CN216918772U - High-efficient denitrogenation integrated form treatment facility of meal kitchen waste water - Google Patents
High-efficient denitrogenation integrated form treatment facility of meal kitchen waste water Download PDFInfo
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- CN216918772U CN216918772U CN202123391294.XU CN202123391294U CN216918772U CN 216918772 U CN216918772 U CN 216918772U CN 202123391294 U CN202123391294 U CN 202123391294U CN 216918772 U CN216918772 U CN 216918772U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000010806 kitchen waste Substances 0.000 title description 6
- 235000012054 meals Nutrition 0.000 title description 2
- 238000005273 aeration Methods 0.000 claims abstract description 63
- 239000012528 membrane Substances 0.000 claims abstract description 52
- 239000002351 wastewater Substances 0.000 claims abstract description 23
- 238000005276 aerator Methods 0.000 claims abstract description 22
- 238000011001 backwashing Methods 0.000 claims description 23
- 239000002253 acid Substances 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 9
- 206010021143 Hypoxia Diseases 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 5
- 230000037452 priming Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 30
- 230000008569 process Effects 0.000 abstract description 25
- 239000007788 liquid Substances 0.000 abstract description 17
- 239000010802 sludge Substances 0.000 abstract description 17
- 239000010865 sewage Substances 0.000 abstract description 16
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 7
- 230000001546 nitrifying effect Effects 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 15
- 238000000926 separation method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010992 reflux Methods 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004071 biological effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001850 reproductive effect Effects 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
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- 238000012851 eutrophication Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
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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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- Biological Treatment Of Waste Water (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides integrated treatment equipment for efficient denitrification of kitchen wastewater, which is connected in series by adopting a multi-stage AO (anaerobic-anoxic-oxic) process and comprises a multi-stage AO biochemical treatment system and an MBR (membrane bioreactor) membrane system which are connected through a pipeline, wherein the multi-stage AO biochemical treatment system comprises at least two integrated biochemical devices, the structures of the at least two integrated biochemical devices are consistent and are communicated through an external pipeline, and sewage is subjected to denitrification in an anoxic tank and then enters a subsequent aerobic tank to oxidize ammonia nitrogen. The anaerobic tank is stirred in a jet flow mode, and meanwhile, the inlet water of the jet flow is from the nitrifying liquid at the tail end of the aerobic tank, so that the energy consumption is effectively reduced; the aerobic tank is provided with special fixed bed flat plate filler, the sludge concentration in the aerobic tank is increased, the output of the excess sludge in the treatment process is small, in addition, the aerobic tank adopts jet aeration and micropore aeration to supply oxygen, the jet aerator has long service life, is not easy to damage, has high oxygen mass transfer efficiency, and further improves the treatment efficiency of the equipment.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to efficient denitrification integrated treatment equipment for kitchen wastewater.
Background
With the rapid development of social economy, the living and production levels of human beings are greatly improved, and meanwhile, the problem of environmental pollution is increasingly severe. The waste water produced in the kitchen waste treatment process is complex in quality, has the characteristics of high ammonia nitrogen, high COD, high salinity, high SS and the like, is difficult to treat, and particularly contains nitrogen with higher concentration, and can cause water eutrophication if the kitchen waste water is not subjected to deep treatment and is discharged at will. At present, strict laws and regulations are set for treatment and disposal of kitchen waste and related waste water in many cities in China, the discharge standard is continuously improved, and the kitchen waste and waste water treatment process and system need to be continuously improved and optimized to meet the requirement of high-quality discharge.
MBR is a technology that combines membrane separation technique and traditional biological treatment, adopts membrane separation to replace the secondary sedimentation tank in traditional activated sludge process, compares traditional solid-liquid separation technology, and MBR technology area is little, and it is stable to go out water quality, and the mud concentration in the reaction tank is high moreover, and is stronger to the throughput of pollutant. However, the MBR process also has some problems, such as high investment, high energy consumption, complex operation, etc.
High-efficiency denitrification is always the research direction of kitchen wastewater treatment, MBR is used as a separation unit, a biochemical treatment facility is required to be arranged at the front end, AO (anaerobic-anoxic-oxic) processes are mostly adopted at present, denitrification is performed through biochemical treatment, the denitrification capability of the traditional biochemical treatment process is limited, in order to have a better denitrification effect, a multi-stage AO process is developed, namely, sewage is formed by connecting a plurality of groups of anoxic tanks and aerobic tanks in series, denitrification is performed on the sewage in the anoxic tanks, then the sewage enters a subsequent aerobic tank to oxidize ammonia nitrogen, and mixed nitrified liquid enters a next-stage reactor, so that the operation cost is reduced.
At present, the multistage AO coupling MBR process needs to be perfected, and the process is integrated and assembled, which is the development direction in the future.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide the efficient denitrification integrated treatment equipment for the kitchen wastewater, which has the advantages of less investment, low energy consumption and simple operation.
An efficient denitrification integrated treatment device for kitchen wastewater,
in order to solve the above problems, the present invention provides the following technical solutions:
the integrated treatment equipment for efficient denitrification of the kitchen wastewater comprises a multistage AO biochemical treatment system and an MBR (Membrane Bio-reactor) membrane system which are connected through pipelines, wherein the multistage AO biochemical treatment system comprises at least two integrated biochemical devices, and the at least two integrated biochemical devices have the same structure and are communicated through an external pipeline; the integrated biochemical equipment comprises an aerobic tank I, an aerobic tank II, an aerobic tank III, an anoxic tank and an equipment room I, wherein fixed bed flat plate packing, an aeration system and an air pipe are arranged in the three aerobic tanks and the anoxic tank; the aeration systems in the anoxic tank and the aerobic tank III are communicated with the aerobic tank III through a jet pump in the equipment room I, and the aeration system and the air pipe are respectively communicated with a roots blower in the equipment room I; the integrated MBR equipment comprises an MBR aerobic tank, an MBR membrane tank, a clean water tank and a second equipment room; the tops of the MBR aerobic tank and the MBT membrane tank are communicated through a flange pipe, an aeration system II and an air pipe are arranged in the MBR aerobic tank, and the aeration system II and the air pipe are respectively connected with an aerobic aeration fan through aeration pipelines; the membrane tank is internally provided with an MBR membrane reactor, the MBR membrane reactor is provided with an air inlet flange and a water production flange, the air inlet flange of the MBR membrane reactor is connected with an MBR aeration fan in the second equipment room, and the water production flange of the MBR membrane reactor is communicated with a clean water tank through an MBR water outlet pipe.
Preferably, the multi-stage AO biochemical treatment system comprises an integrated biochemical device, two integrated biochemical devices and three integrated biochemical devices, wherein the three integrated biochemical devices are communicated through an external pipeline.
Preferably, the aeration system comprises jet aerators, the jet aerators in the first aerobic tank and the second aerobic tank are respectively connected with a submersible pump, and the jet aerators in the third aerobic tank and the anoxic tank are respectively communicated with the third aerobic tank through jet pumps in the first equipment room.
Preferably, the aerobic tank is internally provided with a microporous aeration pipe, the anoxic tank is internally provided with a perforated air pipe, and the microporous aeration pipe and the perforated air pipe of the anoxic tank are communicated with a Roots blower in the first integrated equipment room.
Preferably, the second aeration system comprises a jet aerator, the jet aerator is connected with a submersible pump, an air inlet of the jet aerator is communicated with an aeration pipeline, a microporous aeration pipe is arranged in the MBR aerobic tank and is communicated with the aeration pipeline, and the aeration pipeline of the MBR aerobic tank is connected with an aerobic aeration fan.
Preferably, produce water flange and MBR outlet pipe intercommunication, the MBR outlet pipe links to each other with pressure transmitter, motorised valve, production water self priming pump, production water electromagnetism flowmeter in proper order, MBR outlet pipe end and clean water basin intercommunication, the parallelly connected intercommunication of MBR outlet pipe.
Preferably, the MBR outlet pipe is parallelly connected and is communicated with an MBR backwashing device, the MBR backwashing device comprises an MBR backwashing pipe, a backwashing pressure transmitter, a backwashing water pump and an electric valve are installed on the MBR backwashing pipe, and the MBR backwashing pipe is communicated with the clean water tank.
Preferably, a dosing system is further arranged between the second equipment room and comprises a PAC dosing system, an acid washing dosing system and an alkali washing dosing system.
Preferably, the oxygen deficiency pond front end is equipped with inlet tube and mud back flow, electromagnetic flowmeter is installed to the inlet tube, two are equipped with the mud backwash pump between the equipment room, the one end of mud backwash pump with the MBR membrane cisterna is linked together, the other end of mud backwash pump and the mud back flow flange intercommunication of the oxygen deficiency pond front end of first integrated biochemical equipment.
Preferably, the clean water tank is provided with a clean water outlet pipe, and an ultraviolet sterilizer is arranged on the outlet side of the clean water outlet pipe.
Compared with the prior art, the utility model has the following beneficial effects:
1. the multi-stage AO process series connection is adopted, sewage is firstly subjected to denitrification in an anoxic tank, then enters a subsequent aerobic tank to oxidize ammonia nitrogen, and mixed nitrified liquid enters a next-stage reactor, so that the nitrified liquid backflow process can be effectively reduced, the operation cost is reduced, and the method is particularly suitable for treatment of high ammonia nitrogen wastewater. The multistage AO process adopts an intermittent aeration mode to lead microorganisms to grow under the alternate change of anoxic conditions and aerobic conditions, thereby stimulating the biological activity, promoting the short-range nitrification, strengthening the biological denitrification efficiency and greatly improving the treatment efficiency. Meanwhile, the anaerobic environment and the aerobic environment are alternated, so that the growth of a large number of filamentous fungi is limited, and the phenomenon of sludge bulking is rarely caused.
2. The anoxic tank is stirred in a jet flow mode, and meanwhile, the inlet water of the jet flow comes from the nitrifying liquid at the tail end of the aerobic tank, so that the reflux of the nitrifying liquid can be replaced, and the energy consumption is effectively reduced; the special fixed bed flat plate packing is arranged in the aerobic tank, the sludge concentration in the aerobic tank is increased, the output of the residual sludge in the treatment process is small, in addition, the oxygen supply is realized in the form of jet aeration and micropore aeration in the aerobic tank, and compared with the traditional aeration, the jet aerator has the advantages of long service life, difficult damage, high oxygen mass transfer efficiency and further improved treatment efficiency of the equipment.
3. The MBR membrane system is used for replacing a traditional sedimentation tank, the sewage can be subjected to solid-liquid separation by the physical interception capacity of the membrane, most of suspended matters, organic matters and bacteria are separated, the MBR membrane system is used as a sewage advanced treatment part, the effluent quality is stable, the treatment effect is good, the effluent can be directly recycled, the dominant bacteria have strong reproductive capacity in a reactor, the sludge concentration is 5-10 times that of the traditional process, the sludge load is increased, the volume load is larger, and the impact resistance is improved. Due to the functional separation of the membrane unit and the biological reaction unit, the HRT and the SRT of the MBR system can be flexibly controlled and are convenient to manage.
4. The method adopts the form of integrated equipment assembly to process, replaces the traditional civil engineering form, effectively saves land and investment cost, and has small occupied area of integrated equipment, convenient transportation and short implementation period.
Drawings
FIG. 1 is a schematic structural diagram of an integrated treatment device for efficient denitrification of kitchen wastewater, which is provided by the utility model;
FIG. 2 is a flow chart of a first integrated biochemical equipment process structure of the high-efficiency denitrification integrated treatment equipment for kitchen wastewater provided by the utility model;
FIG. 3 is a flow chart of the integrated MBR equipment of the high-efficiency denitrification integrated treatment equipment for kitchen wastewater.
The numbers in the figure are as follows:
100. an integrated biochemical device; 110. an anoxic tank; 120. a first aerobic tank; 130. a second aerobic tank; 140. a third aerobic tank; 150. one device is arranged between the devices; 200. two integrated biochemical devices; 300. three integrated biochemical devices; 400. integrating MBR equipment; 410. an MBR aerobic tank; 420. an MBR membrane tank; 430. a clean water tank; 440. and a second equipment room.
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.
The utility model discloses a high-efficiency denitrification integrated treatment device for kitchen wastewater, which comprises a multi-stage AO biochemical treatment system and an MBR (Membrane Bio-reactor) membrane system, wherein the multi-stage AO biochemical treatment system comprises a first integrated biochemical device 100, a second integrated biochemical device 200 and a third integrated biochemical device 300;
the three integrated biochemical devices have consistent structures and are communicated through external pipelines; the utility model takes an integrated biochemical device 100 as an example, the integrated biochemical device 100 comprises a first aerobic tank 120, a second aerobic tank 130, a third aerobic tank 140, an anoxic tank 110 and a first device room 150, wherein fixed bed flat plate packing 113 and a jet aerator 111 are respectively paved in the three aerobic tanks and the anoxic tank 110; the jet flow aerators 111 in the first aerobic tank 120 and the second aerobic tank 130 are respectively connected with a submersible pump 121, the first aerobic tank 120 is communicated with the second aerobic tank 130 through water holes, and the third aerobic tank 140 and the jet flow aerator 111 in the anoxic tank 110 are respectively communicated with the third aerobic tank 140 through a jet flow pump 152 in a first equipment room 150 and are used for stirring and nitrifying liquid backflow; the jet aerator 111 is communicated with a connecting aeration pipeline, and the aeration pipeline, the microporous aeration pipe 122 and the anoxic tank perforated air pipe 112 are communicated with a Roots blower 151 in a first 150 of the integrated equipment room;
the tail end of an aerobic tank of the first integrated biochemical equipment is communicated with the front end of an anoxic tank of the second integrated biochemical equipment through a pipeline, the tail end of the aerobic tank of the second integrated biochemical equipment is communicated with the front end of an anoxic tank of the third integrated biochemical equipment through a pipeline, and the tail end of the aerobic tank of the third integrated biochemical equipment is communicated with the front end of the aerobic tank of the integrated MBR equipment through a pipeline.
The MBR membrane system is integrated in an integrated MBR equipment 400, the integrated MBR equipment 400 comprises two parts which are communicated through a top flange pipe, the first part of the integrated MBR equipment comprises an MBR aerobic tank 410, and the second part of the integrated MBR equipment comprises an MBR membrane tank 420, a clean water tank 430 and a second equipment room 440;
the MBR aerobic tank 410 is internally provided with a structure which is the same as that of the aerobic tank I and the aerobic tank II in the integrated biochemical equipment structure, comprises another group of jet aerator, the jet aerator is connected with another group of submersible pumps, the air inlet of the jet aerator is communicated with an aeration pipeline, the MBR aerobic tank 410 is also internally provided with another group of microporous aeration pipes which are the same as the aerobic tank I and the aerobic tank II, the microporous aeration pipes are communicated with the aeration pipeline, and the aeration pipeline of the MBR aerobic tank 410 is connected with an aerobic aeration fan 411. Be equipped with MBR membrane reactor 421 in membrane cisterna 420, be equipped with inlet flange and product water flange on the MBR membrane reactor 421, MBR membrane reactor 421's inlet flange links to each other with MBR aeration fan 423 in two 440 between equipment, MBR membrane reactor 421's product water flange and MBR outlet pipe intercommunication, the MBR outlet pipe links to each other with pressure transmitter 427, motorised valve 426, product water self priming pump 424, product water electromagnetic flow meter in proper order, the terminal and clean water basin 430 intercommunication of MBR outlet pipe, the parallelly connected intercommunication of MBR outlet pipe.
And an electric control cabinet is arranged between the devices of the integrated MBR device, and all the electric appliances are connected with the electric control cabinet.
Further, the integrated biochemical equipment comprises three parts which are arranged in parallel, wherein the first part comprises a first aerobic tank 120 and a second aerobic tank 130, the second part comprises a third aerobic tank 140 and a second anoxic tank 110, the third part comprises an equipment room 150, and the bottoms of the first part and the second part are connected through an external flange pipe.
Further, a microporous aeration pipe 122 is arranged in the aerobic tank, a perforated air pipe 112 is arranged in the anoxic tank, and the microporous aeration pipe 122 and the perforated air pipe 112 of the anoxic tank are both communicated with a Roots blower 151 in a first 150 integrated equipment room;
furthermore, the pipes of the oxygen-poor pool perforated air pipe 112 are all provided with electromagnetic valves 114.
Further, an MBR water outlet pipe is connected in parallel to be communicated with an MBR backwashing device, the MBR backwashing device comprises an MBR backwashing pipe, a backwashing pressure transmitter 427, a backwashing water pump 425 and an electric valve 426 are installed on the MBR backwashing pipe, and the MBR backwashing pipe is communicated with the clean water tank 430.
Further, a dosing system is further arranged in the second equipment room 440, and comprises a PAC dosing system 441, an acid washing dosing system 442 and an alkali washing dosing system 443; the PAC medicine adding system comprises a PAC medicine dissolving box, a PAC medicine adding pump and a PAC medicine adding pipeline, and the PAC medicine adding pipeline is communicated with the MBR membrane pool; the acid washing and medicine adding system comprises an acid dissolving medicine box, an acid medicine adding pump and an acid medicine adding pipeline, and the acid medicine adding pipeline is connected with the MBR membrane tank; the alkali washing medicine adding system comprises an alkali dissolving medicine box, an alkali medicine adding pump and an alkali medicine adding pipeline, and the alkali medicine adding pipeline is connected with the MBR membrane tank.
Further, the oxygen deficiency pond 110 front end is equipped with inlet tube and mud back flow, electromagnetic flowmeter is installed to the inlet tube, two 440 between the equipments are equipped with mud backwash pump 422, mud backwash pump 422's one end with MBR membrane cisterna 420 is linked together, mud backwash pump 422's the other end and the mud back flow flange intercommunication of the oxygen deficiency pond front end of first integrated biochemical equipment 100.
Further, the clean water tank 430 is provided with a clean water outlet pipe, and an ultraviolet sterilizer 444 is arranged on the outlet side of the clean water outlet pipe.
The reflux amount of the nitrifying liquid is set to be 100-300%. The sludge reflux amount of the MBR tank is set to be 50-200%.
The utility model also provides a sewage treatment method for high-efficiency denitrification by coupling multistage AO and MBR, which comprises the following steps;
s1, injecting the treated sewage into an anoxic tank through a water inlet pipe of the first integrated biochemical equipment, injecting sludge from the bottom of an MBR membrane tank into the anoxic tank of the first integrated biochemical equipment through a sludge reflux pump, enabling the sewage to sequentially flow through an aerobic tank I, an aerobic tank II and an aerobic tank III of the first integrated biochemical equipment, starting a roots blower, a jet pump and a jet submersible pump, enabling the aerobic tank to realize an aeration effect, and enabling nitrified liquid at the tail end of the aerobic tank to flow back to the anoxic tank under the action of the jet pump, so that the return of the nitrified liquid and the stirring of the anoxic tank are realized;
s2, passing the sewage treated by the first integrated biochemical equipment through a second integrated biochemical equipment and a third integrated biochemical equipment in series for circulation, wherein the second integrated biochemical equipment and the third integrated biochemical equipment are also provided with aeration systems and are consistent with the first equipment;
s3, enabling the sewage treated by the third integrated biochemical equipment to enter integrated MBR equipment, separating sludge from water through a membrane in an MBR membrane tank, enabling clear water obtained by filtering to enter a clear water tank under the action of a MBR water production self-sucking pump, storing a certain amount of water in the clear water tank for backwashing, enabling the water in the clear water tank to flow out through overflow, disinfecting under the action of an ultraviolet disinfector, and then discharging the water out;
and S4, judging whether the MBR membrane reactor needs to be cleaned or not through self-control conditions or on-site conditions, pumping clear water of a clear water tank by using a backwashing pump to clean the MBR membrane reactor by water during washing, preparing acid or alkali agent into solution by using acid or alkali during chemical cleaning, injecting the solution into the membrane tank, and performing soaking, aeration and cleaning processes.
Compared with the prior art, the utility model has the following beneficial effects:
1. the multi-stage AO process series connection is adopted, sewage is firstly subjected to denitrification in an anoxic tank, then enters a subsequent aerobic tank to oxidize ammonia nitrogen, and mixed nitrified liquid enters a next-stage reactor, so that the nitrified liquid backflow process can be effectively reduced, the operation cost is reduced, and the method is particularly suitable for treatment of high ammonia nitrogen wastewater. The multistage AO process adopts an intermittent aeration mode to lead microorganisms to grow under the alternate change of anoxic conditions and aerobic conditions, thereby stimulating the biological activity, promoting the short-range nitrification, strengthening the biological denitrification efficiency and greatly improving the treatment efficiency. Meanwhile, the anaerobic environment and the aerobic environment are alternated, so that the growth of a large number of filamentous fungi is limited, and the phenomenon of sludge bulking is rarely caused.
2. The anoxic tank is stirred in a jet flow mode, and meanwhile, the inlet water of the jet flow comes from the nitrifying liquid at the tail end of the aerobic tank, so that the reflux of the nitrifying liquid can be replaced, and the energy consumption is effectively reduced; the special fixed bed flat plate packing is arranged in the aerobic tank, the sludge concentration in the aerobic tank is increased, the output of the residual sludge in the treatment process is small, in addition, the oxygen supply is realized in the form of jet aeration and micropore aeration in the aerobic tank, and compared with the traditional aeration, the jet aerator has the advantages of long service life, difficult damage, high oxygen mass transfer efficiency and further improved treatment efficiency of the equipment.
3. The MBR membrane system is used for replacing a traditional sedimentation tank, the sewage can be subjected to solid-liquid separation by the physical interception capacity of the membrane, most of suspended matters, organic matters and bacteria are separated, the MBR membrane system is used as a sewage advanced treatment part, the effluent quality is stable, the treatment effect is good, the effluent can be directly recycled, the dominant bacteria have strong reproductive capacity in a reactor, the sludge concentration is 5-10 times that of the traditional process, the sludge load is increased, the volume load is larger, and the impact resistance is improved. Due to the functional separation of the membrane unit and the biological reaction unit, the HRT and the SRT of the MBR system can be flexibly controlled and are convenient to manage.
4. The method adopts the form of integrated equipment assembly to process, replaces the traditional civil engineering form, effectively saves land and investment cost, and has small occupied area of integrated equipment, convenient transportation and short implementation period.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (10)
1. The integrated treatment equipment for efficient denitrification of the kitchen wastewater is characterized by comprising a multistage AO biochemical treatment system and an MBR (membrane bioreactor) membrane system which are connected through pipelines, wherein the multistage AO biochemical treatment system comprises at least two integrated biochemical devices (100), and the at least two integrated biochemical devices have the same structure and are communicated through an external pipeline;
the integrated biochemical equipment (100) comprises a first aerobic tank (120), a second aerobic tank (130), a third aerobic tank (140), an anoxic tank (110) and a first equipment room (150), wherein fixed bed flat plate packing (113), an aeration system and an air pipe are arranged in the three aerobic tanks and the anoxic tank (110); the aeration system in the first aerobic tank (120) is communicated with the aeration system in the second aerobic tank (130) through water passing holes, the aeration system in the anoxic tank (110) and the aeration system in the third aerobic tank (140) are communicated with the third aerobic tank (140) through a jet pump (152) in the first equipment room (150), and the aeration system and the air pipe are respectively communicated with a roots blower (151) in the first equipment room (150);
the integrated MBR equipment (400) comprises an MBR aerobic tank (410), an MBR membrane tank (420), a clean water tank (430) and a second equipment room (440); the tops of the MBR aerobic tank (410) and the MBT membrane tank (420) are communicated through a flange pipe, an aeration system II and an air pipe are arranged in the MBR aerobic tank (410), and the aeration system II and the air pipe are respectively connected with an aerobic aeration fan (411) through aeration pipelines; be equipped with MBR membrane reactor (421) in membrane cisterna (420), be equipped with air intake flange and product water flange on MBR membrane reactor (421), the air intake flange of MBR membrane reactor (421) links to each other with MBR aeration fan (423) in two (440) between equipment, the product water flange of MBR membrane reactor (421) passes through MBR outlet pipe intercommunication clean water basin (430).
2. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: the multi-stage AO biochemical treatment system comprises an integrated biochemical device (100), a two-integrated biochemical device (200) and a three-integrated biochemical device (300), wherein the three integrated biochemical devices are communicated through an external pipeline.
3. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: the aeration system comprises jet aerators (111), the jet aerators (111) in the first aerobic tank (120) and the second aerobic tank (130) are respectively connected with a submersible pump (121), and the jet aerators (111) in the third aerobic tank (140) and the anoxic tank (110) are respectively communicated with the third aerobic tank (140) through a jet pump (152) in the first equipment room (150).
4. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: the aerobic tank is internally provided with a microporous aeration pipe (122), the anoxic tank is internally provided with a perforated air pipe (112), and the microporous aeration pipe (122) and the anoxic tank perforated air pipe (112) are communicated with a Roots blower (151) in the integrated equipment room I (150).
5. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: the second aeration system comprises a jet aerator, the jet aerator is connected with a submersible pump, an air inlet of the jet aerator is communicated with an aeration pipeline, a microporous aeration pipe is arranged in the MBR aerobic tank (410), the microporous aeration pipe is communicated with the aeration pipeline, and the aeration pipeline of the MBR aerobic tank (410) is connected with an aerobic aeration fan (411).
6. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: produce water flange and MBR outlet pipe intercommunication, the MBR outlet pipe links to each other with pressure transmitter (427), motorised valve (426), product water self priming pump (424), product water electromagnetism flowmeter in proper order, MBR outlet pipe end and clean water basin (430) intercommunication, the parallelly connected intercommunication of MBR outlet pipe.
7. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: the MBR water outlet pipe is connected with an MBR backwashing device in parallel, the MBR backwashing device comprises an MBR backwashing pipe, a backwashing pressure transmitter (427), a backwashing water pump (425) and an electric valve (426) are installed on the MBR backwashing pipe, and the MBR backwashing pipe is communicated with the clean water tank (430).
8. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: and the second equipment room (440) is also provided with a dosing system, and the dosing system comprises a PAC dosing system (441), an acid washing dosing system (442) and an alkali washing dosing system (443).
9. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: the oxygen deficiency pond (110) front end is equipped with inlet tube and mud back flow, electromagnetic flowmeter is installed to the inlet tube, two (440) between equipment are equipped with mud backwash pump (422), the one end of mud backwash pump (422) with MBR membrane cisterna (420) are linked together, the other end of mud backwash pump (422) communicates with the mud back flow flange of the oxygen deficiency pond front end of first integrated biochemical equipment (100).
10. The integrated high-efficiency denitrification treatment equipment for kitchen wastewater according to claim 1, characterized in that: the clean water tank (430) is provided with a clean water outlet pipe, and the outlet side of the clean water outlet pipe is provided with an ultraviolet sterilizer (444).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123391294.XU CN216918772U (en) | 2021-12-30 | 2021-12-30 | High-efficient denitrogenation integrated form treatment facility of meal kitchen waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123391294.XU CN216918772U (en) | 2021-12-30 | 2021-12-30 | High-efficient denitrogenation integrated form treatment facility of meal kitchen waste water |
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| Publication Number | Publication Date |
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| CN216918772U true CN216918772U (en) | 2022-07-08 |
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| CN202123391294.XU Expired - Fee Related CN216918772U (en) | 2021-12-30 | 2021-12-30 | High-efficient denitrogenation integrated form treatment facility of meal kitchen waste water |
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| Country | Link |
|---|---|
| CN (1) | CN216918772U (en) |
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2021
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