluent pipe (46) and vertically arranged, a waste gas discharge port (43) arranged at the top end of the effluent distribution vertical pipe (41), and an anaerobic system water outlet (42) arranged at the upper side part of the effluent distribution vertical pipe (41).

5. The external circulation granular sludge anaerobic reactor system with large height-diameter ratio according to claim 1, wherein the pan-shaped pulse water distribution system (18) comprises a pan-shaped sludge hopper (207) which is arranged at the inner lower part of the anaerobic reactor (19) and supported and fixed by a side wall supporting pipe (205) which is vertically arranged, and a plurality of water distributors which are arranged from top to bottom in a parallel tangential direction and are arranged around the inner wall of the pan-shaped sludge hopper (207);

the water distributor comprises a water distribution pipe (204) which is arranged on the inner wall of the pan-shaped sludge hopper (207) and is arranged in a tangential direction parallel to the top down, water distribution slits (206) which are uniformly distributed on the side part of the water distribution pipe (204) and are provided with openings at the same side, and a connecting pipe (203) which penetrates through the inner wall of the pan-shaped sludge hopper (207) and is communicated with the water distribution pipe (204) and is provided with a flange plate; the opening directions of the water distribution slits (206) on the adjacent water distribution pipes (204) are staggered in the clockwise direction and the anticlockwise direction, and the end of the connecting pipe (203) is connected with a water distribution connecting pipe (202).

6. The external circulation large height-diameter ratio granular sludge anaerobic reactor system as claimed in claim 1, wherein the two-way pulse feeding system (20) comprises a variable frequency anaerobic reactor feed pump (706) connected with the lower side of the homogenizing adjusting tank (1), an anaerobic reactor feed main pipe (705) connected with the variable frequency anaerobic reactor feed pump (706), a water distribution pipe (704) with two flow directions connected with the discharge port of the anaerobic reactor feed main pipe (705), a counterclockwise water inlet branch pipe (709) connected with one flow direction of the water distribution pipe (704), and a clockwise water inlet branch pipe (702) connected with the other flow direction of the water distribution pipe (704); the end part of the anticlockwise water inlet branch pipe (709) is connected with anticlockwise water distribution branch pipes (712) with the same number as the water distribution slits (206) with openings in the anticlockwise direction; the end part of the clockwise water inlet branch pipe (702) is connected with clockwise water distribution branch pipes (701) with the same number as the water distribution slits (206) with clockwise openings;

the anticlockwise water distribution branch pipe (712) is connected with a water distribution connecting pipe (202) connected with the water distribution slit (206) with an opening in the anticlockwise direction, and the clockwise water inlet branch pipe (702) is connected with the water distribution connecting pipe (202) connected with the water distribution slit (206) with an opening in the clockwise direction; a flow control pipeline (710) of the pulse water distribution system is connected between the anticlockwise water inlet branch pipe (709) and the clockwise water inlet branch pipe (702).

7. The external circulation large height-diameter ratio granular sludge anaerobic reactor system as claimed in claim 6, wherein a first automatic control pneumatic butterfly valve (703) is installed on the clockwise water inlet branch pipe (702), a second automatic control pneumatic butterfly valve (708) is installed on the anticlockwise water inlet branch pipe (709), and a manual butterfly valve (711) is installed on the flow control pipeline (710) of the pulse water distribution system; and a flow meter (707) is arranged on the main feed pipe (705) of the anaerobic reactor.

8. The external circulation large height-diameter ratio granular sludge anaerobic reactor system as claimed in claim 1, wherein the primary DUO type full-covered multi-channel three-phase separator (15) is supported by a support frame (54) on the inner side wall of the high-speed anaerobic reactor shell; the first-stage DUO type full-coverage multi-channel three-phase separator (15) is supported by an internal frame supporting plate (57) to form a circular three-phase separator which can meet the requirement of being fully distributed in the whole anaerobic reactor (19) and has a complete section; the first-stage DUO type full-coverage multi-channel three-phase separator (15) comprises a bucket-shaped biogas collection cabin (513), a middle main biogas chamber (524) and two side biogas chambers (515) which are partitioned by the inner space of the middle main biogas chamber; a first separation channel (59) is arranged at the lower side part of the methane collection cabin (513), second separation channels (512) are symmetrically arranged at the upper side part of the first separation channel (59) of the methane collection cabin (513), and an anaerobic sludge falling gap (58) is arranged at the bottom of the methane collection cabin (513); biogas collecting communicating pipes (516) communicated with a biogas collecting cabin (513) and a side biogas chamber (515) are respectively arranged above an inner liquid level (514) in the DUO type full-coverage multi-channel three-phase separator (56), the biogas collecting communicating pipes (516) are communicated with a middle main biogas chamber (524) and then are collected in a biogas collecting header pipe (523), and then are connected with a first-stage DUO type three-phase separator collecting biogas conveying pipe (21) with a flange plate and enter the homogenizing adjusting tank (1).

9. The external circulation large height-diameter ratio granular sludge anaerobic reactor system according to claim 8, wherein the first separation channel (59) and the second separation channel (512) are downward water flow channels with inclination of 45-60 degrees, and are used for completing the functions of methane separation and solid-liquid separation of granular sludge and wastewater; the first separation channel (59) and the second separation channel (512) are both channels formed by parallel plates (525), the interval of 100mm is arranged between the adjacent parallel plates (525), and the parallel plates (525) are supported by an internal frame support plate (57) to keep the spacing between the parallel plates and be integrally fixed.

10. The external circulation granular sludge anaerobic reactor system with the large height-diameter ratio according to claim 1, wherein the upper part of the anaerobic effluent collecting pipe (11) is transversely and uniformly provided with open holes (111), and the open holes (111) are positioned 200mm below the liquid level in the anaerobic reactor.

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