CN210438489U - Energy-saving tower type internal circulation reactor - Google Patents
Energy-saving tower type internal circulation reactor Download PDFInfo
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- CN210438489U CN210438489U CN201921296008.1U CN201921296008U CN210438489U CN 210438489 U CN210438489 U CN 210438489U CN 201921296008 U CN201921296008 U CN 201921296008U CN 210438489 U CN210438489 U CN 210438489U
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Abstract
The utility model discloses an energy-saving tower type internal circulation reactor, including the inner tower, outer tower, the water inlet distributor and produce the water pipe, the inner tower sets up the inside at outer tower, the top of inner tower lateral wall is equipped with interior overflow weir, the outside fixedly connected with cofferdam circle of interior overflow weir, the lateral wall that the inner tower was kept away from to the cofferdam circle is outer overflow weir, the height that highly is less than interior overflow weir of outer overflow weir, the upper end of the inside of inner tower is provided with MBR membrane reaction unit, the passageway has been seted up to the inside lower extreme of inner tower, be equipped with the aerator in the passageway, the aerator is located MBR membrane reaction unit under, be equipped with aerobic biomembrane reaction zone between outer tower and the inner tower, oxygen deficiency anaerobism biomembrane reaction zone and mud pond district, the aerobic biomembrane reaction zone intussuseption is filled with aerobic biological filler, oxygen deficiency anaerobism biomembrane reaction zone fills up and is equipped with oxygen deficiency. The utility model can obviously reduce the operation energy consumption and save the construction land on the premise of ensuring the quality of the produced water to reach the standard and be stable.
Description
Technical Field
The utility model 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 emission of various types of wastewater is increased, and the state also puts higher requirements on the treatment of sewage (wastewater). At present, the membrane-bioreactor is widely applied to the treatment of low-concentration organic wastewater in small and medium cities and towns due to the advantages of flexible arrangement and installation, stable treatment effect and the like, and the effluent can reach the first-grade A standard specified in GB 18918-2002.
However, the conventional membrane bioreactor needs to maintain the oxygenation aeration amount required by the biological treatment, and also needs to continuously wash the membrane with air, the total aeration amount is increased by about 50 percent compared with the conventional biological treatment, the great waste of dissolved oxygen is caused in a membrane pool, and electric energy is consumed uselessly; meanwhile, the volume of the reactor is limited, the process flow of the reactor system is short, the denitrification and dephosphorization effects are poor, and the effluent is easy to fail to reach the standard; and the cabinet type integrated MBR (Membrane Bio-Reactor, MBR) occupies a relatively large floor space, and cannot be applied to villages and towns with limited land use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy-saving tower type internal circulation reactor which can obviously reduce the operation energy consumption and save the construction land under the premise of ensuring the quality of produced water to reach the standard and be stable so as to solve the problems existing in the prior art.
To achieve the above object, the present invention provides the following solutions:
the utility model provides an energy-saving tower type internal circulation reactor, which comprises an inner tower, an outer tower, a water inlet distribution pipe and a water production pipe, wherein the inner tower is arranged inside the outer tower, the top end of the side wall of the inner tower is provided with an inner overflow weir, the top end of the inner overflow weir can ensure that the upper end of the inner tower is communicated with the upper end of the outer tower, the outer part of the inner overflow weir is fixedly connected with a cofferdam ring, the water inlet distribution pipe can supply waste water into the cofferdam ring, the side wall of the cofferdam ring far away from the inner tower is an outer overflow weir, the height of the outer overflow weir is lower than that of the inner overflow weir, the upper end inside the inner 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 inside the inner tower is provided with a channel, the lower end of the outer tower is communicated with the lower end of the inner tower through the, be equipped with the aerator in the passageway, the aerator is located MBR membrane reaction unit is under, outer tower with from last to being equipped with aerobic biofilm reaction district, oxygen deficiency anaerobism biomembrane reaction district and mud pond district down in proper order between the interior tower, aerobic biofilm reaction district intussuseption is equipped with aerobic biofilm, aerobic biofilm has been wrapped up in on aerobic biofilm reaction district's surface and has been covered with aerobic biofilm, oxygen deficiency anaerobism biomembrane reaction district is filled up and is equipped with oxygen deficiency anaerobism biofilm, oxygen deficiency anaerobism biofilm has been wrapped up in on oxygen deficiency anaerobism biofilm's surface and has been covered with oxygen deficiency anaerobism biomembrane, mud pond district is located the below of passageway.
Preferably, the mud pool area is provided with a mud discharge port which is communicated with a mud discharge pipe, the mud discharge pipe is provided with a mud discharge valve, and the mud discharge pipe is communicated with a sludge pump.
Preferably, a water distributor is arranged above the aerator and is positioned right below the MBR membrane reaction unit.
Preferably, a hollow fiber microfiltration membrane is arranged in the MBR membrane reaction unit, and the hollow fiber microfiltration membrane is made of PTFE or PVDF.
Preferably, the aperture 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 m3/(m2·d)。
Preferably, the water level of the water outlet end of the water production pipe is lower than the water level of the water inlet end of the water production pipe.
Preferably, the water production pipe is communicated with a self-sucking pump.
Preferably, the water inlet 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 pond.
Preferably, the surface of the aerobic biological filler is wrapped with a double-layer aerobic biological film, and the surface of the anoxic anaerobic biological filler is wrapped with a double-layer anoxic anaerobic biological film.
Preferably, the aerobic biological filler and the anoxic anaerobic biological filler are hydrophilic combined fillers.
Compared with the prior art, the utility model has the following technical effects:
firstly, under the action of an aerator, mixed liquor and activated sludge enter an MBR membrane reaction unit for solid-liquid separation, separated clear water is discharged from a water production pipe, the separated mixed liquor and activated sludge fall under the action of gravity, and residual sludge is discharged from the bottom of the MBR membrane reaction unit; in addition, energy-saving tower type internal circulation reactor comprises an outer tower and an inner tower double-tower structure, circulating liquid after aerobic, anoxic and anaerobic reactions can be lifted to the inner tower through the lower end of the outer tower under the action of an aerator so as to realize internal circulation between the inner tower and the outer tower, the floor area of the reactor can be reduced, the use of a reflux pump can be avoided, the operation cost is further saved, and the water quality of produced water is ensured to reach the standard and be stable in the repeated circulation treatment process.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed for 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 it is obvious for a person skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of an energy-saving tower-type internal circulation reactor according to the present invention;
FIG. 2 is a top view of an energy-saving tower-type internal circulation reactor according to the present invention;
wherein: 1-outer tower, 2-inner tower, 3-outer overflow weir, 4-cofferdam ring, 5-inner overflow weir, 6-MBR membrane reaction unit, 7-water inlet distributor, 8-aerobic biomembrane reaction zone, 9-anoxic anaerobic biomembrane reaction zone, 10-mud pool zone, 11-aerator, 12-water distributor, 13-water production pipe, 14-mud discharge pipe, 15-water inlet lift pump, 16-mud pump and 17-self-priming pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present application without inventive step belong to the protection scope of the present application.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in further detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-2: the embodiment provides an energy-saving tower type internal circulation reactor, which comprises an inner tower 2, an outer tower 1, a water inlet distribution pipe 7 and a water production pipe 13, wherein the inner tower 2 is arranged inside the outer tower 1, the top end of the side wall of the inner tower 2 is provided with an inner overflow weir 5, the top end of the inner overflow weir 5 can enable the upper end of the inner tower 2 to be communicated with the upper end of the outer tower 1, the outer part of the inner overflow weir 5 is fixedly connected with a cofferdam ring 4, the water inlet distribution pipe 7 is communicated with the water outlet end of a water inlet lifting pump 15, the water inlet end of the water inlet lifting pump 15 is communicated with a wastewater pool, the water inlet distribution pipe 7 can supply wastewater into the cofferdam ring 4, the side wall of the cofferdam ring 4 far away from the inner tower 2 is an outer overflow weir 3, the height of the outer overflow weir 3 is lower than that of the inner overflow weir 5, so that circulating liquid in the inner tower 2 is mixed with newly-fed wastewater in the cofferdam ring 4, the outer overflow weir 3 of, communication between the inner tower 2 and the top of the outer tower 1 is formed.
An aerobic biofilm reaction zone 8, an anoxic anaerobic biofilm reaction zone 9 and a mud pit zone 10 are sequentially arranged between the outer tower 1 and the inner tower 2 from top to bottom, the mud pit zone 10 is positioned below the channel, aerobic biofilm filler is filled in the aerobic biofilm reaction zone 8, an aerobic biofilm is wrapped on the surface of the aerobic biofilm filler, a double-layer aerobic biofilm is wrapped on the surface of the aerobic biofilm filler, then circulating liquid overflows to the aerobic biofilm reaction zone 8 and performs aerobic reaction, pollutants are biochemically degraded, the aerobic biofilm reaction zone 8 has nitration and phosphorus absorption reactions, larger granular sludge formed in the aerobic biofilm reaction zone 8 quickly sinks to the mud pit zone 10 to be removed, oxygen enrichment in excessive aeration can be fully utilized as an oxygen source of the aerobic reaction, and waste of dissolved oxygen in the excessive aeration is avoided. The anoxic and anaerobic biofilm reaction zone 9 is filled with an anoxic and anaerobic biofilm filler, the surface of the anoxic and anaerobic biofilm filler is wrapped with an anoxic and anaerobic biofilm, the surface of the anoxic and anaerobic biofilm filler is wrapped with a double-layer anoxic and anaerobic biofilm, the aerobic biofilm filler and the anoxic and anaerobic biofilm filler are hydrophilic combined fillers, the hydrophilic combined fillers can be porous spherical combined suspended fillers, suspended modified fiber combined fillers and the like, the hydrophilic combined fillers of the embodiment can be selected from polyolefine or polyamide biofilms, circulating liquid continuously flows downwards after passing through the aerobic biofilm reaction zone 8 and enters the anoxic and anaerobic biofilm reaction zone 9, and the anoxic and anaerobic biofilm reaction zone 9 performs anoxic digestion reaction and denitrification to a certain degree. The inside upper end of interior tower 2 is provided with MBR membrane reaction unit 6, MBR membrane reaction unit 6's upper end and product water pipe 13 intercommunication, the passageway has been seted up to the inside lower extreme of interior tower 2, the passageway makes the lower extreme of outer tower 1 and the lower extreme of interior tower 2 communicate, be equipped with aerator 11 in the passageway, aerator 11 is located MBR membrane reaction unit 6 under, aerator 11's top is equipped with water-locator 12, and water-locator 12 is located MBR membrane reaction unit 6 under, under aerator 11's effect, the gas that circulation liquid and aeration supplied with rises, and the rivers flow evenly to MBR membrane reaction unit 6 under water-locator 12's effect. Activated sludge is settled in the sludge pool area 10 after aerobic, anoxic and anaerobic reactions, the circulating liquid is lifted by air blowing under the action of an aerator 11 to form ascending water flow, meanwhile, part of activated 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, clear water above the membrane is discharged through a water production pipe 13 after solid-liquid separation, the rest mixed liquid enters a cofferdam ring 4 through the upper end of the MBR membrane reaction unit 6, is mixed with inlet water and overflows to an aerobic biofilm reaction area 8, flows through the aerobic biofilm reaction area 8 and an anoxic and anaerobic biofilm reaction area 9, and realizes internal circulation under the action of the aerator 11.
Preferably, the mud pool area 10 is provided with a mud discharge port, the mud discharge port is communicated with a mud discharge pipe 14, the mud discharge pipe 14 is provided with a mud discharge valve, the mud discharge pipe 14 is communicated with a mud pump 16, and further the residual mud in the mud pool area 10 can be discharged regularly.
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 aperture 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 m3/(m2·day)。
Preferably, the water level of the water outlet end of the water production pipe 13 is lower than the water level of the water inlet end of the water production pipe 13, and then the clear water after solid-liquid separation is discharged by using the negative pressure generated by the higher liquid level difference, so as to save the operation cost. The water production pipe 13 can also be communicated with a self-sucking pump 17 to suck the clear water after solid-liquid separation.
Before entering the reactor, the wastewater can be filtered by a coarse/fine grid, and then is lifted to a water inlet distribution pipe 7 by a water inlet lifting pump 15, the inlet water is uniformly distributed in a cofferdam ring 4, mixed with the circulating liquid overflowing outwards from the inner tower 2 for oxygenation, and then overflows from an overflow weir 3 to enter an aerobic biomembrane reaction zone 8 after being mixed for aerobic reaction; after aerobic reaction, the sewage is sequentially subjected to anoxic and anaerobic reactions, then is carried to roll up along with the airflow 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 current to ensure the proper sludge concentration in the reactor; finally, the circulating liquid is treated and filtered by an MBR membrane reaction unit 6 to discharge 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 updraft rolling, the circulating liquid in the inner tower 2 is continuously blown out of the inner overflow weir 5, enters the cofferdam ring 4 and is mixed with inlet water to form circulating oxygen-enriched water, and dissolved oxygen in the oxygen-enriched circulating water is taken as an oxygen source and enters the aerobic biochemical membrane reaction zone to complete an inner circulation process.
The beneficial effects of this embodiment: (1) through the double overflow action of the inner overflow weir 5 and the outer overflow weir 3, the newly-fed wastewater of the water inlet and distribution pipe 7 is fully mixed with the circulating liquid, 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 operation cost of the reactor can be further reduced; (2) the double-tower structure of the inner tower 2 and the outer tower 1 ensures that the inner tower 2 is compatible with a sludge selector to activate aerobic sludge, so that the aerobic sludge is in a full hunger state before entering an aerobic reaction zone, and the aerobic digestion rate of pollutants is improved; (3) the whole reactor does not need to be refluxed by a reflux pump, and internal circulation power of circulating liquid is provided by utilizing the action of rapid rising disturbance of aeration gas-liquid, so that internal circulation is formed between the inner tower 2 and the outer tower 1, the floor area of the reactor is reduced, and the energy consumption and the operation cost of the reactor are reduced; (4) the continuous internal circulation of aerobic-anoxic-anaerobic reaction realizes the high-efficiency denitrification and dephosphorization function in the reactor so as to ensure that the quality of produced water reaches the standard.
The principle and implementation of the present invention are explained in the present specification by applying specific examples, and the above description of the embodiments is only used to help understand the method of the present invention and its core idea; meanwhile, for a person skilled in the art, the specific embodiments and the application range may be changed according to the idea of the present application. In summary, the description should not be construed as limiting the invention to the particular forms disclosed.
Claims (10)
1. An energy-saving tower type internal circulation reactor is characterized in that: the device comprises an inner tower, an outer tower, a water inlet distribution pipe and a water production pipe, wherein the inner tower is arranged inside the outer tower, the top end of the side wall of the inner tower is provided with an inner overflow weir, the top end of the inner overflow weir can enable the upper end of the inner tower to be communicated with the upper end of the outer tower, the outer part of the inner overflow weir is fixedly connected with a cofferdam ring, the water inlet distribution pipe can supply waste water into the cofferdam ring, the side wall of the cofferdam ring, far away from the inner tower, is an outer overflow weir, the height of the outer overflow weir is lower than that of the inner overflow weir, the upper end inside the inner 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 inside the inner tower is provided with a channel, the lower end of the outer tower is communicated with the lower end of the inner tower through the channel, an MBR membrane reaction unit is arranged in the channel, and, outer tower with from last to being equipped with aerobic biofilm reaction zone, oxygen deficiency anaerobism biomembrane reaction zone and mud pond district down in proper order between the interior tower, aerobic biofilm reaction zone intussuseption is equipped with aerobic biofilm carrier, aerobic biofilm carrier's surface is wrapped up in and is covered with aerobic biofilm, oxygen deficiency anaerobism biomembrane reaction zone fills in and is equipped with oxygen deficiency anaerobism biofilm carrier, oxygen deficiency anaerobism biofilm carrier's surface is wrapped up in and is covered with oxygen deficiency anaerobism biomembrane, mud pond district is located the below of passageway.
2. The energy-saving tower type internal circulation reactor according to claim 1, wherein: the sludge pond area is provided with a sludge discharge port which 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.
3. The energy-saving tower type internal circulation reactor according to claim 1, wherein: and a water distributor is arranged above the aerator and is positioned right below the MBR membrane reaction unit.
4. The energy-saving tower type internal circulation reactor according to claim 1, wherein: and a hollow fiber microfiltration membrane is arranged in the MBR membrane reaction unit and is made of PTFE or PVDF.
5. The energy-saving tower type internal circulation reactor according to claim 4, wherein: the aperture of the hollow fiber micro-filtration membrane is 0.1-0.2 μm, and the membrane flux of the hollow fiber micro-filtration membrane is 0.5-0.8 m3/(m2·d)。
6. The energy-saving tower type internal circulation reactor according to claim 1, wherein: the water level of the water outlet end of the water production pipe is lower than the water level of the water inlet end of the water production pipe.
7. The energy-saving tower type internal circulation reactor according to claim 1, wherein: the water production pipe is communicated with a self-priming pump.
8. The energy-saving tower type internal circulation reactor according to claim 1, wherein: the water inlet 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 pool.
9. The energy-saving tower type internal circulation reactor according to claim 1, wherein: the surface of the aerobic biological filler is wrapped with the double-layer aerobic biological film, and the surface of the anoxic anaerobic biological filler is wrapped with the double-layer anoxic anaerobic biological film.
10. The energy-saving tower type internal circulation reactor according to claim 1, wherein: the aerobic biological filler and the anoxic anaerobic biological filler are hydrophilic combined fillers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921296008.1U CN210438489U (en) | 2019-08-12 | 2019-08-12 | Energy-saving tower type internal circulation reactor |
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| CN201921296008.1U CN210438489U (en) | 2019-08-12 | 2019-08-12 | Energy-saving tower type internal circulation reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110372097A (en) * | 2019-08-12 | 2019-10-25 | 桂润环境科技股份有限公司 | A kind of energy-saving tower inner circulation reactor |
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2019
- 2019-08-12 CN CN201921296008.1U patent/CN210438489U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110372097A (en) * | 2019-08-12 | 2019-10-25 | 桂润环境科技股份有限公司 | A kind of energy-saving tower inner circulation reactor |
| CN110372097B (en) * | 2019-08-12 | 2024-06-25 | 桂润环境科技股份有限公司 | Method for treating wastewater by using energy-saving tower type internal circulation reactor |
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