CN115010255B - AOA (advanced organic framework) -process-based sludge granulation treatment system and debugging method - Google Patents
AOA (advanced organic framework) -process-based sludge granulation treatment system and debugging method Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 209
- 230000003179 granulation Effects 0.000 title claims abstract description 51
- 238000005469 granulation Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000013384 organic framework Substances 0.000 title description 2
- 238000004062 sedimentation Methods 0.000 claims abstract description 143
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 238000005273 aeration Methods 0.000 claims abstract description 43
- 239000010865 sewage Substances 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims description 65
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 46
- 229910052757 nitrogen Inorganic materials 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 19
- 230000003750 conditioning effect Effects 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 13
- 230000006978 adaptation Effects 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 230000001965 increasing effect Effects 0.000 claims description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims description 13
- 239000011574 phosphorus Substances 0.000 claims description 13
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000004061 bleaching Methods 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 description 16
- 239000002245 particle Substances 0.000 description 10
- 230000006870 function Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 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 4
- 238000001556 precipitation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 241001148470 aerobic bacillus Species 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- ODURFHDFZAVGHC-KTKRTIGZSA-N (z)-2-aminooctadec-9-enoic acid Chemical compound CCCCCCCC\C=C/CCCCCCC(N)C(O)=O ODURFHDFZAVGHC-KTKRTIGZSA-N 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
Classifications
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- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- 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
- C02F2303/14—Maintenance of water treatment installations
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Microbiology (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)
Abstract
The embodiment of the application provides an AOA (anaerobic-anoxic-oxic) -process-based sludge granulation enhancement treatment system and a debugging method, and belongs to the technical field of sewage treatment. The sludge granulation treatment system comprises an anaerobic tank, an aerobic tank, an anoxic tank and a secondary sedimentation tank which are sequentially connected along the water inlet direction, wherein a water inlet of the anaerobic tank is connected with the sewage water inlet system, the secondary sedimentation tank is used for separating mud from water, and the secondary sedimentation tank is provided with a first return pipeline for returning sludge to the anaerobic tank and a second return pipeline for returning sludge to the anoxic tank; wherein, be equipped with the equalizing basin between anoxic tank and secondary sedimentation tank, the water inlet of equalizing basin links up with anoxic tank delivery port, and the delivery port of equalizing basin links up with secondary sedimentation tank water inlet, is equipped with aeration unit and third return line in the equalizing basin, and the mud that deposits in the equalizing basin flows back to the anaerobic tank through the third return line. The sludge granulation treatment system and the debugging method can realize granulation of the activated sludge, improve the sludge bleaching phenomenon of the secondary sedimentation tank and further enhance the treatment capacity.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to an AOA (anaerobic-anoxic-oxic) process-based sludge granulation treatment system and a debugging method.
Background
Along with the increasing importance of people on ecological environment, the eutrophication phenomenon of river and lake water bodies caused by the exceeding of nitrogen is not ignored, and further the sewage discharge standard is becoming strict, and the sewage treatment technology has entered into a deep denitrification and dephosphorization time period.
The existing AOA double-reflux deep denitrification process utilizes endogenous denitrification to achieve deep denitrification, finally effluent of the anoxic tank enters the secondary sedimentation tank, part of sludge in the engineering is refluxed to the anoxic tank for a long time to easily cause floating of the sludge, loose activated sludge flocs are caused, even a sludge leakage phenomenon occurs in the secondary sedimentation tank, and then the concentration of effluent suspended matters of the secondary sedimentation tank is increased.
Disclosure of Invention
The embodiment of the application provides an AOA (advanced organic granular) process-based sludge granulation treatment system and a debugging method, which can realize activated sludge granulation and improve the sludge bleaching phenomenon of a secondary sedimentation tank.
In a first aspect, an embodiment of the application provides an AOA process-based sludge granulation enhancement treatment system, which comprises an anaerobic tank, an aerobic tank, an anoxic tank and a secondary sedimentation tank which are sequentially connected along a water inlet direction, wherein a water inlet of the anaerobic tank is connected with a sewage water inlet system, a water outlet of the anaerobic tank is connected with a water inlet of the aerobic tank, a water outlet of the aerobic tank is connected with a water inlet of the anoxic tank, a water outlet of the anoxic tank is connected with a water inlet of the secondary sedimentation tank, the secondary sedimentation tank is used for mud-water separation, and the secondary sedimentation tank is provided with a first return pipeline for returning sludge to the anaerobic tank and a second return pipeline for returning sludge to the anoxic tank; wherein, be equipped with the equalizing basin between anoxic tank and secondary sedimentation tank, the water inlet of equalizing basin links up with anoxic tank delivery port, and the delivery port of equalizing basin links up with secondary sedimentation tank water inlet, is equipped with aeration unit and third return line in the equalizing basin, and aeration unit is used for filling oxygen into the equalizing basin, and the mud that deposits in the equalizing basin flows back to the anaerobic tank through the third return line.
In the scheme, the first return pipeline and the second return pipeline are arranged in the secondary sedimentation tank, so that the sludge in the secondary sedimentation tank can flow back to the anoxic tank through the first return pipeline, the sludge concentration of the anaerobic tank is ensured, and the reaction efficiency of nitrification in the anaerobic tank is improved; and the second return pipeline can enable sludge in the secondary sedimentation tank to flow back to the anaerobic tank, so that the sludge concentration of the anaerobic tank is ensured, and the reaction efficiency of nitrification in the anaerobic tank is improved. More importantly, through being provided with the equalizing basin between the rear end of anoxic tank and the secondary sedimentation tank, have aeration unit and the third return line that has precipitation backward flow function concurrently in the equalizing basin, consequently through the reasonable control to aeration unit and third return line in the second return line of secondary sedimentation tank and the equalizing basin, can realize the increase and the gathering of mud floc for the granulation of activated sludge, further degree of depth denitrogenation, practice thrift the aeration energy consumption, reduce the solid load of secondary sedimentation tank, alleviate operating pressure. In addition, the regulating tank in the scheme is internally provided with a sedimentation reflux function, and when the water treatment quantity is improved, the sludge granulation debugging is completed, and the sludge granulation debugging can be used as a part of sedimentation units to realize the function of super-design water quantity operation.
In some embodiments, the aeration unit includes an air intake line and an air supply device having an aeration switch, one end of the air intake line being connected to the air supply device and the other end extending into the conditioning tank.
According to the technical scheme, air can be filled into the sludge in the regulating tank through the aeration unit, the air inlet pipeline is connected with the air supply equipment, the aeration switch can be electrically connected with the controller, so that the opening and closing of the air supply equipment are controlled, then the air is sprayed into the sludge through the air inlet pipeline, the air content in the sludge can be increased, the gap between the sludge is enlarged, and therefore part of nitrogen in the sludge can be discharged in advance, and the phenomenon of overhigh nitrogen content in the subsequent secondary sedimentation tank is avoided.
In some embodiments, the water inlet of the conditioning tank is positioned at the bottom of the tank, the water outlet is positioned at the top of the tank, and a blocking member is arranged between the water inlet and the water outlet in the conditioning tank and is used for providing a blocking effect for the activated sludge in the conditioning tank so as to promote the activated sludge in the conditioning tank to fall back.
In the technical scheme, because sewage in the anoxic tank enters from the bottom of the regulating tank and then flows into the secondary sedimentation tank from bottom to top in an overflow mode, the blocking piece is arranged between the water inlet and the water outlet in the regulating tank and can block part of sludge particles in the regulating tank from the water outlet of the regulating tank, the sedimentation of sludge in the regulating tank is facilitated, the granulation of activated sludge is facilitated, and then the sludge flows back into the anaerobic tank through the third return pipeline of the regulating tank.
Wherein, the blocking piece can be baffle or promote baffle facilities such as mud whereabouts swash plate, pipe chute, and the blocking piece can provide the blocking effect to the activated sludge in the equalizing basin, does benefit to the whereabouts of activated sludge in the equalizing basin.
In some embodiments, an online turbidity meter and a sludge level meter are arranged in the secondary sedimentation tank, the online turbidity meter is used for monitoring the SS value of effluent in the secondary sedimentation tank, and the sludge level meter is used for monitoring the interface of a sludge layer in the secondary sedimentation tank.
According to the technical scheme, the online turbidity meter and the sludge level meter are arranged in the secondary sedimentation tank, so that the effluent SS value of the secondary sedimentation tank and the sludge layer interface of the sludge can be monitored in real time, corresponding measures can be taken according to the change of data, and the normal operation of the whole sludge sedimentation treatment system is ensured.
In some embodiments, the number of the aerobic tanks is set to be a plurality, the plurality of the aerobic tanks are sequentially distributed at intervals, and one of the plurality of the aerobic tanks, which is close to the anaerobic tank, is connected with the water outlet of the anaerobic tank; the number of the anoxic tanks is set to be multiple, the anoxic tanks are sequentially distributed at intervals, one of the anoxic tanks, which is close to the aerobic tank, is connected with the water outlet of the aerobic tank, and the water outlet, which is close to the regulating tank, is connected with the water inlet of the regulating tank.
According to the technical scheme, the number of the aerobic tanks and the number of the anoxic tanks are multiple, the aerobic tanks can be matched with each other, aerobic bacteria are cultured in the aerobic tanks, COD in the sewage is treated by microorganisms, on the other hand, nitrification can be performed, and ammonia nitrogen and nitrite nitrogen are converted into nitrate nitrogen by the action of nitrifying bacteria. Similarly, the anoxic tanks can be matched with each other to mainly play a role in removing nitrate nitrogen by denitrification and remove part of BOD in sewage.
In some embodiments, a material delivery assembly is arranged on the anoxic tank, and the material delivery assembly is used for supplementing a carbon source into the anoxic tank when domestication and operation are needed.
Among the above-mentioned technical scheme, through being provided with the material on the anoxic tank and throw in the subassembly, the material is thrown in the subassembly and can be to the automatic carbon source that supplements in the anoxic tank, convenient operation is swift, easily realizes.
In a second aspect, an embodiment of the present application provides a method for debugging an AOA-based enhanced sludge granulation system, which is applied to the foregoing AOA-based enhanced sludge granulation system, and the method for debugging the AOA-based enhanced sludge granulation system includes the following steps: s1, starting a sludge treatment system to operate, and inoculating sludge; s2, after the sludge treatment system runs stably, periodically domesticating the sludge to be domesticated; wherein, the period domestication comprises a domestication period and an adaptation period; s3, domestication period; closing a second return pipeline of the secondary sedimentation tank, enabling a mud-water separation interface of the secondary sedimentation tank to rise, increasing an SS value of effluent, and discharging muddy water; adding a carbon source into the anoxic tank, keeping the total nitrogen of the effluent stable, granulating the cultured activated sludge, closing an aeration unit of the regulating tank, and opening a third return pipeline of the regulating tank; s4, an adaptation period; starting a second return pipeline of the secondary sedimentation tank, enabling a mud-water separation interface of the secondary sedimentation tank to descend, reducing an SS value of effluent, and discharging clear water; opening an aeration unit of the regulating tank, and closing a third return pipeline of the regulating tank; s5, sequentially repeating the steps S3 and S4, and carrying out continuous multi-period domestication on the sludge to obtain the domesticated granular sludge.
In some embodiments, the time of each period of acclimation is set to one day, the acclimation period is set to a continuous 8h-12h of 24h, and the rest of the time except for the acclimation period in each period of acclimation is an adaptation period or a second acclimation period in the day.
According to the technical scheme, the domestication time of each period is set to be one day, the domestication period is 8-12 hours in one day, and the specific domestication period can be finely adjusted according to the effluent index of the secondary sedimentation tank, so that the requirements of reaching standards of COD, ammonia nitrogen, total nitrogen and total phosphorus of effluent of the secondary sedimentation tank are met.
In some embodiments, the COD, ammonia nitrogen, total nitrogen and total phosphorus of the effluent of the secondary sedimentation tank are kept up to the standard in both the acclimation period and the adaptation period.
According to the technical scheme, the average value of the SS value of the secondary sedimentation tank per hour in the domestication period is larger than 50mg/L, and the COD, ammonia nitrogen, total nitrogen and total phosphorus of the effluent of the other secondary sedimentation tanks reach the standard, so that the discharge requirement of sewage can be met while the sludge is subjected to granularization and domestication.
In some embodiments, the SV30 values and SV5 values of the conditioning pool are recorded over a plurality of period acclimations.
Additional features and advantages of the application will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an AOA-based enhanced sludge granulation treatment system according to some embodiments of the present application.
Icon: 1-a water inlet system; a 2-AOA biochemical reactor; 3-secondary sedimentation tank; 4-a controller; 5-an anaerobic tank; 6-an aerobic tank; 7-an anoxic tank; 8-a dosing tank; 9-a dosing pump; 10-fourth relay; 11-a first return line; 12-a first sludge reflux pump; 14-a second return line; 15-a second sludge reflux pump; 16-a second relay; 17-a third return line; 18-a third sludge reflux pump; 19-a third relay; 20-air supply equipment; 21-an air inlet pipeline; 22-an adjusting tank; 23-a barrier; 24-a sludge level gauge; 25-a water inlet pump; 26-water inlet tank.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present application, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is conventionally put when the application product is used, which is merely for convenience in describing the present application and simplifying the description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, in the description of embodiments of the application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally formed, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to the specific circumstances.
Examples
The inventor finds that the deep denitrification technology AOA technology is completed in a secondary biological reaction tank, and on the premise of ensuring that the COD of effluent reaches the standard, the AOA technology utilizes an internal carbon source stored by sludge in an anaerobic stage to perform denitrification in an anoxic environment, and can realize deep denitrification without adding an external carbon source by combining short-range nitrification. The activated sludge zoogloea belongs to a loose structure, and the particle size is generally 30-50 mu m, so that a secondary sedimentation tank is needed to be arranged, the sedimentation separation can be completed in the secondary sedimentation tank for more than about 2 hours, and an obvious sludge interface appears. However, as the end of the AOA technology is an anoxic tank, after the effluent of the anoxic tank directly enters the secondary sedimentation tank, the structure of the flocs is looser, and the effluent sludge of the secondary sedimentation tank is easy to float upwards and flow out.
In view of the above, the application provides an AOA process-based sludge granulation treatment system, wherein an adjusting tank is arranged at the tail end of an anoxic tank of the AOA process in engineering continuous flow, the adjusting tank has the functions of aeration, precipitation, backflow and the like, and the on-line monitoring of the sludge interface of a secondary sedimentation tank and the concentration of suspended matters in effluent is combined, after the adjustment and the starting, the advanced denitrification of the AOA process can be realized, meanwhile, the granulation of activated sludge is realized, the further advanced denitrification is realized, the aeration energy consumption is saved, the solid load of the secondary sedimentation tank is reduced, and the risk of exceeding the standard of suspended matters is reduced.
Referring to fig. 1, the sludge granulation treatment system includes an anaerobic tank 5, an aerobic tank 6, an anoxic tank 7 and a secondary sedimentation tank 3 sequentially connected along a water inlet direction, wherein a water inlet of the anaerobic tank 5 is connected with a sewage water inlet system 1, a water outlet of the anaerobic tank 5 is connected with a water inlet of the aerobic tank 6, a water outlet of the aerobic tank 6 is connected with a water inlet of the anoxic tank 7, a water outlet of the anoxic tank 7 is connected with a water inlet of the secondary sedimentation tank 3, the secondary sedimentation tank 3 is used for separating mud and water, and the secondary sedimentation tank 3 is provided with a first return pipeline 11 for returning sludge to the anaerobic tank 5 and a second return pipeline 14 for returning sludge to the anoxic tank 7; wherein, be equipped with equalizing basin 22 between anoxic tank 7 and secondary sedimentation tank 3, the water inlet of equalizing basin 22 links up with anoxic tank 7 delivery port, and the delivery port of equalizing basin 22 links up with secondary sedimentation tank 3 water inlet, is equipped with aeration unit and third return line 17 in the equalizing basin 22, and aeration unit is used for filling oxygen into equalizing basin 22, and mud in the equalizing basin 22 flows back to anaerobic tank 5 through third return line 17.
In the scheme, the first return pipeline 11 and the second return pipeline 14 are arranged in the secondary sedimentation tank 3, so that the sludge in the secondary sedimentation tank 3 can flow back to the anoxic tank 7 through the first return pipeline 11, the sludge concentration of the anaerobic tank 5 is ensured, and the reaction efficiency of nitrification in the anaerobic tank 5 is improved; and the second return pipeline 14 can enable the sludge in the secondary sedimentation tank 3 to flow back to the anaerobic tank 5, so that the sludge concentration of the anaerobic tank 5 is ensured, and the reaction efficiency of nitrification in the anaerobic tank 5 is improved. More importantly, through being provided with equalizing basin 22 between the rear end of anoxic tank 7 and secondary sedimentation tank 3, have aeration unit and the third return line 17 that has precipitation backward flow function concurrently in the equalizing basin 22, consequently through the reasonable control to the second return line 14 of secondary sedimentation tank 3 and aeration unit and third return line 17 in equalizing basin 22, can realize the increase and the gathering of mud floc for the granulation of activated sludge, further degree of depth denitrogenation, practice thrift the aeration energy consumption, reduce the solid load of secondary sedimentation tank 3, alleviate operating pressure. In addition, the regulating tank 22 in the scheme is internally provided with a sedimentation reflux function, and when the treated water quantity is improved, the sludge granulation debugging is finished, and the sludge granulation debugging can be used as a part of sedimentation units to realize the function of super-design water quantity operation.
Specifically, when activated sludge flocs are loose or even sludge running occurs in the secondary sedimentation tank 3, the sludge is acclimatized. The second return pipeline 14 of the secondary sedimentation tank 3 is closed, so that the sludge precipitated in the secondary sedimentation tank 3 can be prevented from continuously flowing back to the anoxic tank 7, the sludge in the secondary sedimentation tank 3 can only flow back to the anaerobic tank 5, at the moment, the sludge-water separation interface of the secondary sedimentation tank 3 is raised, the SS value (suspended matter) of the effluent is greater than 50mg/L in the domestication period, and the muddy water flows out, so that a part of sludge with smaller granularity in the secondary sedimentation tank 3 is discarded, which is equivalent to discarding sludge with very low granularity, the height of the sludge position of the sedimentation tank 3 and the concentration of the effluent suspended matter are improved, the formation condition of activated sludge granulation is promoted, and the sludge granulation is cultivated. The aeration unit of the regulating tank 22 is closed, the third return pipeline 17 of the regulating tank 22 is opened, which is equivalent to adding a 'secondary sedimentation tank 3' with a sedimentation return function at the front end of the secondary sedimentation tank 3, the sludge entering the regulating tank 22 from the anoxic tank 7 can finish preliminary sedimentation in the regulating tank 22, the granulated sludge for culturing the activated sludge flows back to the anaerobic tank 5 through the third return pipeline 17, the sludge with lower granulation degree can enter the secondary sedimentation tank 3 from the regulating tank 22 in a sewage overflow mode, the secondary sedimentation tank 3 can further sediment the sludge again, thereby sedimenting a part of sludge with better granulation degree, and a small amount of sludge with lower granulation degree finally flows out of the secondary sedimentation tank 3 along with the sewage. After the acclimation period, the first return pipeline 11 of the secondary sedimentation tank 3 is opened, the sludge interface in the secondary sedimentation tank 3 is reduced, the SS value of effluent of the secondary sedimentation tank 3 is reduced to below 15mg/L, namely clear water flows out, meanwhile, the aeration unit of the regulating tank 22 is opened, the third return pipeline 17 of the regulating tank 22 is closed, air is filled into the regulating tank 22 through the aeration unit at the moment, so that mud-water contact can be enhanced, the gap between sludge is increased, nitrogen in the regulating tank 22 is released in advance, a large amount of nitrogen is prevented from entering the secondary sedimentation tank 3, and the phenomena of high concentration of suspended matters and mud leakage in the secondary sedimentation tank 3 are improved. And after the air is filled into the regulating tank 22, the oxygen content in the sludge is increased, the anaerobic environment of the sludge is avoided, the denitrification is reduced, and the anaerobic environment can perform the denitrification, so that gases such as nitrogen and the like are further generated, the suspended matter concentration is high, the sludge is removed, the phosphorus release phenomenon is generated in the anaerobic environment, and the phenomenon that the total phosphorus in the effluent is higher is avoided.
Finally, continuous multicycle domestication is carried out on the sludge, so that the particle size of the sludge is gradually increased, the increase and aggregation of sludge flocs are realized, the sludge granulation is realized, the granulated sludge is easier to precipitate in the secondary sedimentation tank 3, the phenomenon that the water-out sludge of the secondary sedimentation tank 3 floats upwards and flows out is difficult to occur, further deep denitrification is carried out, the aeration energy consumption is saved, the solid load of the secondary sedimentation tank 3 is reduced, and the risk of exceeding the standard of suspended matters is reduced.
Wherein, a water inlet tank 26 is arranged between the water inlet system 1 and the anaerobic tank 5, and the water inlet tank 26 introduces the sewage in the water inlet tank 26 into the anaerobic tank 5 through a water inlet pump 25. The anaerobic tank 5, the aerobic tank 6, the anaerobic tank 5 and the regulating tank 22 are all positioned in the AOA biochemical reactor 2, and the regulating tank 22 outputs water to the secondary sedimentation tank 3 in a water outlet weir mode.
In addition, the system for enhancing sludge granulation treatment based on the AOA technology can further comprise a controller 4, a first sludge reflux pump 12 is arranged on the first reflux pipeline 11, a second sludge reflux pump 15 and a second relay 16 are arranged on the second reflux pipeline 14, a third sludge reflux pump 18 and a third relay 19 are arranged on the third reflux pipeline 17, the second relay 16, the third relay 19 and the aeration unit are all electrically connected with the controller 4, and the controller 4 can automatically control the first reflux pipeline 11, the second reflux pipeline 14, the third reflux pipeline 17, the aeration unit and the like.
The controller 4 may be a PLC controller, and it is understood that the programmable logic controller 4 (Programmable Logic Controller, PLC), a digital arithmetic controller for automation control with a microprocessor, may load control instructions into a memory at any time for storage and execution. The programmable controller consists of CPU, instruction and data memory, I/O interface, power source, digital-to-analog converter and other functional units.
In some embodiments, the aeration unit includes an air intake pipe 21 and an air supply device 20, the air supply device 20 having an aeration switch, one end of the air intake pipe 21 being connected to the air supply device 20, and the other end extending into the regulating reservoir 22. The aeration unit can charge air into the sludge in the regulating tank 22, the air inlet pipeline 21 is utilized to be connected with the air supply equipment 20, the aeration switch can be electrically connected with the controller 4, so that the opening and closing of the air supply equipment 20 are controlled, then the air is sprayed into the sludge by utilizing the air inlet pipeline 21, the air content in the sludge can be increased, the gap between the sludge is enlarged, part of nitrogen in the sludge can be discharged in advance, and the phenomenon of overhigh nitrogen content in the subsequent secondary sedimentation tank 3 is avoided.
The air inlet pipeline 21 may include a vertical section connected with the air supply device 20 and extending into the sludge in the regulating tank 22, and a horizontal section extending in the regulating tank 22 in a horizontal direction, the horizontal section being provided with a plurality of air outlet holes spaced apart in a length direction thereof.
In addition, the number of the air inlet pipelines 21 may be plural, the aeration unit further includes a main pipeline, the main pipeline is respectively communicated with the plurality of air inlet pipelines 21, and the rest of the air inlet pipelines 21 may be respectively communicated with any one of the plurality of aerobic tanks 6 so as to supply oxygen into the aerobic tanks 6.
In some embodiments, the water inlet of the conditioning tank 22 is located at the bottom of the tank, the water outlet is located at the top of the tank, a blocking member 23 is provided in the conditioning tank 22 between the water inlet and the water outlet, and the blocking member 23 is used to provide a blocking effect to the activated sludge in the conditioning tank 22 to promote the activated sludge in the conditioning tank 22 to fall back. Because the sewage in the anoxic tank 7 enters from the bottom of the regulating tank 22 and then flows into the secondary sedimentation tank 3 from bottom to top in an overflow manner, the blocking piece 23 is arranged between the water inlet and the water outlet in the regulating tank 22, and the blocking piece 23 can block part of sludge particles in the regulating tank 22 from being discharged from the water outlet of the regulating tank 22, thereby facilitating the standing precipitation of the sludge in the regulating tank 22, promoting the granulation of the activated sludge, and then the sludge flows back into the anaerobic tank 5 through the third return pipeline 17 of the regulating tank 22.
Wherein, the blocking piece 23 can be a baffle plate or a sloping plate, a sloping pipe and other blocking facilities for promoting the falling of the sludge, provides a blocking effect for the activated sludge in the regulating tank, and is beneficial to the falling of the activated sludge in the regulating tank. In this embodiment, the blocking member 23 is a baffle, which may be a granulating baffle, and part of the smaller sludge particles entering the adjusting tank 22 overflows from the water outlet of the adjusting tank 22 through the baffle, so that most of the sludge particles can promote the sedimentation and reflux of sewage in the adjusting tank 22 under the blocking effect of the baffle. In addition, the shape of the baffle may be various, for example, the baffle may be in an inverted V shape, the number of baffles may be plural, and the plural baffles are sequentially distributed in the regulating reservoir 22.
In some embodiments, an online turbidity meter and a sludge level meter 14 are arranged in the secondary sedimentation tank 3, the online turbidity meter is used for monitoring the SS value of effluent in the secondary sedimentation tank 3, and the sludge level meter 14 is used for monitoring the sludge layer interface in the secondary sedimentation tank 3. Through the on-line turbidity meter and the sludge level meter 14 arranged in the secondary sedimentation tank 3, the effluent SS value of the secondary sedimentation tank 3 and the sludge layer interface of the sludge can be monitored in real time, so that corresponding measures can be taken according to the change of data, and the normal operation of the whole sludge sedimentation treatment system is ensured.
The online turbidity meter and the sludge level meter 14 are electrically connected with the controller 4, and the controller 4 can further control the second return pipeline 14 of the secondary sedimentation tank 3 and the aeration unit and the third return pipeline 17 in the regulating tank 22 according to data measured by the online turbidity meter and the sludge level meter 14, so that the domestication period and the adaptation period can be conveniently switched.
In some embodiments, the number of the aerobic tanks 6 is set to be a plurality, the plurality of the aerobic tanks 6 are sequentially and alternately distributed, and one of the plurality of the aerobic tanks 6, which is close to the anaerobic tank 5, is connected with the water outlet of the anaerobic tank 5; the number of the anoxic tanks 7 is set to be multiple, the anoxic tanks 7 are sequentially and alternately distributed, one of the anoxic tanks 7 close to the aerobic tank 6 is connected with the water outlet of the aerobic tank 6, and the water outlet close to the regulating tank 22 is connected with the water inlet of the regulating tank 22. Through setting the quantity of the aerobic tank 6 and the anoxic tank 7 to be a plurality of, a plurality of aerobic tanks 6 can be mutually matched, aerobic bacteria are cultured in the aerobic tank 6, COD in the sewage is treated by microorganisms, on the other hand, nitrification can be performed, and ammonia nitrogen and nitrite nitrogen are converted into nitrate nitrogen through the action of nitrifying bacteria. Similarly, the anoxic tanks 7 can be matched with each other to mainly play a role in removing nitrate nitrogen by denitrification and remove part of BOD in sewage.
Alternatively, the number of the aerobic tanks 6 is set to three, and the number of the anoxic tanks 7 is set to four. The anaerobic tank 5 and the anoxic tank 7 are internally provided with stirring components, the stirring components can adopt a conventional stirrer in the existing sewage treatment, and the specific structure of the stirrer is not repeated here.
In some embodiments, a material throwing component is arranged on the anoxic tank 7, and the material throwing component is used for supplementing a carbon source into the anoxic tank 7 when domestication and operation are needed. Through being provided with the material on anoxic tank 7 and put in the subassembly, the subassembly is put in to the material can be to the automatic carbon source that supplements in the anoxic tank 7, convenient operation is swift, easily realizes.
Wherein, the material is put in the subassembly and is included dosing tank 8, dosing pump 9 and fourth relay 10, and fourth relay 10 is connected with controller 4, and dosing tank 8 is used for storing the carbon source, and fourth relay 10 is under the effect of controller 4, and the switching of control dosing pump 9 utilizes dosing pump 9 to provide power, can add the carbon source of storing in dosing tank 8 to anoxic tank 7 according to the demand in, for anoxic tank 7 supplemental carbon source.
In a second aspect, an embodiment of the present application provides a method for debugging an AOA-based enhanced sludge granulation system, which is applied to the foregoing AOA-based enhanced sludge granulation system, and the method for debugging the AOA-based enhanced sludge granulation system includes the following steps: s1, starting a sludge treatment system to operate, and inoculating sludge; s2, after the sludge treatment system runs stably, periodically domesticating the sludge to be domesticated; wherein, the period domestication comprises a domestication period and an adaptation period; s3, domestication period; closing a second return pipeline 14 of the secondary sedimentation tank 3, enabling a mud-water separation interface of the secondary sedimentation tank 3 to rise, increasing an SS value of effluent, and discharging muddy water; adding a carbon source into the anoxic tank 7, keeping the total nitrogen of the effluent stable, granulating the cultured activated sludge, closing an aeration unit of the regulating tank 22, and opening a third return pipeline 17 of the regulating tank 22; s4, an adaptation period; opening a second return pipeline 14 of the secondary sedimentation tank 3 to enable a mud-water separation interface of the secondary sedimentation tank 3 to descend, reduce the SS value of effluent and enable clear water to flow out; opening the aeration unit of the regulating reservoir 22, and closing the third return line 17 of the regulating reservoir 22; s5, sequentially repeating the steps S3 and S4, and carrying out continuous multi-period domestication on the sludge to obtain the domesticated granular sludge.
In the debugging method, when activated sludge flocs are loose or even sludge is run out of the secondary sedimentation tank 3, the sludge is domesticated. In the domestication period, the second return pipeline 14 of the secondary sedimentation tank 3 is closed, so that the sedimented sludge in the secondary sedimentation tank 3 can be prevented from continuously flowing back to the anoxic tank 7, the sludge in the secondary sedimentation tank 3 can only flow back to the anaerobic tank 5, at the moment, the sludge-water separation interface of the secondary sedimentation tank 3 rises, the SS value (suspended matter) of the effluent is larger than 50mg/L in average value per hour in the domestication period, the muddy water flows out, a part of sludge with smaller granularity in the secondary sedimentation tank 3 is discarded, which is equivalent to discarding sludge with very low granularity, the height of the sedimentation tank mud position of the secondary sedimentation tank 3 and the concentration of the effluent suspended matter are improved, the formation condition of activated sludge granulation is promoted, and the sludge granulation is cultivated. The aeration unit of the regulating tank 22 is closed, the third return pipeline 17 of the regulating tank 22 is opened, which is equivalent to adding a 'secondary sedimentation tank 3' with a sedimentation return function at the front end of the secondary sedimentation tank 3, the sludge entering the regulating tank 22 from the anoxic tank 7 can finish preliminary sedimentation in the regulating tank 22, the granulated sludge for culturing the activated sludge flows back to the anaerobic tank 5 through the third return pipeline 17, the sludge with lower granulation degree can enter the secondary sedimentation tank 3 from the regulating tank 22 in a sewage overflow mode, the secondary sedimentation tank 3 can further sediment the sludge again, thereby sedimenting a part of sludge with better granulation degree, and a small amount of sludge with lower granulation degree finally flows out of the secondary sedimentation tank 3 along with the sewage. After the acclimation period, the first return pipeline 11 of the secondary sedimentation tank 3 is opened, the sludge interface in the secondary sedimentation tank 3 is reduced, the SS value of effluent of the secondary sedimentation tank 3 is reduced to below 15mg/L, namely clear water flows out, meanwhile, the aeration unit of the regulating tank 22 is opened, the third return pipeline 17 of the regulating tank 22 is closed, air is filled into the regulating tank 22 through the aeration unit at the moment, so that mud-water contact can be enhanced, the gap between sludge is increased, nitrogen in the regulating tank 22 is released in advance, a large amount of nitrogen is prevented from entering the secondary sedimentation tank 3, and the phenomena of high concentration of suspended matters and mud leakage in the secondary sedimentation tank 3 are improved. And after the air is filled into the regulating tank 22, the oxygen content in the sludge is increased, the anaerobic environment of the sludge is avoided, the denitrification is reduced, and the anaerobic environment can perform the denitrification, so that gases such as nitrogen and the like are further generated, the suspended matter concentration is high, the sludge is removed, the phosphorus release phenomenon is generated in the anaerobic environment, and the phenomenon that the total phosphorus in the effluent is higher is avoided.
Finally, continuous multicycle domestication is carried out on the sludge, so that the particle size of the sludge is gradually increased, the increase and aggregation of sludge flocs are realized, the sludge granulation is realized, the granulated sludge is easier to precipitate in the secondary sedimentation tank 3, the phenomenon that the water-out sludge of the secondary sedimentation tank 3 floats upwards and flows out is difficult to occur, further deep denitrification is carried out, the aeration energy consumption is saved, the solid load of the secondary sedimentation tank 3 is reduced, and the risk of exceeding the standard of suspended matters is reduced. After the activated sludge is formed into particles, the sludge treatment system operates normally, the concentration of the sludge can reach 4000-5000mg/L, the COD of the effluent is less than 30mg/L, the ammonia nitrogen is less than 1.2mg/L, the total nitrogen is less than 10mg/L, the total phosphorus is less than 0.4mg/L, and the SS is less than 10mg/L.
In the step S1, the concentration of the activated sludge is maintained at 4000-5000mg/L; the COD of the effluent is less than 30mg/L, the ammonia nitrogen is less than 1.5mg/L, the total nitrogen is less than 15mg/L, and the total phosphorus is less than 0.5mg/L.
In some embodiments, the time of each period of acclimation is set to one day, the acclimation period is set to a continuous 8h-12h of 24h, and the rest of the time except for the acclimation period in each period of acclimation is an adaptation period or a second acclimation period in the day.
According to the technical scheme, the domestication time of each period is set to be one day, the domestication period is 8-12 hours in one day, and the specific domestication period can be finely adjusted according to the effluent index of the secondary sedimentation tank 3, so that the requirements of reaching standards of COD, ammonia nitrogen, total nitrogen and total phosphorus of effluent of the secondary sedimentation tank 3 are met.
In some embodiments, the SV30 value and the SV5 value of the conditioning pool 22 are recorded over a plurality of periodic acclimations.
The number of the periodic acclimation can be 21-28, namely, the acclimation work of the sludge is generally completed at 21-28 d. After the period of the domestication 28d, the SV30 and SV5 values of the regulating reservoir 22 of 3d, 7d, 14d, 21d and 28d can be recorded, respectively. As shown in table 1:
TABLE 1
Therefore, as is clear from the data recorded in the conditioning tank 22, the particle size of the sludge after acclimatization gradually increases, the particle size of the sludge increases from the first 33 μm to 120 μm, and the sludge flocs increase and aggregate, and finally, the activated sludge is granulated.
In some embodiments, the COD, ammonia nitrogen, total nitrogen and total phosphorus of the effluent of the secondary sedimentation tank 3 are kept up to the standard in both the acclimation period and the adaptation period.
According to the technical scheme, the average value of the SS value of the secondary sedimentation tank 3 per hour in the domestication period is larger than 50mg/L, and the COD, ammonia nitrogen, total nitrogen and total phosphorus of the effluent of the rest secondary sedimentation tanks 3 reach the standard, so that the discharge requirement of sewage can be met while the sludge is subjected to granularization and domestication.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The AOA technology-based sludge granulation enhancement treatment system is characterized by comprising an anaerobic tank, an aerobic tank, an anoxic tank and a secondary sedimentation tank which are sequentially connected along the water inlet direction, wherein a water inlet of the anaerobic tank is connected with a sewage water inlet system, a water outlet of the anaerobic tank is connected with a water inlet of the aerobic tank, a water outlet of the aerobic tank is connected with a water inlet of the anoxic tank, a water outlet of the anoxic tank is connected with a water inlet of the secondary sedimentation tank, the secondary sedimentation tank is used for mud-water separation, and the secondary sedimentation tank is provided with a first return pipeline for returning sludge to the anaerobic tank and a second return pipeline for returning sludge to the anoxic tank;
wherein, be equipped with the equalizing basin between the anoxic tank with two sedimentation tanks, the water inlet of equalizing basin with the anoxic tank delivery port links up, the delivery port of equalizing basin with two sedimentation tank water inlets link up, be equipped with aeration unit and third return line in the equalizing basin, aeration unit is used for to aerify oxygen in the equalizing basin, the mud that deposits in the equalizing basin is through third return line backward flow extremely the anaerobic tank.
2. The AOA-process-based sludge granulation treatment system according to claim 1, wherein the aeration unit includes an air inlet pipe and an air supply device, the air supply device has an aeration switch, one end of the air inlet pipe is connected to the air supply device, and the other end extends into the regulating reservoir.
3. The AOA-process-based enhanced sludge granulation treatment system of claim 1, wherein the water inlet of the conditioning tank is located at the bottom of the tank, the water outlet is located at the top of the tank, a blocking member is disposed in the conditioning tank between the water inlet and the water outlet, and the blocking member is configured to provide a blocking effect to the activated sludge in the conditioning tank to promote the activated sludge in the conditioning tank to fall back.
4. The AOA process-based sludge granulation treatment system according to claim 1, wherein an online turbidity meter and a sludge level meter are arranged in the secondary sedimentation tank, wherein the online turbidity meter is used for monitoring an effluent SS value in the secondary sedimentation tank, and the sludge level meter is used for monitoring a sludge layer interface in the secondary sedimentation tank.
5. The AOA process-based sludge granulation treatment system according to claim 1, wherein the number of the aerobic tanks is set to be a plurality, the plurality of the aerobic tanks are sequentially distributed at intervals, and one of the plurality of the aerobic tanks, which is close to the anaerobic tank, is connected with a water outlet of the anaerobic tank; the number of the anoxic tanks is set to be multiple, the anoxic tanks are sequentially distributed at intervals, one of the anoxic tanks, which is close to the aerobic tank, is connected with the water outlet of the aerobic tank, and the water outlet, which is close to the regulating tank, is connected with the water inlet of the regulating tank.
6. The AOA process-based sludge granulation treatment system according to claim 1, wherein the anoxic tank is provided with a material throwing component, and the material throwing component is used for supplementing a carbon source into the anoxic tank when domestication and operation are needed.
7. A debugging method of an AOA-based enhanced sludge granulation treatment system, applied to any one of claims 1 to 6, characterized by comprising the following steps:
s1, starting a sludge treatment system to operate, and inoculating sludge;
s2, after the sludge treatment system runs stably, periodically domesticating the sludge to be domesticated; wherein the periodic domestication comprises a domestication period and an adaptation period;
s3, domestication period; closing the second return pipeline of the secondary sedimentation tank, enabling the mud-water separation interface of the secondary sedimentation tank to rise, increasing the SS value of the effluent, and discharging muddy water; adding a carbon source into the anoxic tank, keeping the total nitrogen of the effluent stable, granulating the cultured activated sludge, closing the aeration unit of the regulating tank, and opening the third return pipeline of the regulating tank;
s4, an adaptation period; starting the second return pipeline of the secondary sedimentation tank, enabling a mud-water separation interface of the secondary sedimentation tank to descend, reducing an SS value of effluent, and discharging clear water; opening the aeration unit of the regulating tank, and closing the third return line of the regulating tank;
s5, sequentially repeating the steps S3 and S4, and carrying out continuous multi-period domestication on the sludge to obtain the domesticated granular sludge.
8. The method for debugging an AOA-process-based sludge granulation treatment system according to claim 7, wherein the time of each periodic acclimation is set to one day, the acclimation period is set to 8-12 hours in succession among 24 hours, and the remaining time excluding the acclimation period in each periodic acclimation is the adaptation period or the second acclimation period in the day.
9. The method for debugging an AOA-based enhanced sludge granulation treatment system according to claim 7, wherein COD, ammonia nitrogen, total nitrogen and total phosphorus of effluent from the secondary sedimentation tank are maintained to be up to standard during both the acclimation period and the adaptation period.
10. The method for debugging an AOA-process-based sludge granulation treatment system according to claim 7, wherein the SV30 value and the SV5 value of the conditioning tank are recorded during a plurality of the periodic acclimations.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202038914U (en) * | 2011-04-28 | 2011-11-16 | 中国科学技术大学苏州研究院 | Fast cultivation system of aerobic granular sludge |
| CN106746363A (en) * | 2016-12-14 | 2017-05-31 | 浙江工业大学 | A kind of continuous-flow aerobic granular sludge culture and size controlling method and system |
| CN109133337A (en) * | 2018-10-24 | 2019-01-04 | 华北水利水电大学 | A kind of continuous-flow aerobic granular sludge culture and culture and the acclimation method for preparing reaction unit and aerobic particle mud |
| CN109354163A (en) * | 2018-11-19 | 2019-02-19 | 北京工业大学 | The sludge settling pipe device and its application method of sedimentation time can freely be adjusted |
| CN113443711A (en) * | 2021-07-28 | 2021-09-28 | 北控水务(中国)投资有限公司 | AOA process enhanced sludge sedimentation treatment system and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202038914U (en) * | 2011-04-28 | 2011-11-16 | 中国科学技术大学苏州研究院 | Fast cultivation system of aerobic granular sludge |
| CN106746363A (en) * | 2016-12-14 | 2017-05-31 | 浙江工业大学 | A kind of continuous-flow aerobic granular sludge culture and size controlling method and system |
| CN109133337A (en) * | 2018-10-24 | 2019-01-04 | 华北水利水电大学 | A kind of continuous-flow aerobic granular sludge culture and culture and the acclimation method for preparing reaction unit and aerobic particle mud |
| CN109354163A (en) * | 2018-11-19 | 2019-02-19 | 北京工业大学 | The sludge settling pipe device and its application method of sedimentation time can freely be adjusted |
| CN113443711A (en) * | 2021-07-28 | 2021-09-28 | 北控水务(中国)投资有限公司 | AOA process enhanced sludge sedimentation treatment system and control method |
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