CN209778596U - Circulating denitrification biomembrane reactor - Google Patents
Circulating denitrification biomembrane reactor Download PDFInfo
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- CN209778596U CN209778596U CN201920446222.4U CN201920446222U CN209778596U CN 209778596 U CN209778596 U CN 209778596U CN 201920446222 U CN201920446222 U CN 201920446222U CN 209778596 U CN209778596 U CN 209778596U
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Abstract
the utility model discloses a circulating denitrification biofilm reactor, including the reactor main part, this reactor main part is according to order divided equalizing basin, the anaerobism pond, the oxygen deficiency pond, one-level contact reaction pond, second grade contact reaction pond and sedimentation tank, the equalizing basin is high-order equalizing basin, anaerobism pond and oxygen deficiency bottom of the pool portion intercommunication, built-in first filler in this oxygen deficiency pond, one-level contact reaction pond and second grade contact reaction bottom of the pool portion intercommunication, built-in second filler in one-level contact reaction pond and second grade contact reaction pond middle part, and the bottom is equipped with aeration equipment, wherein second grade contact reaction pond links to oxygen deficiency pond top through interior backflow pipeline, aeration equipment all connects the air pump with interior backflow pipeline, second grade contact reaction pond and sedimentation tank intercommunication. The utility model discloses combine anaerobism-oxygen deficiency-good oxygen biomembrane technique to establish integration contact oxidation reaction system, utilize the aeration to make the inside and outside density difference that produces of back flow, make the liquid of nitrifying backward flow, also can simplify the operation maintenance operation when reaching the denitrogenation, and then practice thrift the effect of energy consumption.
Description
Technical Field
The utility model relates to a rural sewage treatment technology, in particular to a circulating denitrification biomembrane reactor.
Background
In recent years, China still adopts a mode of urban sewage treatment when treating rural domestic sewage, for rural sewage with small water volume, dispersed discharge and large change of water quality and water quantity, the urban sewage treatment technology has the defects of high construction and operation cost, insufficient financial capacity of most rural areas and insufficient family payment capacity of rural areas, the phenomenon that the sewage treatment facility is stopped because the operation and maintenance cost of the sewage treatment facility cannot be borne by villages and towns frequently occurs in the conventional rural sewage treatment facility, and secondary pollution is caused because no human maintenance and supervision exists for a long time. In order to meet the main policies of rural environment development such as ecological civilization, beautiful countryside, urban environment public service equalization and the like, a small-scale sewage treatment technical device with high automation degree and an ecological technology integrated with the environment are designed.
At present, the decentralized sewage treatment technology in rural areas of China faces two major problems: the aerobic treatment technology has good treatment effect and stable operation, but has high energy consumption and complex operation, and is difficult to popularize and use in rural areas; secondly, anaerobic biological treatment can be carried out without power, the operation is simpler, but the quality of inlet water is limited, and the inlet water is difficult to reach the standard and be discharged.
The Chinese utility model with publication number CN 206901995 discloses an integrated MBR membrane sewage treatment device, which comprises a regulating tank, an anaerobic tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank, a sludge tank and a disinfection tank which are connected in sequence; a sewage lifting pump is arranged in the regulating tank, the water outlet end of the sewage lifting pump is introduced into the anaerobic tank through a pipeline, a stirring device is arranged at the bottom of the anaerobic tank, elastic filler is arranged in the middle of the anaerobic tank, combined filler is arranged in the middle of the anoxic tank, perforated aeration pipes are arranged at the bottom of the anoxic tank, MBBR suspended filler is arranged in the middle of each of the primary aerobic tank and the secondary aerobic tank, and microporous aeration heads are arranged at the bottoms of each of the primary aerobic tank and the secondary aerobic tank; the middle part of the sedimentation tank is provided with honeycomb packing, the bottom of the sedimentation tank is provided with a sludge pump, and the disinfection tank is internally provided with an ultraviolet disinfection device; the mud inlet end of the sludge pump is positioned in the honeycomb packing, and the mud outlet end of the sludge pump is arranged in the sludge tank. The utility model discloses an organic pollutant removal rate is high, and it is stable to go out water. However, in practice, the technical scheme is adopted for treatment, the reaction is insufficient, the denitrification capability is still insufficient, the water quality still has the problem of overhigh nitrogen content, and the pumping mode is adopted at multiple positions, so that the energy consumption is higher.
SUMMERY OF THE UTILITY MODEL
The utility model provides a circulation denitrogenation biofilm reactor, the technical problem who exists among its aim at solution current sewage treatment device.
A circulating denitrification biomembrane reactor comprises a reactor main body, wherein the reactor main body is provided with a regulating tank, an anaerobic tank, an anoxic tank, a primary contact reaction tank, a secondary contact reaction tank and a sedimentation tank which are separated in sequence, the regulating tank is a high-level regulating tank with the position higher than the liquid level of the anaerobic tank, the high-level regulating tank is connected with the anaerobic tank through a water inlet pipeline arranged at the lower position of the side part, the anaerobic tank is communicated with the bottom of the anoxic tank through a tank wall bottom channel, a first filler is arranged in the anoxic tank, the treated water in the anoxic tank flows into the primary contact reaction tank in a high-level overflow mode, the primary contact reaction tank is communicated with the secondary contact reaction tank through a tank wall bottom channel, a second filler is arranged in the middle parts of the primary contact reaction tank and the secondary contact reaction tank, and the bottom of the primary contact reaction tank and the secondary contact reaction tank is provided with an aeration device, wherein the secondary contact reaction tank is connected to the upper, the aeration device and the inner reflux pipeline are both connected with an air pump, the secondary contact reaction tank is communicated with the sedimentation tank through a channel at the bottom of the tank wall, the top of the sedimentation tank is provided with an overflow water outlet, and the bottom of the sedimentation tank is provided with a sludge discharge pipeline.
Wherein the first filler is fixed by a filler bracket.
Wherein the first filler is a biological filler.
Wherein the second filler is an air ball suspension filler.
Wherein, the aeration device is an aeration disc.
Wherein, the bottom of the side wall close to the outside of the sedimentation tank is an inward inclined plane.
Wherein, be equipped with floater liquid level controller in the high-order regulation pond.
The biological filler and the air ball suspension filler are the prior art and are not described herein.
The invention combines anaerobic-anoxic-aerobic biomembrane technology to establish an integrated contact oxidation reaction system, utilizes aeration to generate density difference inside and outside a return pipe, enables the nitrified liquid to flow back, achieves denitrification and can simplify operation and maintenance operation, further saves energy consumption, and the system has certain removal effect on SS, organic pollutants, ammonia nitrogen and total nitrogen.
The circulating denitrification biomembrane reactor has the advantages of small occupied area, high denitrification and dephosphorization efficiency, simple management, low operation and construction cost and the like for rural dispersive sewage treatment. The anaerobic treatment device has the advantages of alternative operation of anaerobic treatment, anoxic treatment and contact oxidation, synchronous nitrogen and phosphorus removal, basically no sludge bulking problem, simple process flow, short total hydraulic retention time, no need of external carbon source and sewage treatment effect meeting rural sewage discharge standards.
The circulating denitrification biomembrane reactor comprises a high-level regulating tank, an anaerobic tank, an anoxic tank, a primary contact reaction tank, a secondary contact reaction tank and a sedimentation tank. The water flows of the anaerobic tank and the anoxic tank are sequentially carried out in a plug flow mode, and the high-content sewage is prevented from flowing back to the low-content area. The contact oxidation area adopts complete mixed flow, which is beneficial to the oxidative degradation of organic matters and ammonia nitrogen. The reactor is provided with an air pump, has the functions of aeration and backflow, and is simple to operate. The anoxic tank is provided with biological filler, and the biological filler in the contact oxidation tank is air ball suspension filler which has high specific surface area, is not easy to block and is easy to form a film.
The sewage enters the high-level water tank through the water collecting pipe, the high-level regulating tank has the function of regulating the water quality and the water quantity, the water in the high-level regulating tank automatically flows into the circulating denitrification biomembrane reactor, the sewage firstly enters the anaerobic tank, biodegradable macromolecular organic matters in the anaerobic tank are converted into VFAs (volatile fatty acids) under the action of facultative anaerobic fermentation bacteria, the phosphorus storage bacteria ingest the VFAs (volatile fatty acids) to synthesize PHB (poly-beta-hydroxybutyric acid), and excess phosphorus stored in the body is released. Then the wastewater enters an anoxic tank, denitrifying bacteria take nitrate nitrogen brought by the backflow of the mixed liquor in the contact reaction tank as an electron acceptor and organic carbon in the wastewater as an electron donor to carry out a denitrification process, thereby achieving the purposes of simultaneously degrading organic matters and denitrifying. Next, the wastewater enters a two-stage contact reaction tank where phosphorus-storing bacteria, in addition to absorbing and utilizing the biodegradable organic substances remaining in the wastewater, primarily decompose PHB (poly-beta-hydroxybutyrate) stored in the body, thereby absorbing a large amount of phosphorus. And finally, the sewage enters a sedimentation tank, the water after sedimentation overflows and is discharged, and the sludge is discharged from the bottom of the tank.
Drawings
FIG. 1 is a schematic view of a circulating denitrification biofilm reactor according to the present invention.
In the figure, a high-level adjusting tank-1, an anaerobic tank-2, an anoxic tank-3, a first-stage contact reaction tank-4, a second-stage contact reaction tank-5, a sedimentation tank-6, an internal reflux pipeline-7, a biological filler-8, an air ball suspension filler-9, an air pump-10 and an aeration disc-11.
Detailed Description
The utility model discloses a following embodiment carries out further explanation:
Referring to fig. 1, a circulating denitrification biomembrane reactor, a high-level regulating tank 1, an anaerobic tank 2, an anoxic tank 3, a primary contact reaction tank 4, a secondary contact reaction tank 5 and a sedimentation tank 6 which are sequentially separated from each other are arranged on a reactor main body, the high-level regulating tank 1 is arranged at a position higher than the liquid level of the anaerobic tank 2, a floating ball level controller is arranged in the high-level regulating tank 1, the high-level regulating tank is connected with the anaerobic tank 2 through a water inlet pipeline arranged at the lower position of the side part, the anaerobic tank 2 is communicated with the bottom of the anoxic tank 3 through a tank wall bottom channel, a filler bracket is arranged in the anoxic tank 3, a biological filler 8 is arranged in the filler bracket, the treated water in the anoxic tank 3 flows into the primary contact reaction tank 4 through a high-level overflow mode, the primary contact reaction tank 4 is communicated with the secondary contact reaction tank 5 through a tank wall bottom channel, and an air ball suspension filler 9 is arranged in the middle parts, and the bottom of the first-stage contact reaction tank 5 and the bottom of the second-stage contact reaction tank 5 are provided with aeration discs 11, wherein the second-stage contact reaction tank 5 is connected to the upper part of the anoxic tank 3 through an inner return pipeline 7, the aeration discs 11 and the inner return pipeline 7 are controlled by an air pump 10, the second-stage contact reaction tank 5 is communicated with a sedimentation tank 6 through a channel at the bottom of the tank wall of the second-stage contact reaction tank, the top of the sedimentation tank 6 is provided with an overflow water outlet, the bottom of the sedimentation tank is provided with a sludge discharge pipeline, the bottom of the outer side wall of the sedimentation tank 6 is an inward.
The foregoing description has set forth in detail the description and illustration of the present invention. It is not intended to limit the invention to the form and manner disclosed. In the above manner, corresponding modifications or changes may be made. The examples are discussed to better illustrate the principles of the invention and its practical application to thereby make various modifications and meet other specific needs. All such modifications and variations are within the scope of the invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly and legally entitled.
Claims (7)
1. A circulating denitrification biomembrane reactor comprises a reactor main body, wherein the reactor main body comprises a regulating tank, an anaerobic tank, an anoxic tank, a first-stage contact reaction tank, a second-stage contact reaction tank and a sedimentation tank which are sequentially separated, and is characterized in that: the regulating tank is a high-level regulating tank which is arranged at a position higher than the liquid level of the anaerobic tank, the high-level regulating tank is connected with the anaerobic tank through a water inlet pipeline which is arranged at the lower position of the side part, the anaerobic tank is communicated with the bottom of the anoxic tank through a channel at the bottom of the tank wall, first filler is arranged in the anoxic tank, the treated water in the anoxic tank flows into a primary contact reaction tank through a high-level overflow mode, the primary contact reaction tank is communicated with a secondary contact reaction tank through a channel at the bottom of the tank wall, second filler is arranged in the middle of the primary contact reaction tank and the secondary contact reaction tank, aeration devices are arranged at the bottom of the primary contact reaction tank and the secondary contact reaction tank, the secondary contact reaction tank is connected to the upper part of the anoxic tank through an internal reflux pipeline, the aeration devices are connected with air pumps through the internal reflux pipeline, the secondary contact reaction tank is communicated with the sedimentation tank through a channel at the bottom, the bottom of the sludge discharging pipe is provided with a sludge discharging pipe.
2. The cyclic denitrification biofilm reactor of claim 1, wherein: the first filler is fixed through a filler bracket.
3. The cyclic denitrification biofilm reactor of claim 1, wherein: the first filler is a biological filler.
4. The cyclic denitrification biofilm reactor of claim 1, wherein: the second filler is air ball suspension filler.
5. The cyclic denitrification biofilm reactor of claim 1, wherein: the aeration device is an aeration disc.
6. The cyclic denitrification biofilm reactor of claim 1, wherein: the bottom of the outer side wall of the sedimentation tank is an inward inclined plane.
7. The cyclic denitrification biofilm reactor of claim 1, wherein: and a floating ball liquid level controller is arranged in the high-level adjusting tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920446222.4U CN209778596U (en) | 2019-04-03 | 2019-04-03 | Circulating denitrification biomembrane reactor |
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| CN201920446222.4U CN209778596U (en) | 2019-04-03 | 2019-04-03 | Circulating denitrification biomembrane reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111153562A (en) * | 2020-01-21 | 2020-05-15 | 贵州民族大学 | Miniature biogas fermentation liquid treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111153562A (en) * | 2020-01-21 | 2020-05-15 | 贵州民族大学 | Miniature biogas fermentation liquid treatment device |
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