CN110372097B - Method for treating wastewater by using energy-saving tower type internal circulation reactor - Google Patents
Method for treating wastewater by using energy-saving tower type internal circulation reactor Download PDFInfo
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- CN110372097B CN110372097B CN201910738714.5A CN201910738714A CN110372097B CN 110372097 B CN110372097 B CN 110372097B CN 201910738714 A CN201910738714 A CN 201910738714A CN 110372097 B CN110372097 B CN 110372097B
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- 238000000034 method Methods 0.000 title claims description 26
- 239000002351 wastewater Substances 0.000 title claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 238000006243 chemical reaction Methods 0.000 claims abstract description 64
- 239000012528 membrane Substances 0.000 claims abstract description 62
- 238000005276 aerator Methods 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000010802 sludge Substances 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 238000005273 aeration Methods 0.000 claims description 11
- 239000012510 hollow fiber Substances 0.000 claims description 11
- 238000001471 micro-filtration Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 238000006213 oxygenation reaction Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000029087 digestion Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F3/302—Nitrification and denitrification treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses an energy-saving tower type internal circulation reactor which comprises an internal tower, an external tower, a water inlet water distribution pipe and a water production pipe, wherein the internal tower is arranged in the external tower, an internal overflow weir is arranged at the top end of the side wall of the internal tower, a cofferdam ring is fixedly connected to the outer part of the internal overflow weir, the side wall of the cofferdam ring, which is far away from the internal tower, is an external overflow weir, the height of the external overflow weir is lower than that of the internal overflow weir, an MBR (Membrane biological reactor) unit is arranged at the upper end of the internal tower, a channel is arranged at the lower end of the internal tower, an aerator is arranged in the channel and is positioned under the MBR unit, an aerobic biological membrane reaction zone, an anoxic anaerobic biological membrane reaction zone and a mud pool zone are arranged between the external tower and the internal tower, and the anoxic biological membrane reaction zone is filled with aerobic biological filler. The invention can obviously reduce the operation energy consumption and save the construction land on the premise of ensuring that the water quality of produced water reaches the standard and is stable.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an energy-saving tower type internal circulation reactor.
Background
With the development of social economy, the living standard of people is improved, the wastewater-free discharge amount of each type is increased, and the country also puts higher demands on sewage (wastewater) treatment. At present, the membrane-bioreactor is widely applied to the treatment of low-concentration organic wastewater in medium and small scale in urban (rural) town due to the advantages of flexible installation, stable treatment effect and the like, and the effluent can reach the first grade A standard specified in GB 18918-2002.
However, in addition to maintaining the oxygenation aeration required for biological treatment, the conventional membrane bioreactor also requires continuous air flushing of the membrane, which is increased by about 50% compared with conventional biological treatment, resulting in great waste of dissolved oxygen in the membrane tank and wasteful consumption of electric energy; meanwhile, the process flow of the reactor system is shorter, the denitrification and dephosphorization effects are poor, and the effluent is easy to reach the standard; and the tank-type integrated MBR Membrane Bioreactor (MBR) occupies a relatively large volume, and is not applicable to villages and towns with limited land.
Disclosure of Invention
The invention aims to provide an energy-saving tower type internal circulation reactor which can obviously reduce the operation energy consumption and save the construction land on the premise of ensuring that the water quality of produced water reaches the standard and is stable so as to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides an energy-saving tower type internal circulation reactor, which comprises an internal tower, an external tower, a water inlet water distribution pipe and a water production pipe, wherein the internal tower is arranged in the external tower, an internal overflow weir is arranged at the top end of the side wall of the internal tower, the top end of the internal overflow weir can enable the upper end of the internal tower to be communicated with the upper end of the external tower, a cofferdam ring is fixedly connected to the outside of the internal overflow weir, the water inlet water distribution pipe can supply wastewater into the cofferdam ring, the side wall of the cofferdam ring, which is far away from the internal tower, is provided with an external overflow weir, the height of the external overflow weir is lower than the height of the internal overflow weir, the upper end of the internal tower is provided with an MBR membrane reaction unit, the upper end of the MBR membrane reaction unit is communicated with the water production pipe, the lower end of the internal tower is provided with a channel, the lower end of the external tower is communicated with the lower end of the internal tower, an aerator is fixedly connected to the inner tower, the inner tower is provided with an oxygen-poor membrane reaction zone, an oxygen-poor biological membrane is sequentially filled with an oxygen-poor biological membrane zone, an oxygen-poor biological membrane zone is filled with an oxygen-poor biological membrane zone, and an anoxic zone is filled with an anoxic biological membrane zone, and an anoxic zone.
Preferably, the sludge pond area is provided with a sludge discharge port, the sludge discharge port is communicated with a sludge discharge pipe, the sludge discharge pipe is provided with a sludge discharge valve, and the sludge discharge pipe is communicated with a sludge pump.
Preferably, a water distributor is arranged above the aerator, and the water distributor is positioned right below the MBR membrane reaction unit.
Preferably, a hollow fiber micro-filtration membrane is arranged in the MBR membrane reaction unit, and the hollow fiber micro-filtration membrane is made of PTFE or PVDF.
Preferably, the pore diameter of the hollow fiber microfiltration membrane is 0.1-0.2 mu m, and the membrane flux of the hollow fiber microfiltration membrane is 0.5-0.8 m 3/(m2 & d.
Preferably, the water level of the water outlet end of the water producing pipe is lower than the water level of the water inlet end of the water producing pipe.
Preferably, the water producing pipe is communicated with a self-priming pump.
Preferably, the water inlet and distribution pipe is communicated with the water outlet end of the water inlet lifting pump, and the water inlet end of the water inlet lifting pump is communicated with a wastewater tank.
Preferably, the surface of the aerobic biological filler is coated with a double-layer aerobic biological film, and the surface of the anaerobic biological filler is coated with a double-layer anaerobic biological film.
Preferably, the aerobic biological filler and the anaerobic biological filler are hydrophilic combined fillers.
Compared with the prior art, the invention has the following technical effects:
Firstly, under the action of an aerator, mixed liquor and activated sludge enter an MBR (membrane bioreactor) membrane reaction unit for solid-liquid separation, separated clean water is discharged from a water production pipe, separated mixed liquor and activated sludge fall under the action of gravity, residual sludge is discharged from the bottom of the MBR membrane reaction unit, then the mixed liquor and activated sludge rise along the wall of an inner tower under the action of aeration (oxygen enrichment) and overflow to a cofferdam ring from the top of the inner tower, are mixed with wastewater in the cofferdam ring and overflow to an outer tower from top to bottom, so that double-tower internal circulation is realized, and simultaneously, oxygen enriched after repeated aeration is used for aerobic reaction of an aerobic biological membrane reaction zone to fully utilize residual dissolved oxygen of the MBR membrane reaction unit, so that waste of dissolved oxygen of the MBR membrane reaction unit is avoided, and energy consumption can be saved; in addition, energy-saving tower internal circulation reactor includes outer tower and interior tower double tower structure, and circulation liquid after good oxygen, oxygen deficiency, anaerobic reaction just can promote to interior tower through outer tower lower extreme and under the effect of aerator to realize the internal circulation between interior tower and the outer tower, can reduce reactor area, also can avoid the use of backwash pump, further saved running cost, and guarantee that the quality of produced water reaches standard and is stable in the cyclic treatment process that repeats.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of an energy-saving tower type internal circulation reactor of the present invention;
FIG. 2 is a top view of an energy-efficient tower internal circulation reactor according to the present invention;
wherein: the device comprises a 1-outer tower, a 2-inner tower, a 3-overflow weir, a 4-cofferdam ring, a 5-inner overflow weir, a 6-MBR membrane reaction unit, a 7-water inlet water distribution pipe, an 8-aerobic biological membrane reaction zone, a 9-anoxic anaerobic biological membrane reaction zone, a 10-mud pool zone, a 11-aerator, a 12-water distributor, a 13-water production pipe, a 14-mud discharge pipe, a 15-water inlet lifting pump, a 16-sludge pump and a 17-self-priming pump.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the invention without any inventive effort, are intended to fall within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-2: the embodiment provides an energy-saving tower type internal circulation reactor, including interior tower 2, outer tower 1, water inlet water distribution pipe 7 and produce water pipe 13, interior tower 2 sets up the inside at outer tower 1, the top of interior tower 2 lateral wall is equipped with interior overflow weir 5, interior overflow weir 5 top can make the upper end of interior tower 2 and the upper end intercommunication of outer tower 1, the outside fixedly connected with cofferdam circle 4 of interior overflow weir 5, water inlet water distribution pipe 7 communicates with the play water end of intake elevator pump 15, the water inlet end intercommunication of intake elevator pump 15 has the waste water pond, water inlet water distribution pipe 7 can supply with waste water in to cofferdam circle 4, the lateral wall that cofferdam circle 4 kept away from interior tower 2 is outer overflow weir 3, the height of outer overflow weir 3 is less than the height of interior overflow weir 5, make the circulating fluid in interior tower 2 mix with the waste water that newly advances in cofferdam circle 4, can overflow 3 to outer tower 1 from cofferdam circle 4 after mixing, form the intercommunication at inner tower 2 and outer tower 1 top.
An aerobic biological film reaction zone 8, an anoxic anaerobic biological film reaction zone 9 and a mud pool zone 10 are sequentially arranged between the outer tower 1 and the inner tower 2 from top to bottom, the mud pool zone 10 is positioned below a channel, an aerobic biological filler is filled in the aerobic biological film reaction zone 8, the surface of the aerobic biological filler is wrapped with an aerobic biological film, the surface of the aerobic biological filler is wrapped with a double-layer aerobic biological film, and then circulating liquid overflows to the aerobic biological film reaction zone 8 and carries out aerobic reaction, pollutants are biochemically degraded, the aerobic biological film reaction zone 8 has nitrification and phosphorus absorption reactions, larger granular sludge formed in the aerobic biological film reaction zone 8 quickly sinks to the mud pool zone 10, oxygen sources in excessive aeration can be fully utilized as oxygen sources in the aerobic reaction, and the waste of dissolved oxygen in excessive aeration is avoided. The anaerobic biofilm reaction zone 9 is filled with anaerobic biofilm, the surface of the anaerobic biofilm is coated with double-layer anaerobic biofilm, the aerobic biofilm and the anaerobic biofilm are hydrophilic combined filler, the hydrophilic combined filler can be porous spherical combined suspended filler, suspended modified fiber combined filler and the like, the hydrophilic combined filler can be polyolefin or polyamide biofilm, after passing through the aerobic biofilm reaction zone 8, circulating liquid continuously flows downwards to enter the anaerobic biofilm reaction zone 9, and the anaerobic biofilm reaction zone 9 performs anaerobic digestion reaction and denitrification to a certain extent. The upper end inside the inner tower 2 is provided with an MBR membrane reaction unit 6, the upper end of the MBR membrane reaction unit 6 is communicated with a water production pipe 13, the lower end inside the inner tower 2 is provided with a channel, the lower end of the outer tower 1 is communicated with the lower end of the inner tower 2 by the channel, an aerator 11 is arranged in the channel, the aerator 11 is positioned right below the MBR membrane reaction unit 6, a water distributor 12 is arranged above the aerator 11, the water distributor 12 is positioned right below the MBR membrane reaction unit 6, and under the action of the aerator 11, circulating liquid and gas supplied by aeration rise, and water and gas flow uniformly rise into the MBR membrane reaction unit 6 under the action of the water distributor 12. The circulating liquid after aerobic, anoxic and anaerobic reactions is deposited in a sludge pool area 10, the circulating liquid is aerated and carried by an aerator 11 to rise to form rising water flow, part of active sludge on the upper layer of the sludge pool area 10 at the bottom is rolled up to be mixed, the mixed liquid is uniformly lifted into an MBR membrane reaction unit 6 under the action of a water distributor 12, after solid-liquid separation, clear water above a membrane is discharged through a water production pipe 13, the residual mixed liquid enters a cofferdam ring 4 from the upper end of the MBR membrane reaction unit 6, overflows to an aerobic biological membrane reaction area 8 after being mixed with inflow water, flows through the aerobic biological membrane reaction area 8 and the anoxic biological membrane reaction area 9, and internal circulation is realized under the action of the aerator 11.
Preferably, the sludge pond area 10 is provided with a sludge discharge port, the sludge discharge port is communicated with a sludge discharge pipe 14, the sludge discharge pipe 14 is provided with a sludge discharge valve, the sludge discharge pipe 14 is communicated with a sludge pump 16, and then the residual sludge in the sludge pond area 10 can be discharged periodically.
Preferably, the MBR membrane reaction unit 6 is provided with a hollow fiber microfiltration membrane, and the hollow fiber microfiltration membrane is made of PTFE (polytetrafluoroethylene) or PVDF (polyvinylidene fluoride). Preferably, the pore diameter of the hollow fiber microfiltration membrane is 0.1-0.2 μm, and the membrane flux of the hollow fiber microfiltration membrane is 0.5-0.8 m 3/(m2. Day).
Preferably, the water level of the water outlet end of the water producing pipe 13 is lower than the water level of the water inlet end of the water producing pipe 13, so that the clear water after solid-liquid separation is discharged by utilizing the negative pressure generated by the higher liquid level difference, and the running cost is saved. The water producing pipe 13 can be communicated with the self-priming pump 17 to suck clear water after solid-liquid separation.
Before entering the reactor, the wastewater can be filtered through a coarse/fine grid, then is lifted to a water inlet water distribution pipe 7 by a water inlet lifting pump 15, the water inlet is uniformly distributed in a cofferdam ring 4 and is mixed with circulating liquid overflowed outwards from an inner tower 2 for oxygenation, and after mixing, the mixture overflows from an overflow weir 3 to enter an aerobic biomembrane reaction zone 8 for aerobic reaction; after the aerobic reaction, the sludge sequentially undergoes anoxic and anaerobic reactions, then is carried and rolled up along with the air flow from the lower end of the outer tower 1 under the action of the aerator 11, and simultaneously the sludge on the upper layer of the sludge pool area 10 rises along with the air flow in a rolling way so as to ensure the proper sludge concentration in the reactor; the final circulating liquid is treated by an MBR membrane reaction unit 6, filtered and discharged to obtain clear water, and the produced water can be ensured to meet the requirement of a discharge standard; in addition, under the aeration action of the aerator 11, the inner tower 2 is subjected to the action of aeration ascending airflow rolling, the circulating liquid in the inner tower 2 is continuously bulged out of the inner overflow weir 5, enters the cofferdam ring 4 and is mixed with the inlet water to form circulating oxygen-enriched water, and the dissolved oxygen in the oxygen-enriched circulating water is taken as an oxygen source to enter the aerobic biochemical membrane reaction zone, so that an inner circulation process is completed.
The beneficial effects of this embodiment are: (1) The waste water newly fed by the water inlet water distribution pipe 7 is fully mixed with the circulating liquid through the double overflow action of the inner overflow weir 5 and the outer overflow weir 3, so that the surplus dissolved oxygen of the MBR membrane reaction unit 6 is fully utilized to oxygenate the aerobic biological reaction zone, the waste of the dissolved oxygen of the MBR membrane reaction unit 6 is avoided, and the running cost of the reactor can be further reduced; (2) The double-tower structure of the inner tower 2 and the outer tower 1 enables the inner tower 2 to be compatible with a sludge selector, activates aerobic sludge, enables the aerobic sludge to be in a full starvation state before entering an aerobic reaction zone, and improves the aerobic digestion rate of pollutants; (3) The whole reactor does not need to be refluxed by a reflux pump, the internal circulation power of circulating liquid is provided by utilizing the rapid rising disturbance effect of aeration gas and liquid, and internal circulation is formed between the internal tower 2 and the external tower 1, so that the occupied area of the reactor is reduced, and the energy consumption and the running cost of the reactor are reduced; (4) Through continuous internal circulation of aerobic-anoxic-anaerobic reaction, the high-efficiency denitrification and dephosphorization function in the reactor is realized, so as to ensure that the quality of produced water reaches the standard.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. A method for treating wastewater by an energy-saving tower type internal circulation reactor is characterized by comprising the following steps: the anaerobic sludge aerobic biological membrane anaerobic reactor comprises an inner tower, an outer tower, a water inlet water distribution pipe and a water production pipe, wherein the inner tower is arranged in the outer tower, an inner overflow weir is arranged at the top end of the side wall of the inner tower, the top end of the inner overflow weir enables the upper end of the inner tower to be communicated with the upper end of the outer tower, a cofferdam ring is fixedly connected to the outer part of the inner overflow weir, the water inlet water distribution pipe supplies wastewater into the cofferdam ring, the cofferdam ring is far away from the side wall of the inner tower and is an outer overflow weir, the height of the outer overflow weir is lower than that of the inner overflow weir, an MBR membrane reaction unit is arranged at the upper end of the inner tower and is communicated with the water production pipe, a channel is arranged at the lower end of the inner tower, the lower end of the outer tower is communicated with the lower end of the inner tower, an aerator is arranged in the channel, the aerator is positioned right below the MBR membrane reaction unit, an anoxic reaction zone and an anoxic zone are sequentially arranged between the outer tower and the inner tower, an anoxic zone and an anoxic zone, an anoxic zone is arranged on the anoxic zone, an anoxic zone is filled with an anoxic zone, and an anoxic zone is arranged on the anoxic zone, and an aerobic zone is filled with an anoxic zone, and an aerobic zone is filled with the anoxic zone and an aerobic zone;
The wastewater is lifted to the water inlet and distribution pipe by a water inlet lifting pump, the water inlet is uniformly distributed in the cofferdam ring and is mixed with circulating liquid overflowed outwards by the inner tower for oxygenation, and the mixed wastewater overflows from the overflow weir to enter the aerobic biomembrane reaction zone for aerobic reaction; sequentially carrying out anoxic and anaerobic reactions after the aerobic reaction, carrying the sludge on the upper layer of the sludge pond area along with the airflow from the lower end of the outer tower under the action of the aerator, and rising the sludge on the upper layer of the sludge pond area along with the airflow so as to ensure proper sludge concentration in the reactor; the final circulating liquid is treated and filtered by the MBR unit to discharge clear water, and the produced water can be ensured to meet the requirement of discharge standard; in addition, under the aeration effect of the aerator, the inner tower is subjected to the rolling effect of aeration ascending airflow, the circulating liquid in the inner tower is continuously bulged out of the inner overflow weir, enters the cofferdam ring and is mixed with the inlet water to form circulating oxygen-enriched water, and the dissolved oxygen in the oxygen-enriched circulating water is taken as an oxygen source to enter the aerobic biomembrane reaction zone, so that an inner circulation process is completed.
2. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: the mud pond area has been seted up the mud mouth, the mud mouth intercommunication has the mud pipe, be equipped with the mud valve on the mud pipe, the mud pipe intercommunication has the sludge pump.
3. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: a water distributor is arranged above the aerator and is positioned right below the MBR membrane reaction unit.
4. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: the MBR membrane reaction unit is internally provided with a hollow fiber micro-filtration membrane which is made of PTFE or PVDF.
5. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 4, wherein the method comprises the following steps: the aperture of the hollow fiber microfiltration membrane is 0.1-0.2 mu m, and the membrane flux of the hollow fiber microfiltration membrane is 0.5-0.8 m 3/(m2 ･ d).
6. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: the water level of the water outlet end of the water producing pipe is lower than the water level of the water inlet end of the water producing pipe.
7. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: and the water production pipe is communicated with a self-priming pump.
8. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: the water inlet and distribution pipe is communicated with the water outlet end of the water inlet lifting pump, and the water inlet end of the water inlet lifting pump is communicated with a wastewater tank.
9. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: the surface of the aerobic biological filler is coated with a double-layer aerobic biological film, and the surface of the anaerobic biological filler is coated with a double-layer anaerobic biological film.
10. The method for treating wastewater by using the energy-saving tower type internal circulation reactor according to claim 1, wherein the method comprises the following steps: the aerobic biological filler and the anaerobic biological filler are hydrophilic combined fillers.
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| CN110845009B (en) * | 2019-11-09 | 2023-08-01 | 上海电站辅机厂有限公司 | Anoxic and aerobic biochemical integrated device |
| CN111302498B (en) * | 2020-04-15 | 2024-07-02 | 桂林理工大学 | Constructed wetland sewage purification system |
| CN117717883B (en) * | 2024-02-06 | 2024-05-14 | 西原环保(上海)股份有限公司 | Gas deodorizing device and method |
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| CN107381816A (en) * | 2017-09-18 | 2017-11-24 | 广东益康生环保服务有限公司 | A kind of multistage OA MBR oxidation ditches |
| CN207973565U (en) * | 2018-02-01 | 2018-10-16 | 浙江省环境工程有限公司 | Soft sheet type MBR film advanced waste treatment systems |
| CN210438489U (en) * | 2019-08-12 | 2020-05-01 | 桂润环境科技股份有限公司 | Energy-saving tower type internal circulation reactor |
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