CN113979536B - Aerobic granular sludge system device and method based on particle size sorting and sludge circulation - Google Patents
Aerobic granular sludge system device and method based on particle size sorting and sludge circulation Download PDFInfo
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- CN113979536B CN113979536B CN202111372475.XA CN202111372475A CN113979536B CN 113979536 B CN113979536 B CN 113979536B CN 202111372475 A CN202111372475 A CN 202111372475A CN 113979536 B CN113979536 B CN 113979536B
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses an aerobic granular sludge system device and method based on particle size sorting and sludge circulation, comprising a reactor main body with a hollow cavity, wherein a first reaction zone, a second reaction zone and a third reaction zone which are independent are coaxially sleeved in the cavity from inside to outside; four adjustable baffles with the same structure are arranged in the first reaction zone at intervals from top to bottom, and are umbrella-shaped structures which can be independently opened and closed; when the first adjustable baffle is opened, the granular sludge intercepted from the first reaction zone can be sent into the second reaction zone; when the fourth adjustable baffle is opened, the granular sludge intercepted in the first reaction zone can be sent into the third reaction zone. The invention realizes the selective sludge discharge and long-term stable operation of the aerobic granular sludge system through particle size separation and sludge circulation, has the advantages of low energy consumption, strong operability, good stability and the like, and improves the utilization efficiency of device resource and energy while maintaining the long-term high-efficiency treatment of pollutants.
Description
Technical Field
The invention belongs to the field of biological wastewater treatment, and particularly relates to an aerobic granular sludge system device and method based on particle size separation and sludge circulation.
Background
The aerobic granular sludge serving as an upgrading process of the activated sludge method has a compact physical structure, excellent settling property, functional flora and high-concentration biomass, and has obvious technical advantages and good application prospects in the aspects of rapid mud-water separation, synchronous nitrogen and phosphorus removal, efficient degradation of toxic substances, reduction of residual sludge and the like. At present, the popularization and application of aerobic granular sludge in practical engineering are influenced due to poor stability of the aerobic granular sludge.
Disclosure of Invention
The invention provides an aerobic granular sludge system device and method based on particle size separation and sludge circulation, aiming at the problems that the prior aerobic granular sludge is poor in stability and easy to disintegrate, and the operation condition is more limited.
The invention adopts the following specific technical scheme:
in a first aspect, the invention provides an aerobic granular sludge system device based on particle size sorting and sludge circulation, which comprises a reactor main body with a hollow cavity, wherein a first reaction zone, a second reaction zone and a third reaction zone which are independent are coaxially sleeved in the cavity from inside to outside; the lower part of the first reaction zone is provided with a first aeration device, the bottom of the first reaction zone is provided with a water inlet, and the side wall of the first reaction zone is provided with a water outlet; the lower part of the second reaction zone is provided with a second aeration device, the lower part of the third reaction zone is provided with a stirring device, and the bottoms of the second reaction zone and the third reaction zone can be communicated with the bottom of the first reaction zone through a sludge return pipe;
a first adjustable baffle, a second adjustable baffle, a third adjustable baffle and a fourth adjustable baffle are arranged in the first reaction zone at intervals from top to bottom; the first adjustable baffle, the second adjustable baffle, the third adjustable baffle and the fourth adjustable baffle have the same structure and are umbrella-shaped structures which can be independently opened and closed; when the first adjustable baffle, the second adjustable baffle, the third adjustable baffle and the fourth adjustable baffle are closed, the umbrella surfaces of the first adjustable baffle, the second adjustable baffle, the third adjustable baffle and the fourth adjustable baffle are all in a vertical state, and the sedimentation of sludge particles cannot be influenced; when the first adjustable baffle, the second adjustable baffle, the third adjustable baffle and the fourth adjustable baffle are opened, the umbrella cover is in a state of being opened and inclined downwards, and the cross section of the first reaction area can be completely covered; the first reaction zone is provided with a first channel which can be communicated with the second reaction zone, a second channel which can be communicated with the outside and a third channel which can be communicated with the third reaction zone; the first adjustable baffle can be communicated with the first channel when opened, and granular sludge intercepted from the first reaction zone is conveyed into the second reaction zone through the first channel; the second adjustable baffle and the third adjustable baffle can be respectively communicated with the second channel, and the granular sludge intercepted in the first reaction zone is sent into a sludge storage device positioned outside the reactor main body through the second channel; and the fourth adjustable baffle can be communicated with the third channel when opened, and the granular sludge intercepted in the first reaction zone is conveyed into the third reaction zone through the third channel.
Preferably, the water inlet is communicated with the first water storage device through a pipeline provided with a water inlet pump.
Preferably, the water outlet is arranged at 1/2 of the effective height of the first reaction zone and is communicated with a second water storage device positioned outside the reactor main body through a pipeline provided with an electromagnetic valve.
Preferably, the first adjustable baffle, the second adjustable baffle, the third adjustable baffle and the fourth adjustable baffle are all connected with a baffle adjusting controller at the top of the reactor main body, and the baffle adjusting controller is used for controlling the opening and closing states of the baffles.
Preferably, the first aeration device is connected with an air pump which is positioned outside the reactor main body through a pipeline.
Preferably, the outer wall surface of the reactor main body is further provided with a water bath device for heating.
Preferably, an automatic online monitoring type sensor for measuring the sedimentation rate of the granular sludge is arranged in the first reaction zone.
Preferably, the valve and the power device in the reactor main body are externally connected with a time relay to control the operation period of the device.
Preferably, valves for controlling the opening and closing of the passages are respectively arranged at the connecting positions of the second reaction zone and the third reaction zone with the sludge return pipe.
In a second aspect, the present invention provides a method for enhancing an aerobic granular sludge reaction by using the aerobic granular sludge system apparatus of any one of the first aspect, specifically comprising:
putting the pollutants to be treated and the aerobic granular sludge into a first reaction zone, and simultaneously introducing a nutrient medium into the first reaction zone through a water inlet to enable the aerobic granular sludge in the first reaction zone to carry out reaction treatment on the pollutants; according to the sedimentation rate of the granular sludge in the first reaction zone, determining the grain size of the granular sludge in the first reaction zone, selectively opening a first adjustable baffle, a second adjustable baffle, a third adjustable baffle and a fourth adjustable baffle to separate the granular sludge with different grain sizes, and selectively discharging, collecting and introducing the granular sludge into the second reaction zone or the third reaction zone;
the second reaction area is used for treating floc granular sludge with the particle size of less than 200 microns, the floc granular sludge in the second reaction area is further cultured and acclimated by a second aeration device at the lower part, and after granulation, the granular sludge with the particle size of more than 200 microns is periodically added into the first reaction area again through a bottom sludge return pipe according to the optimal operation condition of the reactor main body and the pollutant removal efficiency of the reactor main body; the third reaction zone is used for treating aged granular sludge with the particle size of more than 2mm, the aged granular sludge in the third reaction zone is polished and crushed by a stirring device at the lower part, and after cultivation, the granular sludge with the particle size of less than 2mm is periodically added into the first reaction zone again through a bottom sludge return pipe according to the optimal operation condition of the reactor main body and the pollutant removal efficiency of the reactor main body; so as to realize the cyclic utilization of the sludge and ensure that the granular sludge in the first reaction zone is in the optimal state for treating pollutants for a long time.
Compared with the prior art, the invention has the following beneficial effects:
the invention takes the aerobic granular sludge technology as the core, and constructs a novel aerobic granular sludge system strengthening treatment device based on particle size separation and sludge circulation by utilizing the characteristics of large biomass, strong impact load resistance and the like. Through sorting and partition domestication of the particle size, the main reaction area of the device is in a state of efficiently and stably removing pollutants for a long time. The advantages of low energy consumption, strong operability, good stability and the like are realized, and the utilization efficiency of resource energy is improved.
Drawings
FIG. 1 is a schematic diagram of a configuration of an aerobic granular sludge system apparatus;
FIG. 2 is a top view of the reactor body;
in the figure: the device comprises a first water storage device 1, a water inlet pump 2, a water inlet 3, an air pump 4, a first aeration device 5, a first adjustable baffle 61, a second adjustable baffle 62, a third adjustable baffle 63, a fourth adjustable baffle 64, a sludge storage device 7, an automatic online monitoring type sensor 8, a first reaction area 9, a second reaction area 10, a third reaction area 11, a water bath device 12, a time relay 13, a baffle adjusting controller 14, a water outlet 15, an electromagnetic valve 16, a second water storage device 17 and a sludge return pipe 18.
Detailed Description
The invention will be further elucidated and described with reference to the drawings and the detailed description. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.
As shown in fig. 1, the present invention provides an aerobic granular sludge system device based on size sorting and sludge circulation, which mainly comprises a reactor body with a hollow chamber. The hollow chamber of the reactor main body is internally divided into a first reaction zone 9, a second reaction zone 10 and a third reaction zone 11 which are independent, and the first reaction zone 9, the second reaction zone 10 and the third reaction zone 11 are coaxially sleeved from inside to outside. In actual use, the reactor main body, the first reaction zone 9, the second reaction zone 10, and the third reaction zone 11 may be cylindrical. Wherein the first reaction zone 9 is used as a main reaction zone of aerobic granular sludge and is used for treating pollutants through the aerobic granular sludge; the second reaction zone 10 is used as a floc reaction zone and is mainly used for treating aerobic granular sludge with the grain diameter of less than 200 mu m separated from the first reaction zone 9; the third reaction zone 11 is primarily used to treat the aged granular sludge having a particle size greater than 2mm separated from the first reaction zone 9.
Specifically, the first aeration device 5 is arranged at the lower part of the first reaction zone 9, and the first aeration device 5 is used for aerating and supplying oxygen to the granular sludge in the first reaction zone 9. The first aeration device 5 can adopt an aeration disc and is connected with an air pump 4 positioned outside the reactor main body through a pipeline, and when the reactor is in practical use, the air can be supplied to the first aeration device 5 through the air pump 4. The water inlet 3 is seted up to the bottom of first reaction zone 9, and water inlet 3 can be through being equipped with the pipeline of intake pump 2 and first water storage device 1 intercommunication, and when in actual use, intake pump 2 can adopt the peristaltic pump for in sending into first reaction zone 9 with the nutrient medium in the first water storage device 1. The side wall of the first reaction zone 9 is provided with a water outlet 15, and the water outlet 15 can be communicated with a second water storage device 17 positioned outside the reactor main body through a pipeline provided with an electromagnetic valve 16 and used for periodically discharging the sewage in the first reaction zone 9. Since the volume exchange ratio of the present apparatus is preferably 50%, the water discharge port 15 may be provided at 1/2 of the effective height of the first reaction zone 9, and the height-diameter ratio of the apparatus may be 10:1.
the first reaction zone 9 is provided with a first adjustable baffle 61, a second adjustable baffle 62, a third adjustable baffle 63 and a fourth adjustable baffle 64 at intervals from top to bottom, and is used for separating and screening aerobic granular sludge with different sizes, and selectively discharging, collecting or introducing the aerobic granular sludge into the other two reaction zones of the device. In practical applications, the opening heights and the distances of the first adjustable baffle 61, the second adjustable baffle 62, the third adjustable baffle 63 and the fourth adjustable baffle 64 in the first reaction zone 9 need to be determined according to the actual operation state of the reactor, and preferably, the first adjustable baffle 61 can separate granular sludge with a particle size of 200 μm (that is, the particle size of the granular sludge on the upper portion of the first adjustable baffle 61 is less than 200 μm), the second adjustable baffle 62 can separate granular sludge with a particle size of 500 μm (that is, the particle size of the granular sludge between the first adjustable baffle 61 and the second adjustable baffle 62 is 500 μm to 200 μm), the third adjustable baffle 63 can separate granular sludge with a particle size of 1mm (that is, the particle size of the granular sludge between the second adjustable baffle 62 and the third adjustable baffle 63 is 500 μm to 1 mm), and the fourth adjustable baffle 64 can separate granular sludge with a particle size of 2mm (that is, the particle size of the granular sludge between the third adjustable baffle 62 and the fourth adjustable baffle 64 is 2mm to 1 mm).
The first adjustable baffle 61, the second adjustable baffle 62, the third adjustable baffle 63 and the fourth adjustable baffle 64 have the same structure, and are umbrella-shaped structures which can be independently opened and closed. When the first adjustable baffle 61, the second adjustable baffle 62, the third adjustable baffle 63 and the fourth adjustable baffle 64 are closed, the vertical state with the contracted umbrella surfaces is formed, and the sedimentation of sludge particles cannot be influenced. When the first adjustable baffle 61, the second adjustable baffle 62, the third adjustable baffle 63 and the fourth adjustable baffle 64 are opened, the umbrella covers are all in a state of being opened and inclined downwards, and the cross section of the first reaction area 9 can be completely covered. The first reaction zone 9 is provided therein with a first passage capable of communicating with the second reaction zone 10, a second passage capable of communicating with the outside, and a third passage capable of communicating with the third reaction zone 11.
As shown in fig. 2, the first adjustable baffle 61 can communicate with the first channel when opened, and send the granular sludge trapped from the first reaction area 9 into the second reaction area 10 through the first channel, and because the umbrella surface is inclined downward, the trapped granular sludge can be better dropped into the second reaction area 10 under the action of gravity. The lower part of the second reaction zone 10 is provided with a second aeration device, the bottom of the second reaction zone is provided with a second return port, and the second return port can be communicated with the bottom of the first reaction zone 9 through a sludge return pipe 18 and is used for periodically returning the granular sludge reacted in the second reaction zone 10 to the first reaction zone 9. The second adjustable baffle 62 and the third adjustable baffle 63 can be respectively communicated with the second channel, and the granular sludge trapped in the first reaction zone 9 is sent into the sludge storage device 7 positioned outside the reactor main body through the second channel. The fourth adjustable baffle 64 can be communicated with the third channel when opened, and the granular sludge intercepted in the first reaction zone 9 is sent into the third reaction zone 11 through the third channel. The lower part of the third reaction zone 11 is provided with a stirring device, the bottom of the third reaction zone is provided with a first return opening, and the first return opening can be communicated with the bottom of the first reaction zone 9 through a sludge return pipe 18 and is used for periodically returning the granular sludge reacted in the third reaction zone 11 to the first reaction zone 9.
In practical application, in order to better control the opening and closing states of the first adjustable baffle 61, the second adjustable baffle 62, the third adjustable baffle 63 and the fourth adjustable baffle 64, the first adjustable baffle 61, the second adjustable baffle 62, the third adjustable baffle 63 and the fourth adjustable baffle 64 may be connected to the baffle adjustment controller 14 at the top of the reactor main body, and the baffle adjustment controller 14 is used to control the opening and closing states of the baffles. The outer wall surface of the reactor main body may be provided with a water bath device 12 for heating, and the water bath device 12 may be a heating device such as a water bath jacket provided outside the reactor main body. In order to better detect the state of sludge particles in the first reaction zone 9 and further determine the process steps of opening each baffle, refluxing and the like, an automatic online monitoring sensor 8 for measuring the sedimentation rate of the granular sludge can be arranged in the first reaction zone 9, the required sedimentation time is calculated by combining the measured sedimentation rate of the granular sludge with a stokes formula, and the particle size of the aerobic granular sludge is further determined. The valves in the reactor body and the power plant are externally connected to a time relay 13 to control the operation cycle of the plant. The joints of the second reaction zone 10 and the third reaction zone 11 and the sludge return pipe 18 are respectively provided with a valve for controlling the opening and closing of the passages.
The method for enhancing the aerobic granular sludge reaction by using the aerobic granular sludge system device comprises the following specific steps:
the pollutants to be treated and the aerobic granular sludge are put into the first reaction zone 9 together, and meanwhile, the nutrient medium is led into the first reaction zone 9 through the water inlet 3, so that the aerobic granular sludge in the first reaction zone 9 reacts with the pollutants.
And calculating the required settling time by combining a Stokes formula according to the settling rate of the granular sludge in the first reaction zone 9, and further determining the particle size of the granular sludge in the first reaction zone 9. Because the sludge in the first reaction zone 9 can be gradually layered in the natural sedimentation process, the opening time of each baffle and which baffle is opened can be selected according to the particle size of the granular sludge in the first reaction zone 9, so that the granular sludge with the target particle size can be separated from the first reaction zone 9. When the baffles are opened, one or more baffles can be opened according to the requirement, which is determined according to the running state of the device. The separated granular sludge with different grain diameters can be selectively discharged, collected and introduced into the second reaction zone 10 or the third reaction zone 11.
Wherein the second reaction area 10 is used for treating floc granular sludge with the particle size of less than 200 μm, the floc granular sludge in the second reaction area 10 is further cultured and acclimated by a second aeration device at the lower part, and after granulation, the granular sludge with the particle size of more than 200 μm is periodically added into the first reaction area 9 again through a bottom sludge return pipe 18 according to the optimal operation condition of the reactor main body and the pollutant removal efficiency thereof.
The third reaction zone 11 is used for treating aged granular sludge with a particle size of more than 2mm, the aged granular sludge in the third reaction zone 11 is ground and crushed by a stirring device at the lower part, and after the aged granular sludge is continuously cultured into new aerobic granular sludge, the aged granular sludge with a particle size of less than 2mm is periodically added into the first reaction zone 9 again through the bottom sludge return pipe 18 according to the optimal operation condition of the reactor main body and the pollutant removal efficiency of the reactor main body. So as to realize the cyclic utilization of the sludge and ensure that the granular sludge in the first reaction zone 9 is in the optimal state for treating pollutants for a long time.
In practical application, in order to realize automatic control, the water inlet pump 2, the air pump 4, the aeration device 5, the automatic on-line monitoring sensor 8, the water bath device 12, the baffle plate adjusting controller 14, the electromagnetic valve 16 and other equipment can be connected with the time relay 13, the peristaltic pump is controlled by the time relay to inject the water into the device through the water inlet, and the air pump is controlled to aerate the device and discharge water through the electromagnetic valve so as to achieve culture and acclimation of aerobic granular sludge. And a time relay is adopted to control the aerobic granular sludge strengthening device to periodically run in a sequencing batch mode.
The invention realizes the selective sludge discharge and long-term stable operation of the aerobic granular sludge system through particle size separation and sludge circulation, has the advantages of low energy consumption, strong operability, good stability and the like, and improves the utilization efficiency of device resource and energy while maintaining the long-term high-efficiency treatment of pollutants.
The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the invention.
Claims (10)
1. An aerobic granular sludge system device based on particle size sorting and sludge circulation is characterized by comprising a reactor main body with a hollow cavity, wherein a first reaction zone (9), a second reaction zone (10) and a third reaction zone (11) which are independent are coaxially sleeved in the cavity from inside to outside; a first aeration device (5) is arranged at the lower part of the first reaction zone (9), a water inlet (3) is formed at the bottom, and a water outlet (15) is formed in the side wall; a second aeration device is arranged at the lower part of the second reaction zone (10), a stirring device is arranged at the lower part of the third reaction zone (11), and the bottoms of the second reaction zone (10) and the third reaction zone (11) can be communicated with the bottom of the first reaction zone (9) through a sludge return pipe (18);
a first adjustable baffle (61), a second adjustable baffle (62), a third adjustable baffle (63) and a fourth adjustable baffle (64) are arranged in the first reaction zone (9) at intervals from top to bottom; the first adjustable baffle (61), the second adjustable baffle (62), the third adjustable baffle (63) and the fourth adjustable baffle (64) have the same structure and are umbrella-shaped structures which can be opened and closed independently; when the first adjustable baffle (61), the second adjustable baffle (62), the third adjustable baffle (63) and the fourth adjustable baffle (64) are closed, the umbrella surfaces of the first adjustable baffle, the second adjustable baffle, the third adjustable baffle and the fourth adjustable baffle are in a vertical state, and the sedimentation of sludge particles cannot be influenced; when the first adjustable baffle (61), the second adjustable baffle (62), the third adjustable baffle (63) and the fourth adjustable baffle (64) are opened, the umbrella covers are in a state of opening and inclining downwards, and the cross section of the first reaction area (9) can be completely covered; the first reaction zone (9) is provided with a first channel which can be communicated with the second reaction zone (10), a second channel which can be communicated with the outside and a third channel which can be communicated with the third reaction zone (11); when the first adjustable baffle (61) is opened, the first adjustable baffle can be communicated with the first channel, and granular sludge intercepted from the first reaction zone (9) is conveyed into the second reaction zone (10) through the first channel; the second adjustable baffle (62) and the third adjustable baffle (63) can be respectively communicated with the second channel, and the granular sludge intercepted in the first reaction zone (9) is sent into a sludge storage device (7) positioned outside the reactor main body through the second channel; when the fourth adjustable baffle plate (64) is opened, the fourth adjustable baffle plate can be communicated with the third channel, and the granular sludge intercepted in the first reaction zone (9) is sent into the third reaction zone (11) through the third channel.
2. An aerobic granular sludge system based on size sorting and sludge circulation as claimed in claim 1 wherein the water inlet (3) is connected to the first water storage means (1) through a pipe with a water inlet pump (2).
3. The aerobic granular sludge system device based on size sorting and sludge circulation as claimed in claim 1, wherein the water outlet (15) is provided at 1/2 of the effective height of the first reaction zone (9) and is communicated with the second water storage device (17) located outside the reactor body through a pipeline provided with an electromagnetic valve (16).
4. The aerobic granular sludge system device based on size separation and sludge circulation as claimed in claim 1, wherein the first adjustable baffle plate (61), the second adjustable baffle plate (62), the third adjustable baffle plate (63) and the fourth adjustable baffle plate (64) are all connected with a baffle plate adjusting controller (14) at the top of the reactor main body, and the baffle plate adjusting controller (14) is used for controlling the opening and closing states of the baffle plates.
5. The aerobic granular sludge system device based on grain size separation and sludge circulation as claimed in claim 1, wherein the first aeration device (5) is connected with an air pump (4) located outside the reactor body through a pipeline.
6. The aerobic granular sludge system device based on grain size separation and sludge circulation as claimed in claim 1, wherein the outer wall surface of the reactor main body is further provided with a water bath device (12) for heating.
7. The aerobic granular sludge system based on size separation and sludge circulation as claimed in claim 1, wherein the first reaction zone (9) is provided with an automatic on-line monitoring type sensor (8) for measuring the sedimentation rate of the granular sludge.
8. The aerobic granular sludge system device based on size separation and sludge circulation as claimed in claim 1, wherein the valve and power device in the reactor body are externally connected with a time relay (13) to control the operation period of the device.
9. The aerobic granular sludge system device based on grain size separation and sludge circulation as claimed in claim 1, wherein the second reaction zone (10) and the third reaction zone (11) are respectively provided with valves for controlling the opening and closing of the passage at the connection part of the sludge return pipe (18).
10. A method for enhancing aerobic granular sludge reaction by using the aerobic granular sludge system device of any one of claims 1 to 9, which is characterized by comprising the following steps:
putting the pollutant to be treated and aerobic granular sludge into a first reaction zone (9), and simultaneously introducing a nutrient medium into the first reaction zone (9) through a water inlet (3) to enable the aerobic granular sludge in the first reaction zone (9) to carry out reaction treatment on the pollutant; according to the sedimentation rate of the granular sludge in the first reaction zone (9), determining the particle size of the granular sludge in the first reaction zone (9), and selectively opening a first adjustable baffle (61), a second adjustable baffle (62), a third adjustable baffle (63) and a fourth adjustable baffle (64) to separate the granular sludge with different particle sizes, and selectively discharging, collecting and introducing the granular sludge into the second reaction zone (10) or the third reaction zone (11);
the second reaction area (10) is used for treating floc granular sludge with the particle size of less than 200 mu m, the floc granular sludge in the second reaction area (10) is further cultured and acclimated by a second aeration device at the lower part, and after granulation, the granular sludge with the particle size of more than 200 mu m is periodically added into the first reaction area (9) again through a bottom sludge return pipe (18) according to the optimal operation condition of the reactor main body and the pollutant removal efficiency thereof; the third reaction zone (11) is used for treating aged granular sludge with the particle size of more than 2mm, the aged granular sludge in the third reaction zone (11) is polished and crushed by a stirring device at the lower part, and after cultivation, the granular sludge with the particle size of less than 2mm is periodically added into the first reaction zone (9) again through a bottom sludge return pipe (18) according to the optimal operation condition of the reactor main body and the pollutant removal efficiency thereof; so as to realize the recycling of the sludge and ensure that the granular sludge in the first reaction zone (9) is in an optimal state for treating pollutants for a long time.
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| CN105129975A (en) * | 2015-09-09 | 2015-12-09 | 浙江省城乡规划设计研究院 | Built-in screen type aerobic granular sludge reactor and sewage treatment method thereof |
| CN108249559A (en) * | 2018-02-07 | 2018-07-06 | 北京工业大学 | The culture operation method of the continuous-flow aerobic granular sludge of sanitary sewage is handled under a kind of room temperature |
| CN109626576A (en) * | 2019-02-02 | 2019-04-16 | 重庆大学 | Nine palace integral anaerobics-aerobic particle mud strengthening and processing device and its method |
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