CN217265062U - Improved A2/O + MBBR water treatment equipment - Google Patents
Improved A2/O + MBBR water treatment equipment Download PDFInfo
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- CN217265062U CN217265062U CN202123220402.7U CN202123220402U CN217265062U CN 217265062 U CN217265062 U CN 217265062U CN 202123220402 U CN202123220402 U CN 202123220402U CN 217265062 U CN217265062 U CN 217265062U
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- 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
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Abstract
An improved A2/O + MBBR water treatment device is characterized in that sewage passes through a pre-anoxic tank, an anaerobic tank, an anoxic tank, an aerobic tank and an aerobic MBBR tank after entering, the pre-anoxic tank has the function of a biological selector, organisms in the pre-anoxic tank carry out anaerobic ammonia oxidation reaction, the biological denitrification effect can be improved, the sewage enters the anaerobic tank, the anoxic tank and the aerobic tank, and processes of phosphorus removal and organic matter ammonification, nitrogen removal, BOD removal and phosphorus nitrification and absorption are respectively carried out.
Description
Technical Field
The utility model relates to an improved A2/O + MBBR water treatment equipment.
Background
A2/O is the abbreviation (Anaerobic-Anoxic-aerobic) of the first letter of Anaerobic-aerobic-Oxic English, is a commonly used secondary sewage treatment process, has the function of synchronous denitrification and dephosphorization, and can be used for secondary sewage treatment or tertiary sewage treatment; after subsequent advanced treatment, the sewage can be recycled as reclaimed water, and has good denitrification and removal effects. The traditional A2/O process has the defect that the denitrification and dephosphorization effects are difficult to further improve, and based on the current situation, the traditional A2/O process is improved, the sewage treatment effect is improved by a preposed pre-anoxic tank which has the function of a biological selector, the organisms in the tank carry out anaerobic ammonia oxidation reaction, the basic principle of the anaerobic ammonia oxidation is that under the anaerobic condition, the microorganisms directly use NH4+ as an electron donor, research shows that ammonia and nitrite can directly react to form nitrogen in the anaerobic ammonia oxidation process by taking NO 3-and NO 2-as electron acceptors, wherein ammonia is used as an electron donor, nitrite is used as an electron acceptor, nitrate salt is reduced into nitrite salt under the anoxic state, then nitrite salt reacts with NH4+ -N to generate nitrogen, thereby reducing TN in the wastewater.
MBBR (moving BedBi biofilm reactor) is a novel efficient sewage treatment method, the MBBR makes the carrier in a fluidized state by relying on aeration in an aeration tank and the lifting action of water flow, and then forms activated sludge for suspension growth and a biofilm for attachment growth, so that the moving bed biofilm uses the whole reactor space, and the superiority of both attachment phase and suspension phase organisms is fully exerted.
At present, the limiting factor of the water treatment effect of the MBBR technology is mainly the performance of the filter material. The common MBBR filter material has the defects of limited specific surface area, large dosage, easy blockage and the like, for example, the specific surface area of the PE plastic filter material is 500-1000m2/m3, the effective specific surface area is only 400-600m2/m3, the dosage accounts for 30-60 percent, and the cost is too high; the specific surface area that uses more high density polyethylene suspension carrier at present also only is 450 supplyes one's food 1200m2/m3, and traditional filter material all need set up the support, the cost is higher, the filter material density of MBBR fluidization is better when being close to water more, but most of filter material fluidization nature of using at present is relatively poor, traditional PE plastic filter material biological affinity is poor to lead to it to be difficult to the biofilm formation, and in the MBBR equipment of operation at present, mutual collision often appears in the stereoplasm filter material and causes the filter material damage, mutual friction between filter material and the interception net leads to the interception net to appear the interception leak failure, cut between filter material and the pool wall and rub each other and cause the destruction scheduling problem to the pool wall, lead to the fortune dimension difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide an improved A2/O + MBBR water treatment device.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a A2O + MBBR water treatment facilities of improvement, is including the oxygen deficiency pond in advance, anaerobism pond, oxygen deficiency pond, good oxygen pond and the good oxygen MBBR pond that connect gradually and all throw and have hydrophilic polyurethane filter material, be connected with mixed liquid backwash pump between good oxygen pond and the oxygen deficiency pond, the oxygen deficiency pond in advance is connected with the delivery port, good oxygen MBBR pond is connected with the water inlet.
And the aerobic tank and the aerobic MBBR tank are provided with aeration pipes, and the aeration pipes are connected with Roots blowers.
Still include the blower room, the roots's fan is placed in the blower room.
The water outlet is provided with a vertical sewage pump.
The effluent parts of the pre-anoxic tank, the anaerobic tank, the anoxic tank, the aerobic tank and the aerobic MBBR tank are all provided with filter material intercepting nets.
The filter material intercepting net is provided with round steel and flat steel.
The hydrophilic polyurethane filter material is installed through a filter material hard support, and the filter material hard support is of a double-layer structure.
Has the advantages that:
the sewage enters the pre-anoxic tank, the anaerobic tank, the anoxic tank, the aerobic tank and the aerobic MBBR tank. The pre-anoxic tank has the function of a biological selector, organisms in the tank carry out anaerobic ammonia oxidation reaction, the biological denitrification effect can be improved, the sewage enters the anaerobic tank, the anoxic tank and the aerobic tank, the processes of phosphorus removal and ammoniation, nitrogen removal, BOD removal, nitrification and phosphorus absorption of organic matters are respectively carried out, the nitrification liquid in the aerobic tank enters the anaerobic tank again through the mixed liquid reflux pump, the total nitrogen removal efficiency is convenient to improve, oxygen supply is carried out in the aerobic tank and the aerobic MBBR tank through the aeration pipes, the oxygen content in water is improved, the organic matters and the denitrification process are convenient to carry out, hydrophilic polyurethane filter materials are selectively added into the tank, the nitrogen and phosphorus removal and biofilm formation effects are improved, and the biological bacteria reaction is promoted.
Drawings
Fig. 1 is a flow chart of the present invention.
Fig. 2 is a front view of a filter material intercepting net.
Fig. 3 is a side view of a filter material intercepting screen.
Fig. 4 is an enlarged view of a portion a.
FIG. 5 is a plan view of the installation of the cell body stuffing.
The filter material intercepting net comprises a filter material intercepting net 1, round steel 2 and flat steel 3.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in the figure, an improved A2/O + MBBR water treatment device comprises a pre-anoxic tank, an anaerobic tank, an anoxic tank, an aerobic tank and an aerobic MBBR tank which are sequentially connected and are all added with hydrophilic polyurethane filter materials, wherein a mixed liquid reflux pump is connected between the aerobic tank and the anoxic tank, the pre-anoxic tank is connected with a water outlet, and the aerobic MBBR tank is connected with a water inlet.
The hydrophilic polyurethane filter material is used as a biological membrane carrier, has the advantages of strong hydrophilicity, high membrane-forming speed and the like, and the membrane-forming biomass of the filter material per unit volume reaches 7.284kg/m3, which is about 1.98 times of that of the traditional PE filter material. After biofilm microscopic examination and flora identification, the filter material after biofilm formation is discovered to have increased biomass on the transverse direction and has the advantage of reconstructing a colony structure system in a biochemical pool in the longitudinal direction, and the three-dimensional space structure of the filter material provides the largest protected area for the biofilm, so the synchronous nitrification and denitrification of the surface biofilm is far greater than that of other types of filter materials, the total nitrogen removal rate is greater than 40%, and the filter material can be in a better fluidization state by arranging an aeration pipe at the bottom of the pool, so that the sewage purification effect is improved.
And the aerobic tank and the aerobic MBBR tank are provided with aeration pipes, and the aeration pipes are connected with Roots blowers.
Still include the blower room, the roots's fan is placed in the blower room.
The sewage enters the pre-anoxic tank, the anaerobic tank, the anoxic tank, the aerobic tank and the aerobic MBBR tank. The pre-anoxic tank has the function of a biological selector, organisms in the tank carry out anaerobic ammonia oxidation reaction, the biological denitrification effect can be improved, the later sewage enters the anaerobic tank, the anoxic tank and the aerobic tank, the processes of phosphorus removal and organic matter ammonification, nitrogen removal, BOD removal and phosphorus nitrification and absorption are respectively carried out, the nitrification liquid in the aerobic tank enters the anaerobic tank again through a mixed liquid reflux pump, the total nitrogen removal efficiency is convenient to improve, a Roots blower is arranged in a blower room, oxygen supply is carried out in the aerobic tank and an aerobic MBBR tank through a lifting aeration pipe, the oxygen content in water is improved, the organic matter and the nitrogen removal process are convenient to carry out, hydrophilic polyurethane filter materials are selectively added into the tank, the nitrogen and phosphorus removal and biofilm formation effects are improved, and the biological bacteria reaction is promoted.
The water outlet is provided with a vertical sewage pump.
The effluent parts of the pre-anoxic tank, the anaerobic tank, the anoxic tank, the aerobic tank and the aerobic MBBR tank are all provided with filter material intercepting nets, the effluent parts of the tanks are provided with the filter material intercepting nets, 304 stainless steel materials are used, and compared with a process without the intercepting nets, the process can prevent the filter materials from losing and improve the effects of biofilm formation and biological reaction.
Filter material intercepting net 1 is equipped with round steel 2 and band steel 3, and filter material intercepting net 1 adopts 304 stainless steel material, and it crosses the water hole diameter and is 9mm, can play the fine effect of the filter material that dams, sets up round steel, band steel in the middle of the intercepting net in order to play the effect of bearing. The 304 stainless steel material has good corrosion resistance and mechanical strength.
The hydrophilic polyurethane filter material is installed through a filter material hard support, and the filter material hard support is of a double-layer structure.
The whole set of equipment has good nitrogen and phosphorus removal effect, is economical and practical, is simple to maintain, and can realize the functions of nitrogen and phosphorus removal of sewage and water quality improvement.
Claims (7)
1. An improved A2/O + MBBR water treatment device is characterized in that: the device comprises a pre-anoxic tank, an anaerobic tank, an anoxic tank, an aerobic tank and an aerobic MBBR tank which are sequentially connected and are all added with hydrophilic polyurethane filter materials, wherein a mixed liquid reflux pump is connected between the aerobic tank and the anoxic tank, the pre-anoxic tank is connected with a water outlet, and the aerobic MBBR tank is connected with a water inlet.
2. The improved a2/O + MBBR water treatment plant of claim 1, wherein: and aeration pipes fixed by expansion screws are arranged at the bottoms of the aerobic tank and the aerobic MBBR tank, and are connected with Roots blowers.
3. The improved a2/O + MBBR water treatment plant of claim 2, wherein: the Roots blower is placed in the blower room.
4. The improved a2/O + MBBR water treatment plant of claim 1, wherein: the water outlet is provided with a vertical sewage pump.
5. The improved a2/O + MBBR water treatment plant of claim 1, wherein: the effluent parts of the pre-anoxic tank, the anaerobic tank, the anoxic tank, the aerobic tank and the aerobic MBBR tank are all provided with filter material interception nets (1).
6. The improved A2/O + MBBR water treatment plant of claim 5, wherein: the filter material intercepting net is provided with round steel (2) and flat steel (3).
7. The improved a2/O + MBBR water treatment plant of claim 1, wherein: the hydrophilic polyurethane filter material is installed through a filter material hard support, and the filter material hard support is of a double-layer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123220402.7U CN217265062U (en) | 2021-12-21 | 2021-12-21 | Improved A2/O + MBBR water treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123220402.7U CN217265062U (en) | 2021-12-21 | 2021-12-21 | Improved A2/O + MBBR water treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217265062U true CN217265062U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123220402.7U Active CN217265062U (en) | 2021-12-21 | 2021-12-21 | Improved A2/O + MBBR water treatment equipment |
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| Country | Link |
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| CN (1) | CN217265062U (en) |
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2021
- 2021-12-21 CN CN202123220402.7U patent/CN217265062U/en active Active
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