CN214299767U - Integrated sedimentation built-in deepwater aeration bioreactor - Google Patents
Integrated sedimentation built-in deepwater aeration bioreactor Download PDFInfo
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- CN214299767U CN214299767U CN202023270099.7U CN202023270099U CN214299767U CN 214299767 U CN214299767 U CN 214299767U CN 202023270099 U CN202023270099 U CN 202023270099U CN 214299767 U CN214299767 U CN 214299767U
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 58
- 238000005273 aeration Methods 0.000 title claims abstract description 57
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
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- 238000004065 wastewater treatment Methods 0.000 abstract description 8
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 9
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- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 3
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Abstract
The application provides an integral type deposits built-in deep water aeration bioreactor, it includes: the device comprises an anoxic zone, an aerobic zone and a sedimentation zone, wherein the sedimentation zone is arranged above the anoxic zone, a mud bucket is arranged in the sedimentation zone and used for refluxing precipitated sludge to the anoxic zone through an annular gap at the bottom of the mud bucket, the aerobic zone is arranged at the periphery of the anoxic zone and the sedimentation zone and surrounds the anoxic zone and/or the sedimentation zone, an aeration device is arranged in the aerobic zone, the anoxic zone is communicated with the aerobic zone through a communication port, mixed liquid in the aerobic zone is lifted by an air lift pump and flows back to the sedimentation zone through a sludge reflux gas-liquid separation tank, a spoke-shaped or annular water distribution device for solid-liquid separation, and water after solid-liquid separation is discharged from a water outlet weir; the mixed liquid which needs to flow back from the aerobic zone to the anoxic zone is lifted by a mixed liquid gas stripping pump to a mixed liquid gas-liquid separation tank, and enters the anoxic zone together with the inlet water after separation. Thus, the waste water treatment equipment has high efficiency, low land occupation and low maintenance workload.
Description
Technical Field
The application relates to the field of wastewater treatment, in particular to an integrated sedimentation built-in deepwater aeration bioreactor suitable for organic wastewater, high-nitrogen-content wastewater and toxic and harmful wastewater.
Background
The discharge standard of the petrochemical industry, the coking industry, the coal chemical industry, the municipal administration industry, the brewing industry, the steel industry and other industries on the total nitrogen of ammonia nitrogen is further improved, the discharge standard of the ammonia nitrogen is generally required to be 5mg/L, the discharge standard of the total nitrogen is required to be 15mg/L, and the requirement on some occasions is higher. At present, most industrial industries adopt two-stage anoxic/aerobic and sedimentation processes, and the process has the advantages of long process, more power equipment, large floor area and high operation and maintenance cost.
Therefore, there is a need for improvements in existing wastewater treatment plants.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application provides an integrated sedimentation built-in deepwater aeration bioreactor (hereinafter referred to as "device") that integrates anoxic/aerobic biochemical treatment, sedimentation, sludge recirculation, mixed liquid recirculation, and aeration, and the device can remove biochemically degradable pollutants such as organic matter, nitrogen, and phosphorus.
In order to achieve the above-mentioned purpose, the present application adopts the following scheme,
the deep water aeration bioreactor is put to integral type sediment, its characterized in that includes:
an anoxic zone, an aerobic zone and a sedimentation zone,
the sedimentation zone is arranged above the anoxic zone, a mud bucket is arranged in the sedimentation zone and is used for returning the sedimentary sludge to the anoxic zone through an annular gap at the bottom of the mud bucket,
the aerobic zone is arranged at the periphery of the anoxic zone and the sedimentation zone, the aerobic zone surrounds the periphery of the anoxic zone and/or the sedimentation zone, an aeration device is arranged in the aerobic zone,
the anoxic zone is communicated with the aerobic zone through a communication port,
the mixed liquid in the aerobic zone is lifted by an air stripping pump to flow back to a gas-liquid separation tank and a spoke-shaped or annular water distribution device through sludge to a precipitation zone for solid-liquid separation, and water after solid-liquid separation is discharged from a water outlet weir;
the mixed liquid which needs to flow back from the aerobic zone to the anoxic zone is lifted by a mixed liquid gas stripping pump to a mixed liquid gas-liquid separation tank, and enters the anoxic zone together with the inlet water after separation. By the design, the water treated by the equipment meets the total nitrogen emission standard of 15mg/L or places with higher requirements. Compared with the prior art, most industrial industries adopt two-stage anoxic/aerobic and sedimentation processes, the device is shortened to one-stage biochemistry, has the functions of effectively removing organic matters, ammonia nitrogen, total nitrogen, phosphorus, SS and the like, has the capability of resisting the impact of toxic and harmful substances, is particularly suitable for being used in industries such as coking, coal chemical industry, petrochemical industry and the like, and has great advantages of reducing the tank volume and saving the occupied area.
In one embodiment, the aeration device is a flexible perforated aeration pipe, wherein the aeration pipe is provided with air outlets which are vertically and uniformly arranged downwards or the aeration device is a microporous aeration device.
In one embodiment, the hopper is tapered or annularly tapered; and a sludge return port or an annular return slit is arranged on the lower side of the mud bucket.
In one embodiment, a flow guide plate is arranged at the return slit or the return opening, or a conical flow guide device is arranged below the sludge return opening, or
The return slot/opening is angled downward and extends a length.
In one embodiment, the integrated sedimentation-embedded deepwater aeration bioreactor is characterized by comprising a sedimentation component which is arranged in a sedimentation area, wherein an air stripping pump lifts mixed liquid in an aerobic area to a sludge reflux gas-liquid separation tank which is arranged at the top of the bioreactor, a fence, a flow stabilizing plate and a metering weir are arranged in the gas-liquid separation tank, and the mixed liquid enters a spoke-type or ring-type water distribution device after passing through the gas-liquid separation tank and is uniformly distributed in the sedimentation area for solid-liquid separation.
In one embodiment, the water outlet of the water distribution device is a water distribution bell mouth or a water distribution ring.
In one embodiment, the integrated sediment is internally provided with the deepwater aeration bioreactor, and effluent water after solid-liquid separation in the sediment zone is discharged to the water collecting tank through an effluent weir arranged at the upper part of the sediment zone and is discharged through a discharge port.
In one embodiment, the effluent weir is a triangular weir.
In one embodiment, a stirring device is disposed in the anoxic zone, and the stirring device is mechanically stirred, and can be a vertical stirrer or a submersible stirrer, and the flow pushing direction is downward. This avoids the agitated water from interfering upwards with the settling in the settling zone.
In one embodiment, the communication port is disposed at the bottom of the bioreactor, and the plurality of communication ports are uniformly arranged along the circumferential direction and avoid the stripping pump to avoid short flow.
In one embodiment, the integrated sedimentation-embedded deepwater aeration bioreactor is characterized in that,
further comprising: a liquid level meter arranged at the measuring weir, an air flow meter arranged on the air lifting air pipeline for controlling the lifted liquid mixture amount, and a dissolved oxygen meter arranged in the aerobic zone for controlling the air amount for aeration.
In one embodiment, the aeration device is a deep water aeration device, the total height of the aeration device is between 10 and 15m, and the water depth of the aerobic zone is between 9 and 14 m.
In one embodiment, the mixed liquid reflux is realized by a mixed liquid reflux stripping pump, and the mixed liquid reflux amount is 5-40: 1, adjusting the reflux quantity of the mixed liquid by adjusting the air quantity of the stripping pump; the mixed liquid is lifted to a gas-liquid separation tank through a mixed liquid gas stripping pump, a fence with a special structure is arranged in the gas-liquid separation tank, a flow stabilizing plate and a metering weir are arranged at the rear end of the gas-liquid separation tank, and the gas-liquid separation tank is arranged at the top of the equipment; the reflux mixed liquid is mixed with inlet water at the rear end of the gas-liquid separation tank, and then enters a central guide cylinder in the center of the equipment and a water inlet ring at the periphery of the upper part of the anoxic zone, and then enters the anoxic zone.
Advantageous effects
Compared with the prior art, the embodiment of the application has the following advantages:
the application provides a reactor of integral type has the waste water treatment equipment of the low maintenance work load of high efficiency low-floor area, is applicable to organic waste water treatment, high nitrogenous waste water denitrogenation, and is strong to the toxic and harmful substance shock resistance in the waste water, gets rid of efficiently.
Drawings
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic process flow diagram of a bioreactor according to an embodiment of the present application.
FIG. 2 is a schematic front cross-sectional view of a bioreactor according to an embodiment of the present application.
FIG. 3 is a schematic top view of the bioreactor of the embodiment of FIG. 2.
FIG. 4 is a schematic diagram of a variation of the bioreactor of the embodiment of FIG. 2.
FIG. 5a is a schematic front cross-sectional view of a bioreactor according to an embodiment of the present application.
FIG. 5b is a schematic top view of FIG. 5 a.
FIG. 6a is a schematic front cross-sectional view of a bioreactor according to an embodiment of the present application.
FIG. 6b is a schematic top view of FIG. 6 a.
FIG. 7a is a schematic front cross-sectional view of a bioreactor according to another embodiment of the present application.
FIG. 7b is a schematic top view of FIG. 7 a.
FIG. 8a is a schematic front cross-sectional view of a bioreactor according to another embodiment of the present application.
FIG. 8b is a schematic top view of FIG. 8 a.
FIG. 9a is a schematic front cross-sectional view of a bioreactor according to another embodiment of the present application.
Fig. 9b is a schematic top view of fig. 9 a.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated. By definition, in this embodiment reference will be made to tds (total dissolved solids), which refers to the total dissolved solids, also known as total salt content, including both inorganic and organic content. COD (chemical Oxygen demand) means that the chemical Oxygen demand is the amount of reducing substances to be oxidized in a water sample measured chemically.
The embodiment of the application provides an integrated Biological reaction device for wastewater treatment, which is named as an integrated Sedimentation and Deep water Aeration Biological Reactor (English name). the Reactor is composed of an anoxic/aerobic biochemical Reactor, a Sedimentation device, a sludge backflow device, a mixed liquid backflow device, an Aeration device and the like, is mainly used for biochemically degrading organic matters and the like in wastewater, thereby reducing COD, BOD, ammonia nitrogen, total phosphorus, SS and the like, and can replace an anoxic tank, an aerobic tank and a Sedimentation tank in the traditional activated sludge treatment process. The wastewater treatment equipment is high in efficiency, low in occupied area and low in maintenance workload, is suitable for organic wastewater treatment and denitrification of high-nitrogen wastewater, and is high in impact resistance and removal efficiency on toxic and harmful substances in the wastewater.
The bioreactor integrates anoxic/aerobic biochemistry, sedimentation, sludge backflow, mixed liquid backflow and aeration into a whole, and can realize the removal of organic matters, nitrogen, phosphorus and other biodegradable pollutants.
The integrated equipment comprises anoxic (denitrification) biochemistry, aerobic (nitrification) biochemistry, mud-water separation (sedimentation), sludge backflow and mixed liquor backflow, and the complete process flow is shown in figure 1:
the water (inlet water) to be treated flows into the anoxic zone for treatment, flows into the aerobic zone after treatment, is pumped into the precipitation zone through the air stripping pump, the sludge precipitated in the precipitation zone flows back to the anoxic zone, and the separated outlet water flows out through the water outlet. In this embodiment, in the anoxic zone, for nitrogen-containing wastewater, denitrifying bacteria convert nitrate nitrogen into nitrogen gas using organic matter to remove nitrate nitrogen. For medium and high concentration organic wastewater, the anoxic zone also has the function of hydrolyzing organic high molecular substances into easily biodegradable small molecular substances.
In the aerobic zone, aiming at organic wastewater and wastewater containing ammonia nitrogen, organic matters in the wastewater are degraded into carbon dioxide and water, and the ammonia nitrogen is converted into nitrate (nitrite) nitrogen by using nitrifying bacteria. In the sedimentation zone, the effluent treated in the aerobic zone is lifted to a sedimentation system of the sedimentation zone through a sludge reflux gas stripping pump, in order to prevent the effluent from being aerated to influence the sedimentation effect, a gas-liquid separation tank is arranged in front of the sedimentation zone, a plurality of fences are arranged in the gas-liquid separation tank, the direction of water flow can be continuously changed, turbulent flow is formed to release bubbles, and in order to improve the sedimentation effect or remove phosphorus, a flocculating agent or a phosphorus removing agent can be added in front of the fences.
The integrated sedimentation built-in deepwater aeration bioreactor comprises an anoxic zone, an aerobic zone and a sedimentation zone, wherein the anoxic zone is arranged below the sedimentation zone, and the anoxic zone is communicated with the aerobic zone through a communication port at the lower part of the device; the aerobic zone is arranged at the periphery of the anoxic zone and the precipitation zone. The aerobic zone is internally provided with a flexible perforated aeration pipe for aeration, the depth of the tank of 10-15m greatly improves the dissolved oxygen efficiency of the perforated aeration pipe, and the dissolved oxygen can reach more than 20 percent generally. The aerobic zone is provided with two air stripping pumps of sludge reflux and mixed liquid reflux. The sludge-water mixed liquid after aerobic biochemical treatment passes through a sludge reflux gas stripping pump and a gas-liquid separation tank and then enters a settling zone through a spoke type or ring type water distribution device; the mixed liquid to be refluxed is lifted to a mixed liquid gas-liquid separation tank by a mixed liquid reflux gas stripping pump and then enters an anoxic zone. According to the water quality and quantity of the treated object, the aerobic zone can be provided with biological filler. In order to accurately measure the return flow of the sludge, a triangular weir or a rectangular weir can be arranged at the rear section of the gas-liquid separation tank, and the amount of water entering a settling zone is accurately measured by a measuring scale or an ultrasonic liquid level meter. A stirrer is arranged in the anoxic zone; the returned mixed liquid and the equipment inlet water enter the anoxic zone through the central guide cylinder and the water inlet ring, the central guide cylinder is arranged in the center of the sedimentation zone of the equipment, the water inlet ring is positioned at the periphery of the upper part of the anoxic zone, the bottom of the water inlet ring is provided with water through holes or water through seams which the water inlet and the returned mixed liquid can be uniformly distributed to the anoxic zone; in order to avoid short flow, the flow inlet direction of the water inlet ring is horizontal tangential; in order to avoid the gas accumulation at the top of the anoxic zone, one or more vent pipes (or side wall guide cylinders) are arranged at the cylinder wall below the water inlet ring and the water inlet ring, so that the gas can be discharged outside the device to balance the water level of the anoxic zone; in order to avoid the blockage of the water inlet ring by the accumulated mud, the vent pipe of the water inlet ring can be connected with flushing water for flushing. In order to prevent the mixed liquid in the anoxic zone from flowing back to the sedimentation zone, a guide plate is arranged at the backflow seam (opening) of the mud bucket in the sedimentation zone. The central part of the settling zone is provided with a spoke type or ring type water distribution device which can evenly distribute the mud-water mixed liquid entering the settling zone to the settling zone, the lower part of the water distribution device is provided with a water distribution bell mouth or a water distribution ring, and the outlet direction of the water distribution bell mouth or the water distribution ring is inclined downwards. And a water outlet triangular weir plate is arranged above the settling zone, and water after solid-liquid separation flows out of the water outlet triangular weir plate, enters a water collecting tank and is discharged. The settling zone can be provided with inclined tube (plate) filler according to the quality and quantity of water to be treated. And residual sludge generated by biochemical treatment is discharged through a sludge discharge pipe in the sludge hopper. The sludge in the settling zone automatically flows into the anoxic zone through gravity to realize sludge backflow, and the mixed liquid in the anoxic zone automatically flows into the aerobic zone through gravity, so that the liquid level in the settling zone is the highest, and the liquid level in the anoxic zone is the lowest. The mixed liquid in the aerobic zone needs to be lifted when entering the precipitation zone and the anoxic zone, and the two-step lifting is realized by utilizing a specially designed stripping pump. In order to avoid the interference of bubbles in the settling zone, the mixed liquid firstly enters a sludge reflux gas-liquid separation tank before entering the settling zone; the front end of the sludge backflow gas-liquid separation tank is provided with a plurality of fences with arc upstream surfaces, so that the mixed liquid is in a turbulent flow state; in order to avoid the sludge zoogloea from being broken and reduce the turbulence intensity, the gap rate of the fence in the back channels is higher than that in the front channels; the rear end of the gas-liquid separation tank is provided with a flow stabilizing plate, a triangular or rectangular metering tank and a liquid level scale or an ultrasonic liquid level meter for metering when needed. According to the precipitation condition of the precipitation zone or the phosphorus removal requirement, a polymeric flocculant or a phosphorus removal agent can be added at the front end of the gas-liquid separation tank. In order to avoid gas accumulation in an anoxic zone, the mixed liquid firstly enters a mixed liquid reflux gas-liquid separation tank before entering the anoxic zone, and is internally provided with a turbulence fence, a flow stabilizing plate and a metering weir, and a liquid level scale or an ultrasonic liquid level meter can be arranged as required; when the reflux proportion is large, a plurality of sets of gas-liquid separation tanks can be arranged. The waste water to be treated enters the gas-liquid separation tank at the rear end of the mixed liquid gas-liquid separation tank (behind the metering weir), and enters the anoxic zone after being mixed with the mixed liquid. The integral sedimentation built-in deepwater aeration bioreactor is also called an integral sedimentation zone built-in deepwater aeration bioreactor.
The structure of the integrated sedimentation-type deepwater aeration bioreactor will be described in detail with reference to fig. 2 and 3. FIG. 2 is a schematic front cross-sectional view of a bioreactor according to an embodiment of the present application. FIG. 3 is a schematic top view of the bioreactor of FIG. 2.
Firstly, water enters the rear end of a mixed liquid reflux gas-liquid separation tank 5a through a water inlet pipe, is mixed with the refluxed mixed liquid, then enters an anoxic zone II through a water inlet ring 1 and a central guide cylinder 2 respectively, under the stirring of a stirrer 3, wastewater is fully contacted with anoxic microorganisms and denitrifying bacteria in the mixed liquid to carry out biochemical reaction, organic matter and (nitrite) nitrate nitrogen in the wastewater are degraded and converted into small molecular organic matter to generate carbon dioxide, water and nitrogen, the reacted muddy water passes through a communicating hole (not shown) at the bottom of a tank, the muddy water enters an aerobic zone III, and under the action of aerobic microorganisms and (nitrite) nitrifying bacteria, the organic matter is degraded into carbon dioxide and water in the aerobic zone, and ammonia nitrogen is converted into (nitrite) nitrate nitrogen; the water after aerobic biochemical treatment and the activated sludge enter a sludge reflux gas-liquid separation tank 5b under the lifting of a sludge reflux air stripping pump 4b, are uniformly distributed by a water distribution device 6 after being separated to remove gas, and enter a precipitation zone. Solid-liquid separation is carried out in the sedimentation zone IV, the clarified water enters the effluent weir 7 and then is collected in the water collecting tank 8, and the clarified water is discharged out of the bioreactor through the effluent fifthly. In the embodiment, the sludge precipitated in the precipitation zone (iv) flows back to the anoxic zone (iv) through the backflow slit (9) at the lower part of the hopper by the action of weight. In the embodiment, the mixed liquid in the aerobic zone (c) is lifted to a mixed liquid reflux gas-liquid separation tank (5 a) through a mixed liquid reflux gas stripping pump (4 a), and after separation and degassing, the mixed liquid is stripped and mixed with the inlet water (i), and then enters the anoxic zone (c). In this embodiment, air necessary for the aerobic zone (c) and air necessary for the air stripping pump (4 a/4 b) (not shown) are supplied from an external air supply device. The air entering the aerobic zone is diffused by the aeration device 10 to provide oxygen for aerobic microorganisms in the aerobic zone III; the residual sludge precipitated in the precipitation zone is discharged through a sludge discharge pipe (not shown). In the embodiment, the sedimentation zone (c) is arranged above the anoxic zone (c), and the aerobic zone (c) is arranged outside the anoxic zone (c) and the sedimentation zone (c). The anoxic zone is also provided with a stirrer 3 (in other embodiments, the anoxic zone can be provided with biological filler according to the water quality and water quantity of the treated object, and in this case, the stirrer is not required). The air stripping pump 4a/4b is arranged in the aerobic zone III, and the gas-liquid separation tank 5(5a/5b) is arranged at the top of the bioreactor. The central guide shell 2 and the water distribution device 6 are concentric structures and are positioned in the center of the bioreactor. The water inlet ring 1 is arranged on the periphery of the upper part of the anoxic zone. Preferably, the water inlet ring 1 is provided with a vent pipe or a side wall guide cylinder (not shown). In the embodiment, the settling area (iv) is provided with a mud bucket, and the inclination angle of the mud bucket is greater than or equal to 60 degrees. The lower end of the mud bucket is provided with a sludge backflow seam (opening), and the sludge after solid-liquid separation flows back to the anoxic zone through the backflow seam (opening). The reflux slit (opening) is obliquely downward and extends for a certain length, and the design avoids the possible bubbles in the anoxic zone from rising to the precipitation zone to interfere the precipitation. In other embodiments, a conical flow guide device is arranged below the return opening to prevent possible bubbles in the anoxic zone from rising to the sedimentation zone to interfere with sedimentation. In the embodiment, the center of the air lift pump is a lifting pipe, the outer ring of the lower end of the air lift pump is an air inlet box, the inner side of the air inlet box is provided with obliquely upward small air distribution holes which are uniformly distributed, and air is sprayed to the lifting pipe, so that the air and the mixed liquid are uniformly mixed.
The integrated sedimentation built-in deepwater aeration bioreactor ensures that a sludge hopper is not easy to accumulate sludge and a backflow seam (opening) is not easy to block through large-proportion sludge backflow (about 3-4: 1); the reflux of the mixed solution in a large proportion (about 5-40: 1) provides guarantee for the removal rate of nitrate (nitrite) nitrogen, and simultaneously dilutes toxic substances in inlet water.
In one embodiment, depending on the quality and quantity of the water to be treated, the anoxic zone and the aerobic zone may be provided with biological fillers 11, the sedimentation zone may be provided with inclined tube (plate) fillers 12 (see fig. 4), and the anoxic zone may be provided without a stirrer. The biological filler 11 can be an elastic filler, a composite filler, a suspension filler, a plait curtain filler, or the like. Other arrangements of the anoxic zone, aerobic zone and settling zone are the same as for the embodiment of figure 2/3.
In one embodiment, as shown in fig. 2, according to the requirement of the site, the ORP meter, the dissolved oxygen meter and the pH meter can be arranged in the anoxic zone, the aerobic zone, the gas supply pipe of the stripping pump 4, the flow meter, the ultrasonic level meter and the on-line COD, ammonia nitrogen, total nitrogen and total phosphorus measuring instrument are respectively arranged on the metering weir of the sludge return and mixed liquid return gas-liquid separation tank 5, and the on-line COD, ammonia nitrogen, total nitrogen and total phosphorus measuring instrument are arranged at the outlet water position (fifthl), and the gas supply fan is controlled by frequency conversion, so that the intelligent fine control can be realized, and the electricity cost and the chemical cost can be saved to the maximum extent. An air flow meter arranged on the air-stripping air pipeline for controlling the amount of the mixture liquid to be stripped, and a dissolved oxygen meter arranged in the aerobic zone for controlling the amount of the air for stripping.
In one embodiment, as a variation of the embodiment of fig. 2, as shown in fig. 5a, fig. 5b is a top view of fig. 5a, the settling zone 120 of the integrated deep water aeration bioreactor 100 is located above (and on the same centerline as) the anoxic zone 110, and the aerobic zone 130 surrounds the settling zone 120 and the anoxic zone 110. The return slot/opening is angled downward and extends a length. The integrated sedimentation-embedded deepwater aeration bioreactor 100 is cylindrical, and the outer diameters of the sedimentation zone 120 and the anoxic zone 110 are the same or approximately the same. Other configurations in this embodiment refer to the fig. 2/3 embodiment. The cross-section of the settling zone 120 is in the shape of an inverted two-sided figure.
In one embodiment, as a variation of the embodiment of fig. 2, shown in fig. 8a, fig. 8b is a top view of fig. 8a, with the settling zone 420 of the integrated settling deepwater aeration bioreactor 400 located above the anoxic zone 410, and the bottom projection of the anoxic zone 410 being within the area of the settling zone 420. The aerobic zone 430 surrounds the precipitation zone 420 and the anoxic zone 410. The integrated precipitation-embedded deepwater aeration bioreactor 400 is cylindrical. The precipitation zone 420 is identical to the center a of the anoxic zone 410. Other structures in the embodiments refer to the fig. 2/3 embodiments. The cross section of the settling zone 420 is in the shape of two inverted splays.
In one embodiment, as a variation of the embodiment of fig. 2, as shown in fig. 6a, fig. 6b is a top view of fig. 6a, the deep water aeration bioreactor 200 is built into the integrated sediment, the sediment zone 220 is tapered, the sediment zone 220 is located in the center of the bioreactor 200, the anoxic zone 210 and the aerobic zone 230 are located at the periphery of the sediment zone 220, and the anoxic zone 210 and the aerobic zone 230 are as required by the application. The integrated sedimentation-embedded deepwater aeration bioreactor 200 is cylindrical (cylindrical). Other configurations refer to the fig. 2/3 embodiment. As a variation of the embodiment of FIG. 6a, as in the embodiment of FIGS. 9a and 9b, the bioreactor 500, the cross-section of the apparatus is square, the settling zone 520 is located in the center of the bioreactor, the settling zone is tapered, and the tapered tip is not in contact with the bottom 501 of the bioreactor. The communicating opening is disposed on the partition plate 502 (not shown), and the anoxic zone and the aerobic zone are communicated through the communicating opening.
In one embodiment, as a variation of the embodiment of fig. 2, as shown in fig. 7a, fig. 7b is a top view of fig. 7a, the settling zone 320 of the integrated deep water aeration bioreactor 300 is located above the anoxic zone 310, and the aerobic zone 330 surrounds the settling zone 320 and the anoxic zone 310. The integrated sedimentation built-in deepwater aeration bioreactor 300 is cylindrical. The cross section of the settling zone 320 is in the shape of two inverted splays. Other configurations in this embodiment refer to the fig. 2/3 embodiment.
The above embodiments are merely illustrative of the technical concepts and features of the present application, and the purpose of the embodiments is to enable those skilled in the art to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All modifications made according to the spirit of the main technical scheme of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The deep water aeration bioreactor is put to integral type sediment, its characterized in that includes:
an anoxic zone, an aerobic zone and a sedimentation zone,
the sedimentation zone is arranged above the anoxic zone, a mud bucket is arranged in the sedimentation zone and is used for returning the sedimentary sludge to the anoxic zone through an annular gap at the bottom of the mud bucket,
the aerobic zone at least partially surrounds the periphery of the anoxic zone and/or the sedimentation zone, an aeration device is arranged in the aerobic zone,
the anoxic zone is communicated with the aerobic zone through a communication port,
the mixed liquid in the aerobic zone is lifted by the air stripping pump to flow back to the gas-liquid separation tank and the spoke-shaped or annular water distribution device through the sludge for solid-liquid separation in the sedimentation zone, and the water after solid-liquid separation is discharged from an outlet through the effluent weir;
the mixed liquid which needs to flow back from the aerobic zone to the anoxic zone is lifted by a mixed liquid gas stripping pump to a mixed liquid gas-liquid separation tank, and enters the anoxic zone together with the inlet water after separation.
2. The integrated sedimentation-embedded deepwater aeration bioreactor as claimed in claim 1, wherein the aeration device is a flexible perforated aeration pipe, the aeration pipe is provided with air outlets which are uniformly arranged vertically downwards or the aeration device is a microporous aeration device.
3. The integrated sediment-embedded deepwater aeration bioreactor as claimed in claim 1, wherein the hopper is conical or annularly conical;
and a sludge return port or an annular return slit is arranged on the lower side of the mud bucket.
4. The integrated sediment-embedded deepwater aeration bioreactor of claim 3,
a guide plate is arranged at the reflux slit or the reflux opening, or
A conical flow guide device is arranged below the sludge return opening, or
The return slot/opening is angled downward and extends a length.
5. The integrated sediment-embedded deepwater aeration bioreactor of claim 1, comprising a sediment assembly disposed within the sedimentation zone,
the gas stripping pump lifts the mixed liquid in the aerobic zone to a sludge reflux gas-liquid separation tank which is arranged at the top of the bioreactor, a fence, a flow stabilizing plate and a metering weir are arranged in the gas-liquid separation tank, and the mixed liquid enters a spoke type or ring type water distribution device after passing through the gas-liquid separation tank, is uniformly distributed to a settling zone and is subjected to solid-liquid separation.
6. The integrated sedimentation built-in deep water aeration bioreactor according to claim 5, wherein the water outlet of the water distribution device is a water distribution bell mouth or a water distribution ring.
7. The integrated sedimentation built-in deepwater aeration bioreactor as claimed in claim 5, wherein effluent from the solid-liquid separation is discharged to a water collection tank through an effluent weir provided at an upper portion of the sedimentation zone and is discharged through a discharge port.
8. The integrated sediment-embedded deep water aerated bioreactor of claim 7, wherein the effluent weir is a triangular weir.
9. The integrated sediment-embedded deepwater aeration bioreactor of claim 1,
and a stirring device is arranged in the anoxic zone, and is stirred mechanically, a vertical stirrer or a submersible stirrer can be selected, and the flow pushing direction is downward.
10. The integrated sediment-embedded deepwater aeration bioreactor of claim 1,
further comprising: a liquid level meter arranged at the measuring weir, an air flow meter arranged on the air lifting air pipeline for controlling the lifted liquid mixture amount,
and a dissolved oxygen meter disposed in the aerobic zone for controlling the amount of air for aeration.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116375204A (en) * | 2023-04-28 | 2023-07-04 | 湖南星湘盈环保科技有限公司 | Sewage treatment tower and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116375204A (en) * | 2023-04-28 | 2023-07-04 | 湖南星湘盈环保科技有限公司 | Sewage treatment tower and application thereof |
| CN116375204B (en) * | 2023-04-28 | 2023-12-22 | 湖南星湘盈环保科技有限公司 | Sewage treatment tower and application thereof |
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Address after: Floor 4, block a, Oriental fisherman's Wharf, 1088 Yangshupu Road, Yangpu District, Shanghai 200082 Patentee after: Mai Wang Environmental Technology Co.,Ltd. Country or region after: China Address before: Floor 4, block a, Oriental fisherman's Wharf, 1088 Yangshupu Road, Yangpu District, Shanghai 200082 Patentee before: MCWONG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Country or region before: China |
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