CN111233147A - Method and system for increasing carbon strengthening effect in sewage treatment - Google Patents
Method and system for increasing carbon strengthening effect in sewage treatment Download PDFInfo
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- CN111233147A CN111233147A CN202010048223.0A CN202010048223A CN111233147A CN 111233147 A CN111233147 A CN 111233147A CN 202010048223 A CN202010048223 A CN 202010048223A CN 111233147 A CN111233147 A CN 111233147A
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- 239000010865 sewage Substances 0.000 title claims abstract description 70
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000000694 effects Effects 0.000 title claims abstract description 23
- 230000001965 increasing effect Effects 0.000 title claims abstract description 23
- 238000005728 strengthening Methods 0.000 title description 2
- 239000012530 fluid Substances 0.000 claims abstract description 34
- 239000010802 sludge Substances 0.000 claims abstract description 31
- 230000001580 bacterial effect Effects 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 241000894006 Bacteria Species 0.000 claims description 37
- 238000005119 centrifugation Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 7
- 230000009919 sequestration Effects 0.000 claims description 7
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000002354 daily effect Effects 0.000 abstract description 2
- 230000003203 everyday effect Effects 0.000 abstract description 2
- 108700029181 Bacteria lipase activator Proteins 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 20
- 229910002092 carbon dioxide Inorganic materials 0.000 description 10
- 239000001569 carbon dioxide Substances 0.000 description 10
- 230000003247 decreasing effect Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 241001148470 aerobic bacillus Species 0.000 description 3
- 208000028659 discharge Diseases 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- 241001052560 Thallis Species 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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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
- C02F3/30—Aerobic and anaerobic processes
-
- 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
- C02F2301/043—Treatment of partial or bypass streams
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a method and a system for increasing the effect of fixed carbon in sewage treatment.A hole is formed at the bottom of an anaerobic tower and is connected with a sludge pump, the discharged fluid is divided, one part of the fluid is directly returned to the anaerobic tower, and the other part of the fluid is returned to the anaerobic tower after centrifugally intercepting a bacterial body; an opening at the bottom of the aerobic tank is connected with a sludge pump, the discharged fluid is divided, one part of the discharged fluid is directly returned to the aerobic tank, and the other part of the discharged fluid is centrifugally intercepted to obtain a clear liquid which is returned to the aerobic tank; filtering the water treated in the aerobic tank by an MBR membrane and then entering the next link; the entrapped bacteria act as a bio-organic fertilizer. According to the invention, the carbon source is solidified by intercepting the bacterial bodies, and the sewage plant can treat 1 ten thousand tons of sewage daily to produce about 4t of dry bacterial bodies every day, wherein the total amount of the carbon source is about 2.6t, and compared with the current method, the carbon emission can be reduced by about 70%.
Description
Technical Field
The invention relates to a method and a system for increasing the effect of fixed carbon in sewage treatment, in particular to a sewage treatment method and a system for reducing the emission of carbon dioxide.
Background
At present, carbon source treatment in sewage is to carry out biochemical reaction on carbon source organic matters in sewage after reproduction of anaerobic bacteria, aerobic bacteria and the like so as to thoroughly decompose the organic matters and release carbon dioxide and water. The conventional process of sewage treatment comprises the following steps: sewage raw water → regulating tank → anaerobic treatment → facultative treatment or aerobic treatment → sludge removal → flocculation and sedimentation → filtration → effluent.
Through research on the sewage treatment process, the method has the following discovery: the bacteria concentration in the sewage can keep relative balance after reaching a certain value, namely, old bacteria can die, new bacteria can breed, and the dead bacteria are decomposed by the newly bred bacteria as energy consumption to discharge carbon dioxide.
The carbon content in the sewage with the COD of 1000mg/L is about 375mg/L, and the total carbon source amount per day of a sewage treatment plant for treating 1 million tons of sewage per day is 3.75t according to the current sewage treatment method; producing 1t of absolutely dry sludge, wherein the total amount of carbon sources is about 0.6 t; the fixed carbon source is only 16% and the rest is discharged to the air in the form of carbon dioxide.
As a main component of greenhouse gases, the global emission concentration of carbon dioxide is on the rise in nearly ten years, people are free from the threat of climate warming, and low-carbon emission is actively promoted in all countries.
Disclosure of Invention
The invention provides a method for increasing the carbon sequestration effect in sewage treatment and a system for increasing the carbon sequestration effect in sewage treatment, aiming at solving the problem of overhigh carbon emission in sewage treatment.
In order to solve the technical problem, one embodiment of the present invention adopts the following technical solutions:
a method for increasing the effect of strong carbon in sewage treatment comprises the following steps:
in the process of biologically treating sewage by the anaerobic tower, fluid at the bottom of the anaerobic tower is led out, a part of fluid which is not centrifuged directly flows back to the anaerobic tower for internal circulation through diversion, and the residual fluid returns centrifuged clear liquid into the anaerobic tower after being centrifuged to intercept bacterial bodies;
introducing the sewage treated by the anaerobic tower into an aerobic tank, in the process of biologically treating the sewage in the aerobic tank, guiding out fluid at the bottom of the aerobic tank, directly refluxing a part of fluid which is not centrifuged to the aerobic tank for internal circulation by shunting, centrifuging the residual fluid to intercept bacterial bodies, and returning the centrifuged clear liquid into the aerobic tank;
filtering and intercepting bacterial bodies in the sewage treated in the aerobic tank through an MBR (membrane bioreactor) membrane, and introducing the filtrate into the next link for continuous treatment;
all the bacteria are used as the biological organic fertilizer.
The fluid led out from the bottom of the anaerobic tower and the aerobic pool is mainly sludge formed by dead bacteria, if the fluid is not separated, the part of bacteria can be continuously decomposed by newly propagated bacteria serving as a nutrient source, and the invention can separate excessive bacteria in time by controlling the metabolic balance of the bacteria to achieve the purpose of carbon fixation.
The anaerobic tower and the aerobic tank can be arranged in multiple stages, and the number of the anaerobic tower and the number of the aerobic tank are specifically arranged according to the standard of indexes such as COD, ammonia and nitrogen of the treated sewage in reference to the prior art.
The MBR membrane may be typically located in the last stage aerobic tank. The invention carries out filtration by the MBR membrane, and the molecular weight of the sludge (mainly bacterial bodies) is far greater than the aperture of the membrane, so the sludge cannot pass through the MBR membrane, but water can easily pass through the MBR membrane, and the filtrate filtered by the MBR membrane is guided into the next link for continuous treatment.
According to the method for increasing the effect of the fixed carbon in the sewage treatment, the flow of the fluid led out from the bottom of the anaerobic tower is more than 0.2 time of the capacity/hour of the anaerobic tower.
The method for increasing the effect of strong carbon in sewage treatment is characterized in that when fluid is led out from the bottom of the anaerobic tower and is divided, the ratio of the flow rate of internal circulation to the flow rate of centrifugation is 1-3: 1.
The flow of the fluid led out from the bottom of the aerobic tank is more than 0.2 time of the capacity/hour of the aerobic tank.
The method for increasing the effect of strong carbon in sewage treatment comprises the step of leading out and shunting fluid from the bottom of an aerobic tank, wherein the ratio of the flow rate of internal circulation to the flow rate of centrifugation is 1-2: 1.
The method for increasing the effect of the fixed carbon in the sewage treatment has the separation factor of a centrifugal machine used in the centrifugation of more than or equal to 1000.
According to the method for enhancing the effect of reinforcing carbon in sewage treatment, the aperture of the MBR membrane is less than or equal to 10 nm.
The invention also provides a system for increasing carbon sequestration effect in sewage treatment, which comprises an anaerobic tower and an aerobic tank, wherein the anaerobic tower is communicated with a waterway of the aerobic tank (the anaerobic tower automatically flows into the aerobic tank after treatment), an opening at the bottom of the anaerobic tower is connected with a sludge pump, an outlet of the sludge pump is connected with a three-way valve, one outlet of the three-way valve is provided with an adjusting valve and is directly connected to the upper part of the anaerobic tower through a pipeline, the other outlet of the three-way valve is provided with an adjusting valve and is connected with a centrifuge through a pipeline, and a clear liquid outlet of the centrifuge is connected to the; an opening at the bottom of the aerobic tank is connected with a sludge pump, the outlet of the sludge pump is connected with a three-way valve, one outlet of the three-way valve is provided with an adjusting valve and is directly connected to the upper part of the aerobic tank through a pipeline, the other outlet of the three-way valve is provided with an adjusting valve and is connected with a centrifuge through a pipeline, and a clear liquid outlet of the centrifuge is connected to the upper part of the aerobic tank through a pipeline; an MBR membrane thread group is arranged in the aerobic tank and is connected to a next link treatment system through a pipeline and a sludge pump.
And the system for increasing the carbon fixation effect in the sewage treatment collects the bio-organic fertilizer (slurry dope) through a heavy liquid outlet of the centrifuge.
The sludge pump arranged in the aerobic tank is a submersible sludge pump; the centrifuge may be a butterfly centrifuge, a tube centrifuge, a screw centrifuge, or the like.
One example of a flow rate greater than 0.2 times the aerobic tank capacity/hour is: 200m3The flow rate of the pump of the capacity anaerobic tower is more than 40m3H; another embodiment is: 300m3The flow rate of the pump of the capacity anaerobic tower is more than 60m3H; and so on.
The invention carries out split-flow circulation in the anaerobic and aerobic parts of the sewage treatment: one part is directly circulated, and the other part is separated by a centrifugal machine to obtain the bacteria (mostly dead bacteria deposited at the bottom), so that the sewage treatment effect can be maintained, the dead bacteria can be separated, and the separated bacteria can be used as biological organic fertilizer.
The invention reduces carbon emission, mainly through removing dead bacteria, reduce dead bacteria consumption and decomposition to produce carbon dioxide emission; the fluid at the bottom of the tower or at the bottom of the pool is refluxed in proportion in the anaerobic and aerobic treatment stages, so that the contact between bacteria and sewage is increased, and the activity and the treatment capacity of the bacteria are ensured; the adjusting valve can adjust the reflux interception ratio according to the fluctuation of numerical values such as sewage COD and the like so as to achieve the optimal interception bacterial body numerical value (for example: the secondary discharge standard requires COD100, when the COD of the effluent is 80, the reflux and centrifugation ratio can be 1.5:1, and when the COD is 50, the reflux and centrifugation ratio can be 1.2: 1); the MBR membrane filtration ensures that the bacteria can be completely intercepted.
Compared with the prior art, the invention has at least the following beneficial effects: the method can realize the reduction of carbon source emission, the carbon source is solidified in a bacterial way, and a sewage plant processes 1 ten thousand tons of sewage daily to produce about 4t of dry bacterial every day, wherein the total amount of the carbon source is about 2.6t, and compared with the currently used method, the method can reduce the carbon emission by about 70 percent.
Drawings
FIG. 1 is a schematic view of a system for increasing carbon sequestration in wastewater treatment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
EXAMPLE 1 System architecture
As shown in figure 1, the system for increasing the carbon sequestration effect in sewage treatment comprises an anaerobic tower 1 and an aerobic tank 2, wherein the anaerobic tower 1 is communicated with the aerobic tank 2 through a water channel, one communication mode is that the anaerobic tower is directly communicated through a pipeline, water in the anaerobic tower naturally flows into the aerobic tank, and the other communication mode is that the anaerobic tower is communicated with the aerobic tank through a pipeline and a sludge pump 4 is arranged on the pipeline. An opening at the bottom of the anaerobic tower 1 is connected with a sludge pump 4, the outlet of the sludge pump 4 is connected with a three-way valve 3, one outlet of the three-way valve 3 is provided with an adjusting valve 8 and is directly connected to the upper part of the anaerobic tower through a pipeline, the other outlet of the three-way valve 3 is provided with an adjusting valve 8 and is connected with a centrifuge 6 through a pipeline, and a clear liquid outlet of the centrifuge is connected to the upper part of the anaerobic tower through a; the bio-organic fertilizer is collected through a heavy liquid outlet 9 of the centrifuge. An opening at the bottom of the aerobic tank 2 is connected with a sludge pump 4, the outlet of the sludge pump 4 is connected with a three-way valve 3, one outlet of the three-way valve 3 is provided with an adjusting valve 8 and is directly connected to the upper part of the aerobic tank through a pipeline, the other outlet of the three-way valve 3 is provided with an adjusting valve 8 and is connected with a centrifuge 6 through a pipeline, and a clear liquid outlet of the centrifuge is connected to the upper part of the aerobic tank 2 through; an MBR membrane thread group 7 is arranged in the aerobic tank 2, and the MBR membrane thread group 7 is connected to a treatment system in the next link through a water outlet pipeline 10 and a sludge pump 5.
The regulating valve can regulate the flow of two outlets of the three-way valve, so that the proportion of internal circulation and centrifugal fluid is controlled, the internal circulation is controlled at a proper proportion, the thalli can flow back to the upper part of the anaerobic tower or the aerobic tank and are fully mixed with sewage, and the higher sewage treatment efficiency is kept; the bacteria die after living for a period of time and are deposited at the bottom of the anaerobic tower or the aerobic tank, fluid at the bottom of the anaerobic tower or the aerobic tank is pumped by a sludge pump, and then the fluid is centrifuged, so that more bacteria can be separated from the anaerobic tower or the aerobic tank, more dead bacteria are separated, and the dead bacteria are not decomposed in the sewage treatment process, so that the release amount of carbon dioxide is reduced, and the carbon source is fixed.
According to the invention, through research, the flow of the sewage or sludge led out from the bottom of the anaerobic tower is more than 0.2 time of the capacity/hour of the anaerobic tower, when the sewage or sludge is led out from the bottom of the anaerobic tower and is divided, the ratio of the flow of the internal circulation to the flow of the centrifugation is 1-3:1, and the conditions are met, so that the inside of the anaerobic tower can keep higher sewage treatment efficiency, and more bacteria can be separated. The variation of the flow rate out of the range is likely to cause a problem that the sewage treatment efficiency is remarkably decreased, the bacteria separation amount is remarkably decreased, or both the sewage treatment efficiency and the bacteria separation amount are decreased. In the sewage treatment process, the carbon source should be fixed and the release amount of carbon dioxide should be reduced on the basis of maintaining high sewage treatment efficiency.
Similarly, the flow rate of the fluid led out from the bottom of the aerobic tank is more than 0.2 time of the capacity/hour of the aerobic tank, when the fluid is led out from the bottom of the aerobic tank and is divided, the ratio of the flow rate of the internal circulation to the flow rate of the centrifugal pump is 1-2:1, and the conditions are met, so that the high sewage treatment efficiency can be kept in the aerobic tank, and more bacteria can be separated. The variation of the flow rate out of the range is likely to cause a problem that the sewage treatment efficiency is remarkably decreased, the bacteria separation amount is remarkably decreased, or both the sewage treatment efficiency and the bacteria separation amount are decreased.
During centrifugation, the separation factor of the used centrifuge is more than or equal to 1000, for example, the centrifuge with the separation factor of 1000, 1200 and the like can be used, so that more bacteria can be trapped, and the requirement on equipment is relatively low. Too low separation factor results in too low bacterial interception and a significant increase in carbon source solidification rate.
The water obtained by filtering the MBR membrane thread group is intercepted with all the bacterial bodies, so that the discharged water is cleaner, and the bacterial bodies are intercepted in the aerobic tank, so that more bacterial bodies can be separated out in the centrifugal process to be used as bio-organic fertilizer, and the carbon source solidification rate is improved.
Example 2 Sewage treatment
The sewage enters a biological reaction tank after being pretreated, a sludge pump is arranged at the bottom end of the anaerobic tower, and the pump flow is 0.25 volume/hour (namely 200 m)3The flow rate of the pump of the capacity anaerobic tower is 50m3H), controlling the flow rate of the reflux internal circulation through a regulating valve: the ratio of the centrifugal intercepted bacterial body flow rate is 1: 1. The end of the pipeline for retaining the bacterial body is connected with a centrifugal machine with a separation factor of 1200, the centrifugal clear liquid returns to the anaerobic tower, and the bacterial body obtained by centrifugation is treated as the biological organic fertilizer.
And the sewage treated by the anaerobic tower flows into the aerobic tank for retreatment.
A sludge pump is added in the aerobic tank, the pump flow is 0.25 volume/hour, and the reflux circulation flow is controlled by a regulating valve: the flow rate of the bacteria body intercepted by centrifugation is 1: 1. The end of the pipeline for retaining the bacterial body is connected with a centrifugal machine with a separation factor of 1200, the centrifugal clear liquid returns to the aerobic tank, and the bacterial body obtained by centrifugation is treated as the biological organic fertilizer.
After the aerobic tank is treated, filtering and intercepting the water after the bacteria are intercepted by an MBR membrane with the aperture of 10nm, and then carrying out the next treatment link.
Through calculation, the biological reaction tank for treating 1 ten thousand tons of sewage per day can produce about 4t of dry bacterial bodies per day, wherein the total amount of carbon sources is about 2.6t, and compared with the current method, the carbon emission can be reduced by about 70%.
The process flow of the current method is sewage raw water → a regulating tank → anaerobic treatment → facultative treatment or aerobic treatment → sludge removal → flocculation precipitation → filtration → effluent, in the process, the anaerobic and facultative treatment is not controlled, bacteria in the aerobic treatment link can be directly discharged into the aerobic tank for treatment, anaerobic bacteria can die quickly due to the existence of a large amount of oxygen, the dead bacteria can be decomposed by the aerobic bacteria to discharge carbon dioxide, and the aerobic bacteria can die gradually after being proliferated to be thoroughly decomposed into substances such as carbon dioxide and water. The sewage treated by the aerobic tank can remove dead bacteria and suspended substances (collectively called sludge) by gravity sedimentation. The total carbon source amount per day for treating 1 million tons of sewage by a sewage plant adopting the process is 3.75 t; producing 1t of absolutely dry sludge, wherein the total amount of carbon sources is about 0.6 t; the carbon source fixed was only 16%.
Although the invention has been described herein with reference to illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure herein. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (9)
1. A method for increasing the effect of strong carbon in sewage treatment is characterized by comprising the following steps:
in the process of biologically treating sewage by the anaerobic tower, fluid at the bottom of the anaerobic tower is led out, a part of fluid which is not centrifuged directly flows back to the anaerobic tower for internal circulation through diversion, and the residual fluid returns centrifuged clear liquid into the anaerobic tower after being centrifuged to intercept bacterial bodies;
introducing the sewage treated by the anaerobic tower into an aerobic tank, in the process of biologically treating the sewage in the aerobic tank, guiding out fluid at the bottom of the aerobic tank, directly refluxing a part of fluid which is not centrifuged to the aerobic tank for internal circulation by shunting, centrifuging the residual fluid to intercept bacterial bodies, and returning the centrifuged clear liquid into the aerobic tank;
filtering and intercepting bacterial bodies in the sewage treated in the aerobic tank through an MBR (membrane bioreactor) membrane, and introducing the filtrate into the next link for continuous treatment;
all the bacteria are used as the biological organic fertilizer.
2. The method of claim 1, wherein the flow rate of the fluid discharged from the bottom of the anaerobic tower is greater than 0.2 times the capacity of the anaerobic tower per hour.
3. The method of increasing the effect of fixed carbon in sewage treatment according to claim 2, wherein the ratio of the flow rate of the internal circulation to the flow rate of the centrifugal circulation is 1-3:1 when the fluid is guided out from the bottom of the anaerobic tower and divided.
4. The method of claim 1, wherein the flow rate of the fluid from the bottom of the aerobic tank is greater than 0.2 times the capacity of the aerobic tank per hour.
5. The method for increasing the effect of fixed carbon in sewage treatment according to claim 4, wherein when the fluid is led out from the bottom of the aerobic tank and is divided, the ratio of the flow rate of the internal circulation to the flow rate of the centrifugal is 1-2: 1.
6. The method for increasing the effect of fixed carbon in sewage treatment according to claim 1, wherein the separation factor of a centrifuge used in the centrifugation is 1000 or more.
7. The method of increasing the effect of strong carbon in wastewater treatment according to claim 1, wherein the MBR membrane has a pore size of 10nm or less.
8. A system for increasing carbon sequestration effect in sewage treatment comprises an anaerobic tower and an aerobic tank, wherein a waterway of the anaerobic tower is communicated with a waterway of the aerobic tank; an opening at the bottom of the aerobic tank is connected with a sludge pump, the outlet of the sludge pump is connected with a three-way valve, one outlet of the three-way valve is provided with an adjusting valve and is directly connected to the upper part of the aerobic tank through a pipeline, the other outlet of the three-way valve is provided with an adjusting valve and is connected with a centrifuge through a pipeline, and a clear liquid outlet of the centrifuge is connected to the upper part of the aerobic tank through a pipeline; an MBR membrane thread group is arranged in the aerobic tank and is connected to a next link treatment system through a pipeline and a sludge pump.
9. The system for increasing carbon sequestration in wastewater treatment according to claim 8, characterized in that the bio-organic fertilizer is collected through the heavy liquid outlet of the centrifuge.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5514277A (en) * | 1993-04-12 | 1996-05-07 | Khudenko; Boris M. | Treatment of wastewater and sludges |
| CN1785844A (en) * | 2005-12-15 | 2006-06-14 | 南京大学 | Biological anaerobic reactor of textile printing dyeing waste water |
| CN106242050A (en) * | 2016-07-27 | 2016-12-21 | 广州鹏凯环境科技股份有限公司 | Circular integration sewage disposal device in a kind of vertical low energy consumption |
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2020
- 2020-01-16 CN CN202010048223.0A patent/CN111233147A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5514277A (en) * | 1993-04-12 | 1996-05-07 | Khudenko; Boris M. | Treatment of wastewater and sludges |
| CN1785844A (en) * | 2005-12-15 | 2006-06-14 | 南京大学 | Biological anaerobic reactor of textile printing dyeing waste water |
| CN106242050A (en) * | 2016-07-27 | 2016-12-21 | 广州鹏凯环境科技股份有限公司 | Circular integration sewage disposal device in a kind of vertical low energy consumption |
| CN207016557U (en) * | 2016-12-26 | 2018-02-16 | 江苏三益科技有限公司 | A kind of high concentration methacrylic acid wastewater processing system up to standard |
| CN109264859A (en) * | 2017-07-17 | 2019-01-25 | 广东新会中集特种运输设备有限公司 | A2O2Sewage disposal system and its processing method |
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| Title |
|---|
| 丁忠浩 编著: "《废水资源化综合利用技术》", 31 January 2007 * |
| 郝晓地 主编: "《可持续污水/废物处理技术》", 30 June 2006 * |
| 陈群玉 等主编: "《水污染控制工程》", 30 June 2018 * |
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