CN106434296A - Integrated dry-wet anaerobic digestion device - Google Patents
Integrated dry-wet anaerobic digestion device Download PDFInfo
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Abstract
The invention discloses an integrated dry-wet anaerobic digestion device. The integrated dry-wet anaerobic digestion device comprises a digestion tank, and a feed pipe and a bottom sullage discharge pipe are arranged at the bottom of the digestion tank. The integrated dry-wet anaerobic digestion device is characterized in that a dry anaerobic region, a three-phase separation region and a wet anaerobic region are arranged in the digestion tank from bottom to top; a stirrer is arranged in the dry anaerobic region and carries out material stirring, large-size organic materials are decomposed into small-size materials in the dry anaerobic region, and a great number of biogas bubbles are generated; the large-size solid materials return to the dry anaerobic region through the three-phase separation region, and the small-size materials and liquid phase enter the wet anaerobic region; a biogas aerator pipe is arranged in the wet anaerobic region, an upper discharge pipe is arranged on the upper portion of the wet anaerobic region, water is output through the upper discharge pipe in an overflow mode, the biogas generated under the anaerobic condition enters a top air chamber in the upper portion of the wet anaerobic region, and a top biogas pipe is arranged at the top of the top air chamber. The integrated dry-wet anaerobic digestion device is high in organic matter degradation rate, high in biogas content, low in biogas residue yield, high in outlet water quality, capable of automatically and continuously producing biogas with high-concentration organic solid waste and particularly suitable for anaerobic digestion production of the organic materials which are low in water content and high in impurity content.
Description
Technical field
The invention belongs to organic materials processing technology field, it is related to a kind of anaerobic digestion device of organic materials, specifically relates to
And a kind of integral type dry and wet anaerobic digestion device.
Background technology
Organic waste of the present invention include food garbage, rubbish from cooking, municipal sludge, fowl and animal excrement, food market rubbish,
The high concentration organic solid castoffs such as the expired food of supermarket, food processing garbage, distiller grains, agriculture organic solid castoff due to
Classification mechanism is not perfect in China, and traditional organic waste is generally using landfill, burning or aerobic compost processing mode.Due to can
Using the restriction in soil, landfill is faced with more and more difficult location problem in China；Although burn to obtain preferably subtracting
Quantification effect, but the higher organic waste of moisture content often makes burning cost greatly increase；Organic waste compost is existing in China
Upper one-hundred-year history, but it has some row problems such as odor pollution, product outlet, leads to the aerobic compost cannot thorough effectively solving
Extensive organic waste centrally disposes problem.
And organic waste can be turned waste into wealth by anaerobic digestion product natural pond technology, the biogas that it produces belongs to reproducible biomass
The energy, belongs to the new forms of energy that country encourages the substitute fossil fuels of development, and in the epoch of world's energy scarcity, this puts particularly heavy
Will.Anaerobic digestion techniques can be divided into dry type according to the difference of charging solid content（Solid content 15-40%）And wet type（Solid content ＜
15%）Ferment two classes.
Dry anaerobic digestion to input and output material and fermentation stirring etc. equipment requirements of a relatively high, at present this core technology substantially with
Based on external import, mainly there are VALORGA, Belgian DRANCO, the KOMPOGAS of Switzerland and the German BTV technique of France.
Dry anaerobic digestion is intended to keep the sticky solid state shape of organic waste to carry out fermentation gas, and sand setting and scum silica frost cannot be in digestion
Layering in device, charging particle diameter 50mm about, it is low to pre-processing requirements.Therefore, not only can be significantly using dry anaerobic digestion
Shorten pretreating process flow process, and this technique is not required to add water, follow-up biogas slurry dehydration and cost of sewage disposal can be significantly reduced, by
In being digested using high load capacity, its fermentation necessary volume is little compared with wet type anaerobic digestion.But dry anaerobic digestion mass-transfer efficiency is wetter
Formula is low, and high load capacity digestion effluent quality is poor, and follow-up sewage disposal difficulty is big.
Traditional wet anaerobic digestion device includes CSTR, UASB, UBF, IC technique etc..UASB, UBF, IC technique is then in height
Concentration organic wastewater obtains more application in processing, and its common advantage is that organic matter degradation rate is high, and effluent quality is preferable.But it is wet
Formula anaerobic digestion is to charging moisture content and charging（Particle diameter is typically smaller than 8mm）Require of a relatively high, and UASB, IC anaerobic reactor
In fixed three phase separator easily blocked by high concentration material, UBF filler also due to blockage problem, need to strictly control into
Material impurity content.CSTR technique requires low compared with other wet type anaerobic digestion process, in recent years in process moisture content to impurity content
More application has been obtained in higher organic materials.
How to give full play to wet type and dry type anaerobism each advantage, traditional handicraft adopts split-type design, i.e. dry type anaerobism
After dehydration, liquid phase enters back into wet type anaerobic digestion for digestion discharging, and its complex process, floor space are big, and need to arrange middle slow
Deposit and dewatering system, because dry type anaerobism adopts full-mixing type digestion method, contain undegradable organic matter in a large number in discharging, through de-
After water system, only liquid phase part enters wet type anaerobic digestion, still contains more undegraded organic matter in dehydration solid phase.
Content of the invention
The purpose of the present invention is the weak point according to above-mentioned existing dry type and wet type anaerobic digestion techniques, provides a kind of fall
The higher organic waste integral type dry and wet anaerobic digestion device of solution efficiency.
To achieve these goals, technical scheme is as follows：A kind of integral type dry and wet anaerobic digestion device, including
Digester, described digestion pot bottom setting feed pipe and bottom scum pipe it is characterised in that inside described digester from the bottom to top
It is respectively provided with dry type anaerobic zone, three-phase separation area and wet type anaerobic zone；
Described dry type anaerobic zone arranges agitator, and material stirring realized by described agitator, and big particle diameter organic materials is in dry type anaerobism
Area is degraded to small particle material, produces a large amount of biogas bubbles simultaneously, and heavy inorganic impurity is discharged by bottom scum pipe；
In described three-phase separation area setting rotary triangle separator and be located at rotary triangle separator above baffle plate, baffle plate with
It is provided with gap between rotary triangle separator, in described three-phase separation area, also set up middle part biogas pipe, a large amount of biogas bubbles rising
So that periphery solid-phase material is increased along digester, isolated by baffle plate and rotary triangle separator, biogas steeps after the air-packing device of middle part
Collected by middle part biogas pipe, big particle diameter solid-phase material is back to dry type anaerobic zone in action of gravity, and small particle and liquid phase are then to starch
The mode of liquid is passed through rotary triangle separator and is entered wet type anaerobic zone with the gap of baffle plate；
Described wet type anaerobic zone includes the biogas aeration tube being arranged on the digestion pot sidewall above described baffle plate and baffle plate, natural pond
Gas aeration tube arranges several solarization air caps, and solarization air cap outgassing direction is in arrange clockwise or counterclockwise simultaneously, enters wet type anaerobism
The serosity in area rotates under the effect of biogas aeration tube in clockwise and counterclockwise directions, and wet type anaerobic zone top arranges upper outlet
Pipe, from the water outlet in an overflow manner of upper outlet pipe, the biogas that anaerobism produces enters the top air plenum above wet type anaerobic zone, top
Plenum roof setting top biogas pipe.
Preferably, described digester is cuboid, and using Reinforced Concrete Structure or steel construction, outer wall is heating and thermal insulation layer, described
Heating and thermal insulation layer includes hot water circulation heated coil pipe, rock wool heat-preservation layer and the outer wall color steel protective layer setting gradually, and makes tank body
Moderate temperature maintains 55 ± 2 DEG C.
Preferably, feed pipe connects charging plunger displacement pump, and bottom scum pipe connects discharging plunger displacement pump, and input and output material passes through post respectively
Plug pump completes.
Preferably, the agitator of dry type anaerobic zone is door case type agitator, and shaft is arranged along digester length direction, by
It is arranged on the Motor drive of side wall, stirring paddle, centered on shaft, is horizontally spaced about the sidepiece in shaft.
Preferably, biogas aeration tube connects methane air blower, and methane air blower air inlet exposes from top air plenum air-breathing, biogas
Trachea is responsible for by aeration and arm forms, and biogas aeration tube arranges solarization air cap at a certain distance, and solarization air cap outgassing direction is in suitable
Hour hands are arranged, make wet type anaerobic zone serosity be in the stirring that turns clockwise.
Preferably, the rotary triangle separator of three-phase separation area setting along jackshaft clockwise or counterclockwise, by pacifying
It is contained in the Motor drive of digestion pot sidewall, described rotary triangle separator is equilateral triangle, and rotary triangle separator is in rotation
During, with baffle plate minimum range 3 ~ 5mm, ultimate range 5 ~ 10mm.
Preferably, described digestion tank top arranges positive/negative pressure protector.
Preferably, described upper outlet pipe adopt angle-inserting type discharge nozzle, described angle-inserting type discharge nozzle with digestion pot sidewall it
Between angle be 40-60 °, this angle-inserting type discharging pipe end and installation for fermenting effectively run liquid level and are not less than 500mm.
Preferably, funnel shaped top scum pipe is set above described wet type anaerobic zone, using gravity overflow manner row
Slag.
Preferably, the rotary triangle separator both sides of three-phase separation area are symmetrically arranged with sloping baffle, described sloping baffle
Be in 45 ° of inclination angles with digestion pot sidewall, this sloping baffle and rotary triangle separator constitute one group of dynamic three phase separator, baffle plate with
Installation for fermenting side wall forms middle part air chamber, and baffle plate top is provided with biogas stirring pipe, arranges one group or many in described three-phase separation area
Group three phase separator.
Three-phase separation area is not provided with agitating device, using gravitational settling, most of material can be made to be precipitated to dry type anaerobic zone,
The particle diameter of setting rotary triangle separator control entrance wet type anaerobic zone simultaneously, and it is aided with the biogas stirring pipe at baffle plate top, can
Avoid the gap between the feed blocking triangle separator of self-drying type anaerobism and baffle plate, small particle material and liquid phase material then pass through
This gap enters wet type anaerobic zone, carries out wet type anaerobic digestion under biogas stirring action.So, big particle diameter feed back can be made
To dry type anaerobic zone, its digestion time increases compared with conventional dry anaerobic digestion time, thus the degraded of whole system is significantly greatly increased
Efficiency.The integral type dry and wet anaerobic digestion device biogas output that the present invention provides is high, without water consumption, effluent quality be good, biogas residue is produced
Measure low plurality of advantages, achievable solid content 15-40% organic materials Automatic continuous produce natural pond, and especially suitable moisture content is low, impurity contains
Measure high organic materials anaerobic digestion to produce, additionally, this device is compared with conventional two-piece anaerobic digestion device, its organic matter degradation rate
5 ~ 10% can be improved, biogas output can increase by 10 ~ 15%.
Brief description
Fig. 1 is a kind of schematic cross section of integral type dry and wet anaerobic digestion device of the present invention.
Fig. 2 is a kind of vertical section schematic diagram of integral type dry and wet anaerobic digestion device of the present invention.
Fig. 3 is a kind of rotary triangle separator of integral type dry and wet anaerobic digestion device and the damper status signal of the present invention
Figure.
Fig. 4 is that a kind of integral type dry and wet anaerobic digestion device of the present invention adopts multigroup rotary triangle separator schematic diagram.
In figure comprises：Digester 1, feed pipe 2, door case type agitator 3, rotary triangle separator 4, baffle plate 5, biogas aeration
Pipe 6, positive/negative pressure protector 7, top biogas pipe 9, upper outlet pipe 10, bottom scum pipe 11, top scum pipe 12, heating and thermal insulation
Layer 13, middle part air chamber 14, top air plenum 15, blade stirring trajectory 16, biogas stir trajectory 17, cross water space 18.
Specific embodiment
The invention will be further described to pass through specific embodiment below in conjunction with accompanying drawing, and these embodiments are merely to illustrate
The present invention, is not limiting the scope of the invention.
As shown in Figure 1 and Figure 2, a kind of integral type dry and wet anaerobic digestion device that the present invention provides includes digester 1, described
It is respectively dry type anaerobic zone I, three-phase separation area II, wet type anaerobic zone III from the bottom to top in digester 1.Dry type anaerobic zone I includes
Blade stirring trajectory 16 inclusion region and its bottom section, dry type anaerobic zone I setting feed pipe 2, door case type agitator 3, bottom
Portion's scum pipe 11；Three-phase separation area II includes blade stirring trajectory 16 with up to baffle plate region below, and three-phase separation area II sets
It is equipped with rotary triangle separator 4, baffle plate 5 and its middle part air chamber being formed；Wet type anaerobic zone III includes baffle plate area above, wet type
Anaerobic zone III is provided with biogas aeration tube 6, upper outlet pipe 10, top scum pipe 12, top biogas pipe 9, positive/negative pressure protector
7；Digester 1 outer wall is heating and thermal insulation layer 13, including hot water circulation heated coil pipe, rock wool heat-preservation layer, outer wall color steel protective layer；
Feed pipe 2 connects charging plunger displacement pump, bottom scum pipe 11 connects discharging plunger displacement pump, and biogas aeration tube connects methane air blower；Door
Gate stirrer, rotary triangle separator are respectively by the Motor drive being arranged on side wall.
It is below embodiments of the invention, the present embodiment is specifically related to a kind of integral type dry and wet anaerobic digestion device.
In this embodiment, described digester is cuboid, and using Reinforced Concrete Structure or steel construction, outer wall is heating and thermal insulation layer
13, including hot water circulation heated coil pipe, rock wool heat-preservation layer, outer wall color steel protective layer, installation for fermenting outer wall circulating hot water coil pipe
Arrange from dense to sparse to discharge end along digestion length of tank direction from feed end, heating coil and rock wool heat-preservation thickness degree are according to ought
Ground weather conditions calculate and determine, to compensate charging and the digester tank body thermal loss that brings of radiating, circulating hot water coil pipe passes through
Automatic temperature-adjusting control system, makes that pot temperature is moderate to maintain 55 ± 2 DEG C.
The door case type agitator 3 of dry type anaerobic zone I setting, shaft is arranged along installation for fermenting length direction, by being arranged on
The Motor drive of side wall, stirring paddle, centered on shaft, is horizontally spaced about the sidepiece in shaft.
The rotary triangle separator of three-phase separation area II setting can along jackshaft clockwise or counterclockwise, by being arranged on
The Motor drive of side wall, its triangle separator is equilateral triangle, rotary triangle separator in rotary course, its with baffle plate away from
Diminish again from changing from small to big, by the size of triangle separator and shaft core position are set so as in rotation with baffle plate narrow spacing
From 3 ~ 5mm, ultimate range 5 ~ 10mm.
Three-phase separation area II arranges 45 ° of baffle plates of symmetrical expression, and this baffle plate 5 and rotary triangle separator 4 constitute one group dynamic three
Phase separator（Described three-phase is gas phase, aqueous phase, solid phase）, baffle plate 5 forms middle part air chamber with digester 1 side wall, when carrying mud
Biogas bubble rise to middle part air chamber 14 when, biogas steep（Gas phase）Rupture, its mud carrying（Solid phase）Sink in this region, grain
The less solidliquid mixture in footpath（Based on liquid phase）Then detested by the water space 18 entrance wet type of crossing of rotary triangle separator and baffle plate
Oxygen area III, anaerobic digestion device can arrange one or more groups of dynamic three-phases according to gas production size, anaerobic digestion device size etc.
Separator.
Setting biogas aeration tube 6 in wet type anaerobic zone III, biogas aeration tube 6 is fixed on baffle plate 5 and digester 1 side wall,
Biogas aeration tube connects methane air blower, and, from top air plenum 15 air-breathing, biogas aeration tube is by aeration master for methane air blower air inlet
Pipe and arm composition, biogas aeration tube arranges solarization air cap at a certain distance, and solarization air cap outgassing direction is in arrangement clockwise, makes wet
Formula anaerobic zone serosity is in the stirring that turns clockwise, and the biogas that anaerobism produces enters the top air plenum above wet type anaerobic zone,
Collected by top biogas pipe 9.
Described upper outlet pipe 10 adopts angle-inserting type gravity overflow discharge method, itself angle and installation for fermenting wall between
For 40-60 °, this angle-inserting type discharging pipe end and installation for fermenting effectively run the not little 500mm of liquid level.Bottom scum pipe 11 is even
Connect plunger displacement pump, appointed place is delivered to by plunger pump.
This anaerobic digestion device is by the following method（I.e. principle）Operated：
Input dehydration biogas residue, municipal dewatered sludge, river bottom mud etc. using plunger displacement pump into the tank body of digester 1 and can be used for anaerobism
The material of digestive inoculation, to half tank liquid level, starts outer circulation Hot water heating coils and digester temperature is increased to 55 DEG C, gradually adjust
Examination inlet amount, until anaerobic digestor starts aerogenesis, and reaches design feed loading.Daily maintenance designs inlet amount, charging side
Method is, opening plunger pump, organic materials（Control in 50mm about）It is pumped to dry type anaerobic zone I from digester bottom feed pipe 2.
Organic materials in 25-30 days I time of staying of dry type anaerobic zone, realize material by door case type agitator 3 and stir by dry type anaerobic zone I
Mix, stirrer paddle adopts horizontal interval asymmetrical arrangement centered on shaft（I.e. shaft paddle adopts three blades, angle
60 °, speed of agitator is at 1-2 rev/min；Digestion pot bottom setting bottom scum pipe 11, predominantly discharges the heavys such as sand setting, shell
Inorganic impurity, by the regular deslagging of plunger displacement pump（The deslagging cycle is determined according to heavy inorganic impurity content in material）；Big particle diameter has
Machine material is degraded to small particle material in dry type anaerobic zone I, when it passes through three-phase separation area II, produces a large amount of biogas simultaneously
Bubble, a large amount of biogas bubbles rising make periphery solid-phase material rise along digester, are isolated by baffle plate 5 and rotary triangle separator 4, natural pond
Bubble is collected by middle part biogas pipe 8 after the air-packing device of middle part, and big particle diameter solid-phase material is back to dry type anaerobic zone in action of gravity
I, and small particle and liquid phase then can enter wet type anaerobic zone III, anaerobic digestion by the gap of rotary triangle separator 4 and baffle plate 5
Device can arrange one or more groups of dynamic three phase separators according to gas production size, anaerobic digestion device size etc..Enter wet type
The serosity of anaerobic zone III turns clockwise under biogas aeration tube 6 effect, and biogas aeration tube 6 is fixed on baffle plate 5 and digester 1 side
On wall, biogas aeration tube 6 adopts fish bone like to arrange, is made up of middle main pipe and arm, and arm is every 20cm setting φ 1cm circle
As solarization air cap, perforate direction makes wet type anaerobic zone III current realize turning clockwise, and biogas aeration tube 6 connects biogas air blast in hole
Machine, methane air blower, by top air plenum air inlet, realizes wet type anaerobic zone III continuous stirring, wet type anaerobic zone III by said apparatus
Hydraulic detention time 5-10 days, the biogas that anaerobism produces is collected through top biogas pipe 9, the setting positive/negative-pressure protection of anaerobic digestion tank deck
To protect the safety problem that tank body brings from pressure big ups and downs, wet type anaerobic zone III arranges funnel shaped top deslagging to device 7
Pipe 12, using gravity overflow manner deslagging（Can be according to scum silica frost thickness periodically outer row）, overflow side is passed through by upper outlet pipe 10
Formula realizes daily discharging flow process.The continuous of anaerobic digestor is realized by flow processs such as above-mentioned charging, temperature-compensating, digestion, dischargings
Produce natural pond to run.
The integral type dry and wet anaerobic digestion device biogas output that the present invention provides is high, without water consumption, effluent quality be good, biogas residue
Many advantages, such as yield poorly, achievable solid content 15-40% organic materials Automatic continuous produce natural pond, and especially suitable moisture content is low, impurity
The high organic materials anaerobic digestion of content produces, additionally, this device is compared with conventional two-piece anaerobic digestion device, its organic matter degradation
Rate can improve 5 ~ 10%, and biogas output can increase by 10 ~ 15%.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
Multiple modifications and substitutions all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of integral type dry and wet anaerobic digestion device, including digester, described digestion pot bottom setting feed pipe and bottom are arranged
Slag pipe is it is characterised in that be respectively provided with dry type anaerobic zone, three-phase separation area and wet type anaerobism from the bottom to top inside described digester
Area；
Described dry type anaerobic zone arranges agitator, and material stirring realized by described agitator, and big particle diameter organic materials is in dry type anaerobism
Area is degraded to small particle material, produces a large amount of biogas bubbles simultaneously, and heavy inorganic impurity is discharged by bottom scum pipe；
In described three-phase separation area setting rotary triangle separator and be located at rotary triangle separator above baffle plate, baffle plate with
It is provided with gap between rotary triangle separator, in described three-phase separation area, also set up middle part biogas pipe, a large amount of biogas bubbles rising
So that periphery solid-phase material is increased along digester, isolated by baffle plate and rotary triangle separator, biogas steeps after the air-packing device of middle part
Collected by middle part biogas pipe, big particle diameter solid-phase material is back to dry type anaerobic zone in action of gravity, and small particle and liquid phase are then to starch
The mode of liquid is passed through rotary triangle separator and is entered wet type anaerobic zone with the gap of baffle plate；
Described wet type anaerobic zone includes the biogas aeration tube being arranged on the digestion pot sidewall above described baffle plate and baffle plate, natural pond
Gas aeration tube arranges several solarization air caps, and solarization air cap outgassing direction is in arrange clockwise or counterclockwise simultaneously, enters wet type anaerobism
The serosity in area rotates under the effect of biogas aeration tube in clockwise and counterclockwise directions, and wet type anaerobic zone top arranges upper outlet
Pipe, from the water outlet in an overflow manner of upper outlet pipe, the biogas that anaerobism produces enters the top air plenum above wet type anaerobic zone, top
Plenum roof setting top biogas pipe.
2. integral type dry and wet anaerobic digestion device as claimed in claim 1 it is characterised in that described digester be cuboid,
Using Reinforced Concrete Structure or steel construction, outer wall is heating and thermal insulation layer, and the hot water circuit that described heating and thermal insulation layer includes setting gradually adds
Hot coil, rock wool heat-preservation layer and outer wall color steel protective layer, make that pot temperature is moderate to maintain 55 ± 2 DEG C.
3. integral type dry and wet anaerobic digestion device as claimed in claim 1 is it is characterised in that feed pipe connects charging plunger
Pump, bottom scum pipe connects discharging plunger displacement pump, and input and output material is completed by plunger displacement pump respectively.
4. integral type dry and wet anaerobic digestion device as claimed in claim 1 is it is characterised in that the agitator of dry type anaerobic zone is
Door case type agitator, shaft is arranged along digester length direction, and by the Motor drive being arranged on side wall, stirring paddle is with shaft
Centered on, it is horizontally spaced about the sidepiece in shaft.
5. integral type dry and wet anaerobic digestion device as claimed in claim 1 is it is characterised in that biogas aeration tube connects biogas drum
Blower fan, methane air blower air inlet from top air plenum air-breathing, be responsible for by aeration and arm forms by biogas aeration tube, biogas aeration tube
Solarization air cap is set at a certain distance, and solarization air cap outgassing direction is in arrangement clockwise, makes wet type anaerobic zone serosity be in dextrorotation
Turn stirring.
6. integral type dry and wet anaerobic digestion device as claimed in claim 1 it is characterised in that three-phase separation area setting rotation
Triangle separator along jackshaft clockwise or counterclockwise, by be arranged on digestion pot sidewall Motor drive, described rotation three
Corner separator be equilateral triangle, rotary triangle separator in rotary course, with baffle plate minimum range 3 ~ 5mm, ultimate range 5
~10mm.
7. integral type dry and wet anaerobic digestion device as claimed in claim 1 is it is characterised in that described digestion tank top is just arranged
Negative pressure protector.
8. integral type dry and wet anaerobic digestion device as claimed in claim 1 is it is characterised in that described upper outlet pipe is using tiltedly
Slotting formula discharge nozzle, the angle between described angle-inserting type discharge nozzle and digestion pot sidewall is 40-60 °, this angle-inserting type discharging pipe end
Effectively run liquid level with installation for fermenting and be not less than 500mm.
9. integral type dry and wet anaerobic digestion device as claimed in claim 1 is it is characterised in that above described wet type anaerobic zone
Funnel shaped top scum pipe is set, using gravity overflow manner deslagging.
10. integral type dry and wet anaerobic digestion device as claimed in claim 1 is it is characterised in that the rotation three of three-phase separation area
Corner separator both sides are symmetrically arranged with sloping baffle, described sloping baffle with digestion pot sidewall be in 45 ° of inclination angles, this sloping baffle with
Rotary triangle separator constitutes one group of dynamic three phase separator, and baffle plate and installation for fermenting side wall form middle part air chamber, baffle plate top
It is provided with biogas stirring pipe, one or more groups of three phase separators are set in described three-phase separation area.
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