CN114323120A - Sludge discharge amount measuring method, sludge discharge amount controlling method, sludge discharge amount processing system, sludge discharge amount processing equipment and sludge discharge amount processing medium - Google Patents
Sludge discharge amount measuring method, sludge discharge amount controlling method, sludge discharge amount processing system, sludge discharge amount processing equipment and sludge discharge amount processing medium Download PDFInfo
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Abstract
The application discloses a sludge discharge amount measuring method, a control method, a processing system, equipment and a medium, wherein a sludge concentration meter is arranged near a sludge discharge port and/or in a sludge discharge pipe, a flow meter is arranged in the sludge discharge pipe, and the measuring method comprises the following steps: acquiring the sludge concentration and the sludge discharge flow in the sewage biological treatment system, wherein the sludge concentration is acquired by a sludge concentration meter, and the sludge discharge flow is acquired by a flowmeter; and calculating the sludge discharge amount of the sewage biological treatment system in a preset time interval based on the sludge concentration and the sludge discharge flow. The embodiment of the application calculates the total sludge discharge amount of each time in the biological sewage treatment system by utilizing the concentration meter and the collecting value of the flowmeter, and the real-time feedback system dynamically controls the total sludge discharge amount of the biological sewage treatment system by utilizing the measuring value in the process of quickly feeding back the change condition of biomass when the real-time feedback system discharges the total sludge in the biological sewage treatment system.
Description
Technical Field
The present application relates generally to the field of sewage treatment technology, and more particularly to methods, control methods, treatment systems, devices, and media for sludge discharge measurement.
Background
The sewage biological treatment technology mainly relates to a process of utilizing pollutants in a water body as metabolic raw materials by utilizing microorganisms and then utilizing the pollutants and removing the pollutants from the water body. In the system operation process, ensuring a certain amount of microorganisms is the key of the system operation stability. Therefore, sludge age control is critical to biochemical system stability.
In the prior art, the increment of the sludge is mainly calculated by using a kinetic formula, but the calculated value and the actual value of the formula cannot be completely matched. In addition, the significance of the parameters related in the calculation formula on the operation guidance of different water qualities and processes is different. Secondly, the sludge discharge process in the sequencing batch reactor may occur in the sedimentation process, and the sludge concentration at different depths is not uniform, so that the total amount of the discharged sludge cannot be calculated by combining the sludge discharge time and the flow rate by a sludge concentration meter in the biochemical tank during aeration. In addition, because the different depth mud concentration of mud storage pond or sludge concentration pond is different, so it is inaccurate to judge actual sludge discharge according to the mud concentration in the mud storage pond alone, calculates according to the dehydration mud water content and can receive the interference of various factors equally, and the measuring time of mud concentration and mud moisture content is longer, can't accurately reflect the actual sludge discharge volume after arranging mud every time.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies in the prior art, it is desirable to provide a sludge discharge amount measuring method, a control method, a treatment system, equipment and a medium, which can accurately measure the sludge concentration in a biological sewage treatment system by providing a sludge concentration meter at a sludge discharge port and/or a sludge discharge pipe, thereby realizing accurate calculation of the total sludge discharge amount of the system.
In a first aspect, the embodiments of the present application provide a sludge discharge amount measuring method, which is used for a biological sewage treatment system, the biological sewage treatment system at least comprises a sludge concentration meter and a flow meter, the sludge concentration meter is arranged near a sludge discharge port and/or in a sludge discharge pipe, the flow meter is arranged in the sludge discharge pipe,
the measuring method comprises the following steps:
acquiring the sludge concentration and the sludge discharge flow in the sewage biological treatment system, wherein the sludge concentration is acquired by the sludge concentration meter, and the sludge discharge flow is acquired by the flowmeter;
and calculating the sludge discharge amount of the sewage biological treatment system in a preset time interval based on the sludge concentration and the sludge discharge flow.
Optionally, in the sludge discharge amount measuring method provided in the embodiment of the present application, the sludge concentration meter includes a first sludge concentration meter and a second sludge concentration meter, the first sludge concentration meter is installed near a sludge discharge port in the biological sewage treatment system, the second sludge concentration meter is installed in a sludge discharge pipe,
then, in the preset time interval, the calculation of the sludge discharge amount of the biological sewage treatment system based on the sludge concentration and the sludge discharge flow includes:
calculating a first sludge discharge amount and sludge discharge amount based on the sludge discharge flow and the sludge concentration collected by the first sludge concentration meter;
calculating a second sludge discharge amount and sludge discharge amount based on the sludge discharge flow and the sludge concentration collected by the second sludge concentration meter;
and the sludge discharge amount of the first sludge discharge amount and the sludge discharge amount of the second sludge discharge amount are fused to obtain the sludge discharge amount of the biological sewage treatment system in the preset time interval.
Optionally, in the sludge discharge amount measuring method provided in the embodiment of the present application, based on the sludge concentration collected by the first sludge concentration meter and the sludge discharge flow, the calculated first sludge discharge amount is:
wherein s isnFor each measured sludge concentration, qnFor the sludge discharge flow rate measured each time, Δ t is a preset time interval, and m is the sludge discharge amount in the preset time interval.
Optionally, in the sludge discharge amount measuring method provided in the embodiment of the present application, based on the sludge concentration collected by the second sludge concentration meter and the sludge discharge flow, the second sludge discharge amount calculated is:
wherein s isn' sludge concentration measured at each time, qn'is the mud discharge flow rate measured each time, delta t is a preset time period, and m' is the mud discharge amount in a preset time interval.
Optionally, the sludge discharge amount measuring method provided in the embodiment of the present application fuses the first sludge discharge amount and the second sludge discharge amount to obtain the sludge discharge amount of the biological sewage treatment system within the preset time interval as follows:
M＝f(t)·m+g(t)·m'
wherein, f (t), g (t) are functions obtained by nonlinear fitting and taking the sludge discharge time t as a variable, and M is the sludge discharge amount in a preset time interval after fusion.
In a second aspect, an embodiment of the present application provides a method for controlling a sludge discharge amount, in which a sludge discharge amount at a preset time interval is measured by the method according to the first aspect, and the method includes: acquiring a preset sludge discharge total amount or a preset sludge discharge time period;
and if the current sludge discharge amount reaches the preset sludge discharge total amount, or after the sludge discharge duration reaches the preset sludge discharge time period, generating a closing instruction, wherein the closing instruction is used for indicating to close the sludge discharge device in the sewage biological treatment system.
In a third aspect, embodiments of the present application further provide a biological wastewater treatment system, in which the sludge discharge amount at preset time intervals is calculated by using the measurement method according to the first aspect, the system comprising:
the device comprises a biochemical reaction tank, a sludge storage tank, a sludge discharge device, a sludge discharge pipe, an upper computer, at least one sludge concentration meter and a flowmeter, wherein the sludge discharge device is arranged in the reaction tank and used for discharging sludge to the sludge discharge pipe;
the upper computer is used for receiving the sludge concentration and the sludge discharge flow, and calculating the total sludge discharge amount of the sewage biological treatment system in a preset time interval based on the sludge concentration and the sludge discharge flow.
Optionally, the biological sewage treatment system that this application embodiment provided, this sludge concentration meter includes first sludge concentration meter and second sludge concentration meter, and this first sludge concentration meter is installed near the mud discharging port in this biological sewage treatment system, and this second sludge concentration meter is installed in this mud discharging pipe.
Optionally, the biological treatment system of sewage that this application embodiment provided still includes reducing slow flow device, and this reducing slow flow device installs on this sludge discharge pipe.
In a fourth aspect, embodiments of the present application provide an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor is configured to implement the method according to the first aspect when executing the program.
In a fifth aspect, embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, the computer program being configured to implement the method according to the first aspect.
In summary, the method for measuring the amount of sludge discharged, the method for controlling the same, the processing system, the device and the medium provided by the embodiments of the present application, by arranging a concentration meter for collecting the sludge concentration near a sludge discharge port and/or in a sludge discharge pipe of the sewage biological treatment system, a flow meter for collecting the flow of the mixed liquid is arranged in the sludge discharge pipe, then the total sludge discharge amount of the sewage biological treatment system at each time can be calculated by utilizing the concentration meter and the collection value of the flow meter, the accurate detection of the residual sludge in a time period is realized, the real-time total amount discharged by the system in the current sludge discharge process is fed back in real time, so as to quickly feed back the change condition of the biomass, so that an operator can more timely and accurately master the running condition of the system, and then the total sludge discharge amount in the biological sewage treatment system is dynamically controlled by utilizing the measured value, so that the stable and efficient operation of the biological sewage treatment system is ensured.
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Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural view of a biological wastewater treatment system according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a mud discharge amount measuring method according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of a mud discharge measurement method according to some embodiments of the present disclosure;
FIG. 4 is a schematic flow chart illustrating a method for controlling a sludge discharge amount according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a sludge discharge amount measuring device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a computer of a processing device according to an embodiment of the present application.
Description of reference numerals:
1-a biochemical reaction tank, 2-a sludge reservoir, 3-an upper computer, 5-a sludge discharge device, 6-a sludge discharge pipe, 71-a first sludge concentration meter, 72-a second sludge concentration meter, 8-a pipeline type flowmeter and 9-a variable-diameter slow flow device.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant disclosure and are not limiting of the disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It can be understood that in the biological treatment of sewage, the microorganisms are mainly used for taking the pollutants in the water body as metabolic raw materials, and then utilizing and removing the pollutants from the water body so as to complete the sewage treatment. In the process, certain microbial biomass (sludge amount) is ensured, namely the clear sludge age is the key of the stability of biochemical sewage treatment.
In the embodiment of the application, in order to calculate the sludge discharge amount efficiently, accurately, conveniently and timely, the arrangement of each sludge discharge port of the actual sewage biological treatment system is considered to be reasonable and uniform, namely, the sludge concentration near the sludge discharge port in the reaction tank is basically the same as the sludge concentration discharged in real time. Therefore, the sludge discharge port and/or the sludge discharge pipeline of the living reaction system are/is provided with a detection device to directly and accurately monitor the sludge concentration in the sewage biological treatment system, and then the total amount of sludge discharged each time is calculated by calculating the residual sludge concentration discharged in the sewage biological treatment system and the flow rate of mixed liquid, so that the sludge age is more accurately monitored, and the total amount of sludge discharge is dynamically controlled by combining the calculated sludge age, so that the stable and efficient operation of a biochemical system is ensured.
In order to better understand the measurement of the sludge discharge amount in the biochemical reaction process provided by the embodiments of the present application, the following is illustrated in detail by fig. 1 to 6.
Fig. 1 is a schematic structural diagram of a biological sewage treatment system provided in an embodiment of the present application, and as shown in fig. 1, the system may include:
biochemical reaction pond 1, mud cistern 2, host computer 3, row's mud device 5, mud pipe 6, densimeter and pipeline formula flowmeter 8.
The biochemical reaction tank can be an A2O process aerobic tank or an effluent buffer zone and a sequencing batch biochemical reaction tank, and specifically comprises a CASS and a deformation process thereof, an aerobic granular sludge process and the like.
The sludge storage tank is used for storing excess sludge, and the excess sludge enters a sludge treatment working section after further sedimentation.
The mud discharging device includes but is not limited to a mud discharging weir (a ditch, a perforated pipe), a mud discharging port, a siphon or other mechanical transmission devices.
The sludge discharge device can be arranged below the liquid level during the operation of the sewage biological treatment system. For example, the vertical position of the sludge discharge device may be set to be between 50% of the effective water depth and 0.5m below the liquid surface.
The sludge discharge pipe 6 is used for communicating the biochemical reaction tank 1 and the sludge reservoir 2, so that the polluted water in the biochemical reaction tank is discharged to the sludge reservoir 2 through the sludge discharge pipe by the sludge discharge device.
The sludge discharge pipe is a common pipe used in the sewage treatment process.
The upper computer is used for receiving, storing, processing the data obtained by the concentration meter and the flowmeter, and analyzing and calculating the data to obtain the sludge discharge amount in the biochemical reaction process.
The upper computer is electrically connected with the concentration meter and the flowmeter.
The upper computer can be an electronic device with data processing capability, such as a computer. The embodiment of the present application does not limit this.
It can be understood that, in this application embodiment, in order to realize the accurate measurement of the mud volume in the sewage treatment process, its mud concentration meter sets up in mud discharging mouth or mud pipe.
Or, in order to further improve the accuracy of measurement, concentration meters can be arranged in the sludge discharge port and the sludge discharge pipe at the same time so as to fuse the measurement results of the sludge discharge port and the sludge discharge pipe.
For example, as shown in fig. 1, the concentration meter may include a probe-type sludge concentration meter 71 disposed near the sludge discharge port, and a pipe-type sludge concentration meter 72 disposed in the sludge discharge pipe.
The probe type sludge concentration meter can select an ultrasonic wave or a light wave method, and the vertical position of the probe type sludge concentration meter is positioned at the same height with the sludge discharge device from the bottom of the tank or within 1m above and below the sludge outlet of the sludge discharge device.
Preferably, the position of the sludge outlet is selected to be 0.25m above the sludge outlet; the horizontal position of the installation of the probe type sludge concentration meter is 0.2-5 m away from a sludge outlet of the sludge discharge device, and the preferable distance is 1m away from the sludge outlet.
The detection equipment of the pipeline type sludge concentration meter is arranged on the sludge discharge pipe and used for measuring the sludge concentration of the mixed liquid in the sludge discharge pipe.
Further, among the sewage biological treatment system that this application embodiment provided, in order to alleviate the too high influence to mud concentration measurement of velocity of flow, can set up reducing unhurried current device 9 on mud pipe 3.
The reducing flow slowing device is used for expanding the pipe diameter so as to reduce the flow speed and relieve the influence of overhigh flow speed on the sludge concentration measurement, and the reducing range can be set to be 100-200% of the pipe diameter of a sludge discharge pipe on the premise of meeting the minimum use requirement of a pipeline type sludge concentration meter.
It can be understood that, with the above-described biological wastewater treatment system, the sludge concentration in the biological wastewater treatment system can be accurately measured by a meter. In the sludge discharge process, assuming that the sludge discharge ports of the sludge discharge device are reasonably and uniformly arranged, the sludge concentration near the sludge discharge ports in the reaction tank is basically the same as the sludge concentration discharged in real time.
In order to better understand the measurement process of the sludge discharge amount during the operation of the above-mentioned sewage biological treatment system, the following is described in detail with reference to fig. 2 and 3.
Fig. 2 is a method for measuring sludge discharge amount according to an embodiment of the present application, as shown in fig. 2, the method may be executed by an upper computer, and the method is applied to the above-mentioned biological sewage treatment system shown in fig. 1, and the method specifically includes:
s110, acquiring the sludge concentration near a sludge discharge port in the biological sewage treatment system and the sludge discharge flow in a sludge discharge pipe, wherein the sludge concentration is acquired by a sludge concentration meter arranged near the sludge discharge port and/or in the sludge discharge pipe, and the flow is acquired by a flow meter arranged in the sludge discharge pipe.
And S120, calculating the sludge discharge amount of the sewage biological treatment system in a preset time interval based on the sludge concentration and the sludge discharge flow.
Specifically, in the actual biochemical reaction process in the biological sewage treatment system based on fig. 1, each structure performs a corresponding function, that is, a concentration meter disposed near the sludge discharge port and/or in the sludge discharge pipe collects the sludge concentration in real time, and a flow meter disposed in the sludge discharge pipe collects the flow rate of the mixed liquid flowing through in real time and uploads the flow rate to the upper computer. After the upper computer receives the concentration and the flow uploaded by the concentration meter and the flow meter, the upper computer can calculate the sludge discharge amount according to a preset interval time period. For example, if the sludge concentration near the sludge discharge port collected by the concentration meter is s, the real-time flow rate of the mixed liquid collected by the flow meter in the sludge discharge pipeline is q, and the preset measurement period, i.e., the preset time interval is t, the total sludge discharge amount m in the preset time interval is:
in the actual operation process, the actual sludge discharge amount is calculated in an accumulation mode, namely, the sludge discharge amount is calculated in a certain measuring period due to the limitation of the response time of the instrument and the error generated in the measuring process.
It can be understood that the preset time interval is an empirically determined measurement period, and the measurement of the sludge discharge amount in the period can provide practical significance for the whole sludge treatment system.
In practice, if the data point collection interval can be set to 0-5 min, the measurement period, i.e. the predetermined time interval, can be set to 0-5 min.
For example, it is set to 30s to 1 min. The embodiment of the present application does not limit this.
For example, if the measurement time is tnThe flow rate of the mixed liquid of the sludge discharge pipe obtained in each measurement is qnThe sludge concentration near the sludge discharge port collected by the concentration meter is snThen, the total amount m of single sludge discharge can be approximated as:
if the measurement time interval is fixed, the above equation can be expressed as:
where Δ t is a preset time interval, i.e., a measurement period.
Further, in other embodiments of this application, receive various errors to influence, rely on the mud displacement that a certain instrument probably can't truly reflect the system alone, in order to realize the accurate measurement of mud displacement, can set up first mud concentration meter at the mud discharging port, simultaneously, can also set up second mud concentration meter in the pipeline.
Such as a probe-type concentration meter 71 as shown in fig. 1. And a pipe-type sludge concentration meter 72 disposed in the sludge discharge pipe 6.
In this embodiment, as shown in fig. 2, the step S120 may specifically include:
s121, calculating a first sludge discharge amount in a preset time interval based on the sludge discharge flow and the sludge concentration collected by the first sludge concentration meter;
s122, calculating a second sludge discharge amount in a preset time interval based on the sludge discharge flow and the sludge concentration collected by the second sludge concentration meter;
s123, the first sludge discharge amount and the second sludge discharge amount are fused to obtain the sludge discharge amount of the biological sewage treatment system within the preset time interval.
Specifically, the sludge concentration obtained by the upper computer comprises a first sludge concentration q collected by a first concentration meter, and a second sludge concentration meter and a collected second sludge concentration q'.
The calculation of the sludge discharge amount for the first sludge concentration meter, such as the value collected by the probe-type concentration meter 71, may be as shown in the above equation (3).
Correspondingly, for the pipeline type sludge concentration meter, in a preset time interval, the total sludge discharge amount m' measured by the pipeline type sludge concentration meter is as follows:
further, after the sludge discharge amount in a preset time interval is calculated according to the concentration collected by each concentration meter, the measured values of the two sludge discharge amounts can be fused according to actual conditions.
For example, the coefficients of the two sludge discharge amounts may be determined by a non-linear fitting processing manner, which may specifically be expressed as follows:
M＝f(t)·m+g(t)·m' (5)
wherein M is the sludge discharge amount in a preset time interval after fusion, and f (t), g (t) are functions taking the sludge discharge time t as a variable and are obtained through nonlinear fitting or a constant and are obtained through checking the water content of the dehydrated sludge.
In the embodiment of the application, consider that near mud concentration and the real-time exhaust mud concentration of mud discharge port are the same basically, through at least near the mud discharge port at sewage biological treatment system set up the concentration meter of gathering mud concentration, and set up the flowmeter of gathering mixed liquid flow in the mud pipe, then can utilize concentration meter to take into account the collection value of flowmeter, calculate the row's mud total amount at every turn in sewage biological treatment system, the accurate detection of mud surplus in the time quantum has been realized, can real-time feedback system be in the real-time total amount of discharging when time row's mud in-process, can feed back the change condition of biomass fast, make operating personnel can more in time accurately grasp the operational aspect of system, the steady operation of sewage biological treatment system has been ensured.
Further, by the method for detecting the total sludge discharge amount in the embodiment, the total sludge discharge amount in the biological sewage treatment system can be dynamically controlled, so that the stable and efficient operation of the biochemical system is ensured. Specifically, an embodiment of the present application further provides a method for controlling a sludge discharge amount, as shown in fig. 4, the method may further include:
s130, acquiring a preset sludge discharge total amount or a sludge discharge time period of sludge discharge;
and S140, if the current sludge discharge amount reaches the preset sludge discharge total amount or when the sludge discharge duration reaches the preset time period, generating a closing instruction, wherein the closing instruction is used for indicating to close the sludge discharge device.
Specifically, in practice, the sludge discharge amount calculated by the interval between the preset intervals in the above embodiment may be used to realize the control of the sludge discharge amount. The method can be realized by using time parameters or sludge discharge total quantity parameters.
In practice, the automatic control system running in the upper computer is used for an operator to select a sludge discharge mode, and the selection can comprise time control and total amount control.
For example, for time control, i.e. controlling sludge discharge through a preset sludge discharge time, the sludge discharge amount is measured within the set sludge discharge time. That is, when the sludge discharge time is set for control, if the sludge discharge time period is set to be half a day or three hours, the operation condition of the sludge biological treatment system can be grasped in real time through the measurement of the sludge discharge amount within the preset time interval disclosed in the above embodiment, the system parameters can be adjusted in time, and the stability of the sludge discharge amount can be ensured.
For example, the total amount control may be performed by setting a total sludge discharge amount in advance, and determining the end point of the sludge discharge process by the system according to the total sludge discharge amount obtained in real time after the sludge discharge is started. Similarly, the operation condition of the sludge biological treatment system can be mastered in real time through the measurement of the sludge discharge amount within the preset time interval disclosed by the embodiment, the system parameters can be adjusted in time, and the stability of the sludge discharge amount is ensured.
Specifically, when the system moves to needs row mud, row mud device begins row mud, and the mixed liquid among the biological sewage treatment system flows to storing up the mud pond through the mud pipe from row mud device, and probe formula mud concentration meter, mud pipe flowmeter and pipeline formula mud concentration meter begin simultaneously and carry out data acquisition to the host computer.
The upper computer can calculate the total amount of the system discharged sludge in real time according to the formula (5), and the sludge discharge is finished under the preset sludge discharge time or the preset sludge discharge amount according to the system setting, namely the upper computer generates a closing instruction when the sludge discharge amount reaches the preset sludge discharge time period or after the preset sludge discharge amount is preset, so that the sludge discharge device responds to the closing instruction, stops running and finishes the sludge discharge.
It can be understood that the method for detecting and controlling the sludge discharge amount provided by the embodiment of the application does not use a theoretical formula or the operation condition of other mechanical equipment as the condition for calculation, control and judgment, but directly uses the measured values of the sludge concentration obtained from two points closest to the actual discharged sludge concentration as the basis for calculation, thereby more accurately reflecting the actual condition of the sludge discharge process of the system. The selected sludge concentration determination point positions have certain representativeness, and calculation results can be corrected to a certain degree through a fitting function according to actual measurement values, so that the measurement accuracy is improved.
In addition, the mud discharging amount is calculated by adopting an interpolation method in the embodiment of the application, the problem that integral calculation cannot be used in response time of the instrument is solved, and the algorithm is simple and easy to program. And the timeliness is high, the sludge discharge amount can be calculated after the sludge discharge is finished every time, and the real-time monitoring and feedback control can be realized.
It can also be understood that the sewage biological treatment system provided by the embodiment of the application uses related equipment instruments which belong to common sewage treatment equipment, and has the advantages of wide source, moderate price, convenient installation and maintenance and suitability for various types of sewage treatment plants.
In addition, the related algorithm is simple, real-time monitoring and effective control of sludge discharge can be realized without greatly modifying an automatic control system, and the potential of participating in feedback regulation in the operation process and further realizing improvement of the operation level is also provided.
On the other hand, the embodiment of the application also provides a mud discharging amount detection device, as shown in fig. 5.
Fig. 5 is a schematic structural diagram of a device for detecting sludge discharge in a biological sewage treatment system according to an embodiment of the present application, and as shown in the drawing, the device 400 is used in a biological sewage treatment system, the biological sewage treatment system at least includes a sludge concentration meter and a flow meter, the sludge concentration meter is installed near a sludge discharge port and/or in a sludge discharge pipe, the flow meter is installed in the sludge discharge pipe, and the device includes:
a first obtaining module 410, configured to obtain a sludge concentration and a sludge discharge flow rate in the biological sewage treatment system, where the sludge concentration is collected by the sludge concentration meter, and the sludge discharge flow rate is collected by the flow meter;
and the calculating module 420 is configured to calculate a sludge discharge amount of the biological sewage treatment system within a preset time interval based on the sludge concentration and the sludge discharge flow.
Optionally, the sludge discharge amount measuring device provided in the embodiment of the present application, the sludge concentration meter includes a first sludge concentration meter and a second sludge concentration meter, the first sludge concentration meter is installed near a sludge discharge port in the biological sewage treatment system, the second sludge concentration meter is installed in a sludge discharge pipe,
the calculation module specifically includes:
the first calculation unit 421 is configured to calculate a first sludge discharge amount within a preset time interval based on the sludge discharge flow rate and the sludge concentration collected by the first sludge concentration meter;
the second calculating unit 422 is used for calculating a second sludge discharge amount in a preset time interval based on the sludge discharge flow and the sludge concentration collected by the second sludge concentration meter;
and the fusion unit 423 is used for fusing the first sludge discharge amount and the second sludge discharge amount to obtain the sludge discharge amount of the biological sewage treatment system within the preset time interval.
Optionally, the mud discharge amount measuring device that this application embodiment provided, based on the mud concentration and this mud discharge flow that this first mud concentration meter gathered, the first mud discharge amount in the preset time quantum of calculation is:
wherein s isnFor each measured sludge concentration, qnFor the sludge discharge flow rate measured each time, Δ t is a preset time interval, and m is the sludge discharge amount in the preset time interval.
Optionally, the mud discharge amount measuring device that this application embodiment provided calculates the second mud discharge amount in the preset time interval based on the mud concentration and this mud discharge flow that this second mud concentration meter gathered and is:
wherein s isnFor each measured sludge concentration, qnFor the sludge discharge flow rate measured each time, Δ t is a preset time interval, and m is the sludge discharge amount in the preset time interval.
Optionally, the mud discharge amount measuring device that this application embodiment provided fuses this first mud discharge amount and this second mud discharge amount, and the mud discharge amount that obtains this sewage biological treatment system in this preset time quantum is:
M＝f(t)·m+g(t)·m'
wherein, f (t), g (t) are functions obtained by nonlinear fitting and taking the sludge discharge time t as a variable, and M is the sludge discharge amount in a preset time interval after fusion.
Further comprising:
on the other hand, this application embodiment still provides a row's mud volume controlling means, and the device includes:
a second obtaining module 430, configured to obtain a preset total sludge discharge amount or a preset sludge discharge time period;
and the control module 440 is configured to generate a closing instruction if the current sludge discharge amount reaches the preset sludge discharge total amount, or after the sludge discharge duration reaches the preset sludge discharge time period, where the closing instruction is used to instruct to close the sludge discharge device in the biological sewage treatment system.
On the other hand, the embodiment of the present application also provides an electronic device, such as a host computer in the wastewater biological treatment system shown in fig. 1, the electronic device includes a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor is used for implementing the method as described above when executing the program.
Referring now to fig. 6, fig. 6 is a schematic diagram of a computer electronic device of a processing device according to an embodiment of the present application.
As shown in fig. 6, the computer electronic device 500 includes a Central Processing Unit (CPU)501 that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage section 502 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for the operation of the electronic apparatus 500 are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. An input/output (I/O) port 505 is also connected to bus 504.
The following components are connected to the I/O port 505: an input portion 506 including a keyboard, a mouse, and the like; an output portion 507 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network port card such as a LAN card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O port 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.
In particular, according to embodiments of the application, the processes described above with reference to the flow diagrams may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a machine-readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 509, and/or installed from the removable medium 511. The above-described functions defined in the electronic device of the present application are executed when the computer program is executed by the Central Processing Unit (CPU) 501.
It should be noted that the computer readable medium shown in the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic device, apparatus, or device, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor, or any combination thereof. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution electronic device, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution electronic device, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of processing devices, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based electronic devices that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules described in the embodiments of the present application may be implemented by software or hardware. The described units or modules may also be provided in a processor, and may be described as: a processor, comprising: the device comprises an acquisition module and a calculation module. Where the designation of such units or modules does not in some cases constitute a limitation of the unit or module itself, for example, the capture module may also be described as "for capturing the sludge concentration in the wastewater biological treatment system, which is captured by the sludge concentration meter, and the sludge discharge flow rate, which is captured by the flow meter".
As another aspect, the present application also provides a computer-readable storage medium, which may be included in the electronic device described in the above embodiments; or may be separate and not incorporated into the electronic device. The above-mentioned computer-readable storage medium stores one or more programs which, when executed by one or more processors, perform the sludge discharge amount measuring method described in the present application:
the method is used for a sewage biological treatment system, the biochemical system at least comprises a sludge concentration meter and a flowmeter, the sludge concentration meter is arranged near a sludge discharge port and/or in a sludge discharge pipe, the flowmeter is arranged in the sludge discharge pipe,
the measuring method comprises the following steps:
acquiring the sludge concentration and the sludge discharge flow in the sewage biological treatment system, wherein the sludge concentration is acquired by the sludge concentration meter, and the sludge discharge flow is acquired by the flowmeter;
and calculating the sludge discharge amount of the sewage biological treatment system within a preset time interval based on the sludge concentration and the sludge discharge flow.
In summary, the mud discharge amount measuring method, processing system, device and medium provided by the embodiments of the present application, by arranging a concentration meter for collecting the sludge concentration near a sludge discharge port and/or in a sludge discharge pipe of the sewage biological treatment system, a flow meter for collecting the flow of the mixed liquid is arranged in the sludge discharge pipe, then the total sludge discharge amount of the sewage biological treatment system at each time can be calculated by utilizing the concentration meter and the collection value of the flow meter, the accurate detection of the residual sludge in a time period is realized, the real-time total amount discharged by the system in the current sludge discharge process is fed back in real time, so as to quickly feed back the change condition of the biomass, so that an operator can more timely and accurately master the running condition of the system, and then the total sludge discharge amount in the biological sewage treatment system is dynamically controlled by utilizing the measured value, so that the stable and efficient operation of the biological sewage treatment system is ensured.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (11)
1. A method for measuring sludge discharge amount is characterized in that the method is used for a biological sewage treatment system, the biological sewage treatment system at least comprises a sludge concentration meter and a flowmeter, the sludge concentration meter is arranged near a sludge discharge port of the biological sewage treatment system and/or in a sludge discharge pipe, the flowmeter is arranged in the sludge discharge pipe,
the measuring method comprises the following steps:
acquiring the sludge concentration and the sludge discharge flow in the sewage biological treatment system, wherein the sludge concentration is acquired by the sludge concentration meter, and the sludge discharge flow is acquired by the flowmeter;
and calculating the sludge discharge amount of the sewage biological treatment system within a preset time interval based on the sludge concentration and the sludge discharge flow.
2. The sludge discharge amount measuring method according to claim 1, wherein the sludge concentration meter includes a first sludge concentration meter installed in the vicinity of a sludge discharge port in the wastewater biological treatment system and a second sludge concentration meter installed in a sludge discharge pipe,
calculating the sludge discharge amount of the sewage biological treatment system in a preset time interval based on the sludge concentration and the sludge discharge flow, wherein the sludge discharge amount comprises:
calculating a first sludge discharge amount based on the sludge discharge flow and the sludge concentration collected by the first sludge concentration meter;
calculating a second sludge discharge amount based on the sludge discharge flow and the sludge concentration collected by the second sludge concentration meter;
and fusing the first sludge discharge amount and the second sludge discharge amount to obtain the sludge discharge amount of the biological sewage treatment system within the preset time interval.
3. The method according to claim 2, wherein the first sludge discharge amount is calculated based on the sludge concentration collected by the first sludge concentration meter and the sludge discharge flow rate as follows:
wherein s isnFor each measured sludge concentration, qnFor the sludge discharge flow rate measured each time, Δ t is a preset time interval, and m is the sludge discharge amount in the preset time interval.
4. The method of measuring the amount of sludge discharge according to claim 3, wherein the second amount of sludge discharge calculated based on the concentration of sludge collected by the second sludge concentration meter and the flow rate of sludge discharge is:
wherein s isn' sludge concentration measured at each time, qn'is the mud discharge flow rate measured each time, delta t is a preset time period, and m' is the mud discharge amount in a preset time interval.
5. The method for measuring the sludge discharge amount according to claim 4, wherein the first sludge discharge amount and the second sludge discharge amount are fused to obtain the sludge discharge amount of the biological sewage treatment system in the preset time interval as follows:
M＝f(t)·m+g(t)·m'
wherein, f (t), g (t) are functions obtained by nonlinear fitting and taking the sludge discharge time t as a variable, and M is the sludge discharge amount in a preset time interval after fusion.
6. A method for controlling a sludge discharge amount, in which the sludge discharge amount at a predetermined time interval is measured by the method according to any one of claims 1 to 5, comprising:
acquiring a preset sludge discharge total amount or a preset sludge discharge time period;
and if the current sludge discharge amount reaches the preset sludge discharge total amount, or after the sludge discharge duration reaches the preset sludge discharge time period, generating a closing instruction, wherein the closing instruction is used for indicating to close the sludge discharge device in the biological sewage treatment system.
7. A biological wastewater treatment system, characterized in that the amount of sludge discharged at predetermined time intervals in the system is measured by the method according to any one of claims 1 to 5, the system comprising:
the system comprises a biochemical reaction tank, a sludge storage tank, a sludge discharge device, a sludge discharge pipe, an upper computer, at least one sludge concentration meter and a flowmeter, wherein the sludge discharge device is arranged in the reaction tank and used for discharging sludge to the sludge discharge pipe;
the upper computer is used for receiving the sludge concentration and the sludge discharge flow, and calculating the total sludge discharge amount of the sewage biological treatment system in a preset time interval based on the sludge concentration and the sludge discharge flow.
8. The biological wastewater treatment system of claim 7, wherein the sludge concentration meter comprises a first sludge concentration meter mounted near a sludge discharge port in the biological wastewater treatment system and a second sludge concentration meter mounted in the sludge discharge pipe.
9. The biological wastewater treatment system according to claim 7 or 8, further comprising a variable-diameter flow slowing device mounted on the sludge discharge pipe.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor being configured to implement the method of any of claims 1-6 when executing the program.
11. A computer-readable storage medium, on which a computer program is stored, the computer program being for implementing the method according to any one of claims 1-6.
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