CN115677044B - Sewage water distribution control method and system - Google Patents
Sewage water distribution control method and system Download PDFInfo
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- CN115677044B CN115677044B CN202211255980.0A CN202211255980A CN115677044B CN 115677044 B CN115677044 B CN 115677044B CN 202211255980 A CN202211255980 A CN 202211255980A CN 115677044 B CN115677044 B CN 115677044B
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Abstract
The invention provides a sewage water distribution control method and a system, which are applied to a sewage water distribution control system, wherein the sewage water distribution control system comprises a water distribution channel, a biochemical pond connected with the water distribution channel, a water distribution well and at least one secondary sedimentation tank, and the method comprises the following steps: acquiring ammonia nitrogen concentration and reflux quantity of a biochemical tank; obtaining the water inflow of the biochemical pool according to the ammonia nitrogen concentration and the reflux quantity; according to the water inflow of the biochemical pond and a preset gate opening adjustment rule, adjusting the opening of a water inlet gate of the water distribution channel; and controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening degree of the water inlet gate. The scheme of the invention can realize uniform water distribution of the biochemical tank.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage distribution control method and a sewage distribution control system.
Background
In the existing sewage treatment process, a plurality of biochemical tanks are generally arranged, and sewage is distributed to different biochemical tanks for treatment after pretreatment;
in the prior art, during operation, sewage enters different biochemical tanks through a water distribution channel after being pretreated, and in the water distribution process, the problem of uneven water distribution often occurs, so that the water quantity difference entering the different biochemical tanks is overlarge. The uneven water yield that gets into biochemical pond leads to partial biochemical pond load too high, has the risk of exceeding the standard, and partial biochemical pond load is too low for facility utilization is not enough, causes medicine consumption and energy consumption extravagant, and the distribution canal gets into biochemical pond through the gate, can't direct monitoring inflow, can't carry out effective regulation.
Disclosure of Invention
The invention provides a sewage water distribution control method and a sewage water distribution control system, which can solve the problem of uneven sewage water distribution in a biochemical tank.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a sewage water distribution control method applied to a sewage water distribution control system, the sewage water distribution control system comprising a water distribution channel, a biochemical tank connected with the water distribution channel, a water distribution well and at least one secondary sedimentation tank, the method comprising:
acquiring ammonia nitrogen concentration and reflux quantity of a biochemical tank;
obtaining the water inflow of the biochemical pool according to the ammonia nitrogen concentration and the reflux quantity;
according to the water inflow of the biochemical pond and a preset gate opening adjustment rule, adjusting the opening of a water inlet gate of the water distribution channel;
and controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening degree of the water inlet gate.
Optionally, the biochemical pool comprises: the anaerobic treatment device comprises an anaerobic tank, an anoxic tank and an aerobic tank, wherein a first reflux pump is arranged in the aerobic tank; a second reflux pump is arranged on the reflux pipeline of the secondary sedimentation tank; obtaining ammonia nitrogen concentration and reflux quantity of a biochemical tank, comprising:
the ammonia nitrogen concentrations of the water distribution channel, the anoxic tank and the aerobic tank are respectively obtained through ammonia nitrogen sensors arranged in the water distribution channel, the anoxic tank and the aerobic tank;
acquiring an internal reflux quantity according to the operation parameters of a first reflux pump arranged in the aerobic tank;
and obtaining the external reflux quantity according to the operation parameters of the second reflux pump arranged on the reflux pipeline of the secondary sedimentation tank.
Optionally, obtaining the water inflow of the biochemical pond according to the ammonia nitrogen concentration and the reflux quantity includes:
and calculating the water inflow of the biochemical tank according to the ammonia nitrogen concentration of the water distribution channel, the ammonia nitrogen concentration at the tail end of the anoxic tank, the ammonia nitrogen concentration at the tail end of the aerobic tank, the internal reflux quantity and the external reflux quantity.
Optionally, calculating the inflow of the biochemical tank according to the ammonia nitrogen concentration of the water distribution channel, the ammonia nitrogen concentration at the tail end of the anoxic tank, the ammonia nitrogen concentration at the tail end of the aerobic tank, the internal reflux quantity and the external reflux quantity, including:
according to (Q Feeding in +Q Inner part +Q Outer part )ρ Hypoxia of oxygen ＝Q Feeding in ρ Feeding in +(Q Inner part +Q Outer part )ρ Aerobic conditions Calculating the water inflow of the biochemical pool;
wherein said at least one ofThe Q is Feeding in For the water inflow of the biochemical tank, the Q Inner part For the internal reflux quantity of the biochemical pool, the Q Outer part The external reflux quantity of the biochemical pool is obtained; said ρ Aerobic conditions The rho is the ammonia nitrogen concentration at the tail end of the aerobic tank Hypoxia of oxygen For the ammonia nitrogen concentration at the end of the anoxic tank, the rho Feeding in And (5) the ammonia nitrogen concentration of the distribution channel.
Optionally, the preset gate opening adjustment rule is determined according to the following process:
setting the opening of a water inlet gate of the water distribution channel according to the historical water inflow of the biochemical pond to obtain an empirical value of the opening of the water inlet gate;
and obtaining a preset gate opening adjustment rule according to the inlet gate opening empirical value.
Optionally, adjusting the opening of the water inlet gate of the water distribution channel according to the water inflow of the biochemical tank and a preset gate opening adjustment rule includes:
when the water inflow is in the Nth threshold range, adjusting the opening of a preset gate to a target preset value;
wherein N is the total number of threshold ranges, n=1, 2,3, …, N; n is not equal to 0.
Optionally, the sewage water distribution control method further includes:
setting a water inlet proportion parameter interval according to the actual operation effect;
and optimizing the opening adjustment amplitude of the water inlet gate of the water distribution channel according to the water inlet proportion adjustment interval.
The invention also provides a sewage water distribution control system, which comprises: the biochemical pool comprises an anaerobic pool, an anoxic pool and an aerobic pool;
the water distribution channel is connected with the anaerobic tank through a water inlet gate, the anaerobic tank, the anoxic tank and the aerobic tank are arranged in parallel, at least one gate hole for sewage circulation is arranged between the anaerobic tank and the anoxic tank and between the anoxic tank and the aerobic tank, the aerobic tank is connected with the water distribution well through a water distribution pipeline, the water distribution well is connected with the secondary sedimentation tank through a water distribution pipeline, and the secondary sedimentation tank is connected with the anaerobic tank through a backflow pipeline;
wherein, the water distribution channel, the tail end of the anoxic tank and the tail end of the aerobic tank are provided with at least one ammonia nitrogen sensor; a first reflux pump is arranged in the aerobic tank, and a second reflux pump is arranged on a reflux pipeline of the secondary sedimentation tank;
obtaining the water inflow of the biochemical tank according to the ammonia nitrogen concentration and the reflux quantity of the biochemical tank;
according to the water inflow of the biochemical pond and a preset gate opening adjustment rule, adjusting the opening of a water inlet gate of the water distribution channel;
and controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening degree of the water inlet gate.
Optionally, the anaerobic tank comprises a first anaerobic tank and a second anaerobic tank which are arranged in parallel;
the first anaerobic tank is connected with a first anoxic tank and a first aerobic tank;
the second anaerobic tank is connected with a second anoxic tank and a second aerobic tank;
the first anaerobic tank and the second anaerobic tank are arranged with the water distribution channel as axisymmetric, the first anoxic tank and the second anoxic tank are arranged with the water distribution channel as axisymmetric, and the first aerobic tank and the second aerobic tank are arranged with the water distribution channel as axisymmetric.
Optionally, the water distribution channel is connected with the first anaerobic tank through a first water inlet gate, the first anaerobic tank, the first anoxic tank and the first aerobic tank are arranged in parallel, and at least one gate hole for sewage circulation is arranged between the first anaerobic tank and the first anoxic tank and between the first anoxic tank and the first aerobic tank;
the water distribution channel is connected with a second anaerobic tank through a second water inlet gate, the second anaerobic tank, a second anoxic tank and a second aerobic tank are arranged in parallel, and at least one gate hole for sewage circulation is arranged between the second anaerobic tank and the second anoxic tank and between the second anoxic tank and the second aerobic tank;
the first anaerobic tank and the second anaerobic tank are respectively connected with the water distribution well through corresponding water distribution pipes, the water distribution well is connected with at least one secondary sedimentation tank through the water distribution pipes, and at least one secondary sedimentation tank is respectively connected with the first anaerobic tank and the second anaerobic tank through a backflow pipeline.
The scheme of the invention at least comprises the following beneficial effects:
the scheme of the invention is applied to a sewage water distribution control system, the sewage water distribution control system comprises a water distribution channel, a biochemical tank connected with the water distribution channel, a water distribution well and at least one secondary sedimentation tank, and the method comprises the following steps: acquiring ammonia nitrogen concentration and reflux quantity of a biochemical tank; obtaining the water inflow of the biochemical pool according to the ammonia nitrogen concentration and the reflux quantity; according to the water inflow of the biochemical pond and a preset gate opening adjustment rule, adjusting the opening of a water inlet gate of the water distribution channel; and controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening degree of the water inlet gate. Can realize uniform water distribution of the biochemical pool.
Drawings
FIG. 1 is a schematic flow chart of a sewage distribution control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a treatment process of a sewage distribution control system according to an embodiment of the present invention;
fig. 3 is a system architecture diagram of a sewage distribution control system according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a sewage distribution control method applied to a sewage distribution control system, the sewage distribution control system including a distribution canal, a biochemical tank connected to the distribution canal, a distribution well, and at least one secondary sedimentation tank, the method comprising:
and 14, controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening degree of the water inlet gate.
Wherein, the water inlet gate can use an electric gate which can be controlled in real time; at least one ammonia nitrogen sensor can be arranged in the water distribution channel and used for detecting the concentration of the ammonia nitrogen in the water inlet of the water distribution channel.
In the embodiment of the invention, the ammonia nitrogen concentration and the reflux quantity of the biochemical pool are used for obtaining the water inflow of the biochemical pool, the opening of the water inlet gate of the water distribution channel is regulated according to the water inflow of the biochemical pool and a preset gate opening regulation rule, and the water distribution quantity from the water distribution channel to the biochemical pool is controlled according to the opening of the water inlet gate. Therefore, uniform water distribution of the biochemical tank can be realized, so that the load is balanced, and the energy is saved and the consumption is reduced.
In an alternative embodiment of the present invention, the biochemical tank includes: the anaerobic treatment device comprises an anaerobic tank, an anoxic tank and an aerobic tank, wherein a first reflux pump is arranged in the aerobic tank; a second reflux pump is arranged on the reflux pipeline of the secondary sedimentation tank; the step 11 may include:
step 111, respectively obtaining the ammonia nitrogen concentrations of the water distribution channel, the anoxic tank and the aerobic tank through ammonia nitrogen sensors arranged in the water distribution channel, the anoxic tank and the aerobic tank;
step 112, obtaining an internal reflux quantity according to the operation parameters of the first reflux pump arranged in the aerobic tank;
and step 113, obtaining the external reflux quantity according to the operation parameters of the second reflux pump arranged on the reflux pipeline of the secondary sedimentation tank.
In this embodiment, at least one ammonia nitrogen sensor may be respectively disposed at the end of the anoxic tank and the end of the aerobic tank, for detecting the ammonia nitrogen concentration at the end of the anoxic tank and the end of the aerobic tank in real time; depending on the operating parameters of the first return pump, for example: the internal reflux amount is calculated according to parameters such as power, etc., and the operation parameters of the second reflux pump can be as follows: and calculating the external reflux quantity according to parameters such as power and the like.
In yet another alternative implementation of the present invention, the step 12 may include:
and step 121, calculating the water inflow of the biochemical tank according to the ammonia nitrogen concentration of the water distribution channel, the ammonia nitrogen concentration at the tail end of the anoxic tank, the ammonia nitrogen concentration at the tail end of the aerobic tank, the internal reflux quantity and the external reflux quantity.
Specifically, the step 121 may include: step 1211, according to (Q Feeding in +Q Inner part +Q Outer part )ρ Hypoxia of oxygen ＝Q Feeding in ρ Feeding in +(Q Inner part +Q Outer part )ρ Aerobic conditions Calculating the water inflow of the biochemical pool;
wherein the Q is Feeding in For the water inflow of the biochemical tank, the Q Inner part For the internal reflux quantity of the biochemical pool, the Q Outer part The external reflux quantity of the biochemical pool is obtained; said ρ Aerobic conditions The rho is the ammonia nitrogen concentration at the tail end of the aerobic tank Hypoxia of oxygen For the ammonia nitrogen concentration at the end of the anoxic tank, the rho Feeding in And (5) the ammonia nitrogen concentration of the distribution channel.
In this embodiment, the water inflow amount of the biochemical tank, namely the anaerobic tank, the anoxic tank and the aerobic tank, can be calculated by combining the diluted ammonia nitrogen concentration (namely the ammonia nitrogen concentration at the tail end of the anoxic tank) with the water inflow ammonia nitrogen concentration of the water distribution channel, the ammonia nitrogen concentration at the tail end of the aerobic tank, the internal reflux amount and the external reflux amount.
In yet another optional embodiment of the present invention, in the step 13, the preset gate opening adjustment rule is determined according to the following procedure:
step 13-1, setting the opening of a water inlet gate of a water distribution channel according to the historical water inflow of the biochemical pond to obtain an empirical value of the opening of the water inlet gate;
and step 13-2, obtaining a preset gate opening adjustment rule according to the inlet gate opening empirical value.
In this embodiment, the empirical value of the opening of the water inlet gate may be obtained according to the historical water inflow of the biochemical tank, and the preset gate opening adjustment rule may be obtained according to the empirical value of the opening of the water inlet gate. Thus, the opening degree of the water inlet gate of the water distribution channel can be regulated according to the preset gate opening degree regulation rule.
The preset gate opening adjustment rule may include at least one of the following:
when the water inflow is in a threshold range, increasing or decreasing a preset gate opening;
the anaerobic tank comprises a first biochemical tank and a second biochemical tank which are arranged in parallel, and the first biochemical tank comprises: the device comprises a first anaerobic tank, a first anoxic tank and a first aerobic tank, wherein the first anoxic tank and the first aerobic tank are connected with the first anaerobic tank; the second biochemical tank includes: the second anaerobic tank, the second anoxic tank and the second aerobic tank are connected with the second anaerobic tank; when the ratio of the water inflow of the first biochemical tank to the water inflow of the second biochemical tank is within a threshold range, the opening of the first preset gate is increased while the opening of the second preset gate is reduced, or the opening of the first preset gate is reduced while the opening of the second preset gate is increased, or the opening of the first preset gate is increased while the opening of the second preset gate is controlled to be unchanged, or the opening of the first preset gate is controlled to be unchanged while the opening of the second preset gate is controlled to be increased; the first preset gate is a gate of the first biochemical pool, and the second preset gate is a gate of the second biochemical pool;
setting an opening adjustment time interval of the water inlet gate;
wherein, the setting of the opening adjustment time interval of the water inlet gate can be determined according to the following procedures:
obtaining hydraulic retention time by dividing the tank volume of the biochemical tank by the water inflow of the biochemical tank and adding the reflux quantity of the biochemical tank;
setting the opening adjustment time interval of the water inlet gate to be larger than or equal to the hydraulic retention time.
When concrete implementation, can be according to the actual hydraulic power dwell time in anaerobic tank and oxygen deficiency pond, set up aperture adjustment time interval, ensure to intake and reflux liquid intensive mixing, ammonia nitrogen concentration value can effectively feed back current inflow, for example: the anaerobic tank is designed with the hydraulic retention time of 2 hours, the anoxic tank is designed with the hydraulic retention time of 4 hours, the water inflow of the biochemical tank is Q, the internal reflux amount is 3Q, the external reflux amount is Q, the actual hydraulic retention time is 1.8 hours, and then the opening adjustment time interval of the water inlet gate is 108 minutes.
In yet another optional implementation of the present invention, the step 13 may include:
step 131, when the water inflow is within the Nth threshold value range, adjusting the opening of the preset gate to a target preset value;
wherein N is the total number of threshold ranges, n=1, 2,3, …, N; n is not equal to 0.
In this embodiment, the opening of the preset gate is adjusted according to the threshold range where the water inflow of the biochemical tank or the ratio of the water inflow of the biochemical tanks at two sides of the water distribution channel is located, so as to control the water inflow and make the water distribution of the biochemical tank uniform.
It should be noted that, as shown in fig. 3, the sewage water distribution control system may include a series a and a series B, but is not limited to the series a and the series B, and the specific number of the series may be set according to actual needs, and it should be noted that, no matter how many series exist in the sewage water distribution control system, the water inflow of the biochemical tank may be controlled by the sewage water distribution control method, so as to achieve uniform water distribution of the biochemical tank.
As shown in fig. 3, in a specific implementation, the sewage distribution control system includes: a series and B series, each comprising: a water inlet gate and a biochemical pool; specifically, the biochemical pool in the A series is the first biochemical pool, and the biochemical pool in the B series is the second biochemical pool;
according to the water inflow of the biochemical tanks of the A series and the B series and the preset gate opening adjustment rule of the water inlet gate, the opening of the water inlet gate of the water distribution channels of the A series and the B series is adjusted, and the water inlet gate opening is specifically as shown in table 1:
| threshold range where water inflow is located | A series water inlet gate opening | B series water inlet gate opening |
| 0％～50％ | Increase by 10% | Reduced by 10% |
| 50％～80％ | Increase by 5% | Reduced by 5% |
| 80％～90％ | Increase by 2% | Reduced by 2% |
| 110％～120％ | Reduced by 2% | Increase by 2% |
| 120％～150％ | Reduced by 5% | Increase by 5% |
| 150％～200％ | Reduced by 10% | Increase by 10% |
TABLE 1
In table 1, when the threshold value range where the water inflow is located is 0% -50%, the opening degree of the water inlet gate of the A series is increased by 10%, and the opening degree of the water inlet gate of the B series is reduced by 10%;
when the water inflow is in a threshold range of 50% -80%, the opening degree of the water inlet gate of the A series is increased by 5%, and the opening degree of the water inlet gate of the B series is reduced by 5%;
when the water inflow is in a threshold range of 80% -90%, the opening degree of the water inlet gate of the A series is increased by 2%, and the opening degree of the water inlet gate of the B series is reduced by 2%;
when the threshold value range of the water inflow is 110% -120%, the opening degree of the water inlet gate of the A series is reduced by 2%, and the opening degree of the water inlet gate of the B series is increased by 2%;
when the water inflow is in a threshold range of 120% -150%, the opening degree of the water inlet gate of the A series is reduced by 5%, and the opening degree of the water inlet gate of the B series is increased by 5%;
when the water inflow is in a threshold range of 150% -200%, the opening degree of the water inlet gate of the A series is reduced by 10%, and the opening degree of the water inlet gate of the B series is increased by 10%.
In yet another alternative embodiment of the present invention, the sewage distribution control method may further include:
step 15, setting a water inlet proportion parameter interval according to the actual operation effect;
and step 16, optimizing the opening adjustment amplitude of the water inlet gate of the water distribution channel according to the water inlet proportion adjustment interval.
In this embodiment, the water inlet ratio parameter interval may be set according to the actual operation effect, and the adjustment range of the opening of the water inlet gate may be optimized, so that the water inlet amounts of different biochemical tanks are kept within a reasonable range.
In specific implementation, as shown in fig. 3, for example: the ratio of the water inflow of the biochemical pool in the A series to the water inflow of the biochemical pool in the B series is as follows: 1.5:1, at this time, the opening degree of the water inlet gate in the a-series is adjusted to be reduced by 5%, the opening degree of the water inlet gate in the B-series is adjusted to be increased by 5%, and after a preset period, the ratio of the water inlet amount of the biochemical pond in the a-series to the water inlet amount of the biochemical pond in the B-series becomes: 1:1.5, the opening degree of the water inlet gate in the A series is adjusted from 5% to 2% by reducing the opening degree of the water inlet gate in the B series, and the opening degree of the water inlet gate in the B series is adjusted from 5% to 2% by increasing the opening degree of the water inlet gate in the A series, so that the water inflow of the biochemical pond in the A series and the water inflow of the biochemical pond in the B series can be effectively controlled within a reasonable range, and uniform water distribution of the biochemical pond is realized.
As shown in fig. 2, in an alternative embodiment of the present invention, the sewage distribution control process based on the sewage distribution control system may specifically include:
sewage enters the anaerobic tank from the water distribution channel through the water inlet gate, and the sewage entering the anaerobic tank and the phosphorus-containing sludge which flows back from the secondary sedimentation tank synchronously enter the anaerobic tank together flow into the anoxic tank, wherein at least one ammonia nitrogen sensor can be arranged at the tail end of the water distribution channel and used for detecting the ammonia nitrogen concentration of the sewage entering the water distribution channel;
the method comprises the steps that a mixture of sewage and phosphorus-containing sludge flowing into an anoxic tank and a backflow mixture flowing back through the inflow aerobic tank flow into the aerobic tank together, wherein at least one ammonia nitrogen sensor can be arranged at the tail end of the anoxic tank and used for detecting the ammonia nitrogen concentration at the tail end of the anoxic tank, at least one ammonia nitrogen sensor can be arranged at the tail end of the aerobic tank and used for detecting the ammonia nitrogen concentration at the tail end of the aerobic tank, a first backflow pump is arranged at the tail end of the aerobic tank and used for obtaining internal backflow quantity, and a second backflow pump is arranged on a backflow pipeline of the secondary sedimentation tank and used for obtaining external backflow quantity;
the liquid in the aerobic tank flows into a water distribution well, the water distribution well distributes the liquid into at least one secondary sedimentation tank through a water distribution pipeline, the liquid is subjected to sedimentation treatment in the secondary sedimentation tank, a part of sludge after sedimentation flows back to the anaerobic tank through a backflow pipeline to be mixed with sewage in the anaerobic tank, and filtered water flows out from a water outlet.
In the embodiment of the invention, by the sewage distribution control method, the resistance condition of sewage entering the biochemical tank can be changed by adjusting the opening of the water inlet gate of the water distribution channel, so that the water inflow of the biochemical tank is changed, the effect of dynamically adjusting the water inflow of the biochemical tank in real time is achieved, the uniform water distribution of the biochemical tank is realized, the load is balanced, and the energy and consumption are saved.
As shown in fig. 3, an embodiment of the present invention further provides a sewage distribution control system, including a distribution canal, a biochemical tank connected to the distribution canal, a distribution well, and at least one secondary sedimentation tank, wherein the biochemical tank includes an anaerobic tank, an anoxic tank, and an aerobic tank;
the water distribution channel is connected with the anaerobic tank through a water inlet gate, the anaerobic tank, the anoxic tank and the aerobic tank are arranged in parallel, at least one gate hole for sewage circulation is arranged between the anaerobic tank and the anoxic tank and between the anoxic tank and the aerobic tank, the aerobic tank is connected with the water distribution well through a water distribution pipeline, the water distribution well is connected with the secondary sedimentation tank through a water distribution pipeline, and the secondary sedimentation tank is connected with the anaerobic tank through a backflow pipeline;
wherein, the water distribution channel, the tail end of the anoxic tank and the tail end of the aerobic tank are provided with at least one ammonia nitrogen sensor; a first reflux pump is arranged in the aerobic tank, and a second reflux pump is arranged on a reflux pipeline of the secondary sedimentation tank;
obtaining the water inflow of the biochemical tank according to the ammonia nitrogen concentration and the reflux quantity of the biochemical tank;
according to the water inflow of the biochemical pond and a preset gate opening adjustment rule, adjusting the opening of a water inlet gate of the water distribution channel;
and controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening degree of the water inlet gate.
Optionally, the anaerobic tank comprises a first anaerobic tank and a second anaerobic tank which are arranged in parallel;
the first anaerobic tank is connected with a first anoxic tank and a first aerobic tank;
the second anaerobic tank is connected with a second anoxic tank and a second aerobic tank;
the first anaerobic tank and the second anaerobic tank are arranged with the water distribution channel as axisymmetric, the first anoxic tank and the second anoxic tank are arranged with the water distribution channel as axisymmetric, and the first aerobic tank and the second aerobic tank are arranged with the water distribution channel as axisymmetric.
Optionally, the water distribution channel is connected with the first anaerobic tank through a first water inlet gate, the first anaerobic tank, the first anoxic tank and the first aerobic tank are arranged in parallel, and at least one gate hole for sewage circulation is arranged between the first anaerobic tank and the first anoxic tank and between the first anoxic tank and the first aerobic tank;
the water distribution channel is connected with a second anaerobic tank through a second water inlet gate, the second anaerobic tank, a second anoxic tank and a second aerobic tank are arranged in parallel, and at least one gate hole for sewage circulation is arranged between the second anaerobic tank and the second anoxic tank and between the second anoxic tank and the second aerobic tank;
the first anaerobic tank and the second anaerobic tank are respectively connected with the water distribution well through corresponding water distribution pipes, the water distribution well is connected with at least one secondary sedimentation tank through the water distribution pipes, and at least one secondary sedimentation tank is respectively connected with the first anaerobic tank and the second anaerobic tank through a backflow pipeline.
It should be noted that, the system is a system corresponding to the above method, and all implementation manners in the above method embodiments are applicable to the system embodiment, so that the same technical effects can be achieved.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.
Furthermore, it should be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order of description, but are not necessarily performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those of ordinary skill in the art that all or any of the steps or components of the methods and apparatus of the present invention may be implemented in hardware, firmware, software, or a combination thereof in any computing device (including processors, storage media, etc.) or network of computing devices, as would be apparent to one of ordinary skill in the art after reading this description of the invention.
The object of the invention can thus also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention can thus also be achieved by merely providing a program product containing program code for implementing said method or apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is apparent that the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. The steps of executing the series of processes may naturally be executed in chronological order in the order described, but are not necessarily executed in chronological order. Some steps may be performed in parallel or independently of each other.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (7)
1. A sewage water distribution control method, characterized by being applied to a sewage water distribution control system, the sewage water distribution control system comprising a water distribution channel, a biochemical tank connected with the water distribution channel, a water distribution well and at least one secondary sedimentation tank, the method comprising:
acquiring ammonia nitrogen concentration and reflux quantity of a biochemical tank;
obtaining the water inflow of the biochemical pool according to the ammonia nitrogen concentration and the reflux quantity;
according to the water inflow of the biochemical pond and a preset gate opening adjustment rule, adjusting the opening of a water inlet gate of the water distribution channel;
controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening of the water inlet gate;
wherein, the biochemical pond includes: the anaerobic treatment device comprises an anaerobic tank, an anoxic tank and an aerobic tank, wherein a first reflux pump is arranged in the aerobic tank; a second reflux pump is arranged on the reflux pipeline of the secondary sedimentation tank; obtaining ammonia nitrogen concentration and reflux quantity of a biochemical tank, comprising:
the ammonia nitrogen concentrations of the water distribution channel, the anoxic tank and the aerobic tank are respectively obtained through ammonia nitrogen sensors arranged in the water distribution channel, the anoxic tank and the aerobic tank;
acquiring an internal reflux quantity according to the operation parameters of a first reflux pump arranged in the aerobic tank;
obtaining the external reflux quantity according to the operation parameters of a second reflux pump arranged on a reflux pipeline of the secondary sedimentation tank;
wherein, according to the ammonia nitrogen concentration and the reflux quantity, the water inflow of the biochemical pool is obtained, comprising:
according to (Q Feeding in +Q Inner part +Q Outer part )ρ Hypoxia of oxygen ＝Q Feeding in ρ Feeding in +(Q Inner part +Q Outer part )ρ Aerobic conditions Calculating the water inflow of the biochemical pool;
wherein the Q is Feeding in For the water inflow of the biochemical tank, the Q Inner part For the internal reflux quantity of the biochemical pool, the Q Outer part The external reflux quantity of the biochemical pool is obtained; said ρ Aerobic conditions The rho is the ammonia nitrogen concentration at the tail end of the aerobic tank Hypoxia of oxygen For the ammonia nitrogen concentration at the end of the anoxic tank, the rho Feeding in And (5) the ammonia nitrogen concentration of the distribution channel.
2. The wastewater distribution control method according to claim 1, wherein the preset gate opening adjustment rule is determined according to the following procedure:
setting the opening of a water inlet gate of the water distribution channel according to the historical water inflow of the biochemical pond to obtain an empirical value of the opening of the water inlet gate;
and obtaining a preset gate opening adjustment rule according to the inlet gate opening empirical value.
3. The method according to claim 1, wherein adjusting the inlet gate opening of the distribution channel according to the inflow amount of the biochemical tank and a preset gate opening adjustment rule comprises:
when the water inflow is in the Nth threshold range, adjusting the opening of a preset gate to a target preset value;
wherein N is the total number of threshold ranges, n=1, 2,3, …, N; n is not equal to 0.
4. The wastewater distribution control method according to claim 1, characterized by further comprising:
setting a water inlet proportion parameter interval according to the actual operation effect;
and optimizing the opening adjustment amplitude of the water inlet gate of the water distribution channel according to the water inlet proportion parameter interval.
5. The sewage distribution control system comprises a water distribution channel, a biochemical pool connected with the water distribution channel, a water distribution well and at least one secondary sedimentation tank, wherein the biochemical pool comprises an anaerobic pool, an anoxic pool and an aerobic pool,
the water distribution channel is connected with the anaerobic tank through a water inlet gate, the anaerobic tank, the anoxic tank and the aerobic tank are arranged in parallel, at least one gate hole for sewage circulation is arranged between the anaerobic tank and the anoxic tank and between the anoxic tank and the aerobic tank, the aerobic tank is connected with the water distribution well through a water distribution pipeline, the water distribution well is connected with the secondary sedimentation tank through a water distribution pipeline, and the secondary sedimentation tank is connected with the anaerobic tank through a backflow pipeline;
wherein, the water distribution channel, the tail end of the anoxic tank and the tail end of the aerobic tank are provided with at least one ammonia nitrogen sensor; a first reflux pump is arranged in the aerobic tank, and a second reflux pump is arranged on a reflux pipeline of the secondary sedimentation tank;
obtaining the water inflow of the biochemical tank according to the ammonia nitrogen concentration and the reflux quantity of the biochemical tank;
according to the water inflow of the biochemical pond and a preset gate opening adjustment rule, adjusting the opening of a water inlet gate of the water distribution channel;
controlling the water distribution amount from the water distribution channel to the biochemical pool according to the opening of the water inlet gate;
wherein, the biochemical pond includes: the anaerobic treatment device comprises an anaerobic tank, an anoxic tank and an aerobic tank, wherein a first reflux pump is arranged in the aerobic tank; a second reflux pump is arranged on the reflux pipeline of the secondary sedimentation tank; obtaining ammonia nitrogen concentration and reflux quantity of a biochemical tank, comprising:
the ammonia nitrogen concentrations of the water distribution channel, the anoxic tank and the aerobic tank are respectively obtained through ammonia nitrogen sensors arranged in the water distribution channel, the anoxic tank and the aerobic tank;
acquiring an internal reflux quantity according to the operation parameters of a first reflux pump arranged in the aerobic tank;
obtaining the external reflux quantity according to the operation parameters of a second reflux pump arranged on a reflux pipeline of the secondary sedimentation tank;
wherein, according to the ammonia nitrogen concentration and the reflux quantity, the water inflow of the biochemical pool is obtained, comprising:
according to (Q Feeding in +Q Inner part +Q Outer part )ρ Hypoxia of oxygen ＝Q Feeding in ρ Feeding in +(Q Inner part +Q Outer part )ρ Aerobic conditions Calculating the water inflow of the biochemical pool;
wherein the Q is Feeding in For the water inflow of the biochemical tank, the Q Inner part For the internal reflux quantity of the biochemical pool, the Q Outer part The external reflux quantity of the biochemical pool is obtained; said ρ Aerobic conditions The rho is the ammonia nitrogen concentration at the tail end of the aerobic tank Hypoxia of oxygen For the ammonia nitrogen concentration at the end of the anoxic tank, the rho Feeding in And (5) the ammonia nitrogen concentration of the distribution channel.
6. The wastewater distribution control system of claim 5, wherein the anaerobic tank comprises a first anaerobic tank and a second anaerobic tank arranged in parallel;
the first anaerobic tank is connected with a first anoxic tank and a first aerobic tank;
the second anaerobic tank is connected with a second anoxic tank and a second aerobic tank;
the first anaerobic tank and the second anaerobic tank are arranged with the water distribution channel as axisymmetric, the first anoxic tank and the second anoxic tank are arranged with the water distribution channel as axisymmetric, and the first aerobic tank and the second aerobic tank are arranged with the water distribution channel as axisymmetric.
7. The sewage distribution control system according to claim 6, wherein the distribution channel is connected with a first anaerobic tank through a first water inlet gate, the first anaerobic tank, a first anoxic tank and a first aerobic tank are arranged in parallel, and at least one door opening for sewage circulation is arranged between the first anaerobic tank and the first anoxic tank and between the first anoxic tank and the first aerobic tank;
the water distribution channel is connected with a second anaerobic tank through a second water inlet gate, the second anaerobic tank, a second anoxic tank and a second aerobic tank are arranged in parallel, and at least one gate hole for sewage circulation is arranged between the second anaerobic tank and the second anoxic tank and between the second anoxic tank and the second aerobic tank;
the first anaerobic tank and the second anaerobic tank are respectively connected with the water distribution well through corresponding water distribution pipes, the water distribution well is connected with at least one secondary sedimentation tank through the water distribution pipes, and at least one secondary sedimentation tank is respectively connected with the first anaerobic tank and the second anaerobic tank through a backflow pipeline.
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| JP4008694B2 (en) * | 2001-11-06 | 2007-11-14 | 株式会社東芝 | Sewage treatment plant water quality controller |
| CN201990582U (en) * | 2011-03-17 | 2011-09-28 | 河海大学 | Sewage denitrification and dephosphorization device |
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| CN106007202A (en) * | 2016-07-04 | 2016-10-12 | 张芳 | Intelligent control system for sewage treatment plant key process parameters and control method of intelligent control system |
| CN109704463B (en) * | 2019-02-26 | 2024-03-26 | 沧州市供水排水集团有限公司 | Carbon optimization feeding system of AAO process sewage treatment plant |
| CN109879431B (en) * | 2019-04-19 | 2021-07-23 | 长春工程学院 | Corn starch wastewater denitrification method adopting short-cut nitrification and segmented water inlet A/O (anaerobic/oxic) process |
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