CN115010255A - Enhanced sludge granulation treatment system based on AOA (argon oxygen decarburization) process and debugging method - Google Patents
Enhanced sludge granulation treatment system based on AOA (argon oxygen decarburization) process and debugging method Download PDFInfo
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- 230000002708 enhancing effect Effects 0.000 claims abstract description 6
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- 239000001301 oxygen Substances 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 18
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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
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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
- 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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- 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]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
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- 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
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- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
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Abstract
The embodiment of the application provides a sludge granulation enhancing treatment system based on an AOA (argon oxygen decarburization) process and a debugging method, belonging 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 a sewage inlet system, the secondary sedimentation tank is used for separating mud from water, and is provided with a first return pipeline for returning sludge to the anaerobic tank and a second return pipeline for returning the sludge to the anoxic tank; wherein, be equipped with the equalizing basin between oxygen deficiency pond and two heavy ponds, the water inlet and the oxygen deficiency pond delivery port of equalizing basin link up, and the delivery port and the two heavy pond water inlets of equalizing basin link up, are equipped with aeration unit and third return line in the equalizing basin, and the mud that deposits in the equalizing basin passes through third return line and flows back to the anaerobism pond. The sludge granulation treatment system and the debugging method can realize granulation of activated sludge, improve the sludge floating 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 a sludge granulation enhancing treatment system based on an AOA (argon oxygen decarburization) process and a debugging method.
Background
With the increasing emphasis on ecological environment, the eutrophication of water bodies in rivers and lakes caused by the overproof nitrogen is not ignored, and further the sewage discharge standard becomes more and more strict, and the sewage treatment technology enters a time period of deep nitrogen and phosphorus removal.
The existing AOA double-reflux deep denitrification process utilizes endogenous denitrification to achieve deep denitrification, the effluent of the last section of anoxic tank enters a secondary sedimentation tank, partial sludge in the engineering flows back to the anoxic tank for a long time easily to cause sludge floating, so that activated sludge flocs are loose, the secondary sedimentation tank even generates a sludge leakage phenomenon, and the concentration of suspended matters in the effluent of the secondary sedimentation tank is increased.
Disclosure of Invention
The embodiment of the application provides a treatment system for enhancing sludge granulation based on AOA technology and a debugging method, which can realize activated sludge granulation and improve the sludge floating phenomenon of a secondary sedimentation tank.
In a first aspect, an embodiment of the application provides an enhanced sludge granulation treatment system based on an AOA process, 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 a water inlet direction, a water inlet of the anaerobic tank is connected with a sewage 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 sludge-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 to the anoxic tank; wherein, be equipped with the equalizing basin between oxygen deficiency pond and two heavy ponds, the water inlet and the oxygen deficiency pond delivery port of equalizing basin link up, and the delivery port and the two heavy pond water inlets of equalizing basin link up, are equipped with aeration unit and third return line in the equalizing basin, and aeration unit is used for filling oxygen into the equalizing basin in, and the mud that deposits in the equalizing basin flows back to the anaerobism pond through 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 return 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 line can make the mud in the secondary sedimentation pond can flow back to the anaerobism pond in, guarantees the mud concentration in anaerobism pond, has improved the reaction efficiency of nitrification in the anaerobism pond. More importantly, the regulating reservoir is arranged between the rear end of the anoxic reservoir and the secondary sedimentation reservoir, the regulating reservoir is internally provided with the aeration unit with the aeration function and the third return pipeline with the sedimentation return function, so that the sludge flocs can be increased and gathered by reasonably controlling the second return pipeline of the secondary sedimentation reservoir, the aeration unit in the regulating reservoir and the third return pipeline, the activated sludge can be granulated, the deep denitrification can be further carried out, the aeration energy consumption can be saved, the solid load of the secondary sedimentation reservoir can be reduced, and the operating pressure can be reduced. In addition, the adjusting tank in the scheme is internally provided with a sedimentation backflow function, and when the treated water quantity is increased, the adjusting tank can be used as a part of sedimentation units after the sludge granulation debugging is completed, so that the function of the operation of the over-designed water quantity is realized.
In some embodiments, the aeration unit comprises an air inlet pipeline and an air supply device, the air supply device is provided with an aeration switch, one end of the air inlet pipeline is connected with the air supply device, and the other end of the air inlet pipeline extends into the regulating reservoir.
Among the above-mentioned technical scheme, can be to filling air in the mud in the equalizing basin through the aeration unit, utilize the air inlet pipeline to be connected with air supply equipment, the aeration switch can be connected with the controller electricity to control air supply equipment's switching, then utilize the air inlet pipeline to spray the air in the mud, can increase the air content in the mud, strengthened the clearance between the mud, thereby make partly nitrogen gas in the mud can discharge in advance, avoid appearing the too high phenomenon of nitrogen gas content in the follow-up secondary sedimentation pond.
In some embodiments, the water inlet of the regulating reservoir is located at the bottom of the reservoir, the water outlet of the regulating reservoir is located at the top of the reservoir, and a blocking member is arranged in the regulating reservoir between the water inlet and the water outlet and used for providing a blocking effect for activated sludge in the regulating reservoir so as to promote the activated sludge in the regulating reservoir to fall back.
Among the above-mentioned technical scheme, because the sewage in the oxygen deficiency pond gets into by the bottom of the pool of equalizing basin, then by lower supreme, sewage adopts the mode of overflow to flow in two heavy ponds, consequently is provided with between water inlet and the delivery port in the equalizing basin and blocks, blocks and to block partial mud granule in the equalizing basin and discharge from the delivery port of equalizing basin, does benefit to the sediment of mud in the equalizing basin, promotes activated sludge's miniaturation, then mud flows back to the anaerobism pond through the third return line of equalizing basin in.
Wherein, block and to block facilities such as swash plate, pipe chute that can be the baffle or promote mud to fall back, block and to block the active sludge that can provide to the equalizing basin and block the effect, do benefit to the fall back of active 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 effluent SS value in the secondary sedimentation tank, and the sludge level meter is used for monitoring the sludge layer interface in the secondary sedimentation tank.
Among the above-mentioned technical scheme, through online turbidity appearance and the mud level gauge that sets up in the secondary sedimentation pond, can the mud layer interface of the play water SS value of real-time supervision secondary sedimentation pond and mud to can take corresponding measure according to the change of data, thereby guarantee whole sludge sedimentation processing system's normal operating.
In some embodiments, the number of the aerobic tanks is multiple, the multiple aerobic tanks are sequentially distributed at intervals, and one of the multiple aerobic tanks close to the anaerobic tank is connected with the water outlet of the anaerobic tank; the quantity of oxygen deficiency pond is established to a plurality ofly, and a plurality of oxygen deficiency ponds are interval distribution in proper order, and one that is close to in a plurality of oxygen deficiency ponds links up with the delivery port in good oxygen pond, and the delivery port that is close to one of equalizing basin links up with the water inlet of equalizing basin.
Among the above-mentioned technical scheme, all set up to a plurality ofly through the quantity with good oxygen pond and oxygen deficiency pond, a plurality of good oxygen ponds can mutually support, and good oxygen bacterium is cultivateed in the good oxygen pond, through the microorganism to the COD of handling the sewage, on the other hand also can carry out nitrification, through nitrobacteria's effect with ammonia nitrogen, nitrite nitrogen conversion nitrate nitrogen. Similarly, a plurality of anoxic tanks can be matched with each other, and mainly play a role in removing nitrate nitrogen through denitrification and removing part of BOD in sewage.
In some embodiments, the anoxic tank is provided with a material feeding component for supplementing a carbon source into the anoxic tank when required for acclimatization and operation.
Among the above-mentioned technical scheme, through being provided with the material on the oxygen deficiency pond and input the subassembly, the subassembly is put in to the material can be to the automatic supplementary carbon source in the oxygen deficiency pond, and convenient operation is swift, easily realizes.
In a second aspect, an embodiment of the present application provides a debugging method for an AOA-based process-enhanced sludge granulation treatment system, which is applied to the aforementioned AOA-based process-enhanced sludge granulation treatment system, and the debugging method for the AOA-based process-enhanced sludge granulation treatment system includes the following steps: s1, starting and operating a sludge treatment system, and inoculating sludge; s2, after the sludge treatment system operates stably, periodically acclimating the sludge to be acclimated; wherein, the periodic domestication comprises a domestication period and an adaptation period; s3, domestication period; closing a second return pipeline of the secondary sedimentation tank to enable a mud-water separation interface of the secondary sedimentation tank to rise, increasing the SS value of effluent and discharging muddy water; adding a carbon source into the anoxic tank, keeping the total nitrogen of effluent stable, culturing activated sludge to granulate, closing an aeration unit of the regulating tank, and opening a third return pipeline of the regulating tank; s4, an adaptation period; opening a second return pipeline of the secondary sedimentation tank to lower a mud-water separation interface of the secondary sedimentation tank, reducing the SS value of effluent and discharging clear water; opening an aeration unit of the adjusting tank, and closing a third return pipeline of the adjusting tank; s5, repeating the steps S3 and S4 in sequence, and performing continuous multi-period acclimation on the sludge to obtain acclimated granular sludge.
In some embodiments, each period of acclimatization is set to be one day, the acclimatization period is set to be 8-12 hours in succession in 24 hours, and the rest of the period of acclimatization except the acclimatization period is an acclimatization period or a second acclimatization period in the day.
In the technical scheme, the domestication time of each period is set to be one day, the domestication time in one day is 8-12 hours, and the time of the specific domestication time can be finely adjusted according to the effluent indexes of the secondary sedimentation tank, so that the effluent of the secondary sedimentation tank is favorably met and the COD, ammonia nitrogen, total nitrogen and total phosphorus reach the standard.
In some embodiments, the COD, ammonia nitrogen, total nitrogen and total phosphorus of the effluent of the secondary sedimentation tank are kept up to standards in both the acclimation period and the adaptation period.
In the technical scheme, the average value of SS values of the secondary sedimentation tanks per hour is more than 50mg/L in the acclimation period, and COD, ammonia nitrogen, total nitrogen and total phosphorus of effluent of the other secondary sedimentation tanks all reach the standard, so that the sludge can be subjected to granulation acclimation, and the discharge requirement of sewage can be met.
In some embodiments, SV30 values and SV5 values were recorded for the conditioning pool over multiple periodic acclimations.
Additional features and advantages of the present application will be described in detail 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 required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a system for enhancing sludge granulation based on AOA process according to some embodiments of the present application.
Icon: 1-a water inlet system; 2-AOA biochemical reactor; 3-secondary sedimentation tank; 4-a controller; 5-an anaerobic tank; 6-an aerobic tank; 7-anoxic pond; 8-a medicine adding tank; 9-a dosing pump; 10-a fourth relay; 11-a first return line; 12-a first sludge recirculation 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 recirculation pump; 19-a third relay; 20-gas supply equipment; 21-an air intake line; 22-a regulating reservoir; 23-a barrier; 24-sludge level meter; 25-a water inlet pump; 26-water inlet tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, in the description of the embodiments of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to specific situations.
Examples
The inventor finds that the advanced nitrogen removal technology AOA technology is completed in a secondary biological reaction tank, on the premise of ensuring that the COD of effluent reaches the standard, the AOA technology utilizes an internal carbon source stored in the anaerobic stage of sludge per se to perform denitrification in an anoxic environment, and can realize advanced nitrogen removal without adding an external carbon source by combining short-cut nitrification. The activated sludge zoogloea belongs to a loose structure, the particle size is generally 30-50 mu m, so a secondary sedimentation tank is required to be arranged, the sedimentation separation can be completed generally in the secondary sedimentation tank for more than about 2 hours, and an obvious sludge interface appears. However, because the tail end of the AOA process is an anoxic tank, the effluent of the anoxic tank directly enters the secondary sedimentation tank, so that the floc structure is looser, and the effluent sludge of the secondary sedimentation tank easily floats upwards and flows out.
In view of this, this application provides a processing system based on AOA technology reinforcing sludge granulation, with AOA technology's oxygen deficiency pond end be provided with a equalizing basin in engineering continuous flow, the equalizing basin has functions such as aeration, sediment and backward flow, combines the sludge interface of two heavy ponds, goes out the on-line monitoring of water suspended solid concentration, after debugging and start-up, when can realize AOA technology degree of depth denitrogenation, realize activated sludge granulation, further degree of depth denitrogenation, practice thrift the aeration energy consumption, reduce two heavy ponds solid load, reduce the suspended solid risk that exceeds standard.
Referring to fig. 1, the sludge granulation treatment system comprises an anaerobic tank 5, an aerobic tank 6, an anoxic tank 7 and a secondary sedimentation tank 3 which are sequentially connected along a water inlet direction, wherein a water inlet of the anaerobic tank 5 is connected with a sewage 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 oxygen deficiency pond 7 and two heavy ponds 3, the water inlet of equalizing basin 22 links up with the 7 delivery ports of oxygen deficiency pond, and the delivery port of equalizing basin 22 links up with two heavy pond 3 water inlets, is equipped with aeration unit and third return line 17 in the equalizing basin 22, and aeration unit is used for filling oxygen into the equalizing basin 22, and mud flows back to anaerobism pond 5 through third return line 17 in the equalizing basin 22.
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 make the sludge in the secondary sedimentation tank 3 return to the anaerobic tank 5, so as to ensure the sludge concentration of the anaerobic tank 5 and improve the reaction efficiency of nitrification in the anaerobic tank 5. More importantly, through being provided with equalizing basin 22 between the rear end of oxygen deficiency pond 7 and two heavy ponds 3, aeration unit that has the aeration function and have the third return line 17 that deposits the backward flow function concurrently in the equalizing basin 22, consequently through the reasonable control to aeration unit and third return line 17 in second return line 14 and the equalizing basin 22 of two heavy ponds 3, can realize the increase and the gathering of mud floc, make the miniaturation of activated sludge, further degree of depth denitrogenation, practice thrift the aeration energy consumption, reduce the solid load of two heavy ponds 3, alleviate operating pressure. In addition, the adjusting tank 22 in the scheme is internally provided with a sedimentation backflow function, and when the treated water quantity is increased, the adjusting tank can be used as a part of sedimentation units after the sludge granulation debugging is finished, so that the function of the operation of the over-designed water quantity is realized.
Specifically, when the activated sludge flocs are loose or the secondary sedimentation tank 3 even runs sludge, the sludge is acclimated. Namely, 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 returning to the anoxic tank 7, the sludge in the secondary sedimentation tank 3 can only return to the anaerobic tank 5, the mud-water separation interface of the secondary sedimentation tank 3 rises at the moment, the effluent SS value (suspended substance) is larger than 50mg/L in the acclimatization period, the mean value of the effluent per hour is larger than 50mg/L, and 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 the elimination of the sludge with very low granularity, the height of the sludge level of the secondary sedimentation tank 3 and the concentration of the effluent suspended substance are improved, the forming condition of active sludge granulation is promoted, and sludge granulation is cultured. And through closing the aeration unit of the equalizing basin 22, open the third return line 17 of the equalizing basin 22, have increased "two sink ponds 3" with sedimentation backflow function again in the front end equivalent to in two sink ponds 3, the sludge that enters into the equalizing basin 22 from the anoxic tank 7 can finish the preliminary sedimentation in the equalizing basin 22, cultivate the granulation of activated sludge, the granulated sludge flows back to the anaerobism pond 5 through the third return line 17, and the sludge that the granulation degree is lower can enter into two sink ponds 3 along with the sewage overflow mode from the equalizing basin 22, two sink ponds 3 can go on further sedimentation to the sludge once more, thus deposit a part of sludge of better granulation degree, and a small amount of sludge that the granulation degree is low flows out of two sink ponds 3 with sewage one time finally. After the acclimatization period, the sewage enters a working life, namely 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 the effluent of the secondary sedimentation tank 3 is reduced to be below 15mg/L, namely clear water flows out, meanwhile, the aeration unit of the adjusting tank 22 is started, the third return pipeline 17 of the adjusting tank 22 is closed, air is filled into the adjusting tank 22 through the aeration unit, the sludge-water contact can be strengthened, the gap between sludge is increased, nitrogen in the adjusting tank 22 is released in advance, and a large amount of nitrogen is prevented from entering the secondary sedimentation tank 3, so that the phenomena of high concentration of suspended matters and sludge leakage in the secondary sedimentation tank 3 are improved. And after the adjusting tank 22 is filled with air, the content of oxygen in the sludge is increased, the anaerobic environment of the sludge is avoided, the denitrification effect is reduced, the anaerobic environment can perform denitrification effect, so that nitrogen and other gases are further generated, the suspended matter concentration is high, the sludge leakage phenomenon is caused, 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, through carrying out continuous multicycle domestication to mud for the granule particle diameter of mud crescent, realizes the increase and the gathering of mud floc, thereby realizes the mud miniaturation, and then the mud after the miniaturation is changeed the sediment in two heavy ponds 3, is difficult for appearing the phenomenon that two heavy 3 pond water mud come-up flows out, further degree of depth denitrogenation, practices thrift the aeration energy consumption, reduces the solid load that two heavy ponds 3, reduces the risk that the suspended solid substance exceeds standard.
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 leads 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 discharges water into the secondary sedimentation tank 3 in a mode of a water outlet weir.
In addition, because AOA technology enhanced sludge granulation processing system can also include controller 4, be provided with first sludge recirculation pump 12 on the first return line 11, be provided with second sludge recirculation pump 15 and second relay 16 on the second return line 14, be provided with third sludge recirculation pump 18 and third relay 19 on the third return line 17, second relay 16, third relay 19 and aeration unit all are connected with controller 4 between the electricity, controller 4 can carry out automated control to first return line 11, second return line 14, third return line 17 and aeration unit etc..
The Controller 4 may be a PLC Controller, understandably, a Programmable Logic Controller 4 (PLC), a digital operation Controller with a microprocessor for automatic control, which can load the control instructions into a memory at any time for storage and execution. The programmable controller consists of functional units such as a CPU, an instruction and data memory, an input/output interface, a power supply, a digital-analog converter and the like.
In some embodiments, the aeration unit comprises an air inlet pipe 21 and an air supply device 20, the air supply device 20 is provided with an aeration switch, one end of the air inlet pipe 21 is connected with the air supply device 20, and the other end of the air inlet pipe extends into the regulating tank 22. Can fill air to the mud in the equalizing basin 22 through the aeration unit, utilize air inlet pipe 21 to be connected with air feeder 20, the aeration switch can be connected with controller 4 electricity to control the switching of air feeder 20, then utilize air inlet pipe 21 to spray air in the mud, can increase the air content in the mud, enlarged the clearance between the mud, thereby make partly nitrogen gas in the mud can discharge in advance, avoid appearing the too high phenomenon of nitrogen gas content in follow-up secondary sedimentation pond 3.
The air inlet pipeline 21 may include a vertical section and a horizontal section, the vertical section is connected to the air supply device 20 and extends into the sludge in the adjusting tank 22, the horizontal section extends in the adjusting tank 22 along the horizontal direction, and the horizontal section is provided with a plurality of air outlet holes along the length direction at intervals.
In addition, the number of the air inlet pipelines 21 can be multiple, the aeration unit further comprises a main pipeline, the main pipeline is respectively communicated with the air inlet pipelines 21, and the rest air inlet pipelines 21 can be respectively communicated with any one of the aerobic ponds 6 so as to provide oxygen for the aerobic ponds 6.
In some embodiments, the inlet of the regulating reservoir 22 is located at the bottom of the reservoir, the outlet of the regulating reservoir is located at the top of the reservoir, and a blocking member 23 is disposed in the regulating reservoir 22 between the inlet and the outlet, wherein the blocking member 23 is used for providing a blocking effect to the activated sludge in the regulating reservoir 22 so as to promote the activated sludge in the regulating reservoir 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 in an overflow mode from bottom to top, the blocking piece 23 is arranged between the water inlet and the water outlet in the regulating tank 22, 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, standing and sedimentation of the sludge in the regulating tank 22 are facilitated, granulation of activated sludge is facilitated, and then the sludge flows back to the anaerobic tank 5 through the third return pipeline 17 of the regulating tank 22.
The blocking member 23 may be a blocking device such as a baffle plate or an inclined tube for promoting the return of sludge, and provides a blocking effect for the activated sludge in the regulating reservoir, thereby facilitating the return of the activated sludge in the regulating reservoir. In this embodiment, the blocking member 23 is a baffle, which may be a granulation baffle, a part of the smaller sludge particles entering the regulating reservoir 22 will overflow from the water outlet of the regulating reservoir 22 through the baffle, and most of the sludge particles will promote the sedimentation and backflow of the sewage in the regulating reservoir 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, and the number of the baffles may be multiple, and multiple 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 effluent SS value 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 online 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.
Wherein, online turbidity appearance and mud level gauge 14 all are connected with controller 4 electricity, and controller 4 can be according to online turbidity appearance and the data that mud level gauge 14 surveyed, and then control the second return line 14 of secondary sedimentation tank 3 and to aeration unit and third return line 17 in equalizing basin 22, be convenient for switch acclimatization period and adaptation period.
In some embodiments, the number of the aerobic tanks 6 is multiple, the plurality of aerobic tanks 6 are sequentially distributed at intervals, and one of the plurality of aerobic tanks 6 close to the anaerobic tank 5 is connected with the water outlet of the anaerobic tank 5; the quantity of oxygen deficiency pond 7 is established to a plurality ofly, and a plurality of oxygen deficiency ponds 7 interval distribution in proper order, and one that is close to in a plurality of oxygen deficiency ponds 7 is linked up with the delivery port of good oxygen pond 6, and the delivery port that is close to one of equalizing basin 22 links up with the water inlet of equalizing basin 22. The number through with good oxygen pond 6 and oxygen deficiency pond 7 all sets up to a plurality ofly, and a plurality of good oxygen ponds 6 can mutually support, cultivates good oxygen bacterium in the good oxygen pond 6, through the COD of microorganism to handling sewage, on the other hand also can carry out the nitrification, through the effect of nitrobacterium with ammonia nitrogen, nitrite nitrogen conversion nitrate nitrogen. Similarly, the plurality of anoxic tanks 7 can cooperate with each other to mainly perform the function of denitrifying to remove nitrate nitrogen and simultaneously remove part of BOD in the 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 which can adopt a conventional stirrer in the existing sewage treatment, and the specific structure of the stirrer is not described again.
In some embodiments, the anoxic tank 7 is provided with a material feeding component for supplementing carbon source to the anoxic tank 7 when required for acclimatization and operation. Through being provided with the material on oxygen deficiency pond 7 and input the subassembly, the subassembly is put in to the material can be to the automatic carbon source that supplyes in the oxygen deficiency pond 7, and convenient operation is swift, easily realizes.
Wherein, the subassembly is put in to the material includes with medicine jar 8, dosing pump 9 and fourth relay 10, and fourth relay 10 is connected with controller 4, and dosing jar 8 is used for storing the carbon source, and fourth relay 10 is under controller 4's effect, and the switching of control dosing pump 9 utilizes dosing pump 9 to provide power, can add the carbon source of storage in the dosing jar 8 to the oxygen deficiency pond 7 according to the demand in, for the 7 supplementary carbon sources in oxygen deficiency pond.
In a second aspect, an embodiment of the present application provides a debugging method for an AOA-based process-enhanced sludge granulation treatment system, which is applied to the aforementioned AOA-based process-enhanced sludge granulation treatment system, and the debugging method for the AOA-based process-enhanced sludge granulation treatment system includes the following steps: s1, starting and operating a sludge treatment system, and inoculating sludge; s2, after the sludge treatment system operates stably, periodically acclimating the sludge to be acclimated; wherein, the periodic domestication comprises a domestication period and an adaptation period; s3, domestication period; closing 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 rise, increasing the SS value of the effluent and discharging muddy water; adding a carbon source into the anoxic tank 7, keeping the total nitrogen of the effluent stable, culturing the activated sludge to granulate, closing an aeration unit of the regulating tank 22, and opening a third return pipeline 17 of the regulating tank 22; s4, adaptation period; opening a second return pipeline 14 of the secondary sedimentation tank 3 to lower a mud-water separation interface of the secondary sedimentation tank 3, reducing the SS value of the effluent and discharging clear water; the aeration unit of the adjusting tank 22 is opened, and the third return pipeline 17 of the adjusting tank 22 is closed; s5, repeating the steps S3 and S4 in sequence, and carrying out continuous multi-period acclimation on the sludge to obtain the acclimated granulated sludge.
In the debugging method, when the phenomenon that activated sludge flocs are loose or the secondary sedimentation tank 3 even runs sludge occurs, the sludge is acclimated. In the acclimatization period, the second return pipeline 14 of the secondary sedimentation tank 3 is closed, so that the precipitated sludge in the secondary sedimentation tank 3 can be prevented from continuously returning to the anoxic tank 7, the sludge in the secondary sedimentation tank 3 can only return to the anaerobic tank 5, the mud-water separation interface of the secondary sedimentation tank 3 rises at the moment, the effluent SS value (suspended substance) is larger than 50mg/L in average value per hour in the acclimatization period, muddy water flows out, a part of sludge with smaller granularity in the secondary sedimentation tank 3 is abandoned, which is equivalent to the elimination of sludge with very low granularity, the height of the sedimentation tank sludge position of the secondary sedimentation tank 3 and the concentration of the effluent suspended substance are improved, the formation condition of active sludge granulation is promoted, and sludge granulation is cultured. And through closing the aeration unit of the equalizing basin 22, open the third return line 17 of the equalizing basin 22, have increased "two sink ponds 3" with sedimentation backflow function again in the front end equivalent to in two sink ponds 3, the sludge that enters into the equalizing basin 22 from the anoxic tank 7 can finish the preliminary sedimentation in the equalizing basin 22, cultivate the granulation of activated sludge, the granulated sludge flows back to the anaerobism pond 5 through the third return line 17, and the sludge that the granulation degree is lower can enter into two sink ponds 3 along with the sewage overflow mode from the equalizing basin 22, two sink ponds 3 can go on further sedimentation to the sludge once more, thus deposit a part of sludge of better granulation degree, and a small amount of sludge that the granulation degree is low flows out of two sink ponds 3 with sewage one time finally. After the acclimatization period, the sewage enters a working life, namely 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 the effluent of the secondary sedimentation tank 3 is reduced to be below 15mg/L, namely clear water flows out, meanwhile, the aeration unit of the adjusting tank 22 is started, the third return pipeline 17 of the adjusting tank 22 is closed, air is filled into the adjusting tank 22 through the aeration unit, the sludge-water contact can be strengthened, the gap between sludge is increased, nitrogen in the adjusting tank 22 is released in advance, and a large amount of nitrogen is prevented from entering the secondary sedimentation tank 3, so that the phenomena of high concentration of suspended matters and sludge leakage in the secondary sedimentation tank 3 are improved. And after the adjusting tank 22 is filled with air, the content of oxygen in the sludge is increased, the anaerobic environment of the sludge is avoided, the denitrification effect is reduced, the anaerobic environment can perform denitrification effect, so that nitrogen and other gases are further generated, the suspended matter concentration is high, the sludge leakage phenomenon is caused, 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, through carrying out continuous multicycle domestication to mud for the granule particle diameter of mud crescent, realizes the increase and the gathering of mud floc, thereby realizes the mud miniaturation, and then the mud after the miniaturation is changeed the sediment in two heavy ponds 3, is difficult for appearing the phenomenon that two heavy 3 pond water mud come-up flows out, further degree of depth denitrogenation, practices thrift the aeration energy consumption, reduces the solid load that two heavy ponds 3, reduces the risk that the suspended solid substance exceeds standard. After the activated sludge is granulated, the sludge treatment system normally operates, the concentration of the sludge can be 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 10 mg/L.
In step S1, the activated sludge concentration is maintained at 4000-5000 mg/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 0.5 mg/L.
In some embodiments, the acclimation period is set to 8-12 consecutive hours out of 24 hours, and the remaining time within each period of acclimation excluding the acclimation period is an acclimation period or a second acclimation period within a day.
In the technical scheme, the domestication time of each period is set to be one day, the domestication time in one day is 8-12 hours, and the time of the specific domestication time can be finely adjusted according to the effluent indexes of the secondary sedimentation tank 3, so that the effluent COD, ammonia nitrogen, total nitrogen and total phosphorus of the secondary sedimentation tank 3 reach the standard.
In some embodiments, SV30 values and SV5 values were recorded for conditioning tank 22 over multiple periodic acclimations.
Wherein, the number of the periodic acclimation can be 21-28, namely the acclimation work of the sludge is generally completed within 21d-28 d. After the periodic acclimation for 28d, the SV30 and SV5 values of the regulatory pool 22 for 3d, 7d, 14d, 21d and 28d were recorded, respectively. As shown in table 1:
TABLE 1
Therefore, from the data recorded in the conditioning tank 22, it is found that the particle size of the acclimated sludge gradually increases, the particle size of the sludge increases from 33 μm to 120 μm, sludge flocs grow and aggregate, and finally granulation of the activated sludge is achieved.
In some embodiments, the effluent of the secondary sedimentation tank 3 is maintained at COD, ammonia nitrogen, total nitrogen and total phosphorus levels during both the acclimation period and the adaptation period.
In the technical scheme, the average value of the SS value of the secondary sedimentation tank 3 per hour is more than 50mg/L in the acclimation period, and COD, ammonia nitrogen, total nitrogen and total phosphorus of the effluent of the other secondary sedimentation tanks 3 all reach the standard, so that the sludge can be granulated and acclimated, and the sewage discharge requirement can be met.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The 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 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 separating mud and 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;
the anaerobic tank is characterized in that a regulating tank is arranged between the anoxic tank and the secondary sedimentation tank, a water inlet of the regulating tank is connected with a water outlet of the anoxic tank, a water outlet of the regulating tank is connected with a water inlet of the secondary sedimentation tank, an aeration unit and a third return pipeline are arranged in the regulating tank, the aeration unit is used for filling oxygen into the regulating tank, and sludge precipitated in the regulating tank flows back to the anaerobic tank through the third return pipeline.
2. The AOA-based process enhanced sludge granulation treatment system as claimed in claim 1, wherein said aeration unit comprises an air inlet pipe and an air supply device, said air supply device is provided with an aeration switch, one end of said air inlet pipe is connected with said air supply device, and the other end of said air inlet pipe extends into said regulating reservoir.
3. The AOA-based process enhanced sludge granulation treatment system as claimed in claim 1, wherein the inlet of the conditioning tank is located at the bottom of the tank, the outlet of the tank is located at the top of the tank, and a blocking member is arranged in the conditioning tank between the inlet and the outlet and used for providing 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-based process enhanced sludge granulation treatment system as claimed in claim 1, wherein an online turbidity meter and a sludge level meter are arranged in said secondary sedimentation tank, said online turbidity meter is used for monitoring the effluent SS value in said secondary sedimentation tank, and said sludge level meter is used for monitoring the sludge layer interface in said secondary sedimentation tank.
5. The AOA-based process enhanced sludge granulation treatment system as claimed in claim 1, wherein the number of the aerobic tanks is set to be multiple, a plurality of the aerobic tanks are sequentially distributed at intervals, and one of the plurality of the aerobic tanks close to the anaerobic tank is connected with the water outlet of the anaerobic tank; the number of oxygen deficiency pond is established to a plurality ofly, and is a plurality of the oxygen deficiency pond is interval distribution in proper order, and is a plurality of in the oxygen deficiency pond be close to in the oxygen deficiency pond one of good oxygen pond with the delivery port of good oxygen pond links up, and be close to one of equalizing basin the delivery port with the water inlet of equalizing basin links up.
6. The AOA-based process enhanced sludge granulation treatment system as claimed in claim 1, wherein a material feeding component is provided on the anoxic tank, said material feeding component being used to supplement carbon source into the anoxic tank when required for acclimatization and operation.
7. A debugging method of an AOA process based sludge granulation enhancing treatment system, which is applied to the AOA process based sludge granulation enhancing treatment system in any one of claims 1 to 6, and is characterized by comprising the following steps:
s1, starting and operating a sludge treatment system, and inoculating sludge;
s2, after the sludge treatment system operates stably, periodically acclimating the sludge to be acclimated; wherein the periodic acclimation comprises an acclimation period and an adaptation period;
s3, domestication period; closing the second return pipeline of the secondary sedimentation tank, so that a mud-water separation interface of the secondary sedimentation tank rises, the SS value of effluent is increased, and muddy water flows out; adding a carbon source into the anoxic tank, keeping the total nitrogen of effluent stable, culturing activated sludge to granulate, closing the aeration unit of the regulating tank, and opening the third return pipeline of the regulating tank;
s4, an adaptation period; opening the second return pipeline of the secondary sedimentation tank to lower a mud-water separation interface of the secondary sedimentation tank, reducing the SS value of effluent and outflow clear water; opening the aeration unit of the adjusting tank, and closing the third return pipeline of the adjusting tank;
s5, repeating the steps S3 and S4 in sequence, and performing continuous multi-period acclimation on the sludge to obtain acclimated granular sludge.
8. The method for debugging the AOA process-based sludge granulation-enhanced treatment system according to claim 7, wherein the period of acclimatization is set to one day, the acclimatization period is set to 8-12 consecutive hours out of 24 hours, and the rest of the period of acclimatization except the acclimatization period is the acclimatization period or the second acclimatization period in the day.
9. The method for debugging the AOA process-based sludge granulation-enhanced treatment system according to claim 7, wherein COD, ammonia nitrogen, total nitrogen and total phosphorus in the effluent of the secondary sedimentation tank are kept up to the standard in both the acclimatization period and the adaptation period.
10. The method of commissioning a system for enhanced sludge granulation based on AOA process of claim 7, wherein SV30 values and SV5 values of said conditioning tank are recorded over a plurality of said 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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- 2022-06-29 CN CN202210757713.7A patent/CN115010255B/en active Active
Patent 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116143255A (en) * | 2022-11-11 | 2023-05-23 | 北控水务(中国)投资有限公司 | AOA process sludge sedimentation optimization device and method and sewage treatment system |
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