CN114195260B - Double-side water distribution multi-compartment sectional water inlet ABR reactor - Google Patents
Double-side water distribution multi-compartment sectional water inlet ABR reactor Download PDFInfo
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- CN114195260B CN114195260B CN202111503784.6A CN202111503784A CN114195260B CN 114195260 B CN114195260 B CN 114195260B CN 202111503784 A CN202111503784 A CN 202111503784A CN 114195260 B CN114195260 B CN 114195260B
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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
- C02F3/284—Anaerobic digestion processes using anaerobic baffled reactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
Abstract
The invention discloses a double-side water distribution multi-compartment segmented water inlet ABR reactor which comprises a plurality of communicated compartments, wherein two partition plates are arranged in each compartment, each partition plate divides each compartment into an upstream chamber and two downstream chambers, the two downstream chambers are respectively positioned at two sides of the upstream chamber and are communicated with the lower end of the upstream chamber, a packing layer is arranged in each upstream chamber, the upstream chamber in the former compartment is respectively communicated with the two downstream chambers in the latter compartment through a communication port, the communication port is positioned at the upper end of each compartment, the upper end of each upstream chamber is provided with an exhaust hole, and the bottom of each compartment is provided with a conical water distributor; the reactor also comprises a water storage tank which is positioned at the top of the reactor and is respectively communicated with water inlets at the upper ends of the other downstream chambers except the downstream chamber in the last compartment through pipelines. The invention can effectively reduce the dead area of the sludge bed at the bottom, has simple integral structure and better use effect.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a double-side water distribution multi-compartment sectional water inlet ABR reactor.
Background
Under the background of 'carbon reaching peak', 'carbon neutralization' as a development strategy, along with the rapid promotion of urban and industrialized processes in China and the rapid development of urban and industrial wastewater treatment infrastructure, urban wastewater emission reduction and consumption reduction become one of the main problems to be solved at present. At present, sewage treatment mainly comprises biological treatment, mainly comprises aerobic and anaerobic treatment, and under the background of carbon neutralization and carbon peak, the defect of aerobic treatment is increasingly prominent along with global energy crisis, while in biological treatment, anaerobic treatment has a plurality of advantages compared with aerobic treatment, has low running cost and small residual sludge amount, and generates new energy so as to be more suitable for the sewage treatment field. Among anaerobic reactors, an anaerobic baffle reactor (ABR for short) is more prominent, and is a novel anaerobic biological treatment device developed by p.l. mccarty et al in 1982, which is a process of an anaerobic sludge blanket and can treat various organic wastewater, the ABR reactor is like a plurality of up-flow sludge bed (USB) systems side by side, the inside of the ABR reactor is divided into a plurality of up-flow and down-flow grid chambers connected in series by a plurality of vertical baffles, sewage enters the up-flow chamber sludge bed system from the down-flow chamber, the organic matters are degraded by microorganisms, and meanwhile, the methane stirring effect in each chamber promotes mass transfer.
The existing ABR reactor generally adopts a downflow chamber for unilateral water inflow, when high-concentration wastewater is treated or the load is excessively fast, the first cell load in the ABR reactor for single cell water inflow is excessively high, at the moment, hydrolysis acidification bacteria are excessively fast propagated to easily cause VFA accumulation to cause system acidification, the reduction of treatment efficiency can be possibly caused, and the rear-end cell microorganisms are insufficient in nutrients and easy to die, so that a certain amount of granular sludge is difficult to form in each cell, the front load and the rear load are extremely uneven, a certain time is required for normal operation after acidification and alkali consumption are required, the efficiency of the reactor is not maximized, and the operation cost is increased.
Disclosure of Invention
Aiming at the technical problems existing at present, the invention provides a double-side water distribution multi-compartment sectional water inlet ABR reactor, which aims to solve the problems caused by structural limitation in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the double-side water distribution multi-compartment segmented water inlet ABR reactor comprises a plurality of communicated compartments, wherein two partition plates are arranged in each compartment, each partition plate divides each compartment into an upstream chamber and two downstream chambers, the two downstream chambers are respectively positioned at two sides of the upstream chamber and are communicated with the lower end of the upstream chamber, a packing layer is arranged in each upstream chamber, the upstream chamber in the former compartment is respectively communicated with the two downstream chambers in the latter compartment through a communication port, the communication port is positioned at the upper end of each compartment, the upper end of each upstream chamber is provided with an exhaust hole, and the bottom of each compartment is provided with a conical water distributor;
the device also comprises a water storage tank which is positioned at the top of the reactor, wherein the water storage tank is respectively communicated with water inlets at the upper ends of the other downstream chambers except the last downstream chamber in the compartment through pipelines, and a flow regulating valve is arranged on the pipeline.
According to the technical scheme, on one hand, the mode of gravity flow water inlet of the water storage tank is relied on, if low-concentration wastewater is treated, the water can be fed into the first compartment only by segmentation, if the load is overlarge, the water inlet of each compartment can be considered by segmentation, the water inlet of each compartment is controlled through the flow regulating valve, the load of the front compartment is effectively reduced, whether the segmentation water inlet is needed or not is flexibly selected according to the water inlet concentration, and the design can be suitable for treating sewage with different concentrations and is reliable in overall operation; on the other hand, sewage enters the downflow chambers at the two sides through the water storage tank, enters the upflow chamber at the middle part from the lower ends of the downflow chambers at the two sides, and meanwhile, the conical water distributor is arranged at the bottom of the compartment.
Preferably, a water distribution plate is arranged at the position, close to the lower end of each downflow chamber, the lower ends of the downflow chambers are separated into different circulation channels by the water distribution plates, the lower ends of the water distribution plates are provided with first baffle plates bent towards the direction of the upflow chambers, the lower ends of the separation plates are provided with second baffle plates bent towards the direction of the upflow chambers, the first baffle plates are parallel to the second baffle plates, the first baffle plates are positioned below the second baffle plates, and the extension length of the first baffle plates is longer than that of the second baffle plates.
The device can be arranged in the center of the upward flow chamber and the two outer walls of the downward flow chamber, so that the water inlet and the bottom sludge can be fully contacted, the bottom of the upward flow chamber is provided with the raised conical water distributor, the sewage between the outer walls of the two sides of the downward flow chamber and the water distributor can reach the center of the upward flow chamber to increase the suspension of the sludge bed, the sewage between the water distributor and the partition plate can reach the area of the upward flow chamber close to the two sides of the upward flow chamber, and the gas and the liquid flow upwards integrally.
Preferably, the lowest position of the communication ports between adjacent compartments gradually decreases with the direction of water flow. This arrangement facilitates the ingress of sewage from a preceding compartment into a subsequent compartment by gravity flow of water.
Preferably, two heating chambers are arranged in the water storage tank, a filter screen is arranged at the communication part of the heating chambers and the water storage tank, a heating plate and a temperature sensor are arranged in the heating chambers, and the heating chambers at the corresponding sides are communicated with the water inlet holes of the downflow chamber through pipelines.
The microorganism in the anaerobic reaction has higher temperature requirement, especially methanogen, and is generally better in medium-temperature anaerobic digestion (the temperature is 35 ℃), and generally has lower temperature in winter or in many areas at night, so the scheme is provided with two heating chambers in the water storage tank, and sewage enters the downflow chamber after being heated to the set temperature by the heating chambers, thereby facilitating the reaction.
Preferably, a solar storage battery is arranged at the top of the water storage tank, and the solar storage battery is electrically connected with the heating plate. So set up, utilize solar energy to charge to the battery daytime, provide the energy to the hot plate by the battery evening and make the water of heating chamber heat up
Preferably, the water storage tank is communicated with a sewage source through a water inlet pipe, the water inlet pipe is communicated with a water pump, a float sensor is arranged in the water storage tank, and the float sensor is electrically connected with the water pump.
Preferably, the water storage tank is provided with a blow-down pipe, the blow-down pipe is positioned at a position close to the bottom of the water storage tank, and the bottom of the water storage tank is of a slope design, so that water can be emptied conveniently.
Compared with the prior art, the invention has the beneficial effects that: on one hand, the invention can flexibly select whether to need sectional water inlet according to the concentration of the water inlet, and can adjust the flow valve according to the removal rate of pollutants in each compartment so as to control the water inlet of each compartment; on the other hand, sewage enters the up-flow chamber positioned in the middle part from the lower ends of the down-flow chambers at two sides, and meanwhile, the conical water distributor is arranged at the bottom of the compartment, so that the water inlet and the bottom sludge can be fully contacted in comparison with the traditional design of double-side water distribution with single-side water inlet, the water distribution is uniform, the dead area of the bottom sludge bed is effectively reduced, the whole structure is simple, and the using effect is good.
Description of the drawings:
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a top view of fig. 2 with the water storage tank removed.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be understood that the scope of the subject matter described above is limited to the following examples, and all techniques implemented based on the present disclosure are within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanically or electrically coupled, may be in communication with each other between two elements, may be directly or indirectly coupled through intermediaries, and may be construed in a specific manner by those skilled in the art as appropriate.
The double-side water distribution multi-compartment segmented water inlet ABR reactor shown in the attached drawings 1-3 comprises a plurality of compartments 8 which are sequentially communicated, each compartment 8 is internally provided with two partition plates 13, each compartment 8 is divided into an upstream chamber 1 and two downstream chambers 2 by the partition plates 13, the two downstream chambers 2 are respectively positioned at two sides of the upstream chamber 1, the two downstream chambers 2 are communicated with the lower end of the upstream chamber 1, a filler layer 12 is arranged in each upstream chamber 1, the filler layer adopts loofah sponge filler, the height of the filler layer is about 1/3 of the height of the upstream chamber, and the filler is placed in a fixed grid. The upstream chamber 1 in the previous compartment 8 is respectively communicated with the two downstream chambers 2 in the next compartment 8 through the communication ports 6, the communication ports 6 are positioned at the upper end of each compartment 8, the communication ports 6 between the upstream chamber of the previous compartment 8 and the downstream chamber of the next compartment are arranged at the opposite angles of the upstream chamber and the downstream chamber of the next compartment, and the lowest positions of the communication ports 6 between the adjacent compartments 8 gradually decrease along with the water flow direction, so that water is facilitated to flow from the previous compartment to the next compartment under the action of gravity.
The upper end of each upflow chamber 1 is provided with an exhaust hole 11, the bottom of each compartment 8 is provided with a conical water distributor 3, and one compartment 8 at the rearmost end is provided with a reactor water outlet 7.
At present, the research on the water distribution uniformity problem of the ABR anaerobic reactor in China is less, the uniform water distribution is often used as a key point when the anaerobic reactor is designed, the existing ABR reactor generally adopts the single-side water inlet of a downflow chamber, namely, a folded plate of the downflow chamber extends into the center of the bottom of an upflow chamber so that water flows upwards through the center to enable muddy water to be fully contacted, and water is independently fed into the upflow chamber by relying on a gap between the upflow chamber and the downflow chamber, but the water distribution of a region vertically upwards of the folded plate is difficult to be uniform, the effect of treating low-concentration waste water gas is poor, a sludge bed is difficult to fully suspend and fluidize, the mass transfer effect of the reactor is not strong, and the full contact between sludge and water is difficult to be realized; if the bottom of the upflow chamber adopts a water distribution pipe for mechanical water distribution, the energy consumption is too high, and the water distribution Guan Rong of the sludge bed at the bottom is easy to block.
Therefore, in this embodiment, a water distribution plate 21 is disposed in each downflow chamber 2 near the lower end thereof, the water distribution plates 21 are disposed along the vertical direction and parallel to the partition plates 13, the front and rear ends of the water distribution plates 21 are connected to the front and rear end plates of the compartments 8, the water distribution plates 21 divide the lower end of the downflow chamber 2 into different flow channels, the lower end of the water distribution plates 21 is provided with a first baffle 24 bent toward the upflow chamber 1, the lower end of the partition plates 13 is provided with a second baffle 14 bent toward the upflow chamber 1, the first baffle 24 and the second baffle 14 extend into the lower end region of the upflow chamber, the first baffle 24 is parallel to the second baffle 14, and the first baffle 24 is disposed below the second baffle 14, and the extension length of the first baffle 24 is longer than the extension length of the second baffle 14.
The design of water distribution at the centers of the upward flow chambers at the left side and the right side of the ABR and the side walls of the compartments can lead the water inflow and the sludge at the bottom of the upward flow chamber to be fully contacted, the bottom of the upward flow chamber is provided with a raised conical water distributor, so that the sewage between the water distribution plate 21 and the side walls of the compartments can reach the center (area I) of the upward flow chamber to increase the suspension of the sludge bed, and the sewage between the separation plate 13 and the water distribution plate 21 can reach the areas (area II) at the two sides of the upward flow chamber.
The reactor also comprises a water storage tank 4, wherein the water storage tank 4 is positioned at the top of the reactor, two heating chambers 5 are arranged in the water storage tank 4, a filter screen 51 is arranged at the communication position between the heating chambers 5 and the water storage tank 4, a heating plate 52 and a temperature sensor 53 are arranged in the heating chambers 5, a solar storage battery 43 is arranged at the top of the water storage tank 4, the solar storage battery 43 is electrically connected with the heating plate 52, the heating chambers 5 at the corresponding sides are communicated with the water inlet holes of the downflow chamber 2 through pipelines, and meanwhile, a flow regulating valve is arranged on the pipelines.
The downflow chamber 2 in the last compartment 8 is not in communication with the heating chamber in the water storage tank 4.
The water storage tank 4 is communicated with a sewage source through a water inlet pipe 41, the water inlet pipe 41 is communicated with a water pump, a float sensor 42 is arranged in the water storage tank 4, and the float sensor 42 is electrically connected with the water pump. The rear end connection of storage water tank 4 establishes the blow-down pipe 45, and this blow-down pipe 45 is located the position department that is close to storage water tank 4 bottom, and the bottom of storage water tank 4 is slope design simultaneously, does benefit to the water evacuation.
In this embodiment, the mode of flowing water by gravity of the water storage tank is relied on, if the low-concentration wastewater is treated, the water can be fed without being segmented, only the flow valves on the downflow chamber pipelines at the two sides of the first compartment are opened, and when the load is overlarge, the segmented water feeding can be considered, and the flow valves can be regulated according to the removal rate of pollutants in each compartment so as to control the water feeding quantity of each compartment, thus effectively reducing the load of the previous compartment, flexibly selecting whether the segmented water feeding is needed according to the water feeding concentration, adopting the design can adapt to the treatment of the wastewater with different concentrations, the water level of the water storage tank can be controlled automatically by combining a float sensor and a water pump, and the whole operation is more reliable.
The heating chambers are arranged on two sides of the water storage tank, the storage battery is charged by solar energy and heats the heating plate, the temperature of sewage is increased after entering the heating chamber, only water in a small area of the heating chamber is heated, waste caused by too fast heat dissipation when water in a large area is prevented from being heated, and the energy-saving and environment-friendly effects are achieved. The bottom of the water storage tank is provided with a certain slope energy measure along the water flow direction, so that the water and mud can be conveniently discharged in the later stage.
The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the present invention should be within the protection scope defined by the claims.
Claims (6)
1. A double-side water distribution multi-compartment sectional water inlet ABR reactor is characterized in that: the device comprises a plurality of communicated compartments (8), wherein each compartment (8) is internally provided with two partition plates (13), each partition plate (13) is internally divided into an upstream chamber (1) and two downstream chambers (2) by each compartment (8), the two downstream chambers (2) are respectively positioned at two sides of the upstream chamber (1), the two downstream chambers (2) are communicated with the lower end of the upstream chamber (1), each upstream chamber (1) is internally provided with a packing layer (12), the upstream chamber (1) in the previous compartment (8) is respectively communicated with the two downstream chambers (2) in the next compartment (8) through a communication port (6), the communication port (6) is positioned at the upper end of each compartment (8), the upper end of each upstream chamber (1) is provided with an exhaust hole (11), and the bottom of each compartment (8) is provided with a conical water distributor (3);
the device also comprises a water storage tank (4), wherein the water storage tank (4) is positioned at the top of the reactor, the water storage tank (4) is respectively communicated with water inlets at the upper ends of the other downflow chambers (2) except the downflow chamber (2) in the last compartment (8) through pipelines, and a flow regulating valve is arranged on the pipeline;
the position department that is close to its lower extreme in every downflow room (2) all is equipped with water distribution board (21), and this water distribution board (21) will the lower extreme of downflow room (2) is separated into different circulation passageway, the lower extreme of water distribution board (21) is equipped with towards first baffling board (24) that upward flow room (1) direction was buckled, the lower extreme of division board (13) is equipped with towards upward flow room (1) direction is buckled second baffling board (14), first baffling board (24) with second baffling board (14) are parallel, just first baffling board (24) are located the below position of second baffling board (14), the extension length of first baffling board (24) is longer than the extension length of second baffling board (14).
2. A double-sided water distribution multi-compartment staged water intake ABR reactor as defined in claim 1, wherein: the lowest position of the communication ports (6) between adjacent compartments (8) gradually decreases with the water flow direction.
3. A double-sided water distribution multi-compartment staged water intake ABR reactor as defined in claim 1, wherein: two heating chambers (5) are arranged in the water storage tank (4), a filter screen (51) is arranged at the communication position of the heating chambers (5) and the water storage tank (4), a heating plate (52) and a temperature sensor (53) are arranged in the heating chambers (5), and the heating chambers (5) at the corresponding sides are communicated with the water inlet holes of the downflow chamber (2) through pipelines.
4. A double-sided water distribution multi-compartment staged water intake ABR reactor as defined in claim 3, wherein: a solar storage battery (43) is arranged at the top of the water storage tank (4), and the solar storage battery (43) is electrically connected with the heating plate (52).
5. A double-sided water distribution multi-compartment staged water intake ABR reactor as defined in claim 1, wherein: the water storage tank (4) is communicated with a sewage source through a water inlet pipe (41), the water inlet pipe (41) is communicated with a water pump, a float sensor (42) is arranged in the water storage tank (4), and the float sensor (42) is electrically connected with the water pump.
6. A double sided water distribution multi compartment staged feedwater ABR reactor according to claim 1 or 5, characterized in that: the water storage tank (4) is provided with a blow-down pipe (45), the blow-down pipe (45) is positioned at a position close to the bottom of the water storage tank (4), and the bottom of the water storage tank (4) is of a slope design, so that water can be emptied conveniently.
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| CN114195260B true CN114195260B (en) | 2023-09-22 |
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2021
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