CN116081907A - Sludge organic-inorganic separation system and control method thereof - Google Patents
Sludge organic-inorganic separation system and control method thereof Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 316
- 238000000926 separation method Methods 0.000 title claims abstract description 148
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000012986 modification Methods 0.000 claims description 42
- 230000004048 modification Effects 0.000 claims description 42
- 230000001276 controlling effect Effects 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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Abstract
The invention discloses a sludge organic-inorganic separation system and a control method thereof, wherein a measuring unit is respectively arranged at a feed inlet of a separation unit and an organic sludge discharge outlet, the sludge feed flow and the separated organic sludge discharge flow are monitored by the measuring unit, the sludge feed flow and the separated organic sludge discharge flow are transmitted to a main control unit by a data transmission unit, and the main control unit timely feeds back signals to a regulation and control unit to regulate and control the sludge feed speed or regulate and control the organic sludge discharge outlet according to the real-time transmitted sludge feed speed and the separation working state of the separation unit, so that the intelligent monitoring and regulation of the sludge organic-inorganic separation system working state is realized, and the stability, accuracy and effect of the sludge organic-inorganic separation are improved.
Description
Technical Field
The invention belongs to the technical field of sludge treatment and automatic control, and particularly relates to a sludge organic-inorganic separation system and a control method thereof.
Background
In recent years, with the continuous improvement of urban level, the discharge of urban sewage is continuously increased, and simultaneously, the amount of sludge generated in the sewage treatment process is also continuously increased. The organic sludge separation is carried out on the sludge before the treatment such as incineration, anaerobic fermentation and the like, so that the heat value of an organic part can be effectively improved, the investment of coal co-combustion and other cost is reduced, the organic load and the capacity of anaerobic fermentation are improved, and the risk of blocking an anaerobic system by inorganic gravel in the sludge is reduced.
The cyclone is a device commonly used for separation and classification, the separation effect is not only influenced by structural parameters such as the size of the cyclone, but also the pressure during feeding is an important influencing factor, and the feeding pressure directly influences the feeding speed. It is generally considered that the cyclone has a critical optimal feed rate when it is classified, the separation effect increases with an increase in the feed rate, and after reaching the critical optimal feed rate, the continuous increase in the feed rate results in a deterioration in the separation effect.
In the actual separation operation process of the cyclone, due to various factors such as sludge property, working condition, cyclone abrasion and the like, speed fluctuation during sludge feeding can be caused to different degrees, so that the organic-inorganic separation effect of the sludge is unstable or poor. In addition, the sludge separation effect is generally calculated and judged by adopting the related indexes of drying and assay, and the problems that the detection period is long, the working state of a separation system is difficult to reflect and regulate in real time, the sludge after separation has large difference and the like exist.
Disclosure of Invention
The invention aims at solving the technical problems that in the actual operation and running process of engineering, the feeding speed of a cyclone has an important influence on the organic-inorganic separation effect of sludge, and in order to solve the problems that the feeding speed fluctuates and the sludge separation effect cannot be monitored in real time and the working state of a separation system is regulated and controlled due to the aspects of polluted sludge property, working condition, cyclone abrasion and the like, the invention provides a cyclone working state for realizing intelligent monitoring and regulation of the organic-inorganic separation of sludge, and a sludge organic-inorganic separation system and a control method thereof are provided, wherein the stability, the accuracy and the effect of the organic-inorganic separation of sludge are improved.
In order to solve the technical problems, one aspect of the present invention provides a sludge organic-inorganic separation system, which comprises a main control unit, a data transmission unit, a regulation and control unit, a sludge modification unit, a power unit, a measurement unit, a separation unit and a sludge storage unit; the main control unit is respectively connected with the data transmission unit and the regulation and control unit; the data transmission unit is connected with the measurement unit; the regulation and control unit is respectively connected with the sludge modification unit and the power unit; the measuring unit is respectively connected with the separating unit and the sludge storage unit; wherein,,
the measuring unit is used for monitoring the sludge feeding speed and flow rate of the feeding port of the separating unit, the organic sludge discharging flow rate of the overflow port of the separating unit and the sludge liquid level height in the sludge storage unit;
the data transmission unit is used for transmitting the data acquired by the measurement unit to the main control unit;
the main control unit is used for collecting, displaying and storing the data transmitted by the data transmission unit in real time, rapidly processing and judging the data according to the transmitted data, and timely sending out corresponding regulation and control instructions to the regulation and control unit;
the control unit comprises a control part and an adjusting part, and the control part is used for controlling the start and stop of the power unit and controlling the sludge modification unit to complete sludge modification; the adjusting part is used for adjusting the sludge feeding speed and flow of the feeding port of the separating unit and the organic sludge discharging flow of the overflow port of the separating unit according to the instruction sent by the main control unit so as to realize the working state adjustment of the sludge organic-inorganic separating system.
As the preferable scheme of the organic-inorganic sludge separation system, the separation unit is a cyclone, the sludge storage unit comprises an inorganic sludge storage tank and an organic sludge storage tank, a feed inlet of the separation unit is connected with the sludge modification unit, a discharge outlet of the separation unit is connected with the inorganic sludge storage tank, and an overflow outlet of the separation unit is connected with the organic sludge storage tank.
As the preferable scheme of the sludge organic-inorganic separation system, the sludge modification unit comprises a sludge modification tank with a stirrer, the sludge modification tank is provided with a pH monitor, and the sludge modification tank is connected with a dosing device.
As the preferable scheme of the sludge organic-inorganic separation system, the power unit comprises a sludge feeding pump and a sludge pumping pump, wherein the sludge feeding pump is connected with a feeding port of the sludge modification tank, and a discharging port of the sludge modification tank is connected with a feeding port of the cyclone through the sludge pumping pump; the sludge feeding pump is a screw pump.
As the preferable scheme of the sludge organic-inorganic separation system, the adjusting part comprises a variable frequency pump, a reflux device and an adjusting valve, wherein the variable frequency pump is a mud pump of a power unit, the reflux device is connected with the variable frequency pump in parallel, and the adjusting valve is connected with a pipeline of an overflow port of the separation unit, which is communicated with the organic mud storage tank.
As the preferable scheme of above-mentioned organic inorganic separation system of mud, measuring unit includes first intelligent electromagnetic flowmeter, second intelligent electromagnetic flowmeter, first radar level gauge and second radar level gauge, first intelligent electromagnetic flowmeter is connected on being close to the pipeline of feed inlet one side of separating unit, second intelligent electromagnetic flowmeter is connected on being close to the pipeline of overflow mouth one side of separating unit, first radar level gauge is connected the top of inorganic mud storage jar, the second radar level gauge is connected the top of organic mud storage jar.
As a preferable scheme of the sludge organic-inorganic separation system, the sludge organic-inorganic separation system further comprises an emergency stopping unit and an alarm unit which are respectively connected with the regulation and control unit, wherein the emergency stopping unit is used for stopping emergency when the system works at a preset feeding speed and in a preset separation flow range after the main control unit secondarily sends out a regulation and control instruction; the alarm unit is used for carrying out alarm prompt after faults and emergency stop occur.
As the preferable scheme of the sludge organic-inorganic separation system, the sludge organic-inorganic separation system further comprises a cleaning unit connected with the regulating and controlling unit, the cleaning unit is arranged at the front end of the whole sludge separation system and is connected with tap water, and the regulating and controlling unit can control the cleaning unit to clean the whole separation system according to actual working and running requirements.
Another aspect of the present invention provides a control method of the sludge organic-inorganic separation system according to the above, comprising:
monitoring the sludge feeding speed and flow of a feeding port of the separation unit, the organic sludge discharging flow of an overflow port of the separation unit and the sludge liquid level in the sludge storage unit through the measuring unit;
transmitting the data acquired by the measuring unit to the main control unit through the data transmission unit;
the data transmitted by the data transmission unit is collected, displayed and stored in real time through the main control unit, and is processed and judged rapidly according to the transmitted data, and a corresponding regulation and control instruction is sent out by the regulation and control unit in time; the parameter range set in the main control unit comprises: the system debugging stage is determined to have a sludge critical feeding speed range V1-V2, a sludge flow range Q1-Q2 under the critical feeding speed, an organic sludge discharging flow range Q3-Q4 of the separated overflow port, and a ratio K1-K2 of the separated organic sludge and the inorganic sludge determined by a laboratory;
when the feeding speed V of the sludge is less than V1, the feeding speed of the sludge entering the separation unit is increased through the regulation and control unit;
when the feeding speed V of the sludge is less than V1 and the feeding speed of the sludge entering the separation unit is improved through the regulation and control unit, when the set critical feeding speed range of the sludge still cannot be reached, transmitting a signal to the main control unit to send out a regulation and control instruction again, and if the set critical feeding speed range of the sludge still cannot be reached, warning a user that the sludge quantity and the fault problem in the sludge modification tank need to be checked;
when the feeding speed V of the sludge is more than V2, reducing the feeding speed of the sludge entering the separation unit through the regulation unit;
when the discharge flow Q of the organic sludge of the overflow port after separation is less than Q3 and the discharge flow Q1-Q of the inorganic sludge sand setting port is more than Q, the feeding speed of the sludge entering the separation unit is reduced through the regulating and controlling unit;
when the discharge flow Q of the organic sludge of the overflow port after separation is more than Q4 and the discharge flow Q2-Q of the inorganic sludge sand setting port is less than Q, the feeding speed of the sludge into the separation unit is increased and the discharge flow of the organic sludge of the overflow port is reduced through the regulating and controlling unit.
As a preferable scheme of the control method, the data measured by the measuring unit of each minute of the system is transmitted to the main control unit for recording in real time through the data transmission unit, and the data is recorded by the main control unit
Calculating the organic-inorganic ratio of the separated sludge, and detecting the organic-inorganic separation effect of the sludge in actual operation;
when the actual organic-inorganic separation ratio K of the sludge is less than K1, the excessive discharge amount of the separated organic sludge is indicated;
when the actual organic-inorganic separation ratio K of the sludge is more than K2, the inorganic sludge is excessive after separation;
on the premise that the sludge feeding speed and the discharge flow of the separated organic sludge overflow port are both in a set range, the actual organic-inorganic separation ratio of the sludge is still not in accordance with the separation ratio range determined in the laboratory, and the critical sludge feeding speed range is required to be debugged again and determined.
Compared with the prior art, the sludge organic-inorganic separation system and the control method thereof have the beneficial effects that:
the invention can monitor the sludge feeding speed and flow of the feeding port of the separation unit and the organic sludge discharging flow of the overflow port of the separation unit in real time, and provides a theoretical basis for regulating and controlling the organic sludge separation effect of the sludge by combining and comparing the sludge feeding speed and flow of the feeding port of the separation unit and the organic sludge discharging flow of the overflow port of the separation unit with data determined by debugging and laboratory results, and can quickly regulate and control the organic sludge separation effect of the sludge according to different working states of the system, thereby effectively improving the stability and the accuracy of organic-inorganic separation of the sludge. In addition, the device and the method have the advantages of simple facility, convenient operation and maintenance management and operation, high automation degree and good popularization basis for widely applying the organic-inorganic separation treatment of the sludge.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a frame diagram of a sludge organic-inorganic separation system provided by the invention;
FIG. 2 is a schematic diagram of a sludge organic-inorganic separation system according to the present invention;
fig. 3 is a control flow chart of the sludge organic-inorganic separation system provided by the invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the invention.
As shown in fig. 1 and 2, the preferred embodiment of the present invention provides a sludge organic-inorganic separation system, which includes a main control unit 10, a data transmission unit 20, a regulation unit 30, a sludge modification unit 40, a power unit 50, a measurement unit 60, a separation unit 70, and a sludge storage unit 80; the main control unit 10 is respectively connected with the data transmission unit 20 and the regulation and control unit 30; the data transmission unit 20 is connected with the measurement unit 60; the regulation and control unit 30 is respectively connected with the sludge modification unit 40 and the power unit 50; the measuring unit 60 is connected to the separating unit 70 and the sludge storing unit 80, respectively; wherein,,
the measuring unit 60 is used for monitoring the sludge feeding speed and flow rate of the feeding port 703 of the separating unit 70, the organic sludge discharging flow rate of the overflow port 702 of the separating unit 70, and the sludge liquid level height in the sludge storage unit 80;
the data transmission unit 20 is configured to transmit the data acquired by the measurement unit 60 to the main control unit 10;
the main control unit 10 is configured to collect, display and store the data transmitted by the data transmission unit 20 in real time, process and judge the data according to the transmitted data, and send corresponding control instructions to the control unit 30 in time;
the regulation and control unit 30 comprises a control part and an adjusting part, wherein the control part is used for controlling the start and stop of the power unit 50 and controlling the sludge modification unit 40 to finish sludge modification; the adjusting part is used for adjusting the sludge feeding speed and flow of the feeding port 703 of the separating unit 70 and the organic sludge discharging flow of the overflow port 702 of the separating unit 70 according to the instruction sent by the main control unit 10, so as to realize the adjustment of the working state of the sludge organic-inorganic separating system.
Illustratively, the separation unit 70 is a cyclone 701, the sludge storage unit 80 includes an inorganic sludge storage tank 801 and an organic sludge storage tank 802, a feed inlet 703 of the separation unit 70 is connected to the sludge modification unit 40, a discharge outlet of the separation unit 70 is connected to the inorganic sludge storage tank 801, and an overflow outlet 702 of the separation unit 70 is connected to the organic sludge storage tank 802.
Illustratively, the sludge modification unit 40 includes a sludge modification tank 401 with a stirrer 402, the sludge modification tank 401 being provided with a pH monitor, the sludge modification tank 401 being connected with a dosing device. In the sludge modification stage, the EPS of the sludge is destroyed by adding the modifying reagent into the sludge modification tank 401 through the dosing device, so that the viscosity of the sludge is reduced, inorganic gravel wrapped by extracellular polymer is effectively released, the sludge is stirred through the stirrer 402, the inorganic gravel among the sludge is released to the greatest extent, and the degree of organic-inorganic separation of the subsequent sludge is improved. Wherein the pH monitor is used for monitoring the reaction condition of the sludge modifier after being added.
Illustratively, the power unit 50 includes a sludge feed pump 501 and a sludge pump 502, the sludge feed pump 501 is connected with the feed inlet of the sludge modification tank 401, and the sludge feed pump 501 provides conveying power for feeding the sludge modification tank 401; the discharge port of the sludge modification tank 401 is connected with the feed port of the cyclone 701 through the sludge pump 502, and the sludge pump 502 provides conveying power for feeding the cyclone 701. In this embodiment, the sludge feed pump 501 is preferably a screw pump.
Illustratively, the adjusting part comprises a variable frequency pump 301, a reflux unit 302 and an adjusting valve 303, wherein the variable frequency pump 301 is a mud pump 502 of the power unit 50, the reflux unit 302 is connected with the variable frequency pump 301 in parallel, and the adjusting valve 303 is connected on a pipeline of an overflow port 702 of the separating unit 70 to the organic mud storage tank 802. The variable frequency pump 301 and the reflux device 302 are used for regulating and controlling the feeding speed of the sludge into the separation unit 70 (i.e. the cyclone 701), and the regulating valve 303 is used for regulating and controlling the organic sludge discharge flow of the overflow port 702 after the sludge separation.
Illustratively, the measuring unit 60 includes a first intelligent electromagnetic flowmeter 601, a second intelligent electromagnetic flowmeter 602, a first radar level gauge 603, and a second radar level gauge 604, wherein the first intelligent electromagnetic flowmeter 601 is connected to a pipeline on a side close to a feed inlet 703 of the separating unit 70, the second intelligent electromagnetic flowmeter 602 is connected to a pipeline on a side close to an overflow inlet 702 of the separating unit 70, the first radar level gauge 603 is connected to a top of the inorganic mud storage tank 801, and the second radar level gauge 604 is connected to a top of the organic mud storage tank 802. Wherein the first intelligent electromagnetic flowmeter 601 is configured to monitor a feeding speed and a feeding flow rate of the sludge into the separation unit 70 (i.e., the cyclone 701); the second intelligent electromagnetic flowmeter 602 is used for monitoring the organic sludge discharge flow of the overflow port 702 after sludge separation; the first radar level gauge 603 is configured to monitor the sludge level in the inorganic sludge storage tank 801, and transmit the sludge level to the main control unit 10 for display and recording in real time; the second radar level gauge 604 is used for monitoring the sludge level in the organic sludge storage tank 802, and transmitting the sludge level to the main control unit 10 for displaying and recording in real time.
The sludge organic-inorganic separation system further includes an emergency stop unit 110, the emergency stop unit 110 is connected to the regulation unit 30, and the emergency stop unit 110 is configured to perform emergency stop when the system fails and the main control unit 10 issues a regulation command for the second time after the system fails, and the predetermined feeding speed and the separation flow range of the system cannot be satisfied.
The sludge organic-inorganic separation system further comprises an alarm unit 100, wherein the alarm unit 100 is connected with the regulation and control unit 30, and the alarm unit 100 is used for alarming after faults and emergency stop.
The sludge organic-inorganic separation system further comprises a cleaning unit 90, the cleaning unit 90 is connected with the regulating and controlling unit 30, the cleaning unit 90 is arranged at the front end of the whole sludge separation system, the cleaning unit 90 is connected with tap water, water inflow is controlled according to actual working and running requirements, and residual sludge in the sludge organic-inorganic separation system is cleaned, so that the problem of pipeline blockage is prevented and solved.
As shown in fig. 1 to 3, based on the above-mentioned sludge organic-inorganic separation system, the present invention further provides a control method of the sludge organic-inorganic separation system, which includes:
monitoring the sludge feed rate and flow rate of the feed port 703 of the separation unit 70, the organic sludge discharge flow rate of the overflow port 702 of the separation unit 70, and the sludge level height in the sludge storage unit 80 by the measurement unit 60;
the data acquired by the measurement unit 60 is transmitted to the main control unit 10 through the data transmission unit 20;
the data transmitted by the data transmission unit 20 is collected, displayed and stored in real time through the main control unit 10, and is rapidly processed and judged according to the transmitted data, and corresponding regulation and control instructions are timely sent to the regulation and control unit 30; the parameter ranges set in the main control unit 10 include: the system debugging stage is determined to have a sludge critical feeding speed range V1-V2, a sludge flow range Q1-Q2 under the critical feeding speed, an organic sludge discharging flow range Q3-Q4 of the separated overflow port 702, and a ratio K1-K2 of separated organic sludge and inorganic sludge determined by a laboratory;
when the feeding speed V of the sludge is smaller than V1, it indicates that the feeding speed of the sludge is too small, and the feeding speed of the sludge into the separation unit 70 needs to be increased by the adjusting and controlling unit 30, that is, the frequency of the variable frequency pump 301 is increased to increase the feeding speed of the sludge;
when the sludge feeding speed V is less than V1 and the feeding speed of the sludge entering the separation unit 70 is increased through the regulation and control unit 30, when the set critical sludge feeding speed range still cannot be reached, transmitting a signal to the main control unit 10 to send out a regulation and control instruction again, if the set critical sludge feeding speed range still cannot be reached, indicating that the sludge in the sludge modification tank 401 is insufficient or a pipeline blockage fault occurs in the system, and prompting a user that the sludge amount and the fault problem in the sludge modification tank 401 need to be checked;
when the feeding speed V of the sludge is greater than V2, it indicates that the feeding speed of the sludge is too high, and the feeding speed of the sludge entering the separation unit 70 needs to be reduced by the adjusting and controlling unit 30, that is, the feeding speed of the sludge is reduced by the variable frequency pump 301 for frequency modulation and the reflux device 302;
when the discharge flow rate Q of the organic sludge of the overflow port 702 after separation is less than Q3 and the discharge flow rate Q1-Q of the inorganic sludge sand setting port is more than Q, the sludge feeding speed is too high, the light component organic sludge obtains larger centrifugal force in the separation unit 70 (i.e. the cyclone 701), so that more organic sludge is discharged from the sand setting port at the lower end of the separation unit 70 (i.e. the cyclone 701), and the feeding speed of the sludge entering the separation unit 70 needs to be reduced through the regulating and controlling unit 30, namely, the frequency modulation and the reflux device 302 are adopted to reduce the feeding speed of the sludge;
when the organic sludge discharge flow Q of the overflow port 702 after separation is greater than Q4 and the inorganic sludge sand setting port discharge flow Q2-Q is less than Q, it is indicated that the sludge feed rate is too small, the centrifugal force obtained by heavy component organic sludge in the separation unit 70 (i.e. the cyclone 701) is small, some large-particle inorganic sand is difficult to spin out of the sand setting port, so that inorganic sand in the separation unit 70 (i.e. the cyclone 701) is blocked, more inorganic sludge is discharged from the overflow port 702 at the upper end of the separation unit 70 (i.e. the cyclone 701), so that the feed rate of sludge entering the separation unit 70 needs to be increased by the regulation unit 30 and the organic sludge discharge flow of the overflow port 702 needs to be reduced, i.e. the frequency of the variable frequency pump 301 is increased to feed the sludge, and the opening of the regulating valve 303 is reduced, so that the organic sludge discharge flow of the overflow port 702 is reduced, the rotational pressure in the separation unit 70 (i.e. the cyclone 701) is increased, and the accuracy of organic-inorganic separation of sludge is improved.
Further, the data measured by the measuring unit 60 of the system per minute is transmitted to the main control unit 10 for recording in real time by the data transmission unit 20, and then transmitted to the main control unit
Calculating the organic-inorganic ratio of the separated sludge, and detecting the organic-inorganic separation effect of the sludge in actual operation;
when the actual organic-inorganic separation ratio K of the sludge is less than K1, the excessive discharge amount of the separated organic sludge is indicated;
when the actual organic-inorganic separation ratio K of the sludge is more than K2, the inorganic sludge is excessive after separation;
on the premise that the sludge feeding speed and the discharge flow of the separated organic sludge overflow port 702 are both ensured to meet the set range, the actual organic-inorganic separation ratio of the sludge is still not in accordance with the separation ratio range determined by a laboratory, and the critical sludge feeding speed range is required to be debugged again and determined.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. The sludge organic-inorganic separation system is characterized by comprising a main control unit, a data transmission unit, a regulation and control unit, a sludge modification unit, a power unit, a measurement unit, a separation unit, a sludge storage unit, a cleaning unit, an alarm unit and an emergency stop unit; the main control unit is respectively connected with the data transmission unit and the regulation and control unit; the data transmission unit is connected with the measurement unit; the regulation and control unit is respectively connected with the sludge modification unit and the power unit; the measuring unit is respectively connected with the separating unit and the sludge storage unit; wherein,,
the measuring unit is used for monitoring the sludge feeding speed and flow rate of the feeding port of the separating unit, the organic sludge discharging flow rate of the overflow port of the separating unit and the sludge liquid level height in the sludge storage unit;
the data transmission unit is used for transmitting the data acquired by the measurement unit to the main control unit;
the main control unit is used for collecting, displaying and storing the data transmitted by the data transmission unit in real time, rapidly processing and judging the data according to the transmitted data, and timely sending out corresponding regulation and control instructions to the regulation and control unit;
the control unit comprises a control part and an adjusting part, and the control part is used for controlling the start and stop of the power unit and controlling the sludge modification unit to complete sludge modification; the adjusting part is used for adjusting the sludge feeding speed and flow of the feeding port of the separating unit and the organic sludge discharging flow of the overflow port of the separating unit according to the instruction sent by the main control unit so as to realize the working state adjustment of the sludge organic-inorganic separating system.
2. The sludge organic-inorganic separation system according to claim 1, wherein the separation unit is a cyclone, the sludge storage unit comprises an inorganic sludge storage tank and an organic sludge storage tank, a feed inlet of the separation unit is connected with the sludge modification unit, a discharge outlet of the separation unit is connected with the inorganic sludge storage tank, and an overflow outlet of the separation unit is connected with the organic sludge storage tank.
3. The sludge organic-inorganic separation system according to claim 2, wherein the sludge modification unit comprises a sludge modification tank with a stirrer, the sludge modification tank is provided with a pH monitor, and the sludge modification tank is connected with a dosing device.
4. A sludge organic-inorganic separation system according to claim 3, wherein the power unit comprises a sludge feed pump and a sludge pump, the sludge feed pump is connected with a feed inlet of the sludge modification tank, and a discharge outlet of the sludge modification tank is connected with a feed inlet of the cyclone through the sludge pump; the sludge feeding pump is a screw pump.
5. The sludge organic-inorganic separation system according to claim 4, wherein the adjusting portion comprises a variable frequency pump, a reflux device and an adjusting valve, the variable frequency pump is a sludge pump of a power unit, the reflux device is connected with the variable frequency pump in parallel, and the adjusting valve is connected on a pipeline of an overflow port of the separating unit to the organic sludge storage tank.
6. The sludge organic-inorganic separation system of claim 2, wherein the measurement unit comprises a first intelligent electromagnetic flowmeter, a second intelligent electromagnetic flowmeter, a first radar level gauge and a second radar level gauge, the first intelligent electromagnetic flowmeter is connected to a pipeline near a feed port side of the separation unit, the second intelligent electromagnetic flowmeter is connected to a pipeline near an overflow port side of the separation unit, the first radar level gauge is connected to a top of the inorganic sludge storage tank, and the second radar level gauge is connected to a top of the organic sludge storage tank.
7. The sludge organic-inorganic separation system according to claim 1, further comprising an emergency stopping unit and an alarm unit which are respectively connected with the regulation and control unit, wherein the emergency stopping unit is used for performing emergency stopping when the system fails and the main control unit secondarily sends out a regulation and control instruction and still cannot meet the preset feeding speed and the separation flow range of the system; the alarm unit is used for carrying out alarm prompt after faults and emergency stop occur.
8. The sludge organic-inorganic separation system according to claim 1, further comprising a cleaning unit connected with the control unit, wherein the cleaning unit is arranged at the front end of the whole sludge separation system, the cleaning unit is connected with tap water, and the control unit can control the cleaning unit to clean the whole separation system according to actual working and running requirements.
9. A control method of the sludge organic-inorganic separation system according to any one of claims 1 to 8, comprising:
monitoring the sludge feeding speed and flow of a feeding port of the separation unit, the organic sludge discharging flow of an overflow port of the separation unit and the sludge liquid level in the sludge storage unit through the measuring unit;
transmitting the data acquired by the measuring unit to the main control unit through the data transmission unit;
the data transmitted by the data transmission unit is collected, displayed and stored in real time through the main control unit, and is processed and judged rapidly according to the transmitted data, and a corresponding regulation and control instruction is sent out by the regulation and control unit in time; the parameter range set in the main control unit comprises: the system debugging stage is determined to have a sludge critical feeding speed range V1-V2, a sludge flow range Q1-Q2 under the critical feeding speed, an organic sludge discharging flow range Q3-Q4 of the separated overflow port, and a ratio K1-K2 of the separated organic sludge and the inorganic sludge determined by a laboratory;
when the feeding speed V of the sludge is less than V1, the feeding speed of the sludge entering the separation unit is increased through the regulation and control unit;
when the feeding speed V of the sludge is less than V1 and the feeding speed of the sludge entering the separation unit is improved through the regulation and control unit, when the set critical feeding speed range of the sludge still cannot be reached, transmitting a signal to the main control unit to send out a regulation and control instruction again, and if the set critical feeding speed range of the sludge still cannot be reached, warning a user that the sludge quantity and the fault problem in the sludge modification tank need to be checked;
when the feeding speed V of the sludge is more than V2, reducing the feeding speed of the sludge entering the separation unit through the regulation unit;
when the discharge flow Q of the organic sludge of the overflow port after separation is less than Q3 and the discharge flow Q1-Q of the inorganic sludge sand setting port is more than Q, the feeding speed of the sludge entering the separation unit is reduced through the regulating and controlling unit;
when the discharge flow Q of the organic sludge of the overflow port after separation is more than Q4 and the discharge flow Q2-Q of the inorganic sludge sand setting port is less than Q, the feeding speed of the sludge into the separation unit is increased and the discharge flow of the organic sludge of the overflow port is reduced through the regulating and controlling unit.
10. The method for controlling a sludge organic-inorganic separation system as claimed in claim 9, wherein,
the data measured by the measuring unit of each minute of the system is transmitted to the main control unit for recording in real time through the data transmission unit, and the data is recorded by
Calculating the organic-inorganic ratio of the separated sludge, and detecting the organic-inorganic separation effect of the sludge in actual operation;
when the actual organic-inorganic separation ratio K of the sludge is less than K1, the excessive discharge amount of the separated organic sludge is indicated;
when the actual organic-inorganic separation ratio K of the sludge is more than K2, the inorganic sludge is excessive after separation;
on the premise that the sludge feeding speed and the discharge flow of the separated organic sludge overflow port are both in a set range, the actual organic-inorganic separation ratio of the sludge is still not in accordance with the separation ratio range determined in the laboratory, and the critical sludge feeding speed range is required to be debugged again and determined.
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| CN202310083295.2A CN116081907A (en) | 2023-02-03 | 2023-02-03 | Sludge organic-inorganic separation system and control method thereof |
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