CN216377825U - Two-stage anaerobic membrane treatment device - Google Patents
Two-stage anaerobic membrane treatment device Download PDFInfo
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- CN216377825U CN216377825U CN202122409201.5U CN202122409201U CN216377825U CN 216377825 U CN216377825 U CN 216377825U CN 202122409201 U CN202122409201 U CN 202122409201U CN 216377825 U CN216377825 U CN 216377825U
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Abstract
A two-stage anaerobic membrane treatment device relates to the field of biological reaction devices. The system comprises a crusher, a rotary drum screen, a digester, a three-phase centrifuge, a slurry mixing tank, a primary anaerobic tank, a secondary anaerobic membrane reactor, a sewage tank, a biochemical reactor, an ultrafiltration membrane device, a biogas residue tank, a biogas residue centrifuge, a sewage tank, a reverse osmosis membrane and the like. The application has important significance in treating kitchen waste, kitchen waste and livestock and poultry manure by utilizing advanced process devices. Aiming at overcoming the defects of simple process, poor effect, incomplete fermentation and the like in the prior art.
Description
Technical Field
The application relates to the field of biological reaction devices, in particular to a two-stage anaerobic membrane treatment device.
Background
With the rapid development of society, the environmental pollution is more and more serious, and the recycling treatment of organic garbage is more and more emphasized in all communities.
In recent years, the classification of garbage is carried out in cities with developed economy in China, but the treatment process aiming at different garbage is lacked, and even some cities are completely incinerated after classification, which greatly influences the implementation of garbage classification policies. Especially, kitchen garbage classified by garbage has large production amount and high moisture content, and is easy to rot to generate leachate and stink, and the treatment of the garbage determines the implementation effect of a garbage classification policy.
In contrast to rural areas, with the large-scale development of the breeding industry, the yield of the livestock and poultry manure is increased, and the successful resource utilization of the livestock and poultry manure determines the healthy development of the breeding industry and the improvement of rural environment.
As is known, the traditional anaerobic fermentation mode is a fully mixed CSTR, which has the following disadvantages: the hydraulic retention time, the solid retention time and the microorganism retention time cannot be completely separated; for economic efficiency, the hydraulic retention time cannot be too long, and the short solid retention time and the endogenous respiration of the microorganisms result in biomass loss, slow growth of anaerobic microorganisms, and low energy conversion efficiency, and finally, poor fermentation effect.
The anaerobic membrane bioreactor is a new technology which couples the interception effect of a membrane on microorganisms and solids with anaerobic stabilization and completely separates hydraulic retention time and solid retention time. The biomass biological degradation system has the advantages of high biomass retention, small occupied area and low digestive juice yield, and can also bring higher organic matter biodegradation efficiency, less sludge yield, better effluent quality and better biological energy recovery efficiency.
Therefore, the method has important significance for treating kitchen waste, kitchen waste and livestock and poultry manure by using advanced process devices. In order to overcome the defects of simple process, poor effect, incomplete fermentation and the like, the application provides a two-stage anaerobic membrane treatment device and a process.
SUMMERY OF THE UTILITY MODEL
The utility model provides a two-stage anaerobic membrane treatment device and a two-stage anaerobic membrane treatment process, which overcome the defects of simple process, poor effect, incomplete fermentation and the like in the traditional process.
A two-stage anaerobic membrane treatment device is characterized in that a crusher (1) is connected with a rotary drum screen (2) through a screw conveyor or a belt conveyor, the rotary drum screen (2) is connected with a digester (3) through the screw conveyor or the belt conveyor, the digester (3) is connected with a three-phase centrifuge (4) through a screw pump (16) by adopting a pipeline, and a liquid-phase discharge port and a solid-phase discharge port of the three-phase centrifuge (4) are connected with a size mixing tank (5) by adopting pipelines; the slurry mixing tank (5) is connected with a primary anaerobic tank (6) through a feed pump (17) by adopting a pipeline, a methane discharge port of the primary anaerobic tank (6) is connected with a methane tank (7) through a gas flowmeter (31) by adopting a pipeline, and a discharge port at the bottom of the primary anaerobic tank (6) is connected with a secondary anaerobic membrane reactor (8) through a primary anaerobic tank discharge pump (18) by adopting a pipeline; a return port of the second-stage anaerobic membrane reactor (8) is connected with the first-stage anaerobic reaction tank (6) through a first return pump (19) by adopting a pipeline, a biogas residue discharge port at the bottom of the second-stage anaerobic membrane reactor (8) is connected with the biogas residue tank (12) through a biogas residue pump (20) by adopting a pipeline, and a biogas slurry discharge port of the second-stage anaerobic membrane reactor (8) is connected with the first sewage tank (9) through a first sewage pump (21) by adopting a pipeline; the first sewage tank (9) is connected with the biochemical reactor (10) through a second sewage pump (22) by adopting a pipeline, the biochemical reactor (10) is connected with the ultrafiltration membrane device (11) through a first ultrafiltration water inlet pump (23) by adopting a pipeline, a liquid discharge port of the ultrafiltration membrane device (11) is connected with the second sewage tank (14) through a second ultrafiltration water inlet pump (24) by adopting a pipeline, a solid discharge port of the ultrafiltration membrane device (11) is divided into two pipelines, one pipeline is connected with the biochemical reactor (10) through a second reflux pump (25), and the other pipeline is connected with the biogas residue tank (12) through a sludge pump (26); the biogas residue tank (12) is connected with a biogas residue centrifugal machine (13) through a pump (27) by adopting a pipeline, and a sewage discharge port of the biogas residue centrifugal machine (13) is connected with a second sewage tank (14) through a third sewage pump (28); the second sewage tank (14) is connected with the reverse osmosis membrane (15) through a reverse osmosis water inlet pump (29) by adopting a pipeline, and a concentrated solution outlet of the reverse osmosis membrane (15) is connected with the size mixing tank (5) through a concentrated solution discharge pump (30) by adopting a pipeline.
The biogas discharge port of the second-stage anaerobic membrane reactor (8) is connected with a biogas cabinet (7) by a biogas flow meter through a biogas collection pipeline.
The application has important significance in treating kitchen waste, kitchen waste and livestock and poultry manure by utilizing advanced process devices. Aiming at overcoming the defects of simple process, poor effect, incomplete fermentation and the like in the prior art.
Drawings
FIG. 1 is a schematic view of a two-stage anaerobic membrane treatment apparatus;
the device comprises a crusher (1), a rotary drum screen (2), a digester (3), a three-phase centrifuge (4), a slurry mixing tank (5), a primary anaerobic tank (6), a methane tank (7), a secondary anaerobic membrane reactor (8), a first sewage tank (9), a biochemical reactor (10), an ultrafiltration membrane device (11), a methane residue tank (12), a methane residue centrifuge (13), a second sewage tank (14), a reverse osmosis membrane (15), a screw pump (16), a feeding pump (17), a primary anaerobic tank discharging pump (18), a first reflux pump (19), a methane residue pump (20), a first sewage pump (21), a second sewage pump (22), a first ultrafiltration water inlet pump (23), a second ultrafiltration water inlet pump (24), a second reflux pump (25), a sludge pump (26), a pump (27), a third sewage pump (28), a reverse osmosis water inlet pump (29), a concentrated solution discharging pump (30), A gas flow meter (31).
Detailed Description
The following examples are further described below.
Example 1
The novel livestock and poultry manure, kitchen waste and kitchen waste can be used as raw materials. The raw materials are collected and then conveyed to an inlet of a crusher 1, and the raw materials are discharged through a discharge port after being crushed; the discharged materials are sent to a feeding hole of the rotary drum screen 2, and the crusher and the rotary strand screen are connected through a screw conveyor or a belt conveyor.
The material is separated in the drum screen 2, oversize products produced by separation are discharged through an oversize product discharge port, undersize products are discharged through an undersize product discharge port and then conveyed to an inlet of the digester 3, and the undersize product discharge port is connected with the digester 3 through a screw conveyor or a belt.
And (3) steaming the materials in a steaming device 3 at 70-80 ℃, and discharging high-temperature materials generated after steaming through a discharge port of the steaming device 3. The discharge port of the digester 3 is connected with the inlet of the screw pump 16 through a pipeline, and the outlet of the screw pump 16 is connected with the three-phase centrifuge 4. The high temperature material is conveyed to the three-phase centrifuge 4 by a screw pump 16.
After being processed by the three-phase centrifuge 4, three parts of materials of oil, liquid phase and solid phase are generated, wherein the separated oil is collected through an oil discharge port, and the liquid phase and the solid phase generated by separation are respectively discharged through a liquid phase discharge port and a solid phase discharge port. The liquid phase discharge port and the solid phase discharge port are connected with an inlet of a pump 32 through pipelines, and an outlet of the pump 32 is connected with an inlet of the size mixing tank 5.
The liquid phase part and the solid phase part generated by the three-phase separator are mixed in the slurry mixing tank. The outlet of the pulp mixing tank is connected with a feeding pump 17 of the first-stage anaerobic tank 6 through a pipeline, and the outlet of the feeding pump 17 of the first-stage anaerobic tank 6 is connected with the feeding hole of the first-stage anaerobic tank through a pipeline.
From the size mixing tank 5 the pulp is pumped 17 to the primary anaerobic tank 6. In the first-stage anaerobic tank 6, the materials are subjected to medium-temperature or high-temperature anaerobic treatment to generate biogas and fermentation residues. Wherein, the generated marsh gas is collected through a marsh gas discharge port, a gas flowmeter 31 and a marsh gas collecting pipeline, the marsh gas collecting pipeline is connected with an inlet of a marsh gas cabinet 7, and the marsh gas finally enters the marsh gas cabinet 7; the generated primary anaerobic fermentation residues are discharged through a discharge hole of the primary anaerobic tank. The discharge port of the first-stage anaerobic tank is connected with the inlet of a discharge pump 18 of the first-stage anaerobic tank through a pipeline, and the outlet of the discharge pump 18 of the first-stage anaerobic tank is connected with the feed port of the second-stage anaerobic membrane reactor 8 through a pipeline.
The primary anaerobic fermentation residue is pumped by pump 18 to the secondary anaerobic membrane reactor 8. The membrane component in the second-stage anaerobic membrane reactor 8 adopts a microfiltration membrane. In the second anaerobic membrane reactor 8, the materials continue anaerobic reaction to produce biogas and fermentation residues. Wherein, the marsh gas generated by the second-stage anaerobic membrane reactor 8 enters the marsh gas cabinet 7 through a marsh gas discharge port, a marsh gas collecting pipeline and a marsh gas flowmeter 33; meanwhile, the fermentation residue is directly separated into biogas slurry and biogas residue under the action of a microfiltration membrane component 84 in the reactor.
Part of the biogas residues generated by the secondary membrane reactor 8 returns to the primary anaerobic reaction tank 6 again through the return port 83, the return pump 19 and the return pipeline to realize the effect of returning part of the biogas residues; the other part is discharged through a discharge port 82, the rear part of the discharge port 82 is connected with a discharge pipeline, the discharge port 82 is connected with the inlet of the biogas residue pump 20 through a pipeline, the outlet of the biogas residue pump 20 is connected with a pipeline, the rear part of the pipeline is connected with the inlet of the biogas residue tank 12, and the rear part of the outlet of the biogas residue tank is sequentially connected with the pipeline, the pump 27 and the inlet of the biogas residue centrifuge 13. The biogas residue is sent to the biogas residue centrifuge 13 by the pump 27 for centrifugal dehydration treatment. The centrifugal dehydration will produce dehydrated biogas residue and sewage, the produced dehydrated biogas residue is discharged through a biogas residue discharge port, the produced sewage is discharged through a sewage discharge port, the sewage discharge port is connected with a water inlet of the second sewage tank 14 through a pipeline, and the sewage produced by the centrifugal dehydration enters the second sewage tank 14.
Biogas slurry generated by the secondary membrane reactor 8 is connected with the inlet of the sewage pump 21 through a discharge port 86 and a pipeline, and the outlet of the sewage pump 21 is connected with the inlet of the first sewage tank 9; the biogas slurry finally enters the first sewage tank 9.
The outlet of the sewage tank is connected with a pipeline, the pipeline is connected with the inlet of the biochemical reactor 10, and the sewage is subjected to biodegradation treatment in the biochemical reactor 10. The outlet of the biochemical reactor is connected with a pipeline, the rear part of the pipeline is connected with the inlet of an ultrafiltration water inlet pump 23, and the outlet of the ultrafiltration water inlet pump 23 is connected with the water inlet of an external ultrafiltration membrane device. The effluent of the biochemical reactor is discharged from the water discharge port and then pumped to the ultrafiltration membrane apparatus 11, where sludge-water separation is performed. Separation will yield two fractions, liquid and solid.
The liquid part generated by the ultrafiltration membrane device 11 enters the second sewage tank 14 through a liquid discharge port of the ultrafiltration membrane device 11, a pipeline and an ultrafiltration water pump 24; the generated solid part is discharged through a solid discharge port of the ultrafiltration membrane device. The rear part of the solid discharge port is respectively connected with a pipeline 1 and a pipeline 2, the rear part of the pipeline 1 is connected with an inlet of a reflux pump 25, and an outlet of the reflux pump 25 is connected with a sludge reflux port of the biochemical reactor 10; the pipeline 2 is connected with the inlet of a sludge pump 26, the outlet of the sludge pump 26 is sequentially connected with the pipeline and the inlet of the biogas residue tank 12, and the solid matters generated by ultrafiltration are discharged into the biogas residue tank 12.
The second sewage tank 14 is used as a reverse osmosis water inlet tank, a water outlet of the second sewage tank is sequentially connected with a reverse osmosis water inlet pump 29 and a water inlet of a reverse osmosis membrane 15, sewage is treated by a reverse osmosis membrane device to generate two parts, namely concentrated solution and clear water, the clear water is directly discharged through a clear water pipeline sequentially, and the concentrated solution is discharged through a concentrated solution pipeline. The concentrated solution pipeline is connected with a concentrated solution discharge pump 30, and the outlet of the concentrated solution discharge pump is connected with the water inlet of the pulp mixing tank 5.
Claims (3)
1. A two-stage anaerobic membrane treatment device is characterized in that a crusher (1) is connected with a rotary drum screen (2) through a screw conveyor or a belt conveyor, the rotary drum screen (2) is connected with a digester (3) through the screw conveyor or the belt conveyor, the digester (3) is connected with a three-phase centrifuge (4) through a screw pump (16) by adopting a pipeline, and a liquid-phase discharge port and a solid-phase discharge port of the three-phase centrifuge (4) are connected with a size mixing tank (5) by adopting pipelines; the slurry mixing tank (5) is connected with a primary anaerobic tank (6) through a feed pump (17) by adopting a pipeline, a methane discharge port of the primary anaerobic tank (6) is connected with a methane tank (7) through a gas flowmeter (31) by adopting a pipeline, and a discharge port at the bottom of the primary anaerobic tank (6) is connected with a secondary anaerobic membrane reactor (8) through a primary anaerobic tank discharge pump (18) by adopting a pipeline; a return port of the second-stage anaerobic membrane reactor (8) is connected with the first-stage anaerobic tank (6) through a first return pump (19) by adopting a pipeline, a biogas residue discharge port at the bottom of the second-stage anaerobic membrane reactor (8) is connected with the biogas residue tank (12) through a biogas residue pump (20) by adopting a pipeline, and a biogas slurry discharge port of the second-stage anaerobic membrane reactor (8) is connected with the first sewage tank (9) through a first sewage pump (21) by adopting a pipeline; the first sewage tank (9) is connected with the biochemical reactor (10) through a second sewage pump (22) by adopting a pipeline, the biochemical reactor (10) is connected with the ultrafiltration membrane device (11) through a first ultrafiltration water inlet pump (23) by adopting a pipeline, a liquid discharge port of the ultrafiltration membrane device (11) is connected with the second sewage tank (14) through a second ultrafiltration water inlet pump (24) by adopting a pipeline, a solid discharge port of the ultrafiltration membrane device (11) is divided into two pipelines, one pipeline is connected with the biochemical reactor (10) through a second reflux pump (25), and the other pipeline is connected with the biogas residue tank (12) through a sludge pump (26); the biogas residue tank (12) is connected with a biogas residue centrifugal machine (13) through a pump (27) by adopting a pipeline, and a sewage discharge port of the biogas residue centrifugal machine (13) is connected with a second sewage tank (14) through a third sewage pump (28); the second sewage tank (14) is connected with the reverse osmosis membrane (15) through a reverse osmosis water inlet pump (29) by adopting a pipeline, and a concentrated solution outlet of the reverse osmosis membrane (15) is connected with the size mixing tank (5) through a concentrated solution discharge pump (30) by adopting a pipeline.
2. A two-stage anaerobic membrane treatment device according to claim 1, wherein the two-stage anaerobic membrane reactor (8) employs a microfiltration membrane module.
3. A two-stage anaerobic membrane treatment plant according to claim 1, wherein the biogas discharge of the two-stage anaerobic membrane reactor (8) is connected to a biogas tank (7) via a biogas flow meter using a biogas collection pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122409201.5U CN216377825U (en) | 2021-09-30 | 2021-09-30 | Two-stage anaerobic membrane treatment device |
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| CN202122409201.5U CN216377825U (en) | 2021-09-30 | 2021-09-30 | Two-stage anaerobic membrane treatment device |
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