Beer wastewater treatment system
Technical Field
The application relates to the technical field of sewage treatment, in particular to a beer wastewater treatment system.
Background
At present, the beer wastewater treatment in China mainly adopts a biological treatment method, an activated sludge method, a biofilm method, an anaerobic method, an aerobic method, an anaerobic-aerobic combined method and other methods, wherein the anaerobic biological treatment method has the characteristics of high removal rate, less residual sludge generation, low operation cost, clean energy (methane) generation and the like. The anaerobic biological treatment method is feasible aiming at the properties of higher COD value (chemical oxygen Demand) and strong biodegradability of the beer wastewater. The anaerobic biological treatment reactor can generate granular sludge relatively easily, but the sludge concentration and volume load of the anaerobic biological treatment reactor for wastewater treatment can not be ensured, and the reaction time is long, so that the treatment efficiency is not high.
Disclosure of Invention
The application provides a beer wastewater treatment system aiming at the defects of the prior art, and is used for solving the problems of long wastewater treatment reaction time and low efficiency in the prior art.
The application provides a beer wastewater treatment system, includes:
the circulation biological reaction subsystem comprises a biological reaction tank, a circulation clarifier and an aeration device, wherein the circulation clarifier is arranged at the top of the biological reaction tank, and the aeration device is arranged in the biological reaction tank and is positioned below the circulation clarifier;
the anaerobic granular sludge reactor is connected with the biological reaction tank through a pipeline so as to convey the effluent of the anaerobic granular sludge reactor to the biological reaction tank.
Optionally, the aeration device includes an anoxic aerator and an aerobic aerator, and the anoxic aerator is disposed below the aerobic aerator.
Optionally, in the biological reaction tank, the circulation clarifier, the aerobic zone and the anoxic zone are sequentially arranged from top to bottom; the aerobic aerator is located in the aerobic zone and the anoxic aerator is located in the anoxic zone.
Optionally, the beer wastewater treatment system still includes the equalizing basin, be provided with grid and sewage elevator pump in the equalizing basin, be used for flowing through the sewage of grid passes through sewage elevator pump delivers to anaerobic granular sludge reactor.
Optionally, the beer wastewater treatment system further comprises a biogas collection and utilization device, and the biogas collection and utilization device is connected with the anaerobic granular sludge reactor through a pipeline so as to guide the gas in the anaerobic granular sludge reactor out to the biogas collection and utilization device.
Optionally, the beer wastewater treatment system further comprises a depth treatment unit, wherein the depth treatment unit is connected with the overflow tank of the loop clarifier through a pipeline, and is used for conveying the effluent of the loop clarifier to the depth treatment unit.
Optionally, the beer wastewater treatment system further comprises a metering tank, and the metering tank is connected with the water outlet of the advanced treatment unit through a pipeline.
Optionally, the bottom of the biological reaction tank and the bottom of the anaerobic granular sludge reactor are both provided with sludge discharge ports.
Optionally, the beer wastewater treatment system still includes sludge treatment unit, sludge treatment unit includes mud holding reservoir and sludge dewatering device, the mud holding reservoir with the mud discharging port passes through the pipe connection, in order to incite somebody to action the mud of biological reaction pond and anaerobism granule sludge reactor bottom discharges extremely the mud holding reservoir, sludge dewatering device sets up the mud holding reservoir top.
Optionally, the sludge treatment unit further comprises a sludge conveyor and a sludge storage bin, wherein one end of the sludge conveyor is arranged at the discharge port of the sludge dewatering device, and the other end of the sludge conveyor is arranged above the sludge storage bin.
Compared with the prior art, the beneficial technical effects of the application include:
the circulation clarifier is arranged in the biological reaction tank, the aeration device is arranged below the circulation clarifier, so that the space from the horizontal plane of the aeration device to the water surface at the top of the biological reaction tank forms an aerobic reaction zone, and the space from the horizontal plane of the aeration device to the bottom of the biological reaction tank forms an anoxic reaction zone, so that the circulation biological reaction subsystem integrates anoxic biochemical reaction, aerobic biochemical reaction and sedimentation, and the floor area is effectively reduced. By combining the circulation biological reaction subsystem with the anaerobic granular sludge reactor, the sludge concentration and the volume load of the beer wastewater treatment system can be greatly improved, the reaction time is shortened, and the wastewater treatment standard can be efficiently and stably achieved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a beer wastewater treatment system provided in an embodiment of the present application;
FIG. 2 is a schematic view of a beer wastewater treatment system according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a water distribution subsystem of the beer wastewater treatment system according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a loop biological reaction subsystem of a beer wastewater treatment system provided in an embodiment of the present application;
FIG. 5 is a schematic structural diagram of an advanced treatment unit and a metering tank of the beer wastewater treatment system according to the embodiment of the present application;
FIG. 6 is a schematic structural diagram of a sludge treatment unit of the beer wastewater treatment system provided by the embodiment of the present application;
fig. 7 is a schematic structural diagram of a loop clarifier provided in an embodiment of the present application.
Description of reference numerals:
11-a regulating reservoir; 12-a grid; 13-sewage lift pump;
21-anaerobic granular sludge reactor; 22-a biogas collection and utilization device;
31-a loop clarifier; 311-outer baffles; 312-a flow-guiding through hole; 313-an inner baffle; 314-an overflow launder; 315-a sedimentation sloping plate; 316-inverted V-shaped plate; 317-a drain pipe; 318-sloping plate packing;
32-a biological reaction tank;
33-an aeration device; 331-an aerobic aerator; 332-anoxic aerator;
34-a blower;
41-a depth processing unit;
51-a metering tank;
61-a sludge storage tank; 62-a sludge dewatering device; 63-a sludge conveyer; and 64-sludge storage.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
As used herein, the singular forms "a", "an", "the" 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. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in figure 1, the beer wastewater treatment system comprises a circulation biological reaction subsystem and an anaerobic granular sludge reactor 21, wherein the anaerobic granular sludge reactor 21 can adopt an upflow anaerobic sludge blanket, an anaerobic granular sludge blanket, an internal circulation reactor, an anaerobic folded plate type reactor or an anaerobic sequential reactor and the like. The circulation biological reaction subsystem comprises a biological reaction tank 32, a circulation clarifier is arranged at the top of the biological reaction tank 32, an aeration device 33 is arranged in the biological reaction tank 32 and is positioned below the circulation clarifier, and the aeration device 33 is connected with a blower 34 outside the biological reaction tank 32 through a gas pipeline so as to convey gas into the biological reaction tank 32 through the blower 34 and carry out aeration through the aeration device 33. The aeration device 33 is at a certain distance from the bottom of the biological reaction tank 32, when the aeration device 33 performs aerobic aeration, the aeration effect of the aeration device 33 ensures that the oxygen content of the liquid between the aeration device 33 and the water surface at the top of the tank is higher to form an aerobic zone, and the oxygen content of the liquid between the horizontal plane of the aeration device 33 and the bottom of the biological reaction tank 32 is lower to form an anoxic zone.
Fig. 7 is a schematic structural diagram of the circulation clarifier 31 provided in the embodiment of the present application, and as shown in fig. 7, the circulation clarifier 31 includes an outer guide plate 311, an inner guide plate 313 arranged in the outer guide plate 311 and connected to the outer guide plate 311, a guide through hole 312 is formed above the outer guide plate 311, an inclined plate 315 is obliquely arranged below the outer guide plate 311, the inclined plate 315 is connected to a lower end of the outer guide plate 311, so that a tapered shape with a large top and a small bottom is formed below the circulation clarifier 31, an inverted V-shaped plate 316 is arranged at a lower end of the inclined plate 315, an annular inclined plate filler 318 (or an inclined tube filler) is arranged between the inner guide plates 313, an overflow tank 314 is arranged above the inclined plate 315, and.
When sewage treatment is carried out, sewage is introduced into the anaerobic granular sludge reactor 21 for anaerobic biological treatment, the treated water is guided to the biological reaction tank 32 through a pipeline, then the aeration device 33 carries out aeration, so that the sewage in the biological reaction tank 32 is fully mixed with sludge containing microorganisms, meanwhile, upward power of a mud-water mixture is provided, the mud-water mixture flows downwards along the inner guide plate 313 through the guide through holes 312 along the outer guide plate 311 of the circulation clarifier 31 in the process of rising, the sludge with higher density is collected along the sedimentation inclined plate 315 and enters the biological reaction tank 32 again through the inverted V-shaped plate 316, and supernatant with lower density enters the overflow groove 314 after passing through the inclined plate filler 318 and is discharged through the drain pipe 317 after being collected.
In the above embodiment, the circulation clarifier is arranged in the biological reaction tank 32, the aeration device 33 is arranged below the circulation clarifier, so that the space from the horizontal plane of the aeration device 33 to the top water surface of the biological reaction tank 32 forms an aerobic reaction zone, and the space from the horizontal plane of the aeration device 33 to the bottom space of the biological reaction tank 32 forms an anoxic reaction zone, so that the circulation biological reaction subsystem integrates anoxic and aerobic biochemical reactions and sedimentation, thereby providing a better environment for aerobic biological treatment. By combining the circulation biological reaction subsystem with the anaerobic granular sludge reactor 21, the sludge concentration and the volume load of the reactor can be greatly improved, the reaction time is shortened, and the wastewater treatment standard can be efficiently and stably achieved.
As shown in fig. 2 and 4, in some embodiments, the circulation clarifier 31, the aerobic zone and the anoxic zone in the biological reaction tank 32 of the circulation biological reaction subsystem are arranged from top to bottom, the aeration device 33 includes an aerobic aerator 331 and an anoxic aerator 332, the aerobic aerator 331 is disposed in the aerobic zone, and the anoxic aerator 332 is disposed in the anoxic zone.
As shown in fig. 2 and 3, in some embodiments, the beer wastewater treatment system further includes a water distribution subsystem, the water distribution subsystem includes a regulating reservoir 11, a grid 12 and a sewage lift pump 13, the grid 12 and the sewage lift pump 13 are disposed in the regulating reservoir 11 and respectively connected to the regulating reservoir 11, a water outlet of the sewage lift pump 13 is connected to a water inlet of the anaerobic granular sludge reactor 21 through a pipeline, when performing sewage treatment, sewage is filtered through the grid 12 and then enters the regulating reservoir 11, and after reaching a designed water level, the sewage lift pump 13 is started to deliver the sewage to the anaerobic granular sludge reactor 21. Through setting up the water distribution subsystem, can control beer wastewater treatment system's into water steadily, get rid of the great granule impurity of particle diameter in the sewage, reduce the wearing and tearing and the jam of facilities such as pipeline, valve.
As shown in fig. 2, in some embodiments, the top of the anaerobic granular sludge reactor 21 is connected to the biogas collection and utilization device 22 through a pipeline, and the gas generated by the reaction in the anaerobic granular sludge reactor 21 is led out to the biogas collection and utilization device 22 for recycling.
As shown in fig. 2 and fig. 5, in some embodiments, the water outlet pipe of the circulation clarifier is connected to the advanced treatment unit 41, and the advanced treatment unit 41 may adopt air flotation, magnetic flocculation, cloth filter, high-efficiency sedimentation, deep bed filter, biological aerated filter, activated carbon adsorption, etc. to perform retreatment on the effluent of the circulation clarifier 31 to ensure that the effluent quality meets the standard. The water outlet of the depth processing unit 41 is connected to the metering tank 51 through a pipe, and the water is discharged after passing through the metering tank 51.
As shown in fig. 2 and fig. 6, in some embodiments, the anaerobic granular sludge reactor 21 and the biological reaction tank 32 are provided with a sludge outlet (not shown) at the bottom thereof, and the sludge outlet is connected to a sludge storage tank 61 of the sludge treatment unit for discharging the granular sludge in the anaerobic granular sludge reactor 21 and the biological reaction tank 32 to the sludge treatment unit for sludge treatment. The sludge treatment unit further includes a sludge dewatering device 62, a sludge conveyor 63 and a sludge storage bin 64, a sludge lift pump (not shown) is installed in the sludge storage pool 61, an output end of the sludge lift pump is communicated to a feed port of the sludge dewatering device 62, and the sludge dewatering device 62 can adopt a belt sludge dewatering machine, a box sludge filter press, a stacked sludge dewatering machine, a horizontal centrifugal sludge dewatering machine and the like, but is not limited thereto. A sludge conveyer 63 is arranged below the sludge outlet of the sewage dehydration device, and the other end of the sludge conveyer 63 is coordinated above a sludge storage bin 64. During sludge treatment, the granular sludge in the anaerobic granular sludge reactor 21 and the biological reaction tank 32 is discharged into a sludge storage tank 61 through a sludge discharge port, is lifted to a sludge dewatering device 62 for dewatering periodically through a sludge lifting pump, and the dewatered granular sludge is sent to a sludge storage bin 64 for storage through a sludge conveyor 63 and is transported to outside periodically for disposal.
It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.