CN105347478B - A kind of anaerobic digester of high-efficiency low energy consumption and its application - Google Patents

A kind of anaerobic digester of high-efficiency low energy consumption and its application Download PDF

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Publication number
CN105347478B
CN105347478B CN201510805527.6A CN201510805527A CN105347478B CN 105347478 B CN105347478 B CN 105347478B CN 201510805527 A CN201510805527 A CN 201510805527A CN 105347478 B CN105347478 B CN 105347478B
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order reaction
reaction room
room
anaerobic
connecting tube
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CN105347478A (en
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武创
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C02F3/286—Anaerobic digestion processes including two or more steps
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C02F3/2866—Particular arrangements for anaerobic reactors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention provides a kind of anaerobic digester of high-efficiency low energy consumption, including first order reaction room, second order reaction room and third-order reaction room, second order reaction room to be arranged between first order reaction room and third-order reaction room；First order reaction room and third-order reaction chamber interior are equipped with three phase separator, second order reaction chamber interior is provided with agitator, first order reaction room bottom is provided with water inlet pipe, connected between first order reaction room and second order reaction room top by connecting tube one, connected between second order reaction room and third-order reaction room bottom by connecting tube two, third-order reaction room top is provided with outlet pipe, and first order reaction room, second order reaction room connect collecting methane pipe with third-order reaction ceiling portion.The anaerobic digester combines the characteristics of up-flow anaerobic reactor and continuous agitation reactor, and there is multilevel hierarchy, sludge can be made farthest to be degraded and digested in anaerobic reactor, less electrical energy is used only during operation simultaneously, more biogas can be produced, more complete due to reacting, its caused sludge quantity is also less.

Description

A kind of anaerobic digester of high-efficiency low energy consumption and its application
Technical field
The invention belongs to energy environment protection technical field, and in particular to a kind of anaerobic digester of high-efficiency low energy consumption and its should With.
Background technology
At present, for anaerobic digestion, there are technology and the application of many correlations.As up-flow anaerobic reactor has anaerobism mistake Filter and the dual characteristicses of anaerobic activated sludge method, disposal ability is big, is applicable not only to high concentrated organic wastewater, is equally applicable to low Concentration organic wastewater, without special mixing plant, structure, operation oam are relatively easy, and efficiency high, energy consumption is low, Low cost；Continuous-stirring reactor then realizes successive reaction, has saved the time of charging and charging, and reaction is realized by stirring The abundant haptoreaction of thing.However, due to the structure of single up-flow anaerobic reactor and continuous-stirring reactor, reaction bar The limitation of part etc., hydraulic detention time therein is insufficient, and the precipitation of debirs is insufficient in sewage, causes its gas producing efficiency not Enough ideals, thus, its disposal ability and biogas yield are limited, and reaction not exclusively causes the waste of material.
The present invention combines up-flow anaerobic reactor and continuous-stirring reactor, is formed a kind of new, more efficient Anaerobic reactor, higher reaction efficiency can be possessed in the case of with traditional anaerobic reactor same volume.
The content of the invention
The purpose of the present invention is to overcome the limitation of structure, the reaction condition of existing single anaerobic reactor etc., and it is handled The problem of ability and biogas yield are limited, and reaction not exclusively causes the waste of material.
Therefore, the invention provides a kind of anaerobic digester of high-efficiency low energy consumption, including first order reaction room, second order reaction room With third-order reaction room；
The first order reaction room and third-order reaction chamber interior are equipped with three phase separator, and the second order reaction chamber interior is provided with Agitator, first order reaction room bottom are provided with water inlet pipe, and the first order reaction room and second order reaction room passes through company between top Adapter one connects, and connecting tube one is arranged on the top of three phase separator in first order reaction room, second order reaction room and third-order reaction room Connected between bottom by connecting tube two, connecting tube two is arranged on the lower section of three phase separator in third-order reaction room, the three-level Reative cell top is provided with outlet pipe, and the first order reaction room, second order reaction room and the conducting of third-order reaction ceiling portion are provided with biogas Collecting pipe.
Further, it is provided with double-deck locking at the top of above-mentioned first order reaction room, second order reaction room and third-order reaction room Well lid.
Further, above-mentioned first order reaction room, second order reaction room and third-order reaction room use concrete structure or brick knot Structure.
Further, the three phase separator in above-mentioned first order reaction room and third-order reaction room is demountable structure.
Further, above-mentioned three phase separator is arranged on the middle part of first order reaction room and third-order reaction room.
Further, above-mentioned water inlet pipe, connecting tube one, adapter two and outlet pipe setting height(from bottom) are respectively reative cell height 0.1 times, 0.85 times, 0.1 times and 0.85 times position.
In addition, present invention also offers the application of the anaerobic digester of above-mentioned high-efficiency low energy consumption, comprise the following steps：
1) water is entered in first order reaction room by water inlet pipe and carries out anaerobic reaction, produce the mixing of biogas, sewage, sludge Thing；The three phase separator that biogas, sewage, mud mixture pass through in first order reaction room is separated, and the biogas isolated passes through The collecting methane pipe in first order reaction ceiling portion is collected, and sewage reaches the top of first order reaction room by three phase separator, and sludge sinks Enter first order reaction room bottom, continue anaerobic reaction.
2) sewage on the top of first order reaction room reaches flooding after stream height for connecting tube one and enters two from connecting tube one Order reaction room, anaerobic reaction is carried out under the stirring of agitator and produces biogas, biogas is received by the biogas in second order reaction ceiling portion Collector is collected, and connecting tube two of the reacted sewage then from second order reaction room bottom flows out.
3) sewage that connecting tube two flows out enters third-order reaction room and carries out anaerobic reaction, produce biogas, sewage, sludge it is mixed Compound；The three phase separator that biogas, sewage, mud mixture pass through in third-order reaction room is separated, and biogas is anti-by three-level The collecting methane pipe in ceiling portion is answered to collect, the top that sewage reaches third-order reaction room by three phase separator is discharged from outlet pipe, Sludge sinks to third-order reaction room bottom.
Further, the anaerobic reaction time is 7 days in above-mentioned first order reaction room, second order reaction room and third-order reaction room, Reaction temperature is 30~55 DEG C.
Further, above-mentioned steps 2) in agitator a diameter of second order reaction room diameter 20%~50%, agitator Rotating speed is 40r/min~80r/min.
Compared with prior art, beneficial effects of the present invention：
(1) anaerobic digester of this high-efficiency low energy consumption provided by the invention uses third-order reaction structure by up-flow anaerobism Reactor and continuous-stirring reactor combine, and have longer hydraulic detention time, react more complete, caused methane quantity Greatly, residual sludge quantity is few, and sewage is farthest degraded and digested.
(2) anaerobic digester of this high-efficiency low energy consumption provided by the invention can with the single anaeroic digestor phase of tradition In the case of same volume and energy consumption, there is provided higher reaction efficiency, so as to produce more biogas.
Brief description of the drawings
Fig. 1 is the structural representation of the anaerobic digester of high-efficiency low energy consumption of the present invention.
Fig. 2 is the schematic top plan view for splitting rear upper part in Fig. 1 along A-A directions.
Fig. 3 is the schematic top plan view for splitting posterior portion in Fig. 1 along B-B directions.
Description of reference numerals：1st, first order reaction room；2nd, second order reaction room；3rd, third-order reaction room；4th, water inlet pipe；5th, three-phase separate From device；6th, connecting tube one；7th, agitator；8th, connecting tube two；9th, outlet pipe；10th, well lid；11st, collecting methane pipe.
Embodiment
Embodiment 1：
In order to overcome the limitation of the structure of existing single anaerobic reactor, reaction condition etc., its disposal ability and biogas Yield is limited, reacts the problem of not exclusively causing the waste of material, present embodiments provide High-efficiency low energy consumption anaerobic digester, including first order reaction room 1, second order reaction room 2 and third-order reaction room 3, the one-level be anti- To answer and three phase separator 5 is equipped with inside room 1 and third-order reaction room 3, the inside of the second order reaction room 2 is provided with agitator 7, and described one The bottom of order reaction room 1 is provided with water inlet pipe 4, is connected between the top of the first order reaction room 1 and second order reaction room 2 by connecting tube 1 Logical, connecting tube 1 is arranged on the top of three phase separator 5 in first order reaction room 1, second order reaction room 2 and the bottom of third-order reaction room 3 Between connected by connecting tube 28, connecting tube 28 is arranged on the lower section of three phase separator 5 in third-order reaction room 3, the three-level The top of reative cell 3 is provided with outlet pipe 9, and the first order reaction room 1, second order reaction room 2 and the conducting of the top of third-order reaction room 3 are provided with Collecting methane pipe 11.
The application process of the anaerobic digester of the high-efficiency low energy consumption specifically comprises the following steps：
1) water is entered in first order reaction room 1 by water inlet pipe 4 and carries out anaerobic reaction, produce biogas, sewage, sludge it is mixed Compound；The three phase separator 5 that biogas, sewage, mud mixture pass through in first order reaction room 1 is separated, the biogas isolated Collected by the collecting methane pipe 11 at the top of first order reaction room 1, sewage reaches the upper of first order reaction room 1 by three phase separator 5 Portion, sludge sink to the bottom of first order reaction room 1, continue anaerobic reaction.
2) sewage on the top of first order reaction room 1 reaches flooding after stream height for connecting tube 1 and entered from connecting tube 1 Second order reaction room 2, anaerobic reaction is carried out under the stirring of agitator 7 and produces biogas, the natural pond that biogas passes through the top of second order reaction room 2 Gas collecting pipe 11 is collected, and reacted sewage then flows out from the connecting tube 28 of the bottom of second order reaction room 2.
3) sewage that connecting tube 28 flows out enters third-order reaction room 3 and carries out anaerobic reaction, produces biogas, sewage, sludge Mixture；The three phase separator 5 that biogas, sewage, mud mixture pass through in third-order reaction room 3 is separated, and biogas passes through three The collecting methane pipe 11 at the top of order reaction room 3 is collected, and sewage reaches the top of third-order reaction room 3 from going out by three phase separator 5 Water pipe 9 is discharged, and sludge sinks to the bottom of third-order reaction room 3.
Wherein, the anaerobic reaction time is 7 days in first order reaction room 1, second order reaction room 2 and third-order reaction room 3, reaction temperature Degree is 30~55 DEG C.And in step 2) a diameter of diameter of second order reaction room 2 of agitator 7 20%~50%, agitator 7 turn Speed is 40r/min~80r/min.
It is oxygen-free environment in above-mentioned first order reaction room 1, second order reaction room 2 and third-order reaction room 3, in order to ensure that anaerobism disappears Change the gas producing efficiency in pond, it is necessary to carry out the seal operation of anaerobic digester.The first order reaction room 1, second order reaction room 2 and three-level Reative cell 3 uses concrete structure or brickwork construction.
As a preferred embodiment, above-mentioned three phase separator 5 is arranged on first order reaction room 1 and third-order reaction room 3 Middle part.The water inlet pipe 4, connecting tube 1, adapter 28 and the setting height(from bottom) of outlet pipe 9 be respectively 0.1 times of reative cell height, 0.85 times, 0.1 times and 0.85 times position.
In addition, in order that the sealing effectiveness of first order reaction room 1, second order reaction room 2 and third-order reaction room 3 is more preferable, described one The top of order reaction room 1, second order reaction room 2 and third-order reaction room 3 is provided with double-deck locking well lid 10, and usually well lid 10 is in Sealing state, if necessary can be as the manhole drawn clearly.
And into first order reaction room 1 and the bottom of third-order reaction room 3, the first order reaction room during for the ease of manually drawing clearly 1 and third-order reaction room 3 in three phase separator 5 be demountable structure.
Embodiment 2：
On the basis of embodiment 1, it is assumed that 1500 families, the II class ordinary residence cell of the people of total population 5000, daily Sewage quantity is 20L/ people d per capita, and excrement amount is 0.4kg/ people d per capita daily.The methane-generating pit designed using embodiment 1, through meter Calculate, processing sewage volume is:
V=1.2·N·α·a·T·(1-b)·K·m/[1000×(1-C)]
=1.2×5000×0.7×0.4×21×(1-0.95) ×1.2×0.8/[1000× (1-0.9)]
= 16m3。
In formula：N- cell numbers, 5000；
α-community resident is in probability of going to toilet, and 0.7；
A- produces excrement amount, 0.4kg for each person every day；
T- anaerobic digestion reaction vessels are drawn clearly the cycle, 21d；
Reduction in bulk coefficient after K- sludge fermentations, 0.8；
M- leaves the percentage of defeated sludge after drawing clearly, and 1.2；
B- enter anaerobic digester concentration of wastewater, 0.95；
C- goes out the concentration of wastewater of anaerobic digester, and 0.9.
The anaerobic digester designed using the present invention, unit excrement, which produces methane quantity, can reach 0.32m3/ kg, higher than biography 0.28 m of system anaerobic digester3/ kg gas production, it is 570m that anaerobic digester of the present invention averagely produces methane quantity daily3.Stirring Device motor uses Y801-2 motor, power N=0.75kW, consumes energy for 18kWh/d.And conventional anaerobic digestion pond, equally handling Under the scale of water, volume 16m3, by consulting related data, it is about 480m to produce methane quantity daily3, because traditional reactor is One whole reactor, therefore, anaerobic digester diameter are about twice of second order reaction room diameter in the present invention, so, it is stirred The diameter of device blade is also about twice of mixing arm diameter in second order reaction room, in order to equally reach optimal mixing speed, It is about 72kWh/d that it, which consumes energy, four times of agitator power consumption as of the present invention.
Therefore, the anaerobic digester of this high-efficiency low energy consumption provided by the invention is compared with traditional anaerobic digester, Under the conditions of same volume sewage load, the present invention has higher biogas output, relatively low power consumption.
In summary, the anaerobic digester of this high-efficiency low energy consumption provided by the invention will be flowed up using third-order reaction structure Formula anaerobic reactor and continuous-stirring reactor combine, and reaction is more complete, and caused methane quantity is big, and residual sludge quantity is few, dirty Water is farthest degraded and digested；With the single anaeroic digestor of tradition in the case of identical volume and energy consumption, tool There is higher reaction efficiency, produce more biogas.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.

Claims (9)

  1. A kind of 1. anaerobic digester of high-efficiency low energy consumption, it is characterised in that：Including first order reaction room (1), second order reaction room (2) and Third-order reaction room (3)；
    Three phase separator (5), the second order reaction room (2) are equipped with inside the first order reaction room (1) and third-order reaction room (3) Inside is provided with agitator (7), and first order reaction room (1) bottom is provided with water inlet pipe (4), the first order reaction room (1) and two level Connected between reative cell (2) top by connecting tube one (6), connecting tube one (6) is arranged on first order reaction room (1) interior three phase separation The top of device (5), connected between second order reaction room (2) and third-order reaction room (3) bottom by connecting tube two (8), connecting tube two (8) lower section of third-order reaction room (3) interior three phase separator (5) is arranged on, third-order reaction room (3) top is provided with outlet pipe (9), the first order reaction room (1), second order reaction room (2) and the conducting of third-order reaction room (3) top are provided with collecting methane pipe (11)。
  2. 2. the anaerobic digester of high-efficiency low energy consumption as claimed in claim 1, it is characterised in that：The first order reaction room (1), two Double-deck locking well lid (10) is provided with the top of order reaction room (2) and third-order reaction room (3).
  3. 3. the anaerobic digester of high-efficiency low energy consumption as claimed in claim 1, it is characterised in that：The first order reaction room (1), two Order reaction room (2) and third-order reaction room (3) use concrete structure or brickwork construction.
  4. 4. the anaerobic digester of high-efficiency low energy consumption as claimed in claim 1, it is characterised in that：The first order reaction room (1) and Three phase separator (5) in third-order reaction room (3) is demountable structure.
  5. 5. the anaerobic digester of high-efficiency low energy consumption as claimed in claim 4, it is characterised in that：The three phase separator (5) sets Put the middle part in first order reaction room (1) and third-order reaction room (3).
  6. 6. the anaerobic digester of high-efficiency low energy consumption as claimed in claim 1, it is characterised in that：The water inlet pipe (4), connecting tube One (6), adapter two (8) and outlet pipe (9) setting height(from bottom) are respectively 0.1 times, 0.85 times, 0.1 times and 0.85 of reative cell height Times position.
  7. 7. the application of the anaerobic digester of the high-efficiency low energy consumption as described in any one of claim 1~6, it is characterised in that：Including Following steps：
    1) water is entered by water inlet pipe (4) and anaerobic reaction is carried out in first order reaction room (1), produce biogas, sewage, sludge it is mixed Compound；The three phase separator (5) that biogas, sewage, mud mixture pass through in first order reaction room (1) is separated, and is isolated Biogas is collected by collecting methane pipe (11) at the top of first order reaction room (1), and it is anti-that sewage by three phase separator (5) reaches one-level The top of room (1) is answered, sludge sinks to first order reaction room (1) bottom, continues anaerobic reaction；
    2) sewage on the top of first order reaction room (1) reach connecting tube one (6) flood stream height after enter from connecting tube one (6) Enter second order reaction room (2), anaerobic reaction is carried out under the stirring of agitator (7) and produces biogas, biogas passes through second order reaction room (2) The collecting methane pipe (11) at top is collected, and reacted sewage then flows from the connecting tube two (8) of second order reaction room (2) bottom Go out；
    3) sewage of connecting tube two (8) outflow enters third-order reaction room (3) and carries out anaerobic reaction, produces biogas, sewage, sludge Mixture；The three phase separator (5) that biogas, sewage, mud mixture pass through in third-order reaction room (3) is separated, and biogas leads to The collecting methane pipe (11) crossed at the top of third-order reaction room (3) is collected, and sewage reaches third-order reaction room by three phase separator (5) (3) top is discharged from outlet pipe (9), and sludge sinks to third-order reaction room (3) bottom.
  8. 8. the application of the anaerobic digester of high-efficiency low energy consumption as claimed in claim 7, it is characterised in that：The first order reaction room (1), the anaerobic reaction time is 7 days in second order reaction room (2) and third-order reaction room (3), and reaction temperature is 30~55 DEG C.
  9. 9. the application of the anaerobic digester of high-efficiency low energy consumption as claimed in claim 7, it is characterised in that：Stirred in the step 2) The 20%~50% of a diameter of second order reaction room (2) diameter of device (7) is mixed, the rotating speed of agitator (7) is 40r/min~80r/min.
CN201510805527.6A 2015-11-20 2015-11-20 A kind of anaerobic digester of high-efficiency low energy consumption and its application Active CN105347478B (en)

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CN109628274A (en) * 2018-12-28 2019-04-16 河南恒天久大实业有限公司 A kind of multistage cellular-type full mixed anaerobic reaction device

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