CN112158950A

CN112158950A - All-round mixed anaerobic reactor of intermittent type formula

Info

Publication number: CN112158950A
Application number: CN202011102956.4A
Authority: CN
Inventors: 靖朝森; 邵婷
Original assignee: Shanghai Fushen Environmental Technology Development Co ltd
Current assignee: Shanghai Fushen Environmental Technology Development Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-01-01

Abstract

The invention discloses an intermittent all-directional mixed anaerobic reactor, and relates to the technical field of water pollution treatment. The invention comprises a reactor shell, a diversion injection pipe, a top material negative pressure suction descending diversion pipe, a material feeding hole, a pumped mixed liquid jet water distribution pipe, a pumped mixed liquid collecting pipe which is transversely arranged at the upper part in the reactor shell through a collecting pipe bracket and is uniformly provided with a pumped port on the surface, a water distribution pipe which is externally connected with the bottom of the pumped mixed liquid jet water distribution pipe, a pumped mixed liquid descending pipe which is connected with the outer end of the pumped mixed liquid collecting pipe and is vertically arranged, and a circulating slag slurry pump which is arranged between the pumped mixed liquid descending pipe and the water distribution pipe. The invention effectively solves the problem of top scum and crusting frequently occurring in the continuous stirring mixing anaerobic reactor, greatly improves the comprehensive mixing and stirring effect in the tank, ensures that the continuous stirring mixing anaerobic reactor operates more stably, has good treatment effect and low operating cost compared with similar anaerobic reactors, and has wide market application prospect.

Description

All-round mixed anaerobic reactor of intermittent type formula

Technical Field

The invention belongs to the technical field of water pollution treatment, and particularly relates to an intermittent all-directional mixed anaerobic reactor.

Background

In recent years, with the wide application of anaerobic technology in China, Continuous Stirred Tank Reactors (CSTR) are widely applied in China, and are mainly applied to anaerobic treatment of livestock and poultry manure, municipal excess biochemical sludge, industrial excess biochemical sludge, kitchen waste, cheese wastewater containing high suspended matters, soybean processing wastewater and the like.

The successful operation of a CSTR anaerobic reactor, in addition to the material's own characteristic requirements, also depends on the following conditions: (1) uniformity of stirring: whether the materials can be fully contacted with anaerobic microorganisms in the reactor, and the materials are subjected to mass transfer and degradation is determined; (2) temperature conditions: the anaerobic digestion temperature adopted conventionally is the optimal temperature of mesophilic anaerobism: 35-37 ℃; (3) pH: the pH value of the mixed material in the anaerobic reactor, the normal operation pH value of the conventional anaerobic reactor: 6.8 to 7.3; wherein, the stirring mode in the anaerobic reactor is the key point of the attention of the anaerobic process, and the aim is to improve the uniform degree of material mixing in the anaerobic reactor to the maximum extent, and several commonly used stirring modes in the current engineering application are as follows: (1) stirring by a mechanical top: the stirring mode is a stirring mode which is generally adopted all the time at the beginning of the process, the process is mature, and the defects that a scum layer is formed at the top of a reactor when wastewater treatment in certain industries is carried out, and the scum layer is crusted and difficult to remove under the condition of long-term operation, so that the rising of biogas and the mixing degree of materials are influenced, the anaerobic treatment efficiency is slowly reduced, and scum at the top needs to be regularly cleaned; (2) mechanical side stirring: the problem of scum layer incrustation can be relieved to a certain extent by arranging the side stirring devices at different heights of the reactor, but the problem is difficult to solve fundamentally; (3) stirring the biogas: the principle of biogas stirring is a gas stripping principle, a guide shell is arranged in an anaerobic reactor, biogas is introduced into the bottom of the guide shell, and is lifted together with mixed materials in the rising process and released at the top of the guide shell, so that a plurality of upper and lower circular flow areas are formed in the reactor to achieve the purpose of mixing the upper and lower materials. This approach still has difficulty solving the problem of top dross.

In order to solve the problem of scum at the top of the CSTR anaerobic reactor in the current engineering application, domestic experts and enterprises also explore a large amount. For example, patent nos.: ZL 200620161616.8 (a device for preventing and eliminating scum incrustation in anaerobic reaction tank) adopts high pressure water pump to return biogas slurry and spray upward on biogas residue layer to break the biogas residue incrustation layer; patent numbers: CN201110232206.3 (fermentation liquid stirring device) describes the design of a measuring stirrer and a feed back guide cylinder to achieve the purpose of uniform mixing of materials; the literature: in Nongganization research 2014, tenth 10 th month, Lvjiaqiang, et al, in the design of crusting and crust breaker for biogas digester, a mechanical crust breaking device is described. There are many other patents and documents trying to solve the practical problems of non-uniform mixing and scum layer encrustation of the current CSTR through process design changes, equipment improvement, device development and the like.

On the basis of the achievement of early experts and enterprises for solving the problems of CSTR anaerobic reactors, the invention improves the mixing effect and the uniformity of the conventional CSTR reactor, thoroughly solves the problem that the process is easy to generate scum crusting layers, and integrates the jet flow mixer into the novel fully-mixed anaerobic reactor, thereby fundamentally solving the biggest problem of the two fully-mixed anaerobic reactors. Meanwhile, on the basis of experience of treating wastewater and high-solid-content organic wastes by using an anaerobic process for many years, a continuous stirring and mixing anaerobic Reactor (CSTR) is converted into an intermittent stirring and mixing anaerobic Reactor (BSTR), and under the operating conditions of intermittent feeding, intermittent stirring and intermittent discharging, the phenomenon of 'short flow' of material feeding can be avoided on one hand; secondly, after the material feeding is mixed with anaerobic microorganisms in the reactor, the reaction time is relatively quiet, which is beneficial to the steady-state operation of the anaerobic reactor; furthermore, by arranging the scum guide device and the scum suction jet flow mixing and stirring strengthening system, the reactor can continuously form a combined mixing effect of horizontal flow along the transverse direction of the tank and vertical flow along the vertical direction of the tank, namely the 360-degree omnibearing intermittent mixing anaerobic reactor described in the invention, which is called 360BSTR anaerobic reactor device for short. The 360BSTR anaerobic reactor mainly comprises a scum suction guide cylinder, a rapid stirring and mixing propeller, a jet pipeline, a scum suction jet flow mixing all-dimensional stirring and strengthening system, a top double-membrane biogas pressure stabilizing cabinet, a bottom sand collection and discharge system and the like.

Disclosure of Invention

The invention provides an intermittent omnibearing mixed anaerobic reactor, which solves the problems.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an intermittent omnibearing mixing anaerobic reactor, which comprises a reactor shell, a diversion injection pipe, a top material negative pressure suction descending guide pipe, a material feed inlet, a pumped mixed liquid jet flow distribution pipe, a pumped mixed liquid collecting pipe, a pumped mixed liquid distributing pipe, a pumped mixed liquid descending pipe, a material feeding inlet, a pumped mixed liquid collecting pipe, a pumped mixed liquid discharging pipe, a material feeding inlet, a material feeding outlet, a material discharging inlet, a material discharging outlet and a material discharging outlet, wherein the diversion injection pipe is arranged on one side of the inner bottom of the reactor shell and is fixedly installed through a support, the top material negative pressure suction descending guide pipe is vertically arranged close to the inner side wall and is vertically arranged, the material feeding inlet is arranged on the side of the reactor shell, the pumped mixed liquid collecting pipe is transversely arranged on the, A circulating slurry pump arranged between the pumping mixed liquid descending pipe and the water distribution pipe;

the diversion injection pipe generates local negative pressure through the operation of a rapid stirring plug flow mixer which is installed by matching a shell sealing structure, a scum layer at the top in the shell of the reactor is sucked to the diversion injection pipe, and the diversion injection pipe is ejected from the set injection direction of the diversion injection pipe by the rapid stirring plug flow mixer;

the floating slag layer on the top in the pumping flow reactor shell of the pumping flow port is collected by a pumping flow mixed liquid collecting pipe, and is conveyed to a pumping flow mixed liquid descending pipe, is driven by a circulating slurry pump to enter a water distribution pipe, and is sprayed out by pumping flow mixed jet mixing nozzles vertically and uniformly distributed on the pumping flow mixed liquid jet water distribution pipe.

Furthermore, the jet direction of the diversion jet pipe forms an included angle of 15-30 degrees with the inner bottom plate of the reactor shell, and the jet forms horizontal mixing propulsion flow along the transverse direction of the tank and vertical rising flow of jet materials.

Furthermore, the jet flow direction of the material mixed liquid induced by the pumping mixed jet flow mixing nozzle is consistent with the material flow direction of the flow guide injection pipe, so that the fluidity of horizontal mixed propulsion flow along the transverse direction of the tank and vertical ascending flow of the injected material is enhanced.

Furthermore, the opening position of the water distribution pipe connected with the pumping mixed liquid jet water distribution pipe is provided with a reduced-diameter type first-stage mixed liquid jet nozzle, the end part of the pumping mixed jet water mixing nozzle is a reduced-diameter type second-stage mixed liquid jet nozzle, and the side part of a mixing cavity between the first-stage mixed liquid jet nozzle and the second-stage mixed liquid jet nozzle is provided with an external material suction inlet.

And further, the sludge and muddy water mixture entering from the pumping mixed liquid jet flow water distribution pipe is sprayed out from the primary mixed liquid jet nozzle through the mixing cavity in the mixed liquid jet flow direction to form negative pressure in the mixing cavity, and after the external material of the pumping mixed jet flow mixing nozzle is sucked in the direction of the sucked mixed liquid flow through the external material suction inlet, the external material is mixed with the material sprayed by the primary nozzle and moves to the secondary mixed liquid jet nozzle along the spraying direction to be sprayed out in the mixed material dispersion flow direction.

Further, the top of the reactor shell is provided with a double-membrane biogas pressure-stabilizing storage cabinet with a pressure-stabilizing air cavity, the double-membrane biogas pressure-stabilizing storage cabinet comprises an outer membrane and an inner membrane, and a biogas space is arranged in the inner membrane.

Further, a discharge hole with a water seal is arranged at the upper side part of the reactor shell.

Further, a bottom sand basin is arranged in the center of the bottom of the reactor shell, and an emptying pipe is connected with the bottom sand basin externally.

Furthermore, a suction port top baffle is arranged on one side of the top material negative pressure suction descending guide pipe in the reactor shell.

Further, the inner side wall of the reactor shell is provided with a vortex-preventing baffle.

Further, a liquid temperature sensor is arranged on the pumping mixed liquid descending pipe.

Furthermore, an ultrasonic level meter is arranged in the pressure stabilizing air cavity.

Compared with the prior art, the invention has the following beneficial effects:

1. have all-round mixture, stirring, homogeneity effect: scum is pumped to the bottom of the reactor by adopting a quick-rotating mechanical impeller and is sprayed along a certain direction, so that horizontal mixed transverse flow is formed at the bottom of the reactor, and sludge and silt at the bottom are prevented from being deposited; the scum suction jet flow mixing and stirring strengthening system solves the problem that the stirring performance of the materials sprayed at the bottom of the upper part in the reactor is attenuated in the horizontal and vertical directions quickly, not only enhances the destruction and suction capacity of the scum at the top, but also keeps high-strength horizontal mixing transverse flow at the upper part in the reactor, and ensures the mixing, mass transfer and stirring performance of the materials outside the tank. Meanwhile, under the action of two-stage scum suction, the BSTR tank forms 'circularly mixed vertical flow from top to bottom and then from bottom to top', so that the mixing and homogenizing effects of the reactor are greatly improved, and the stability and the treatment capacity of the reactor are greatly improved.

2. The problem of scum and crusting at the top of the conventional anaerobic reactor is effectively solved; the secondary scum suction circulation system is the most advantageous of the novel reactor.

3. The jet mixing device is introduced into the full-mixing type anaerobic reactor to enhance the material mixing degree and the scum suction capacity in the anaerobic reactor, and the jet mixing device is the most important design for achieving all-dimensional mixing and stirring of the novel anaerobic reactor.

4. Compared with a continuous mixing and stirring anaerobic reactor (CSTR) which is usually used in engineering application, the intermittent feeding, intermittent pumping, circulating, mixing and stirring and intermittent discharging process operation mode is adopted, so that the operation cost can be saved to a certain extent, the treatment stability of an anaerobic system is improved, and the anaerobic treatment efficiency of materials is not influenced.

Of course, it is not necessary for any product in which the invention is practiced 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 the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an intermittent omnibearing mixing anaerobic reactor according to the present invention;

FIG. 2 is a schematic view of the installation and operation principle of the pumped liquid mixture jet water distribution pipe and the pumped liquid mixture jet mixing nozzle in FIG. 1;

FIG. 3 is a left side view of the structure of FIG. 2;

FIG. 4 is a schematic top flow guide view of FIG. 1;

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

1-reactor shell, 101-suction port top baffle, 102-vortex-preventing baffle, 2-bracket, 3-guide injection pipe, 4-shell sealing structure, 5-rapid stirring and flow-pushing mixer, 6-top material negative pressure suction descending guide pipe, 7-suction material flow direction, 8-injection material vertical ascending flow, 9-support frame, 10-tank liquid level height, 11-scum layer, 12-material inlet, 13-scum flow direction, 14-biogas space, 15-inner film, 16-pressure stabilizing air cavity, 17-outer film, 18-ultrasonic level meter, 19-discharge port, 20-suction port, 21-suction mixed liquid collecting pipe, 211-collecting pipe bracket, 22-suction mixed liquid descending pipe, 23-pumped mixed liquor jet flow water distribution pipe, 24-pumped mixed jet flow mixing nozzle, 241-first-stage mixed liquor jet flow nozzle, 242-mixing cavity, 243-external material suction port, 244-mixed liquor jet flow direction, 245-external material fluid direction, 246-material suction liquid mixed back injection direction, 247-mixed material dispersion flow direction, 248-second-stage mixed liquor jet flow nozzle, 249-water distribution pipe opening, 25-material mixed liquor jet flow injection direction, 26-fixed support, 27-horizontal mixing propulsion flow along tank transverse direction, 28-liquid temperature sensor, 29-circulating slurry pump, 30-water distribution pipe, 31-vent pipe, 32-bottom support and 33-bottom sand settling tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "inner", "bottom", "side", "top", "near", "inner side wall", "another inner side wall", and the like, indicate an orientation or positional relationship only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The intermittent omnibearing mixed anaerobic reactor is mainly suitable for anaerobic digestion treatment of high-solid-content materials, in particular to anaerobic biological treatment of high-concentration high-suspension organic waste liquid containing easily floating light substances in the materials, such as mixed manure and kitchen waste of large-scale pig farms;

referring to fig. 1-4, the intermittent omnibearing mixing anaerobic reactor of the present invention comprises a reactor shell 1, a diversion injection pipe 3 fixedly installed on one side of the bottom in the reactor shell 1 through a bracket 2, a top material negative pressure suction descending draft pipe 6 vertically installed near the top of the diversion injection pipe 3 and communicated with the top of the inner side wall and fixed by a support frame 9, a material feed inlet 12 installed on the side of the reactor shell 1 and having an inner bottom end corresponding to the top opening of the top material negative pressure suction descending draft pipe 6, a pumped mixed liquid jet flow distribution pipe 23 vertically installed on the other inner side wall in the reactor shell 1 and fixedly installed through a bottom support 32 and a fixed bracket 26, a pumped mixed liquid collection pipe 21 transversely installed on the upper portion in the reactor shell 1 through a collection pipe bracket 211 and having a pumped liquid port 20 uniformly distributed on the surface, a water distribution pipe 30 externally connected with the bottom of the pumped mixed liquid jet flow distribution pipe 23, a water distribution pipe 30, A pumping mixed liquid descending pipe 22 which is connected with the outer end of the pumping mixed liquid collecting pipe 21 and is vertically arranged, and a circulating slurry pump 29 which is arranged between the pumping mixed liquid descending pipe 22 and the water distribution pipe 30; the flow direction 7 of the sucked materials in the top material negative pressure suction descending guide pipe 6 is from top to bottom; the bracket 2 is used for supporting an external jet pipeline of the rapid stirring and plug flow mixer and preventing the negative pressure suction jet pipe from shifting or shaking; the guide injection pipe 3 forms local negative pressure when running by means of the rapid stirring plug flow mixer, scum at the top of the BSTR is sucked to the guide injection pipe and is sprayed out from the injection pipe along a set injection direction by the rapid stirring plug flow mixer 5 which rotates rapidly, and 'horizontal mixing plug flow along the tank' is formed in the BSTR reactor, so that scum mixed liquor sucked from the top of the reactor is fully mixed with anaerobic sludge at the bottom of the reactor and subjected to mass transfer, and the purposes of uniformly mixing materials and degrading organic pollutants are achieved. The rapid stirring and pushing flow mixer 5 is driven by a motor outside the tank to rapidly rotate, materials in the diversion injection pipe 3 are rapidly pushed out along the direction of the injection pipe and form local negative pressure inside, under the action of the negative pressure, scum on the top of the tank body and mixed liquid are sucked along the negative pressure of the top material, the top material is sucked along the negative pressure, the mixed liquid descends the diversion pipe 6 and enters the diversion injection pipe 3, and a horizontal jet flow along the tank and a vertical ascending flow of the injected materials are formed, so that the uniform mixing of the materials (containing the scum) in the tank is completed;

the circulating slurry pump 29 is used for pumping scum and top mixed materials to the pumping mixed liquid jet flow water distribution pipe 23 under the action of the slurry pump, and spraying the mixture to the BSTR anaerobic reactor along the set spraying direction through the pumping mixed jet flow mixing nozzle 24, so that the pumping function of the top scum is enhanced, the material mixing and stirring strength and effect of the middle upper part of the BSTR are enhanced, and the sludge-water mass transfer effect and the pollutant removal effect are improved.

Wherein, the flow pumping port 20 is 20-30 cm below the liquid level at the top of the semicircular tank body at the top of the reactor, a plurality of scum and muddy water mixed material pumping ports are arranged, scum at the top of the area is pumped to the flow pumping mixed liquid jet flow water distribution pipe 23 through the flow pumping port by the circulating slurry pump 29 and is sprayed to the anaerobic reactor.

Wherein, the material feed inlet 12 is positioned on the liquid level of the material negative pressure suction descending guide pipe 6 at the top. When the reactor feeds, all pumping actions are stopped, the material is pumped into the liquid surface of the top material negative pressure pumping descending guide pipe 6 from the outside of the tank by the feeding pump, meanwhile, the water seal and the discharge port 19 of the discharge port of the BSTR anaerobic reactor on the other side of the tank discharge the treated material with the same volume as the feeding material out of the BSTR anaerobic reactor (the inner part of the tank body of the discharge port is positioned 1.5-2 m below the liquid surface, the short flow phenomenon can not be formed, namely the phenomenon that part of the feeding material is not treated and is directly discharged from the discharge port can not occur).

Wherein, discharge gate 19 is located jar discharging pipe and is located 1.5 ~ 2m below the liquid level, and outside water seal height sets up water seal pipe and overflow discharging pipe height based on BSTR top marsh gas pressure that sets for. The feeding and discharging of the reactor are in a static feeding mode, and the discharging mode is simultaneously overflowed in the static state, so that the phenomenon of short flow of partial feeding which is not degraded and discharged out of the reactor under the operation condition is effectively avoided.

Wherein, the reactor shell 1 adopts BSTR reactor shell, can adopt civil construction or tank structure (carbon steel anticorrosion welding tank, enamel assembling tank, etc.), and the external heat preservation layer is polyurethane foam or rock wool with thickness of 50mm, and is externally coated with color steel plate. For the traditional mechanical stirring CSTR anaerobic reactor, due to the limitation of a stirring form, the height-diameter ratio of the anaerobic reactor has corresponding requirements, and the height-diameter ratio is generally designed to be 1.2-1.5 so as to adapt to the limitation of a transmission shaft in a mechanical top stirring or side stirring form and the limitation of hydraulic stirring capacity. The 360BSTR anaerobic reactor adopts the negative pressure suction and plug flow mixing device and the suction jet flow circulating mixing stirring strengthening system, and the combined system has the functions of horizontal plug flow mixing and vertical jet flow mixing, so that the requirement of the traditional mechanical stirring on the height-diameter ratio is avoided, the height-diameter ratio can reach 3-8, under the design condition, the mixing mass transfer effect in the anaerobic reactor is not influenced, the treatment effect of the reactor is not influenced, and the fully-mixed anaerobic reactor can be developed to the high altitude, so that the purposes of saving the occupied area and reducing the investment cost are achieved.

The diversion injection pipe 3 generates local negative pressure through the operation of a rapid stirring plug flow mixer 5 which is installed by matching a shell sealing structure 4, a scum layer 11 at the top in the reactor shell 1 is sucked to the diversion injection pipe 3, and the diversion injection pipe is ejected from the set injection direction of the diversion injection pipe 3 by the rapid stirring plug flow mixer 5; the top scum layer 11 is positioned at the position where the liquid level height 10 in the tank is level; the scum layer 11 is formed by the scum layer and the crust layer in the reactor, which is often a gradual forming process, scum floating on the top of the tank body is gradually accumulated if processes and measures for timely treatment are not available, so that a thick crust scum layer is formed, and the normal operation of the reactor and the treatment effect of the anaerobic reactor are seriously influenced. The invention adopts two methods to treat the scum at the top: the scum formed by the rapid stirring and pushing flow mixer 5 is sucked by negative pressure and the top scum is sucked by the circulating scum pump 29, so that the continuous accumulation of the top scum is avoided, and the top scum incrustation phenomenon of other types of anaerobic reactors can not occur.

The scum layer 11 on the top in the pumping reactor shell 1 of the pumping port 20 is collected by a pumping mixed liquid collecting pipe 21, sent to a pumping mixed liquid descending pipe 22, driven into a water distribution pipe 30 by a circulating slurry pump 29 and sprayed out by pumping mixed jet mixing nozzles 24 vertically and uniformly distributed on a pumping mixed liquid jet water distribution pipe 23.

Wherein, the jet direction of the pumping flow mixing jet flow mixing nozzle 24 is consistent with the material flow direction induced by the rapid stirring plug flow mixer 5, and the jet direction is different according to the diameter of the tank body.

Wherein the jet direction of the diversion jet pipe 3 forms an included angle of 15-30 degrees with the bottom plate in the reactor shell 1, and the jet forms horizontal mixing propulsion flow 27 along the transverse direction of the tank and vertical rising flow 8 of the jet material.

Wherein, the jet flow direction 25 of the material mixed liquid induced by the pumping mixed jet flow mixing nozzle 24 is consistent with the material flow direction of the diversion injection pipe 3, and the fluidity of the horizontal mixed propulsion flow 27 along the transverse direction of the tank and the vertical ascending flow 8 of the injected material is enhanced.

Wherein, a reducing-caliber type primary mixed liquid jet nozzle 241 is arranged at the position of a water distribution pipe opening 249 connected with the pumping mixed liquid jet water distribution pipe 23 of the pumping mixed jet mixing nozzle 24, a reducing-caliber type secondary mixed liquid jet nozzle 248 is arranged at the end part of the pumping mixed jet mixing nozzle 24, and an external material suction port 243 is arranged at the side part of the mixing cavity 242 between the primary mixed liquid jet nozzle 241 and the secondary mixed liquid jet nozzle 248.

Wherein, the sludge and mud-water mixture entering from the pumping mixed liquid jet water distribution pipe 23 is ejected outwards from the first-stage mixed liquid jet nozzle 241 through the mixing cavity 242 in the mixed liquid jet direction 244 to form negative pressure in the mixing cavity 242, and the external material of the pumping mixed jet mixing nozzle 24 flows in the external material fluid direction 245 and is sucked in the mixed liquid fluid direction 210 through the external material suction port 243, then is mixed with the material ejected from the first-stage nozzle and is ejected from the second-stage mixed liquid jet nozzle 248 in the mixed material fluid direction 247 after being mixed with the material suction liquid; wherein the dross layer 11 on top of the can forms a dross flow direction 13 opposite to the horizontal mixing motive flow 27 in the lateral direction of the can.

Wherein, the top of the reactor shell 1 is provided with a double-membrane biogas pressure-stabilizing storage cabinet with a pressure-stabilizing air cavity 16, the double-membrane biogas pressure-stabilizing storage cabinet comprises an outer membrane 17 and an inner membrane 15, and a biogas space 14 is arranged in the inner membrane 15; the biogas space 14 is formed by collecting biogas generated by the BSTR anaerobic reactor at the top of the reactor, and a double-membrane biogas pressure stabilizing cabinet device for stabilizing and storing biogas is arranged at the top; the inner membrane 15 is used for isolating methane generated by the BSTR anaerobic reactor and outer membrane pressure-regulating air; the outer membrane 17 is used for forming a pressure regulating chamber, so that air of the inner membrane is output at constant pressure and plays a role in protecting the inner membrane, and the edges of the outer membrane and the inner membrane are connected with the opening of the fermentation tank. The shell of the gas holder protects the inner membrane, and the methane pressure in the BSTR anaerobic reactor is constant.

Wherein, the upper side part of the reactor shell 1 is provided with a discharge hole 19 with water seal.

Wherein, the center of the bottom of the reactor shell 1 is provided with a bottom sand settling tank 33, and the bottom sand settling tank 33 is externally connected with a vent pipe 31; for organic wastes with high solid content, a certain amount of inorganic silt and the like exist in the mixed materials, the silt is often deposited at the bottom of the anaerobic reactor, and if the silt is discharged irregularly, the silt is gradually accumulated for a long time, so that the effective space of the anaerobic reactor is reduced, and the treatment efficiency of the anaerobic reactor is influenced. The hydrodynamic dynamics analysis result of the BSTR anaerobic reactor shows that muddy water in the material can be deposited at the central position of the bottom of the BSTR anaerobic reactor. Therefore, a sand setting tank with the diameter of 1-2 m is conventionally arranged at the center of the bottom of BSTR, and a rotational flow silt discharge pipe is arranged at the bottom of the sand setting tank for periodic sand discharge. The discharge period is 1-4 weeks once according to different sand contents in the materials;

wherein, the bottom sand settling tank 33 is positioned in an area with a diameter of about 1-2 m at the center of the bottom of the BSTR anaerobic reactor and is used for collecting inorganic silt and the like separated after anaerobic degradation. In most of materials with high organic matter concentration, inorganic silt contained in the materials is difficult to separate due to large material viscosity, but after organic matters are subjected to anaerobic treatment, the inorganic silt in the materials can be separated from the materials and gradually deposited at the bottom of an anaerobic reactor. The fully-mixed anaerobic reactor adopts different stirring and mixing modes and different positions for silt deposition. Under the hydraulic condition of the BSTR anaerobic reactor, the sand setting position is the central position of the bottom of the reactor.

Wherein, a suction port top baffle 101 is arranged at one side of the top material negative pressure suction descending guide pipe 6 in the reactor shell 1, the bottom of the suction port top baffle is designed to be 0.5 meter below the liquid level and 0.3 meter above the liquid level, so that the effect of sucking scum by the suction port is improved.

Wherein, the inner side wall of the reactor shell 1 is provided with 2 vortex-proof baffles 102 in total to avoid the formation of vortex in the anaerobic reactor.

Wherein, a liquid temperature sensor 28 is installed on the pumping mixed liquid descending pipe 22.

Wherein, an ultrasonic level meter 18 is arranged in the pressure stabilizing air cavity 16 and is used for measuring the rising height of the inner membrane and preventing the inner membrane from being sucked into the BSTR anaerobic reactor reversely under the low pressure condition.

2-4, the working principle and structure of the 360BSTR anaerobic reactor are further understood;

the scum suction jet mixing and stirring strengthening system is a remarkable characteristic of BSTR different from other technologies. The result of fluid mechanics simulation of the diversion injection system only adopting the rapid stirring and mixing propeller shows that the stirring performance of the mixed material brought by the material injected from the bottom is attenuated in the horizontal and vertical directions quickly, and if auxiliary strengthening measures are not provided, the mixing intensity and the scum suction intensity in the anaerobic reactor are weaker, so that the requirements of the full-mixing anaerobic reactor on the stirring and mixing intensity of the material are difficult to meet. The 360BSTR anaerobic reactor disclosed by the invention has the advantages that jet flow mixing is introduced into the design of the anaerobic reactor, and material mixing, stirring, plug flow, scum suction, material circulation and the like in the anaerobic reactor are enhanced, so that the 360BSTR becomes a true all-dimensional mixing and stirring anaerobic reactor.

Has the advantages that:

the 360BSTR is innovated in combination with the experience of anaerobic treatment of high-inherent-organism-content wastewater at home and abroad, so that the mixing and stirring effects of the full-mixing type anaerobic reactor are improved, the problem of scum at the top of the conventional CSTR anaerobic reactor is solved, the operation mode of an anaerobic process is improved, and the like; the novel intermittent all-round mixed anaerobic reactor has the following innovation points and advantages:

The preferred embodiments of the invention disclosed above are intended to be illustrative only. 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 the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an all-round mixed anaerobic reactor of intermittent type formula, a serial communication port, including reactor shell (1), set up bottom one side in reactor shell (1) and through diversion injection pipe (3) of support (2) fixed mounting, communicate with diversion injection pipe (3) top and be close to inside wall vertical setting and by fixed top material negative pressure suction decline honeycomb duct (6) of support frame (9), set up in reactor shell (1) lateral part and interior bottom and corresponding material feed inlet (12) of top material negative pressure suction decline honeycomb duct (6) top opening, vertical setting up in reactor shell (1) another inside wall and through bottom support (32) and fixed bolster (26) fixed mounting's mixed liquid efflux distributing pipe (23) of class of mixed liquor of taking out, through gathering pipe support (211) transversely set up in reactor shell (1) upper portion and surface equipartition be equipped with mixed liquid collection pipe (21) of taking out class mouth (20) of taking out class of mixed liquor of taking out, A water distribution pipe (30) externally connected with the bottom of the pumping mixed liquid jet flow water distribution pipe (23), a pumping mixed liquid descending pipe (22) vertically arranged and connected with the outer end of the pumping mixed liquid collecting pipe (21), and a circulating slurry pump (29) arranged between the pumping mixed liquid descending pipe (22) and the water distribution pipe (30);

the diversion injection pipe (3) generates local negative pressure through the operation of a rapid stirring plug flow mixer (5) which is installed by matching a shell sealing structure (4), a scum layer (11) at the top in the reactor shell (1) is sucked to the diversion injection pipe (3), and the diversion injection pipe is ejected from the set injection direction of the diversion injection pipe (3) by the rapid stirring plug flow mixer (5);

the top scum layer (11) in the pumping reactor shell (1) of the pumping port (20) is collected by a pumping mixed liquid collecting pipe (21), and is sent to a pumping mixed liquid descending pipe (22) and is driven into a water distribution pipe (30) by a circulating slurry pump (29), and is sprayed out by pumping mixed jet mixing nozzles (24) vertically and uniformly distributed on a pumping mixed liquid jet water distribution pipe (23).

2. An all-round mixed anaerobic reactor according to claim 1, characterized in that the jet direction of the diversion jet pipes (3) forms an angle of 15-30 ° with the bottom plate in the reactor shell (1), and the jets form a horizontal mixing propulsion flow (27) in the tank transverse direction and a vertical rising flow (8) of the jetted material.

3. The batch type omnibearing mixing anaerobic reactor according to claim 1, wherein a reduced-caliber primary mixed liquid jet nozzle (241) is arranged at the position of a water distribution pipe opening (249) of the pumping mixed liquid jet mixing nozzle (24) connected with the pumping mixed liquid jet water distribution pipe (23), the end of the pumping mixed liquid jet mixing nozzle (24) is a reduced-caliber secondary mixed liquid jet nozzle (248), and an external material suction port (243) is arranged at the side of the mixing cavity (242) between the primary mixed liquid jet nozzle (241) and the secondary mixed liquid jet nozzle (248).

4. The batch type omnibearing mixing anaerobic reactor according to claim 1, characterized in that sludge and sludge mixture entering from the pumped mixed liquid jet water distribution pipe (23) is ejected outwards from the primary mixed liquid jet nozzle (241) through the mixing chamber (242) in the mixed liquid jet direction (244) to form negative pressure in the mixing chamber (242), and after external material is sucked in from the pumped mixed liquid jet mixing nozzle (24) through the external material suction port (243) in the mixed liquid suction direction (210), the external material is mixed with the material ejected from the primary nozzle and then is ejected from the secondary mixed liquid jet nozzle (248) in the mixed material dispersion direction (247) after being mixed with the material suction liquid.

5. An intermittent omnibearing mixing anaerobic reactor according to claim 1, characterized in that a double-membrane biogas pressure-stabilizing storage cabinet with a pressure-stabilizing air chamber (16) is arranged at the top of the reactor shell (1), the double-membrane biogas pressure-stabilizing storage cabinet comprises an outer membrane (17) and an inner membrane (15), and a biogas space (14) is arranged in the inner membrane (15).

6. An intermittent omnibearing mixing anaerobic reactor according to claim 1, characterized in that the upper side of the reactor shell (1) is provided with a discharge port (19) with a water seal; the reactor is characterized in that a bottom sand settling tank (33) is arranged in the center of the bottom of the reactor shell (1), and the bottom sand settling tank (33) is externally connected with an emptying pipe (31).

7. An all-round mixed anaerobic reactor of batch type according to claim 1, characterized in that a suction port top baffle (101) is arranged in the reactor shell (1) at one side of the top of the draft tube (6) for the material to fall by negative pressure suction.

8. An intermittent all-round mixing anaerobic reactor according to claim 1, characterized in that the reactor shell (1) is provided with vortex-proof baffles (102) on the inner side wall.

9. An all-round mixed anaerobic reactor according to claim 1, characterized in that the pumped-flow mixed liquor downcomer (22) is equipped with a liquid temperature sensor (28).

10. An intermittent all-directional mixing anaerobic reactor according to claim 1, characterized in that an ultrasonic level gauge (18) is installed in the stabilized air chamber (16).