CN112723546A - Biological treatment device for high-sulfate high-ammonia nitrogen content wastewater - Google Patents
Biological treatment device for high-sulfate high-ammonia nitrogen content wastewater Download PDFInfo
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- CN112723546A CN112723546A CN202110128764.9A CN202110128764A CN112723546A CN 112723546 A CN112723546 A CN 112723546A CN 202110128764 A CN202110128764 A CN 202110128764A CN 112723546 A CN112723546 A CN 112723546A
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
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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
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
Abstract
The application discloses biological treatment device of high sulfate high ammonia nitrogen content waste water, biological treatment device includes: the anaerobic decarburization unit is configured to receive the high-sulfate high-ammonia nitrogen wastewater and oxidize organic carbon in the wastewater through a biological anaerobic sulfuric acid reduction process; and the synchronous nitrification and denitrification-membrane bioreactor unit is communicated with the anaerobic decarburization unit and is configured to receive the effluent of the anaerobic decarburization unit, perform synchronous nitrification and denitrification on the effluent to perform denitrification treatment, and perform sludge-water separation on the sewage subjected to denitrification treatment to remove sludge. The biological treatment device makes full use of the characteristics of water quality, can greatly reduce the sludge yield, even realizes zero discharge of sludge, lightens the burden of a sludge treatment unit at the rear end of the active sludge process at the present stage, saves the process floor area, reduces the aeration quantity, slows down or even stops the pollution problem of an anaerobic membrane, and realizes high-efficiency and energy-saving carbon and nitrogen removal.
Description
Technical Field
The application relates to the field of sewage treatment, in particular to a biological treatment device for high-sulfate high-ammonia nitrogen content wastewater.
Background
The traditional sludge activation method realizes the degradation of organic matters by utilizing sludge proliferation, and a large amount of residual sludge containing toxic and harmful substances and high water content is generated in the process, so that the sludge treatment burden is increased, and the environment is directly or indirectly polluted. The process mode of adding a medicament or adding a side flow in the existing sludge reduction technology increases the investment cost, and the sludge reduction technology needs to be further developed. Meanwhile, the aerobic sewage treatment process at the present stage mostly adopts modes of blast aeration, micropore aeration, jet aeration and the like, and has the advantages of large aeration quantity, low oxygen utilization rate, high energy consumption and pending optimization.
Therefore, improvements are required to solve the above problems.
Disclosure of Invention
To the problem that exists among the prior art, the application provides a biological treatment device of high sulphate high ammonia nitrogen content waste water, biological treatment device includes:
the anaerobic decarburization unit is configured to receive the high-sulfate high-ammonia nitrogen wastewater and oxidize organic carbon in the wastewater through a biological anaerobic sulfuric acid reduction process;
and the synchronous nitrification and denitrification-membrane bioreactor unit is communicated with the anaerobic decarburization unit and is configured to receive the effluent of the anaerobic decarburization unit, perform synchronous nitrification and denitrification on the effluent to perform denitrification treatment, and perform sludge-water separation on the sewage subjected to denitrification treatment to remove sludge.
Optionally, the synchronous nitrification-denitrification-membrane bioreactor unit comprises a reaction tank body, and a membrane aeration device and a membrane separation device which are arranged in the reaction tank body;
the membrane aeration device is configured to perform synchronous nitrification and denitrification on the effluent to perform denitrification treatment, and the membrane separation device is configured to perform sludge-water separation on the denitrification treated sewage to remove sludge.
Optionally, the membrane aeration device is a membrane aeration bioreactor and the membrane separation device is a membrane bioreactor.
Optionally, the membrane aeration device comprises a gas compression device, an air inlet pipeline, a first membrane frame, a non-porous hollow fiber membrane and an exhaust pipeline;
the nonporous hollow fiber membrane is arranged in the center of the first membrane frame, one end of the air inlet pipeline is connected with the gas compression device, the other end of the air inlet pipeline is arranged in the first membrane frame for aeration, and the exhaust pipeline is connected with the atmosphere.
Optionally, a gas flow meter and/or a flow rate of the aeration body are/is arranged at the front end of the air inlet pipeline connected with the air compression device.
Optionally, the air intake line is provided with a gas pressure reducing valve.
Optionally, the membrane separation device includes a membrane module, a second membrane frame and a water outlet pump, the second membrane frame supports the membrane module, and the water outlet pump is connected to the membrane module.
Optionally, the synchronous nitrification and denitrification-membrane bioreactor unit further comprises an online monitoring device, wherein the online monitoring device comprises at least one of a DO concentration probe, a pH concentration probe and a nitrogen concentration probe which are arranged below the liquid level of the wastewater in the reaction tank body.
Optionally, the synchronous nitrification-denitrification-membrane bioreactor unit further comprises a depth treatment unit, and the depth treatment unit comprises an advanced oxidation unit and/or a membrane treatment unit.
Optionally, the biological treatment device further comprises:
and the water outlet tank is communicated with the water outlet end of the synchronous nitrification-denitrification-membrane bioreactor unit.
In order to solve the technical problem that exists at present, the application provides a biological treatment device of high sulphate high ammonia nitrogen content waste water, biological treatment device make full use of quality of water characteristics can reduce the mud output by a wide margin, realizes the zero release of mud even, alleviates current stage activated sludge process rear end sludge treatment and handles the unit burden, practices thrift technology area simultaneously, reduces the aeration rate, slows down or stops anaerobic membrane pollution problem even, realizes high-efficient, energy-conserving carbon and nitrogen desorption.
Drawings
The following drawings of the present application are included to provide an understanding of the present application. The drawings illustrate embodiments of the application and their description, serve to explain the principles and apparatus of the application. In the drawings, there is shown in the drawings,
FIG. 1 is a schematic structural diagram of a biological treatment apparatus for high-sulfate high-ammonia nitrogen content wastewater according to an embodiment of the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. It will be apparent, however, to one skilled in the art, that the present application may be practiced without one or more of these specific details. In other instances, well-known features of the art have not been described in order to avoid obscuring the present application.
It is to be understood that the present application is capable of implementation in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.
It will be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application.
Spatial relational terms such as "under," "below," "under," "above," "over," and the like may be used herein for convenience in describing the relationship of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
Embodiments of the invention are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the present application. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the present application should not be limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the present application.
In order to solve the problems, the improved method adopted at present comprises the step of providing a novel membrane aeration membrane bioreactor which comprises a reactor main body, a solid-liquid separation membrane, an aeration membrane, a gas outlet liquid seal device, a water outlet pump, a water outlet device, a gas pressure reducing valve, a high-pressure gas storage tank, a water inlet pump and a water inlet device. Is suitable for removing pollutants efficiently in the field of water treatment and is also suitable for the efficient synthesis of microorganisms taking gas as a matrix. However, the reactor mode is not a complete sewage treatment process and does not solve the problems of large residual sludge amount and sludge-water separation membrane pollution of a water treatment system.
The traditional sludge activation method realizes the degradation of organic matters by utilizing sludge proliferation, not only increases the burden of sludge treatment, but also causes direct or indirect pollution to the environment. In addition, the prior denitrification technology needs to be subjected to nitrification and denitrification processes, two reaction tanks and a reflux system are generally arranged, a sedimentation tank is arranged for sludge-water separation, and the denitrification technology has the defects of large floor area, large aeration quantity of an aerobic tank, high energy consumption and the like.
In order to solve the existing problems, the present application provides a biological treatment device for wastewater with high sulfate and high ammonia nitrogen content, as shown in fig. 1, the biological treatment device comprises an anaerobic decarburization unit 1 and a synchronous nitrification-denitrification-membrane bioreactor unit 2, the synchronous nitrification-denitrification-membrane bioreactor unit 2 comprises a reaction tank body 8, a membrane aeration device 3 and a membrane separation device 4, and the membrane aeration device 3 comprises a gas compression device 5, an air inlet pipeline, a first membrane frame, a non-porous hollow fiber membrane and an exhaust pipeline; the synchronous nitrification and denitrification-membrane bioreactor unit 2 also comprises an online monitoring device 6, and the biological treatment device also comprises a water outlet pool 7.
Specifically, the anaerobic decarburization unit 1 is configured to receive high-sulfate high-ammonia nitrogen wastewater and oxidize organic carbon in the wastewater through a biological anaerobic sulfuric acid reduction process, and simultaneously, sulfate reduces sulfide;
a Synchronous Nitrification and Denitrification (SND) -Membrane Bioreactor (MBR) unit which is communicated with the anaerobic decarburization unit 1 and is configured to receive the effluent of the anaerobic decarburization unit 1, perform synchronous nitrification and denitrification on the effluent to perform denitrification treatment, and perform sludge-water separation on the sewage after denitrification treatment to remove sludge.
Specifically, as shown in fig. 1, wastewater containing high organic matter, ammonia nitrogen and sulfate enters an anaerobic decarburization unit 1, sulfate is used as an electron acceptor, organic carbon in the wastewater is oxidized through a biological anaerobic sulfuric acid reduction process, and SO is simultaneously generated4 2-Is reduced to S2-、HS-、H2S, and the like. Then, sulfide carrying a large amount of electrons and ammonia nitrogen in sewage enter an SND-MBR unit together, an aerobic nitrification process is realized on the surface of an oxygen transfer membrane in a membrane oxygen transfer bubble-free aeration mode, and the generated NO3 -Gradually diffuses to the outer anaerobic area under the action of concentration difference, and interacts with sulfide generated by the anaerobic unit to realize the autotrophic denitrification process. And (3) carrying out a mud-water separation process through an anaerobic membrane bioreactor (AnMBR) arranged in the SND-MBR tank body, and discharging the effluent or discharging the effluent after reaching the standard or entering the advanced treatment process of the next stage.
The anaerobic decarburization unit 1 can adopt a common anaerobic tank, an upflow anaerobic tank (such as UASB, EGSB, IOC and ABR reactors), an SBR reactor and other forms, and can also improve the sludge settling performance by adding fillers, improve the sludge interception effect and prevent the reactor from running sludge.
In the application, the synchronous nitrification-denitrification-membrane bioreactor unit 2 comprises a reaction tank body 8, a membrane aeration device 3 and a membrane separation device 4; the membrane aeration device 3 and the membrane separation device 4 are arranged in the same device, such as the reaction tank body 8, so that the floor area is reduced to the maximum extent, and the backflow process is omitted. Wherein the membrane aeration device 3 is configured to perform synchronous nitrification and denitrification on the effluent to perform denitrification treatment, and the membrane separation device 4 is configured to perform sludge-water separation on the denitrification treated sewage to remove sludge.
According to the method, the characteristics of water quality are fully utilized, the removal of organic matters is realized by enriching the sulfate reducing bacteria by utilizing the high sulfate content of the water body, and a large amount of electrons are transferred by the reduction phenomenon of sulfur in the process, so that the sludge proliferation is reduced, and the sludge reduction and even zero emission are realized. The Membrane Aeration Bioreactor (MABR) is used for realizing the synchronous nitrification and denitrification process, reducing the occupied area, effectively reducing the aeration rate, saving a large amount of energy consumption and omitting a reflux system of the traditional denitrification process.
The biological treatment device aims at industrial wastewater with high sulfate and high ammonia nitrogen content, and not only can reduce the sludge yield, but also can realize a high-efficiency, energy-saving and consumption-reducing biological treatment process flow. The biological treatment device respectively realizes the processes of carbon degradation and nitrogen removal by arranging different tank bodies and taking sulfur as an electron intermediary, in an anaerobic decarburization unit 1 (such as an anaerobic reactor), a large amount of electrons flow to sulfate by utilizing system-enriched sulfuric acid reducing bacteria (SRB), so that the sulfate is reduced into low-valence substances such as sulfide, and only a small amount of electrons flow to a metabolic process in which microorganisms grow and reproduce per se, so that the amount of sludge generated by removing organic matters in the process is greatly reduced compared with that of the sludge generated by removing organic matters by a traditional activated sludge method.
In one embodiment of the present application, the membrane aeration device 3 is a Membrane Aeration Bioreactor (MABR) and the membrane separation device 4 is a Membrane Bioreactor (MBR). In the nitrogen circulation process, the synchronous nitrification and denitrification are realized in the form of a Membrane Aeration Bioreactor (MABR) in the synchronous nitrification and denitrification-membrane bioreactor unit 2, and the Membrane Bioreactor (MBR) in the synchronous nitrification and denitrification-membrane bioreactor unit 2 is used for replacing a sedimentation tank for sludge-water separation, and the process has the following advantages: the nitrification and denitrification processes are realized in one tank body, the floor area is reduced to the maximum extent, and the reflux process is saved; the decarbonization process greatly reduces the sludge yield and even realizes the zero discharge of the sludge.
The MABR has high oxygen utilization rate and small aeration amount, and saves a large amount of energy; microorganisms in the denitrification tank are attached to the surface of the MABR membrane component to grow, suspended sludge flocs hardly exist in the tank body, and the pollution problem of the anaerobic membrane can be greatly reduced or even avoided. The whole process can efficiently and energy-saving realize the removal of carbon and nitrogen, and simultaneously realize the reduction and discharge of sludge and even zero discharge.
The membrane aeration device 3 comprises a gas compression device 5, an air inlet pipeline, a first membrane frame, a non-porous hollow fiber membrane and an exhaust pipeline; the nonporous hollow fiber membrane is arranged in the center of the first membrane frame, one end of the air inlet pipeline is connected with the gas compression device 5, the other end of the air inlet pipeline is arranged in the first membrane frame for aeration, and the exhaust pipeline is connected with the atmosphere and used for exhausting redundant gas.
In particular, the gas compression means 5 is used to provide air for the aeration assembly. The air inlet pipeline is connected with the gas compression device 5, a gas flowmeter is additionally arranged at the front end of the air inlet pipeline and used for measuring the flow of the aeration body, and a gas pressure reducing valve is additionally arranged to prevent the aeration pressure from exceeding the bubble point of the hollow fiber membrane and damaging the membrane component. The membrane aeration device 3 comprises a barometer for monitoring the aeration pressure of the membrane component.
The non-porous hollow fiber membrane can be made of silicon rubber, polyvinylidene fluoride (PVDF), polyether sulfone (PES) and the like, is arranged in the center of the membrane frame, and can also be a flat membrane, a spiral membrane and the like in an aeration mode.
The membrane separation device 4 comprises a membrane module, a second membrane frame and a water outlet pump, wherein the second membrane frame supports the membrane module, and the water outlet pump is connected with the membrane module. The membrane module can adopt the forms of hollow fiber membrane, flat membrane and the like, the second membrane frame is used for supporting the membrane module, and the water outlet pump is connected with the membrane module.
The effluent of the synchronous nitrification-denitrification-membrane bioreactor unit 2 is discharged after reaching standards through a water outlet pump or enters deep treatment, and the deep treatment unit comprises an advanced oxidation unit and/or a membrane treatment unit.
The biological treatment device also comprises a water outlet tank 7, wherein the water outlet tank is communicated with the water outlet end of the synchronous nitrification-denitrification-membrane bioreactor unit and is also communicated with the advanced treatment unit so as to discharge the outlet water of the synchronous nitrification-denitrification-membrane bioreactor unit or discharge the outlet water reaching the standard or enter the advanced treatment unit.
The synchronous nitrification and denitrification-membrane bioreactor unit 2 further comprises an online monitoring device 6, wherein the online monitoring device comprises at least one of a DO concentration probe, a pH concentration probe and a nitrogen concentration probe which are arranged below the liquid level of the wastewater in the reaction tank body 8, and system change is monitored in real time. The nitrogen concentration includes ammonia nitrogen NH4 +Nitrous nitrogen NO2 -And nitro nitrogen NO3 -The concentration of (c).
The operation and effect of the biological treatment device for wastewater with high content of sulfate and ammonia nitrogen are described in detail below with reference to a specific example of the application:
the industrial wastewater subjected to front-end pretreatment (such as a grating and a primary sedimentation tank) enters an anaerobic decarburization unit 1, the reactor adopts a form of adding filler (the filling rate is 50%) in an SBR reactor, the operation form adopts 20 hours of operation, 3 hours of sedimentation and 1 hour of drainage, the main sludge flora in the reactor comprises conventional anaerobic bacteria (acid-producing bacteria, methanogenic bacteria), Sulfate Reducing Bacteria (SRB) and the like, and SS is 10 g/L. The average value of COD concentration of inlet water of the anaerobic reactor is 10000mg/L, the ammonia nitrogen concentration is 1000mg/L, the total nitrogen concentration is 1200mg/L, the sulfate concentration is 4000mg/L, and the COD concentration of outlet water is estimated to be 1000mg/L, the ammonia nitrogen concentration is 1000mg/L, the total nitrogen concentration is 1200mg/L, and the sulfate content is 200mg/L through the reduction process of sulfate. The effluent of the anaerobic reactor enters an SND-MBR treatment unit, the DO concentration of the reactor is kept to be less than 0.5mg/L, the ammonia nitrogen conversion rate in the system nitrification process is more than 95%, partial COD is further removed through aeration, the nitrate nitrogen removal rate in the denitrification process is more than 90%, the denitrification process is carried out by utilizing partial COD, then muddy water is separated by an MBR membrane, partial pollutants are further removed, the average value of the COD concentration is less than 60mg/L, the ammonia nitrogen concentration is less than 20mg/L, the total nitrogen concentration is less than 50mg/L, and the effluent enters a subsequent advanced treatment unit, such as an advanced oxidation unit, a membrane treatment unit and the like, the average value of the COD concentration of the effluent is less than 50mg/L, the ammonia nitrogen concentration is less than 5mg/L, the total nitrogen concentration is less than 15mg/L, and meets.
The application biological treatment device of high sulfate and high ammonia nitrogen content waste water includes two units of anaerobism decarbonization unit and Synchronous Nitrification and Denitrification (SND) -Membrane Bioreactor (MBR), is applicable to the processing of high sulfate and high ammonia nitrogen content industrial waste water such as printing and dyeing wastewater, food waste water, oil refining waste water.
The treatment device combines an anaerobic unit for sulfate reducing bacteria SRB decarburization, membrane aeration biomembrane reactor MABR denitrification and anaerobic MBR reactor to form a complete, high-efficiency and energy-saving system for decarburization and denitrification-sludge reduction. The treatment device can greatly reduce the sludge yield, has high decarbonization and denitrogenation efficiency and good effect, has the advantages of greatly saving energy and reducing consumption compared with the traditional activated sludge process and denitrogenation process, and provides a better treatment device for industrial wastewater with high sulfate content and high ammonia nitrogen content, such as printing and dyeing wastewater, pharmaceutical wastewater, oil refining wastewater and the like.
The application has the advantages that:
(1) the water quality characteristics are fully utilized, namely the removal of organic matters is realized by enriching the sulfate reducing bacteria by utilizing the high sulfate content of the water body, the process of removing the organic matters through microbial metabolism in the traditional activated sludge method is replaced by the process, a large amount of electrons can be transferred through the reduction phenomenon of sulfur, so that the sludge proliferation is reduced, and the sludge reduction discharge and even zero discharge can be realized from the source.
(2) In the denitrification process, a Membrane Aeration Bioreactor (MABR) is adopted to realize the synchronous nitrification and denitrification process, and compared with the traditional denitrification process, the method saves the floor area, a reflux system and the aeration quantity, improves the oxygen utilization rate and realizes the more efficient and energy-saving denitrification.
(3) In the denitrification process, substances such as hydrogen sulfide and sulfur simple substances generated in the previous unit can be utilized, partial carbon source which is not completely consumed in the previous unit can be further utilized, the efficient denitrification effect is ensured under the condition of not adding an external carbon source, and the COD of the system is further removed. Ensuring the removal effect of the carbon and nitrogen in the effluent.
(4) The anaerobic MBR unit is combined with the MABR, most of microorganisms in the tank body are attached to the MABR membrane, suspended floc sludge is basically not generated, membrane pollution of the anaerobic MBR can be effectively inhibited, the water outlet flux of the membrane is ensured, and flushing, shaking and other systems of the anaerobic membrane are not required to be arranged.
Although the example embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the above-described example embodiments are merely illustrative and are not intended to limit the scope of the present application thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed in the appended claims.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another device, or some features may be omitted, or not executed.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the description of exemplary embodiments of the present application, various features of the present application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the application and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present application should not be construed to reflect the intent: this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. The utility model provides a biological treatment device of high sulphate high ammonia nitrogen content waste water which characterized in that, biological treatment device includes:
the anaerobic decarburization unit is configured to receive the high-sulfate high-ammonia nitrogen wastewater and oxidize organic carbon in the wastewater through a biological anaerobic sulfuric acid reduction process;
and the synchronous nitrification and denitrification-membrane bioreactor unit is communicated with the anaerobic decarburization unit and is configured to receive the effluent of the anaerobic decarburization unit, perform synchronous nitrification and denitrification on the effluent to perform denitrification treatment, and perform sludge-water separation on the sewage subjected to denitrification treatment to remove sludge.
2. The biological treatment device according to claim 1, wherein the synchronous nitrification-denitrification-membrane bioreactor unit comprises a reaction tank body, and a membrane aeration device and a membrane separation device which are arranged in the reaction tank body;
the membrane aeration device is configured to perform synchronous nitrification and denitrification on the effluent to perform denitrification treatment, and the membrane separation device is configured to perform sludge-water separation on the denitrification treated sewage to remove sludge.
3. The biological treatment apparatus according to claim 2, wherein the membrane aeration device is a membrane aeration bioreactor and the membrane separation device is a membrane bioreactor.
4. The biological treatment apparatus according to claim 2, wherein the membrane aeration device comprises a gas compression device, an air inlet pipe, a first membrane frame, a non-porous hollow fiber membrane, and an exhaust pipe;
the nonporous hollow fiber membrane is arranged in the center of the first membrane frame, one end of the air inlet pipeline is connected with the gas compression device, the other end of the air inlet pipeline is arranged in the first membrane frame for aeration, and the exhaust pipeline is connected with the atmosphere.
5. The biological treatment device according to claim 4, wherein the front end of the air inlet pipeline connected with the air compression device is provided with a gas flow meter and/or a flow rate of a metering aeration body.
6. The biological treatment apparatus according to claim 4, wherein the air intake line is provided with a gas pressure reducing valve.
7. The biological treatment device of claim 2, wherein the membrane separation device comprises a membrane module, a second membrane frame and a water outlet pump, the second membrane frame supports the membrane module, and the water outlet pump is connected with the membrane module.
8. The biological treatment apparatus of claim 2, wherein the synchronous nitrification-denitrification-membrane bioreactor unit comprises an on-line monitoring device comprising at least one of a DO concentration probe, a pH concentration probe, and a nitrogen concentration probe disposed below a wastewater level within the reaction tank body.
9. The biological treatment apparatus according to claim 2, wherein the synchronous nitrification-denitrification-membrane bioreactor unit further comprises a depth treatment unit comprising an advanced oxidation unit and/or a membrane treatment unit.
10. The biological processing device of claim 1, further comprising:
and the water outlet tank is communicated with the water outlet end of the synchronous nitrification-denitrification-membrane bioreactor unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115259376A (en) * | 2022-08-08 | 2022-11-01 | 浙江大学 | Biological autotrophic nitrogen removal device under charging and discharging of sulfur battery and sewage treatment method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115140839A (en) * | 2021-08-16 | 2022-10-04 | 上海蓝景膜技术工程有限公司 | Addition type UASB expansion device and application thereof |
| CN115259376A (en) * | 2022-08-08 | 2022-11-01 | 浙江大学 | Biological autotrophic nitrogen removal device under charging and discharging of sulfur battery and sewage treatment method thereof |
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