CN110606560A - Composite anaerobic biological fermentation tank - Google Patents
Composite anaerobic biological fermentation tank Download PDFInfo
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- CN110606560A CN110606560A CN201810619147.7A CN201810619147A CN110606560A CN 110606560 A CN110606560 A CN 110606560A CN 201810619147 A CN201810619147 A CN 201810619147A CN 110606560 A CN110606560 A CN 110606560A
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- water inlet
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- control valve
- flow passage
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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
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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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
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2873—Particular arrangements for anaerobic reactors with internal draft tube circulation
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a combined anaerobic biological fermentation tank, which comprises: an inner flow passage part, the top of which is provided with a first communicating port and the bottom of which is provided with a sewage injection pipe; the middle flow channel part covers the first communication port of the inner flow channel part, the top of the middle flow channel part is provided with a first gas outlet, and the bottom of the middle flow channel part is provided with a second communication port; the outer flow passage part is used for coating the second communication port of the middle flow passage part, the top of the outer flow passage part is provided with a second gas outlet, and the upper section of the outer flow passage part is provided with a regenerated water outlet; and a fixed bed packing filled in the upper section of the outer flow passage part and arranged below the regenerated water outlet of the outer flow passage part; the fixed bed filler is porous filler; by the structure, the purpose of sewage treatment can be achieved by treatment means such as acidification, precipitation, methane generation and the like.
Description
Technical Field
The invention relates to a composite anaerobic biological fermentation tank; in particular to a composite anaerobic biological fermentation tank which can achieve sewage treatment by treatment means such as acidification, precipitation, methane generation and the like.
Background
In the current field of sewage treatment, it is a common approach to utilize the fermentation reaction generated by anaerobic organisms to achieve the effects of sewage purification and sludge reduction. The two-phase anaerobic digestion process mainly comprises the steps of building two independent reactors, and enabling the two reactors to be in the optimal condition by respectively regulating and controlling the operating parameters of an acid production phase and a methane production phase, so that the sewage treatment effect is improved; however, the two-phase anaerobic digestion process is generally divided into three tanks, so that the sewage treatment efficiency is low and the occupied area is too wide.
In view of the above, the inventors of the present invention have conducted active research on the above-mentioned materials, and have conducted many years of experience in research on related products, and have conducted continuous tests and improvements to develop the present invention.
Disclosure of Invention
The invention aims to provide a composite anaerobic biological fermentation tank which can realize sewage treatment by treatment means such as acidification, precipitation, methane generation and the like.
To achieve the above object, the present invention provides a composite anaerobic bio-fermentation tank, comprising: the sewage treatment device comprises an inner flow passage part, a sewage treatment device and a sewage treatment device, wherein the inner flow passage part is provided with a first space, the top of the inner flow passage part is provided with a first communication port, and the bottom of the inner flow passage part is provided with a sewage injection pipe; the middle flow channel part is provided with a second space, the middle flow channel part covers the first communication port of the inner flow channel part, and the second space is communicated with the first space; the top of the middle flow channel part is provided with a first gas outlet, and the bottom of the middle flow channel part is provided with a second communication port; the outer runner part is provided with a third space, the outer runner part covers the second communication port of the middle runner part, and the third space is communicated with the second space; the top of the outer flow passage part is provided with a second gas outlet, and the upper section of the outer flow passage part is provided with a regenerated water outlet; and a fixed bed packing filled in an upper section of the third space of the outer flow path part and disposed below the regenerated water outlet of the outer flow path part; the fixed bed filler is porous filler; by the structure, the purpose of sewage treatment can be achieved by treatment means such as acidification, precipitation, methane generation and the like.
Preferably, the bottom of the inner channel part is provided with a first water distribution plate, so that the mixing effect caused by injecting sewage into the inner channel part can be increased.
Preferably, a tapered portion is disposed at the second communication port of the middle flow passage portion to increase the flow rate of sewage and further increase the sludge deposition.
Preferably, the bottom section of the outer flow passage part is provided with a second water distribution plate which can uniformly distribute water and intercept sludge.
Preferably, a diversion trench is arranged at the inner side of the regenerated water outlet of the outer runner part, so that the regenerated water and gas such as methane in the outer runner part can not be directly discharged from the regenerated water outlet of the outer runner part; when the regenerated water in the outer flow passage part rises to a height exceeding the diversion trench along with the gas such as methane, the regenerated water crosses the diversion trench and is discharged from the regenerated water outlet of the outer flow passage part, and the gas such as methane continues to rise and is discharged from the second gas outlet of the outer flow passage part.
Preferably, a sewage control valve is arranged on the sewage injection pipe; a pressure pump and a check valve are arranged on the sewage injection pipe between the inner runner part and the sewage control valve so as to control the pressure and the flow of the sewage injected into the inner runner part.
Preferably, a return structure is arranged outside the regenerated water outlet of the outer runner part; this backflow structure includes: the first pipe body is communicated with the regenerated water outlet of the outer flow passage part; the first control valve is arranged on the first pipe body; one end of the second pipe body is communicated with the first pipe body between the outer flow passage part and the first control valve, and the other end of the second pipe body is communicated with the sewage injection pipe between the sewage control valve and the pressure pump; the second control valve is arranged on the second pipe body; the structure can achieve the effect of circularly treating sewage.
Preferably, at least one PH sensor is disposed on the inner runner portion, the middle runner portion and/or the outer runner portion for sensing a PH of the wastewater in the inner runner portion, the middle runner portion and/or the outer runner portion.
Preferably, the bottom section of the outer runner part is provided with a second water distribution plate; a sewage control valve is arranged on the sewage injection pipe; a pressure pump and a check valve are arranged on the sewage injection pipe between the inner runner part and the sewage control valve; the sewage injection pipe is provided with a water inlet control structure; this water control structure that intakes includes: the first water inlet control valve is arranged on the sewage injection pipe between the inner runner part and the check valve; one end of the first water inlet control pipe is communicated with the sewage injection pipe between the check valve and the first water inlet control valve, and the other end of the first water inlet control pipe is communicated with the outer runner part above the second water distribution disc; the second water inlet control valve is arranged on the first water inlet control pipe; one end of the second water inlet control pipe is communicated with the first water inlet control pipe, and the other end of the second water inlet control pipe is communicated with the outer runner part below the second water distribution plate; the third water inlet control valve is arranged on the second water inlet control pipe; and a fourth water inlet control valve, which is arranged on the first water inlet control pipe between the sewage injection pipe and the second water inlet control valve; the structure can control the sewage to be injected into the inner runner part or the outer runner part.
Preferably, a PH value adjusting structure is disposed outside the outer flow passage portion; the PH adjusting structure includes: a PH value regulating liquid storage tank, which is provided with a first regulating pipe communicated with the inner flow passage part and/or the outer flow passage part; the pressure pump and the check valve of the PH value adjusting structure are arranged on the first adjusting pipe; by the structure, the PH value of the sewage can be adjusted.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a schematic view of a sewage flow line according to the present invention.
Fig. 3 is a schematic view of a backflow structure provided outside the regenerated water outlet of the outer flow channel portion according to the present invention.
FIG. 4 is a schematic view of the reflux structure of the present invention communicating with the outer flow path portion below the fixed bed packing.
FIG. 5 is a schematic view of a water inlet control structure provided on the sewage injection pipe according to the present invention.
FIG. 6 is a schematic view of the sewage injection pipe of the present invention connected to a cleaning and maintenance structure.
The reference numbers illustrate:
100 composite anaerobic biological fermentation tank
1 inner flow passage part
11 first space
12 first communication port
13 sewage injection pipe
14 first water distribution plate
15 rectifying space
16 sewage control valve
17 pressure pump
18 check valve
19 heat exchanger
2 middle runner part
21 second space
22 first gas outlet
23 second communication port
24 tapered portion
3 outer flow passage part
31 third space
32 second gas outlet
33 outlet for regenerated water
34 second water distribution plate
35 settling space
36 sludge discharge port
37 diversion trench
38 PH value sensor
4 fixed bed packing
5 backflow structure
51 first pipe body
52 first control valve
53 second tube
54 second control valve
55 third tube
56 third control valve
6 water inlet control structure
61 first water inlet control valve
62 first water inlet control pipe
63 second water inlet control valve
64 second water inlet control pipe
65 third water inlet control valve
66 fourth intake control valve
7 PH value adjusting structure
71 PH value regulating solution storage tank
72 first regulating tube
73 pressure pump
74 check valve
75 first regulating control valve
101 water collecting structure
102 cleaning and maintaining structure
Detailed Description
In order to clearly understand the technical solution, the purpose and the effect of the present invention, a detailed description of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 to 2, a composite anaerobic biological fermentation tank 100 of the present invention includes: an inner runner part 1 having a first space 11, a first communication port 12 at the top of the first space 11, and a sewage injection pipe 13 at the bottom of the first space 11; the middle runner part 2 is provided with a second space 21, and the second space 21 covers the first communication port 12 of the inner runner part 1, so that the second space 21 is communicated with the first space 11; the top of the middle flow passage part 2 is provided with a first gas outlet 22, and the bottom of the middle flow passage part 2 is provided with a second communication port 23; and an outer flow passage part 3 having a third space 31, the third space 31 covering the second communication port 23 of the middle flow passage part 2, so that the third space 31 is communicated with the second space 21; the top of the outer flow path part 3 has a second gas outlet 32, and the upper section has a regenerated water outlet 33; and a fixed bed packing 4 filled in an upper section of the third space 31 of the outer flow path part 3 and disposed below the regenerated water outlet 33 of the outer flow path part 3; the fixed bed filler 4 is a porous filler; by the structure, the purpose of sewage treatment can be achieved by treatment means such as acidification, precipitation, methane generation and the like. As will be described in detail below.
The sewage injection pipe 13 of the inner fluid pathway portion 1 may be connected to a water collecting structure 101 as a sewage source. The water collecting structure 101 may be a water collecting structure of sewage such as municipal sewage, livestock sewage, industrial sewage, and the like.
In the first space 11 of the inner flow path portion 1, the sewage flows upward and flows into the second space 21 of the middle flow path portion 2 from the first communication port 12 of the inner flow path portion 1.
A first water distribution plate 14 may be provided at the bottom section of the inner flow path portion 1 to form a rectifying space 15 at the bottom section of the inner flow path portion 1. A plurality of flow openings can be arranged in the first distributor disk 14. The sewage injection pipe 13 injects sewage into the rectification space 15 of the inner flow path part 1, so that the mixing effect caused when the sewage is injected is increased through the first water distribution plate 14, the sewage is more homogeneous, and the acidification efficiency is improved.
In the first space 11 of the inner channel part 1, the sewage may contain natural bacteria such as Clostridium, Vibrio butyricum, Eubacterium, gram negative bacillus, streptococcus, intestinal bacteria, etc., so that the organic matter in the sewage can generate hydrolytic acidification phenomenon, thereby achieving the effect of sludge reduction, and additionally, hydrogen (H) gas, for example, can be generated2) And carbon dioxide (CO)2) And the like, wherein hydrogen is an excellent fuel, the benefit of energy recovery can be obtained. When the sewage in the first space 11 of the inner flow path part 1 overflows from the first communication port 12, the sewage flows into the second space 21 of the middle flow path part 2, and the gas such as hydrogen and carbon dioxide generated by acidification is further raised and discharged from the first gas outlet 22 of the middle flow path part 2, so as to recover the gas such as hydrogen with recovery efficiency.
In the second space 21 of the middle flow passage part 2, the sewage flows downward and flows into the third space 31 of the outer flow passage part 3 from the second communication port 23, and by the design of allowing the sewage to flow downward, relatively heavy sludge in the sewage is precipitated downward and stays at the bottom of the third space 31 of the outer flow passage part 3, while the sewage continues to flow upward in the third space 31 of the outer flow passage part 3.
A tapered portion 24 may be disposed at the second communication port 23 of the middle flow passage portion 2 to increase the flow rate of sewage and further increase the sludge deposition.
In the third space 31 of the outer flow path portion 3, the sewage flows upward and flows out from the regeneration water outlet 33 of the outer flow path portion 3.
A second water distribution plate 34 may be provided at the bottom section of the outer flow path portion 3 to form a settling space 35 at the bottom section of the outer flow path portion 3. A plurality of flow openings can be arranged in the second distributor disk 34. When the sewage flows out from the middle runner part 2, the sewage enters the sedimentation space 35 of the outer runner part 3 so as to be uniformly distributed through the second water distribution plate 34, so that the sewage flowing into the upper part of the second water distribution plate 34 is stable and uniform in speed, the methane generation efficiency is improved, and the sludge with larger volume can be blocked through the second water distribution plate 34. In addition, a sludge discharge port 36 may be formed at the bottom of the outer flow path portion 3 to discharge old sludge.
A fixed bed packing 4 filled in an upper section of the third space 31 of the outer flow path part 3 and disposed below the regenerated water outlet 33 of the outer flow path part 3, which is a porous packing; according to the structure, when sewage flows through the fixed bed filler 4, for example, sludge in the sewage and methane bacteria attached to the sludge are intercepted by the fixed bed filler 4, so that the effects of sewage purification and sludge reduction can be achieved, and the fixed bed filler 4 can be used as a carrier of the methane bacteria, so that the effect of methane generation is improved. Further, a gas such as methane or carbon dioxide generated in the methane-generating reaction can be discharged from the second gas outlet 32 of the outer flow path portion 3, so that a gas having a recovery effect such as methane can be recovered.
The methanobacteria can be natural bacteria in sewage, such as two groups of obligate anaerobic methanogenic bacteria with different physiological properties, one group is H2+CO2Or CO + H2Synthesis of CH4(ii) a The other group is the generation of CH from acetic acid4+CO2Or by splitting the acid into CH4。
A guide groove 37 may be provided inside the regenerated water outlet 33 of the outer flow path portion 3 so that the sewage and gas such as methane in the outer flow path portion 3 are not directly discharged from the regenerated water outlet 33 of the outer flow path portion 3. When the regeneration water in the outer flow path portion 3 rises to a height exceeding the guide groove 37 together with the gas such as methane, the regeneration water passes over the guide groove 37 and is discharged from the regeneration water outlet 33 of the outer flow path portion 3, and the gas such as methane continues to rise and is discharged from the second gas outlet 32 of the outer flow path portion 3. Therefore, the solid is intercepted by the fixed bed filler 4, and the liquid and the gas are separated by the diversion trench 37, so that the effect of solid-liquid-gas three-phase separation can be achieved, and the subsequent treatment is convenient.
As shown in fig. 1 and 3, a sewage control valve 16 may be provided on the sewage injection pipe 13 to control the amount of sewage injected into the inner fluid pathway portion. In addition, a pressure pump 17 and a check valve 18 may be installed on the sewage injection pipe 13 between the inner flow path part 1 and the sewage control valve 16 to control the pressure and flow rate of the sewage injected into the inner flow path part 1, so that the sewage can stably pass through the inner flow path part 1, the middle flow path part 2 and the outer flow path part 3, thereby achieving the purpose of sewage treatment. Also, a heat exchanger 19 may be provided on the sewage injection pipe 13 between the sewage control valve 16 and the water collecting structure 101 to control the temperature of the sewage. The pressurizing pump 17 may be a peristaltic pump, and particularly, a peristaltic pump which intermittently discharges the sewage, so that new sewage is injected from the bottom of the inner fluid pathway portion only when the sewage of the bottom of the outer fluid pathway portion is already at a PH of 7 or more, for example, and the time for intermittently discharging the sewage may be adjusted depending on factors such as the composition of the sewage, environmental factors, the desired treatment degree of the reuse water, and the like.
The manner in which the sewage passes through the inner flow path part 1, the middle flow path part 2, the outer flow path part 3, and the fixed bed packing 4 to obtain the regenerated water can be referred to as an external circulation means. The external circulation means can achieve the purpose of sewage treatment through treatment means such as acidification, precipitation, methane generation and the like, and further achieve the purposes of hydrogen production and methane production. However, the regenerated water discharged from the regenerated water outlet 33 of the outer flow path part 3 after being treated by the external circulation means may not meet the treatment standard, so that a return structure 5 may be further provided in addition to the regenerated water outlet 33 of the outer flow path part 3 to perform the internal circulation means.
The reflow structure 5 includes: a first pipe 51 communicating with the regenerated water outlet 33 of the outer flow path portion 3; and a first control valve 52 disposed on the first tube 51; and a second pipe 53 having one end communicating with the first pipe 51 between the outer flow path portion 3 and the first control valve 52 and the other end communicating with the sewage injection pipe 13 between the sewage control valve 16 and the pressurizing pump 17; and a second control valve 54 disposed on the second tube 53; with this configuration, for example, when the reclaimed water discharged from the reclaimed water outlet 33 of the outer flow path portion 3 does not meet the treatment standard, the internal circulation means for closing the first control valve 52 and the sewage control valve 16 and opening the second control valve 54 is performed to allow the reclaimed water discharged from the reclaimed water outlet 33 of the outer flow path portion 3 to flow into the sewage inlet pipe 13 of the inner flow path portion, thereby achieving the effect of circulating the treated sewage.
As shown in fig. 1 and 4, the reflow structure 5 may further include: a third pipe 55 having one end communicating with the outer flow path part 3 under the fixed bed packing 4 and the other end communicating with the second pipe 53 between the sewage injection pipe 13 and the second control valve 54; and a third control valve 56 provided on the third tube 55; with this structure, for example, in the case where the sewage in the outer flow path portion 3 does not meet the treatment standard, the sewage control valve 16 is closed, and the third control valve 56 is opened, so that the sewage in the outer flow path portion 3 flows out from the third pipe body 55 and flows into the sewage injection pipe 13 of the inner flow path portion, thereby achieving the effect of circularly treating the sewage.
As shown in fig. 1 and 5, a water inlet control structure 6 may be further provided on the sewage injection pipe 13. The water inflow control structure 6 includes: a first water inlet control valve 61 provided on the sewage injection pipe 13 between the inner flow path part 1 and the check valve 18; and a first water inlet control pipe 62, one end of which is communicated with the sewage injection pipe 13 between the check valve 18 and the first water inlet control valve 61, and the other end of which is communicated with the outer flow passage part 3 above the second water distribution plate 34; and a second water inlet control valve 63 provided on the first water inlet control pipe 62; and a second water inlet control pipe 64, one end of which is communicated with the first water inlet control pipe 62, and the other end of which is communicated with the outer runner part 3 below the second water distribution plate 34; and a third water inlet control valve 65 provided on the second water inlet control pipe 64; and a fourth water inlet control valve 66 provided on the first water inlet control pipe 62 between the sewage injection pipe 13 and the second water inlet control valve 63; with this structure, the outer flow channel part can cause the sewage poured into the sewage pouring pipe 13 by the water collecting structure 101 or the reclaimed water led back to the sewage pouring pipe 13 by the backflow structure 5 to be poured into the outer flow channel part 3 in the inner flow channel part 1 below the second water distribution plate 34 or the outer flow channel part 3 above the second water distribution plate 34 by closing and/or opening the first water inflow control valve 61, the second water inflow control valve 63, the third water inflow control valve 65 and the fourth water inflow control valve 66.
By the cooperation of the water inlet control structure 6, for example, in the case where the sewage does not need to be treated by acidification, precipitation, or the like, or the reclaimed water needs to be treated by methane generation again, the sewage and the reclaimed water can be directly injected into the outer flow path portion 3.
As shown in fig. 1 and 6, the waste water inlet pipe 13 or a pipe body such as the second pipe body 53 communicating with the waste water inlet pipe 13 may be further connected to a cleaning and maintenance structure 102. The cleaning and maintenance structure 102 may provide a fluid, such as clean water, cleaning fluid, etc., for cleaning and maintenance. The sludge discharge port 36 of the outer channel portion 3 can be used to discharge sludge settled at the bottom of the outer channel portion 3. However, there may be a problem that the sludge is accumulated too much at the bottom of the outer flow path part 3 and is difficult to be discharged from the sludge discharge port 36 of the outer flow path part 3, and the sludge can be washed by the clean water provided by the cleaning and maintenance structure 102 so as to be discharged from the sludge discharge port 36 of the outer flow path part 3.
Since the PH of the wastewater affects the efficacy of the treatment means such as methane generation, at least one PH sensor may be disposed on the inner channel portion 1, the middle channel portion 2 and/or the outer channel portion 3 to sense the PH of the wastewater in the inner channel portion 1, the middle channel portion 2 and/or the outer channel portion 3. For example, a PH sensor 38 may be disposed below the second paring disc 34 to sense the PH of the wastewater, such that if the PH of the wastewater is still less than 7, the wastewater is circulated by, for example, an internal circulation means to achieve a PH equal to or greater than 7, thereby effectively performing a methanogenesis reaction on the wastewater passing through the second paring disc 34. For example, if the PH of the wastewater is still less than 7, in addition to the method of treating wastewater by internal circulation, a PH adjusting structure 7 may be further provided in the external flow channel 3 to adjust the PH of the wastewater.
The PH adjusting structure 7 includes: a pH-adjusting liquid reservoir 71 having a first adjusting pipe 72 communicating with the inner flow path part 1 and/or the outer flow path part 3; and a pressurizing pump 73 and a check valve 74 provided on the first adjusting pipe 72 for controlling the pressure and flow rate of the PH adjusting liquid outputted from the PH adjusting liquid storage tank 71. The first adjusting pipe 72 may communicate with the inner flow path portion 1 and/or the outer flow path portion 3 by communicating with a pipe communicating with the inner flow path portion 1 and/or the outer flow path portion 3, such as the sewage injecting pipe 13 and the first inlet control pipe 62, or may directly communicate with the inner flow path portion 1 and/or the outer flow path portion 3 (not shown). In the case where the first adjusting pipe 72 is connected to the first inlet control pipe 62, the PH adjusting structure 7 further includes: a first regulating control valve 75 is provided on the first regulating pipe 72.
Through the cooperation of the pH value adjusting structure 7 and the water inlet control structure 6, the pH value adjusting liquid can be injected into the inner runner part or the outer runner part according to the use condition, so as to adjust the pH value of the sewage. The following is exemplified. For example, in the case where the PH sensor 38 senses that the PH value in the sewage is about 6.5, the PH adjusting liquid may be injected into the outer race part 3 below the second water distribution plate 34, and in the case where the PH sensor 38 senses that the PH value in the sewage is less than 6, the PH adjusting liquid may be injected into the inner race part 1.
The PH adjusting liquid in the PH adjusting liquid storage tank 71 may be liquid caustic soda, thereby adjusting the PH of the sewage. The pressure pump 73 may be a chemical feed pump, and particularly, a corrosion resistant chemical feed pump, for pressurizing the liquid caustic soda.
Fig. 1 is a cross-sectional view of a complex anaerobic bio-fermentation tank 100, wherein the inner channel portion 1, the middle channel portion 2 and the outer channel portion 3 may be tubular bodies, such as cylindrical and square tubular bodies, so that sewage can uniformly react in the first space 11 of the inner channel portion 1, the second space 21 of the middle channel portion 2 and the third space 31 of the outer channel portion 3. In addition, the composite anaerobic fermentation tank may also comprise a tank body and a plurality of shutters arranged in the tank body (not shown in the figure), and the shutters in the tank body may form a first space, a second space and a third space which are identical to the aforementioned inner flow passage part 1, the middle flow passage part 2 and the outer flow passage part 3 and are communicated with each other, so as to achieve the purpose of sewage treatment by treatment means such as acidification, precipitation, methane generation and the like.
The above-mentioned embodiments are provided for illustrative purposes only, and should not be construed as limiting the scope of the present invention, and any modifications made by those skilled in the art without departing from the spirit and principle of the present invention are also included in the scope of the present invention.
Claims (10)
1. A composite anaerobic bio-fermentation tank, comprising:
an inner runner part (1) with a first space (11), the top of the inner runner part (1) is provided with a first communication port (12), and the bottom of the inner runner part (1) is provided with a sewage injection pipe (13);
a middle flow passage part (2) which is provided with a second space (21), the middle flow passage part (2) covers the first communication port (12) of the inner flow passage part (1), and the second space (21) is communicated with the first space (11); the top of the middle flow passage part (2) is provided with a first gas outlet (22), and the bottom of the middle flow passage part (2) is provided with a second communication port (23);
an outer flow passage part (3) which is provided with a third space (31), the outer flow passage part (3) covers the second communication port (23) of the middle flow passage part (2), and the third space (31) is communicated with the second space (21); the top of the outer flow passage part (3) is provided with a second gas outlet (32), and the upper section of the outer flow passage part (3) is provided with a regenerated water outlet (33); and
a fixed bed packing (4) filled in an upper section of the third space (31) of the outer flow path part (3) and disposed below the regenerated water outlet (33) of the outer flow path part (3); the fixed bed packing (4) is porous packing.
2. The combined anaerobic bio-fermentation tank as claimed in claim 1, wherein the bottom of the inner runner portion (1) is provided with a first water distribution tray (14).
3. The combined anaerobic bio-fermentation tank as claimed in claim 1, wherein a tapered portion (24) is provided at the second communication port (23) of the middle flow passage portion (2).
4. The combined anaerobic bio-fermentation tank as claimed in claim 1, wherein the bottom section of the outer runner portion (3) is provided with a second water distribution plate (34).
5. The combined anaerobic bio-fermentation tank as claimed in claim 1, wherein a diversion trench (37) is provided inside the regenerated water outlet (33) of the outer runner section (3).
6. The combined anaerobic bio-fermentation tank as claimed in claim 1, wherein said sewage injection pipe (13) is provided with a sewage control valve (16); a pressure pump (17) and a check valve (18) are provided on the sewage injection pipe (13) between the internal flow path portion (1) and the sewage control valve (16).
7. The combined anaerobic bio-fermentation tank as claimed in claim 6, wherein a backflow structure (5) is provided outside the regenerated water outlet (33) of the outer runner section (3); the reflow structure (5) includes: a first pipe body (51), the first pipe body (51) is communicated with the regenerated water outlet (33) of the outer flow passage part (3); a first control valve (52), the first control valve (52) is arranged on the first pipe body (51); a second pipe (53), one end of the second pipe (53) being communicated with the first pipe (51) between the external flow path part (3) and the first control valve (52), the other end of the second pipe (53) being communicated with the sewage injection pipe (13) between the sewage control valve (16) and the pressurizing pump (17); and a second control valve (54), the second control valve (54) is arranged on the second pipe body (53).
8. The fermentation tank of claim 1, wherein at least one pH sensor (38) is disposed on the inner channel (1), the middle channel (2) and/or the outer channel (3) to sense the pH of the wastewater in the inner channel (1), the middle channel (2) and/or the outer channel (3).
9. The combined anaerobic bio-fermentation tank as claimed in claim 1, wherein the bottom section of the outer runner portion (3) is provided with a second water distribution plate (34); a sewage control valve (16) is arranged on the sewage injection pipe (13); a pressure pump (17) and a check valve (18) are arranged on the sewage injection pipe (13) between the internal runner part (1) and the sewage control valve (16); the sewage injection pipe (13) is provided with a water inlet control structure (6); the water inlet control structure (6) comprises: a first water inlet control valve (61), wherein the first water inlet control valve (61) is arranged on the sewage injection pipe (13) between the inner runner part (1) and the check valve (18); a first water inlet control pipe (62), one end of the first water inlet control pipe (62) is communicated with the sewage injection pipe (13) between the check valve (18) and the first water inlet control valve (61), and the other end of the first water inlet control pipe (62) is communicated with the outer runner part (3) above the second water distribution disc (34); a second water inlet control valve (63), wherein the second water inlet control valve (63) is arranged on the first water inlet control pipe (62); a second water inlet control pipe (64), one end of the second water inlet control pipe (64) is communicated with the first water inlet control pipe (62), and the other end of the second water inlet control pipe (64) is communicated with the outer flow passage part (3) below the second water distribution plate (34); a third water inlet control valve (65), wherein the third water inlet control valve (65) is arranged on the second water inlet control pipe (64); and a fourth water inlet control valve (66), the fourth water inlet control valve (66) being provided on the first water inlet control pipe (62) between the sewage injection pipe (13) and the second water inlet control valve (63).
10. The combined anaerobic bio-fermentation tank as claimed in claim 9, wherein the outer part of the outer runner section (3) is provided with a PH adjusting structure (7); the pH adjusting structure (7) comprises: a PH value adjusting liquid storage tank (71), wherein the PH value adjusting liquid storage tank (71) is provided with a first adjusting pipe (72) communicated with the inner flow passage part (1) and/or the outer flow passage part (3); and a pressurizing pump (73) and a check valve (74), the pressurizing pump (73) and the check valve (74) of the pH value adjusting structure (7) are arranged on the first adjusting pipe (72).
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| CN201810619147.7A CN110606560A (en) | 2018-06-15 | 2018-06-15 | Composite anaerobic biological fermentation tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810619147.7A CN110606560A (en) | 2018-06-15 | 2018-06-15 | Composite anaerobic biological fermentation tank |
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| JP2007209905A (en) * | 2006-02-09 | 2007-08-23 | Kajima Corp | Anaerobic bioreactor |
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| CN107324620A (en) * | 2017-09-06 | 2017-11-07 | 上海海事大学 | A kind of diphasic anaerobic sewage disposal system |
| CN208603821U (en) * | 2018-06-15 | 2019-03-15 | 国统国际股份有限公司 | Composite anaerobic biofermentation slot |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007209905A (en) * | 2006-02-09 | 2007-08-23 | Kajima Corp | Anaerobic bioreactor |
| CN201240936Y (en) * | 2008-05-16 | 2009-05-20 | 永兴县皓天环保科技发展有限责任公司 | Double circulation anaerobic reactor |
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| CN106064851A (en) * | 2016-06-24 | 2016-11-02 | 浙江大学宁波理工学院 | A kind of MLE MBR method efficiently processes marine culture wastewater device and method |
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Application publication date: 20191224 |