CN111196665A - Integrated sewage treatment equipment based on A2/O coupling MBBR technology and treatment process thereof - Google Patents
Integrated sewage treatment equipment based on A2/O coupling MBBR technology and treatment process thereof Download PDFInfo
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- CN111196665A CN111196665A CN202010068757.XA CN202010068757A CN111196665A CN 111196665 A CN111196665 A CN 111196665A CN 202010068757 A CN202010068757 A CN 202010068757A CN 111196665 A CN111196665 A CN 111196665A
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- 239000010865 sewage Substances 0.000 title claims abstract description 80
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 230000008878 coupling Effects 0.000 title claims abstract description 29
- 238000010168 coupling process Methods 0.000 title claims abstract description 29
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 29
- 238000005516 engineering process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000005189 flocculation Methods 0.000 claims abstract description 45
- 230000016615 flocculation Effects 0.000 claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000001556 precipitation Methods 0.000 claims abstract description 17
- 239000010802 sludge Substances 0.000 claims description 19
- 238000004062 sedimentation Methods 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 15
- 239000003814 drug Substances 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 238000005276 aerator Methods 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 239000011574 phosphorus Substances 0.000 claims description 11
- 206010021143 Hypoxia Diseases 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 7
- 241001148470 aerobic bacillus Species 0.000 claims description 6
- 239000008394 flocculating agent Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 238000007872 degassing Methods 0.000 claims 3
- 241001046548 Anaerobium Species 0.000 claims 1
- 239000002360 explosive Substances 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002354 daily effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/308—Biological phosphorus removal
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an integrated sewage treatment device based on an A2/O coupling MBBR technology and a treatment process thereof, belonging to the technical field of sewage treatment, and comprising a shell, wherein a reaction box, a flocculation device, a horizontal flow type inclined plate precipitation device and a UV disinfection device are sequentially arranged in an inner cavity of the shell from left to right, a dosing mechanism is arranged at the top of the flocculation device, a water inlet pipe is communicated with the top of the left side of the flocculation device at the top of the left side of the reaction box, a water inlet pipe is communicated with the top of the right side of the reaction box through a connecting pipe, the bottom of the right side of the flocculation device is communicated with the top of the left side of the horizontal flow type inclined plate precipitation device through a lift pump and a connecting pipe, and the top of the right side of the horizontal flow type inclined plate precipitation device is communicated with the UV disinfection device through a communicating pipe. The operation cost is saved under the condition of ensuring that the water quality reaches the standard.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to integrated sewage treatment equipment based on an A2/O coupling MBBR technology and a treatment process thereof.
Background
Sewage treatment: the sewage is purified to reach the water quality requirement of being discharged into a certain water body or being reused. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.
The sewage treatment is generally divided into production sewage treatment and domestic sewage treatment according to the sewage source classification, the production sewage comprises industrial sewage, agricultural sewage, medical sewage and the like, and the domestic sewage is sewage produced in daily life and refers to various forms of complex mixtures of inorganic matters and organic matters, including ① floating and suspended solid particles, ② colloidal and gelatinous diffusants and ③ pure solution.
A2/O process, anaerobic-anoxic-aerobic, is a two-stage biochemical process, which can remove nitrogen and phosphorus by biological treatment to obtain high-quality effluent. The MBBR filler is a microbial carrier applied to an MBBR process and mainly provides an environment suitable for growth of microorganisms. The MBBR filler is a novel bioactive carrier, adopts a scientific formula, is formed by fusing a plurality of trace elements which are beneficial to the rapid attachment and growth of microorganisms in a high polymer material according to different sewage properties and modifying and constructing through a special process, and has the advantages of large specific surface area, good hydrophilicity, high bioactivity, rapid film formation, good treatment effect, long service life and the like.
When domestic sewage in cities and towns or rural areas is treated, the A2/O process is often used, but when agricultural sewage is treated by the traditional A2/O process, the nitrogen and phosphorus removal efficiency is low, membrane replacement operation is often required, and the operation and maintenance cost is high.
Based on the above, the invention designs the integrated sewage treatment equipment and the treatment process thereof based on the A2/O coupling MBBR technology, so as to solve the problems.
Disclosure of Invention
The invention aims to provide integrated sewage treatment equipment based on an A2/O coupling MBBR technology and a treatment process thereof, so as to solve the problems that the traditional A2/O process provided in the background art has low nitrogen and phosphorus removal efficiency, needs membrane replacement operation frequently and has high operation and maintenance cost when used for treating agricultural sewage.
In order to achieve the purpose, the invention provides the following technical scheme: the integrated sewage treatment equipment based on the A2/O coupling MBBR technology comprises a shell, wherein a reaction box, a flocculation device, a horizontal flow type inclined plate precipitation device and a UV disinfection device are sequentially arranged in an inner cavity of the shell from left to right, a dosing mechanism is arranged at the top of the flocculation device, a water inlet pipe is communicated with the top of the left side of the reaction box, the top of the right side of the reaction box is communicated with the top of the left side of the flocculation device through a connecting pipe, the bottom of the right side of the flocculation device is communicated with the top of the left side of the horizontal flow type inclined plate precipitation device through a lifting pump and a connecting pipe, and the top of the right;
two overflow plates of inner chamber fixedly connected with of reaction box, two overflow plates divide into from a left side to the anaerobism pond, oxygen deficiency pond and the good oxygen pond on the right with the inner chamber of reaction box, be provided with first mixer in anaerobism pond and the oxygen deficiency pond, the top fixed mounting in good oxygen pond has the aeration machine, the output of aeration machine has the perforated pipe that is located good oxygen pond bottom through the connecting pipe intercommunication, the inner chamber in anaerobism pond, oxygen deficiency pond and good oxygen pond all is provided with the MBBR and packs, and the inboard anaerobism of growing that the MBBR packed in the good oxygen pond or facultative anaerobism, the aerobic bacteria of outside growth.
According to the integrated sewage treatment equipment based on the A2/O coupling MBBR technology, the anoxic tank and the aerobic tank are communicated through the sewage circulating pump and the connecting pipe, and the sewage circulating pump can pump the sewage in the aerobic tank back to the anoxic tank.
The invention relates to integrated sewage treatment equipment based on the A2/O coupling MBBR technology, which comprises a flocculation device and a second stirrer, wherein the flocculation device comprises a flocculation box, and the second stirrer is fixedly installed on the flocculation box.
According to the integrated sewage treatment equipment based on the A2/O coupling MBBR technology, the dosing mechanism further comprises a dosing tank and a metering pump which are arranged at the top of the flocculation tank, a feeding hole is formed in the top of the dosing tank, and the input end of the metering pump is communicated with the dosing tank while the output end of the metering pump is communicated with the flocculation tank.
The invention relates to integrated sewage treatment equipment based on the A2/O coupling MBBR technology, which comprises a settling tank, wherein a flow guide vertical plate is fixedly installed on the left side of the top of an inner cavity of the settling tank, a gap is reserved between the bottom of the flow guide vertical plate and the bottom wall of the settling tank, a fixing frame fixedly connected with the settling tank is fixedly installed on the right side of the flow guide vertical plate, a plurality of inclined plates are fixedly connected to the inner cavity of the fixing frame at the same interval along the transverse direction, and the bottom of the settling tank is communicated with a sludge outlet pipe.
According to the integrated sewage treatment equipment based on the A2/O coupling MBBR technology, the cross section of the lower part of the settling tank is conical, and the two sides of the bottom of the settling tank are symmetrically and fixedly provided with the supporting legs.
According to the integrated sewage treatment equipment based on the A2/O coupling MBBR technology, a transverse pipe is connected to the bottom end of the sludge outlet pipe, one end of the transverse pipe is communicated with the anaerobic tank through a sludge circulating pump and a connecting pipe, and the other end of the transverse pipe penetrates through the outer side of the shell and is provided with a control valve.
The integrated sewage treatment equipment based on the A2/O coupling MBBR technology further comprises a water guide pipeline, the water guide pipeline is in a continuous bent shape, the communicating pipe is communicated with the top of the water guide pipeline, one end, far away from the communicating pipe, of the water guide pipeline penetrates through the outer side of the shell, UV-C components are uniformly and fixedly installed on the water guide pipeline, and lamp tubes of the UV-C components are located in an inner cavity of the water guide pipeline.
According to the integrated sewage treatment equipment based on the A2/O coupling MBBR technology, a first access hole is formed in the left side of the top of the shell and in a position corresponding to the first stirrer, a second access hole is formed in a position corresponding to the aerator, a feeding hole is formed in a position corresponding to the medicine storage box, and cover plates are arranged on the tops of the first access hole and the feeding hole.
The invention also provides a treatment process of the integrated sewage treatment equipment based on the A2/O coupling MBBR technology, wherein sewage enters the reaction box from the water inlet pipe and sequentially passes through the anaerobic tank, the anoxic tank, the aerobic tank, the flocculation device, the advection type inclined plate precipitation device and the UV disinfection device, the sewage releases phosphorus in the anaerobic tank and is subjected to organic ammoniation, denitrification treatment is performed in the anoxic tank, BOD, nitrification and phosphorus absorption are removed in the aerobic tank, a flocculating agent is added into the flocculation device through the dosing mechanism and is mixed with the sewage, the sewage in the dosing mechanism is pumped into the advection type inclined plate precipitation device through the lifting pump for precipitation separation, sludge precipitation is discharged from the bottom, supernatant enters the UV disinfection device through the communicating pipe for disinfection treatment, and the treated sewage is discharged.
Compared with the prior art, the invention has the beneficial effects that: in the anaerobic tank and the anoxic tank, water flow and a suspension carrier fully flow under the action of the first stirrer, so that a biological membrane is fully contacted with treated pollutants to realize biological decomposition; in the aerobic tank, the collision and shearing action of the suspended MBBR filler in water enables air bubbles generated by an aerator to be finer, and the contact and oxygen transmission efficiency of a biological film and oxygen is increased; in addition, the MBBR filling material in each aerobic tank has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, and aerobic bacteria grow outside, so that each carrier is a micro-reactor, and the nitrification reaction and the denitrification reaction exist at the same time, thereby improving the treatment effect; through the arrangement of the flocculation device and the dosing mechanism, a dosing mechanism is used for adding a flocculating agent into the flocculation device to mix with sewage, a lift pump is used for pumping the sewage in the dosing mechanism into a horizontal flow type inclined plate sedimentation device for separation, and finally, an UV disinfection device is used for carrying out ultraviolet disinfection on the effluent;
the first stirrer and the aerator are convenient to operate and simple to maintain, the aeration system adopts perforated pipes for aeration and is not easy to block, and the filler is not damaged when the first stirrer works, so that the whole stirring and aeration system is easy to maintain and manage; the MBBR filler is a high-quality durable biological filler and has long service life; the aeration system and the water outlet device can ensure that the whole system can be used for a long time without replacement, and the depreciation rate is low;
the invention combines the A2/O process and the MBBR process, more effectively removes pollutants in water, has strong impact load resistance, low sludge yield, stable and standard effluent, high-efficiency denitrification and dephosphorization capability, stable and standard GB first-grade A effluent, and saves operation cost under the condition of ensuring that the water quality reaches the standard.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective cross-sectional view of the present invention;
FIG. 3 is a schematic sectional front view of the structure of the reaction tank of the present invention;
FIG. 4 is a schematic structural view of a flocculation device and a dosing mechanism according to the present invention;
FIG. 5 is a schematic sectional view of the structure of the horizontal inclined plate sedimentation device of the present invention;
FIG. 6 is a schematic perspective view of a UV-C module disinfection apparatus of the present invention;
FIG. 7 is a schematic perspective view of an MBBR filler of the present invention;
FIG. 8 is a schematic diagram showing the COD, TN and TP concentrations of effluent within 10 days according to the embodiment of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-shell, 2-reaction box, 21-overflow plate, 22-anaerobic tank, 23-anoxic tank, 24-aerobic tank, 25-aerator, 26-perforated pipe, 27-first stirrer, 28-MBBR filler, 3-flocculation device, 31-flocculation tank, 32-second stirrer, 4-dosing mechanism, 41-medicine storage box, 42-metering pump, 5-advection type inclined plate precipitation device, 51-precipitation box, 52-diversion vertical plate, 53-fixing frame, 54-inclined plate, 55-mud outlet pipe, 56-supporting leg, 6-UV disinfection device, 61-water conduit, 62-UV-C component, 7-lift pump, 8-sewage circulating pump, 9-sludge circulating pump, 10-communicating pipe, 11-a water inlet pipe, 12-a first access hole, 13-a second access hole and 14-a feed inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: an integrated sewage treatment device based on an A2/O coupling MBBR technology comprises a shell 1, wherein a reaction box 2, a flocculation device 3, a advection type inclined plate precipitation device 5 and a UV disinfection device 6 are sequentially arranged in an inner cavity of the shell 1 from left to right, a dosing mechanism 4 is arranged at the top of the flocculation device 3, a water inlet pipe 11 is communicated with the top of the left side of the reaction box 2, the top of the right side of the reaction box is communicated with the top of the left side of the flocculation device 3 through a connecting pipe, the bottom of the right side of the flocculation device 3 is communicated with the top of the left side of the advection type inclined plate precipitation device 5 through a lifting pump 7 and the connecting pipe, and the top of;
two overflow plates 21 are fixedly connected to the inner cavity of the reaction box 2, the inner cavity of the reaction box 2 is divided into an anaerobic tank 22, an anoxic tank 23 and an aerobic tank 24 by the two overflow plates 21, a first stirrer 27 is arranged in the anaerobic tank 22 and the anoxic tank 23, an aerator 25 is fixedly arranged at the top of the aerobic tank 24, the output end of the aerator 25 is communicated with a perforated pipe 26 positioned at the bottom of the aerobic tank 24 through a connecting pipe, MBBR fillers 28 are arranged in the inner cavities of the anaerobic tank 22, the anoxic tank 23 and the aerobic tank 24, anaerobic bacteria or facultative bacteria and aerobic bacteria grow on the inner side of the MBBR fillers 28 in the aerobic tank 24, aerobic bacteria grow on the outer side of the MBBR fillers 28, and the MBBR fillers 28 are of the size
12mm, 20% filling rate, 500m specific surface area2/m3(ii) a The anoxic tank 23 and the aerobic tank 24 are communicated with each other through a sewage circulating pump 8 and a connecting pipe, the sewage circulating pump 8 can pump the sewage in the aerobic tank 24 back to the anoxic tank 23, and further send nitrate nitrogen in the aerobic tank 24 into the anoxic tank 23, wherein in the anaerobic tank 22 and the anoxic tank 23, water flow and suspension carriers fully flow under the action of a first stirrer 27, so that a biological membrane is fully contacted with treated pollutants to realize biological decomposition; in the aerobic tank 24, the collision and shearing action of the suspended MBBR filler 28 in water enables air bubbles generated by the aerator 25 to be finer, and the contact and oxygen transmission efficiency of a biological film and oxygen is increased; in addition, the MBBR filling material 28 in each aerobic tank 24 has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, and aerobic bacteria grow outside, so that each carrier is a micro-reactor, and the nitrification reaction and the denitrification reaction exist at the same time, thereby further improving the treatment effect;
the flocculation device 3 comprises a flocculation tank 31, a second stirrer 32 is fixedly arranged on the flocculation tank 31, and the second stirrer 32 can stir the sewage in the flocculation tank 31;
the dosing mechanism 4 comprises a medicine storage box 41 and a metering pump 42 which are arranged at the top of the flocculation box 31, a feeding hole is formed in the top of the medicine storage box 41, the input end of the metering pump 42 is communicated with the medicine storage box 41, the output end of the metering pump 42 is communicated with the flocculation box 31, the medicine storage box 41 can store a flocculating agent, and the flocculating agent in the medicine storage box 41 can be added into the flocculation box 31 through the metering pump 42 to be mixed with sewage;
the advection type inclined plate sedimentation device 5 comprises a sedimentation tank 51, wherein a flow guide vertical plate 52 is fixedly installed on the left side of the top of an inner cavity of the sedimentation tank 51, a gap is reserved between the bottom of the flow guide vertical plate 52 and the bottom wall of the sedimentation tank 51, a fixed frame 53 fixedly connected with the sedimentation tank 51 is fixedly installed on the right side of the flow guide vertical plate 52, a plurality of inclined plates 54 are fixedly connected to the inner cavity of the fixed frame 53 along the transverse direction at the same interval, and a sludge outlet pipe 55 is communicated with the bottom of the sedimentation tank 51; the cross section of the lower part of the settling tank 51 is conical, supporting legs 56 are symmetrically and fixedly mounted on two sides of the bottom of the settling tank 51, sewage can be guided through a guide vertical plate 52, the sewage flows downwards and upwards firstly, sludge and water can be separated when the sewage passes through an inclined plate 54, supernatant enters the UV disinfection device 6 through the communicating pipe 10, and the sludge is discharged through a sludge outlet pipe 55; the bottom end of the sludge outlet pipe 55 is connected with a transverse pipe, one end of the transverse pipe is communicated with the anaerobic tank 22 through a sludge circulating pump 9 and a connecting pipe, the other end of the transverse pipe penetrates through the outer side of the shell 1 and is provided with a control valve, the control valve is a double union electric ball valve, the sludge circulating pump 9 is opened by closing the control valve, partial phosphorus-containing sludge in the advection type inclined plate sedimentation device 5 can be guided into the anaerobic tank 22, and the sludge can be discharged outwards by closing the sludge circulating pump 9 and opening the control valve;
the UV disinfection device 6 comprises a water guide pipeline 61, the water guide pipeline 61 is in a continuous bent shape, a communicating pipe 10 is communicated with the top of the water guide pipeline 61, one end, far away from the communicating pipe 10, of the water guide pipeline 61 penetrates to the outer side of the shell 1, UV-C components 62 are uniformly and fixedly installed on the water guide pipeline 61, lamp tubes of the UV-C components 62 are located in an inner cavity of the water guide pipeline 61, the UV-C components 62 can generate strong ultraviolet UV-C component light, and when treated sewage passes through the water guide pipeline 61, the UV-C components 62 irradiate flowing water so as to achieve the purpose of disinfecting outlet water;
in addition, a first access opening 12 is arranged on the left side of the top of the shell 1 and at a position corresponding to the first stirring machine 27, a second access opening 13 is arranged at a position corresponding to the aerator 25, a feed opening 14 is arranged at a position corresponding to the medicine storage box 41, and cover plates are arranged at the top of the first access opening 12 and the top of the feed opening 14, so that a user can conveniently overhaul the first stirring machine 27 and the aerator 25 and add medicine into the medicine storage box 41.
The treatment process of the integrated sewage treatment equipment based on the A2/O coupling MBBR technology comprises the following steps: sewage enters the reaction box 2 from the water inlet pipe 11 and sequentially passes through the anaerobic tank 22, the anoxic tank 23, the aerobic tank 24, the flocculation device 3, the advection type inclined plate sedimentation device 5 and the UV disinfection device 6, the sewage releases phosphorus in the anaerobic tank 22 and is subjected to organic matter ammonification, denitrification treatment is performed in the anoxic tank 23, BOD, nitrification and phosphorus absorption are removed in the aerobic tank 24, a flocculating agent is added into the flocculation device 3 through the dosing mechanism 4 to be mixed with the sewage, the sewage in the dosing mechanism 4 is pumped into the advection type inclined plate sedimentation device 5 through the lifting pump 7 to be subjected to sedimentation separation, sludge sedimentation is discharged from the bottom, supernatant enters the UV disinfection device 6 through the communicating pipe 10 to be subjected to disinfection treatment, and the supernatant is discharged after the disinfection treatment is finished;
wherein the retention time of the sewage in the anaerobic tank 22, the anoxic tank 23 and the aerobic tank 24 is 1.5h, 4h and 10h respectively, and the surface load of the advection type inclined plate sedimentation device 5 is 0.92m3/m2H, treating for 50t every day to obtain effluent COD, TN and TP concentration schematic diagram within 10 days, as shown in figure 8, the effluent quality is stable and below the first grade A standard, the effluent CODcr is less than 50mg/L, BOD5Less than 10mg/L, TN less than 15mg/L, NH3N is less than 5mg/L, TP is less than 0.5mg/L, meanwhile, the treatment effect of nitrogen and phosphorus is improved to more than 85%, and the removal efficiency of COD and BOD is more than 90%.
The integrated sewage treatment equipment based on the A2/O coupling MBBR technology can be applied to the sewage treatment of cities and towns and rural areas, can also be applied to the upgrading and transformation project of urban sewage treatment plants, and even can be applied to the industrial wastewater treatment as part of processes, and the treatment scale of a single set of equipment is 0.6-300 tons/day; the occupied area of each ton of water is small, and the construction cost of each ton of water is about 3600-; the operation cost per ton of water is 0.19-0.40 yuan.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. Integrated sewage treatment device based on A2/O coupling MBBR technique includes shell (1), its characterized in that: the inner cavity of the shell (1) is sequentially provided with a reaction box (2), a flocculation device (3), a advection type inclined plate precipitation device (5) and a UV disinfection device (6) from left to right, the top of the flocculation device (3) is provided with a dosing mechanism (4), the top of the left side of the reaction box (2) is communicated with a water inlet pipe (11), the top of the right side of the reaction box is communicated with the top of the left side of the flocculation device (3) through a connecting pipe, the bottom of the right side of the flocculation device (3) is communicated with the top of the left side of the advection type inclined plate precipitation device (5) through a lifting pump (7) and the connecting pipe, and the top of the right side of the advection type inclined plate precipitation device (;
the inner chamber fixedly connected with of reaction box (2) has two overflow boards (21), and two overflow boards (21) are cut apart into from a left side anaerobic tank (22), oxygen deficiency pond (23) and aerobic tank (24) to the right side with the inner chamber of reaction box (2), be provided with first mixer (27) in anaerobic tank (22) and anaerobic tank (23), the top fixed mounting of aerobic tank (24) has aerator (25), the output of aerator (25) has perforated pipe (26) that are located aerobic tank (24) bottom through the connecting pipe intercommunication, the inner chamber of anaerobic tank (22), oxygen deficiency pond (23) and aerobic tank (24) all is provided with MBBR filler (28), and the inboard growth anaerobium or facultative bacteria, the outside growth aerobic bacteria of MBBR filler (28) in aerobic tank (24).
2. The integrated sewage treatment equipment based on the A2/O coupling MBBR technology of claim 1, wherein: the anoxic tank (23) is communicated with the aerobic tank (24) through a sewage circulating pump (8) and a connecting pipe.
3. The integrated sewage treatment equipment based on the A2/O coupling MBBR technology of claim 2, wherein: the flocculation device (3) comprises a flocculation box (31), and a second stirring machine (32) is fixedly mounted on the flocculation box (31).
4. The integrated sewage treatment equipment based on the A2/O coupling MBBR technology of claim 3, wherein: the dosing mechanism (4) comprises a dosing tank (41) and a metering pump (42) which are arranged at the top of the flocculation tank (31), a feeding hole is formed in the top of the dosing tank (41), and the input end of the metering pump (42) is communicated with the dosing tank (41) and the output end of the metering pump is communicated with the flocculation tank (31).
5. The integrated sewage treatment equipment based on A2/O coupling MBBR technology of claim 4, wherein: advection formula inclined plate sedimentation device (5) are including settling tank (51), the left side fixed mounting at settling tank (51) inner chamber top has water conservancy diversion riser (52), leave the clearance between the bottom of water conservancy diversion riser (52) and the diapire of settling tank (51), the right side fixed mounting of water conservancy diversion riser (52) has fixed frame (53) with settling tank (51) rigid coupling, fixed frame (53) inner chamber is along horizontal with a plurality of hang plates (54) of same interval fixedly connected with, the bottom intercommunication of settling tank (51) has out mud pipe (55).
6. The integrated sewage treatment equipment based on the A2/O coupling MBBR technology of claim 5, wherein: the cross section of the lower part of the settling tank (51) is conical, and supporting legs (56) are symmetrically and fixedly mounted on two sides of the bottom of the settling tank (51).
7. The integrated sewage treatment equipment based on A2/O coupling MBBR technology of claim 6, wherein: the bottom of the mud outlet pipe (55) is connected with a transverse pipe, one end of the transverse pipe is communicated with the anaerobic pool (22) through a sludge circulating pump (9) and a connecting pipe, and the other end of the transverse pipe penetrates through the outer side of the shell (1) and is provided with a control valve.
8. The integrated sewage treatment equipment based on A2/O coupling MBBR technology of claim 7, wherein: UV degassing unit (6) is including leading water piping (61), it describes to lead water piping (61) to be bent in succession, the top intercommunication of communicating pipe (10) and leading water piping (61), the one end that leads water piping (61) to keep away from communicating pipe (10) runs through to the outside of shell (1), even fixed mounting has UV-C subassembly (62) on leading water piping (61), the fluorescent tube of UV-C subassembly (62) is located the inner chamber of leading water piping (61).
9. The integrated sewage treatment equipment based on A2/O coupling MBBR technology of claim 8, wherein: the left side at shell (1) top and the position that corresponds first mixer (27) are equipped with first access hole (12), the position that corresponds aeration machine (25) is equipped with second access hole (13), the position that corresponds explosive box (41) is equipped with charge door (14), the top of first access hole (12) and charge door (14) all is provided with the apron.
10. A treatment process of an integrated sewage treatment plant based on a2/O coupled MBBR technology according to any of claims 1 to 9, characterized in that: sewage enters the reaction box (2) from the water inlet pipe (11), and pass through the anaerobic tank (22) in proper order, oxygen deficiency pond (23), good oxygen pond (24), flocculation device (3), advection formula inclined plate sedimentation device (5) and UV degassing unit (6), sewage releases phosphorus in anaerobic tank (22), and carry out the organic matter ammoniation, carry out denitrogenation in oxygen deficiency pond (23), get rid of BOD in good oxygen pond (24), nitrify and absorb phosphorus, add flocculating agent and sewage mixture in flocculation device (3) through medicine mechanism (4), sewage in medicine mechanism (4) is through elevator pump (7) suction to advection formula inclined plate sedimentation device (5) in to carry out the precipitation separation, sludge sedimentation is discharged from the bottom, the supernatant enters into UV degassing unit (6) through communicating pipe (10) and carries out disinfection treatment, discharge after finishing the treatment.
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