CN108117238B - Full-automatic system for treating industrial wastewater of automobile and control method - Google Patents
Full-automatic system for treating industrial wastewater of automobile and control method Download PDFInfo
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- CN108117238B CN108117238B CN201810146563.XA CN201810146563A CN108117238B CN 108117238 B CN108117238 B CN 108117238B CN 201810146563 A CN201810146563 A CN 201810146563A CN 108117238 B CN108117238 B CN 108117238B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/22—O2
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to a full-automatic system and a control method for treating industrial wastewater of an automobile, which comprises a control system, an equipment system and an alarm system; the control system is respectively in communication connection with the equipment system and the alarm system; the equipment system comprises a regulating pond system, a reaction tank system, a settling tank system, a reverse regulating tank system, an intermediate pond system, an SBR pond system and a dosing system. The sewage treatment of the technical scheme mainly comprises the steps of adding chemicals for physicochemical treatment, aerating for biochemical treatment, and regularly discharging and pressing sludge, the invention monitors the liquid level, the water quality and the like in real time through various sensors, is linked with corresponding equipment, sets corresponding values, and realizes full-automatic chemical adding, stirring, aerating and sludge discharging according to different water qualities; the full-automatic operation of sewage treatment is realized, the operation is effective and reliable, only one operator needs to be arranged during normal operation, and the labor cost is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of environmental protection industry, and particularly relates to a full-automatic system for treating automobile industrial wastewater and a control method.
Background
The automobile industrial waste water is mainly paint spraying, degreasing, phosphorizing, electrophoresis and oily waste water generated in the processes of coating and machining, and the main pollutants of the waste water are phosphorus, heavy metals, COD and oils. With the increasing importance of the society on environmental protection and the rising of labor cost, the automation of sewage treatment is the development trend.
The current control mode is mainly an automatic and manual combination mode, wherein the dosage is controlled to be a manual mode, the concentration of the source water pollutants is tested by manual sampling, and the dosage is adjusted; the sludge discharge is manually operated; the aeration fan is controlled to be operated manually, and the air quantity can not be adjusted.
The manual operation is greatly influenced by subjective factors, the treatment effect and efficiency cannot be guaranteed, the labor cost is high, and the long-term consideration of the operation of the sewage station is not facilitated.
The existing liquid level meter is generally divided into a low level, a medium level and a high level, a medium liquid level water pump runs, a high liquid level alarms, and the low liquid level stops. However, the low liquid level alarm is lacked, and the motor of the water pump is easily burnt out under the condition that the low liquid level water pump stops failure.
Disclosure of Invention
The invention aims to provide a full-automatic system and a control method for treating industrial wastewater of an automobile, which aim to solve the problem that the wastewater treatment in the prior art cannot be effectively controlled and alarmed in time.
The invention is realized by the following technical scheme:
a full-automatic system for treating industrial wastewater of automobiles comprises a control system, an equipment system and an alarm system; the control system is respectively in communication connection with the equipment system and the alarm system;
the equipment system comprises a regulating tank system, a reaction tank system, a settling tank system, a reverse regulating tank system, an intermediate water tank system, an SBR tank system and a dosing system;
the regulating pond system comprises a regulating pond, a first ultrasonic liquid level meter, a first flow impeller, a first lift pump, an online monitor and a flowmeter;
the first ultrasonic liquid level meter, the first flow pusher, the first lifting pump, the online monitor and the flow meter are all arranged in the regulating tank;
the reaction tank system comprises a reaction tank, a first pH on-line monitor and a first stirrer; the first pH on-line monitor and the first stirrer are both arranged in the reaction tank; the water outlet of the first lift pump is connected with the water inlet of the reaction tank;
the settling tank system comprises a settling tank, a screw conveyor and a pressure sensor; the spiral conveyer and the pressure sensor are both arranged in the precipitation tank, and a water outlet of the reaction tank is connected with a water inlet of the precipitation tank through a pipeline;
the reverse adjusting tank system comprises a reverse adjusting tank, a second pH on-line monitor and a second stirrer, the second pH on-line monitor and the second stirrer are arranged in the reverse adjusting tank, and a water outlet of the settling tank is connected with a water inlet of the reverse adjusting tank;
the middle water tank system comprises a middle water tank, a second ultrasonic liquid level meter and a second lifting pump; the second ultrasonic liquid level meter and the second lifting pump are arranged in the intermediate water pool, and a water outlet of the reverse adjusting groove is connected with a water inlet of the intermediate water pool through a pipeline;
the SBR pool system comprises an SBR pool, a third ultrasonic liquid level meter, an aeration fan, a second flow impeller, a decanter and an online dissolved oxygen instrument; the third ultrasonic liquid level meter, the aeration fan, the second flow pusher, the decanter and the online dissolved oxygen meter are all arranged in the SBR tank, and a water outlet of the second lift pump is connected with a water inlet of the SBR tank through a pipeline;
the medicine adding system comprises a medicine dissolving tank, a medicine adding tank, a liquid level meter, a third stirrer and a medicine adding pump; the outlet of the medicine dissolving tank is connected with the inlet of the medicine feeding tank; a third stirrer is arranged in the medicine dissolving tank;
the inlet of the dosing pump is connected with the outlet of the dosing tank through a pipeline; the outlet of the drug adding pump is connected with the reaction tank or the reverse regulation tank through a pipeline;
the first ultrasonic liquid level meter, the online monitor, the flowmeter, the first pH online monitor, the pressure sensor, the second pH online monitor, the second ultrasonic liquid level meter, the third ultrasonic liquid level meter, the online dissolved oxygen meter and the liquid level meter are respectively in communication connection with an input port of the control system;
the control switch of the first flow impeller, the control switch of the first lifting pump, the control switch of the first stirrer, the control switch of the screw conveyer, the control switch of the second stirrer, the control switch of the second lifting pump, the control switch of the aeration fan, the control switch of the second flow impeller, the control switch of the decanter, the control switch of the third stirrer and the control switch of the dosing pump are respectively in communication connection with an output port of the control system.
The equipment system also comprises a sludge treatment system which comprises a sludge concentration tank, a sludge filter press, a fourth ultrasonic liquid level meter, a sludge lifting pump and a supernatant overflow port electromagnetic valve;
the fourth ultrasonic liquid level meter, the sludge lifting pump and the supernatant overflow port electromagnetic valve are all arranged in the sludge concentration tank, a sludge discharge port of the sedimentation tank is connected with an inlet of the sludge concentration tank through a pipeline, and an outlet of the sludge lifting pump is connected with an inlet of the sludge filter press through a pipeline;
the outlet of the dosing pump is connected with the sludge concentration tank through a pipeline;
the fourth ultrasonic liquid level meter is in communication connection with the input port of the control system;
and the control switch of the sludge filter press, the control switch of the sludge lifting pump and the control switch of the supernatant overflow port electromagnetic valve are all in communication connection with the output port of the control system.
The on-line monitor at least comprises one, two or more than two of a COD on-line monitor, a total phosphorus on-line monitor or a heavy metal on-line monitor.
The control system is a programmable control system.
A method for controlling the treatment of the industrial wastewater of the automobile, which uses any one of the automatic systems for the treatment of the industrial wastewater of the automobile;
the first ultrasonic liquid level meter respectively transmits a detected water level signal in the regulating reservoir, a detected water quality signal in the regulating reservoir detected by the online monitor and a detected flow signal of wastewater entering the regulating reservoir to the control system;
the control system simultaneously outputs control signals to a control switch of the first lifting pump and a control switch of the first flow pusher according to the received water level signal, flow signal and water quality signal and a set program, and/or sends an alarm signal to an alarm system;
meanwhile, the control system outputs the control signals to the first stirrer control switch, the second stirrer control switch, the third stirrer control switch and the dosing pump control switch;
the first pH on-line monitor is used for detecting pH signals in the reaction tank, the second pH on-line monitor is used for respectively transmitting the detected pH signals in the reverse regulation tank to the control system, the control system outputs an acid-base control system to a control switch of an acid-base dosing pump in the dosing system through calculation, and the acid-base dosing pump is controlled to add acid or base into the reaction tank and the reverse regulation tank so as to control the pH value range in the reaction tank and the pH value range in the reverse regulation tank;
the pressure sensor transmits a pressure signal to the control system, and when the pressure signal reaches a set value, the control system outputs a starting signal to a control switch of the screw conveyor;
the second ultrasonic liquid level meter transmits a water level signal of an instant intermediate water pool to the control system, and the control system transmits a starting signal to a control switch of the second lifting water pump according to a set program and simultaneously and/or transmits an alarm signal to the alarm system;
and the third ultrasonic liquid level meter transmits a water level signal of the instant SBR pool to the control system, and the control system transmits a starting signal to the control switch of the aeration fan and the control switch of the second flow pusher according to a set program or outputs a starting signal to the control switch of the decanter under the condition that the aeration fan and the second flow pusher stop.
The first ultrasonic liquid level meter and the second ultrasonic liquid level meter are provided with four liquid level signals of low, high and high.
And the online dissolved oxygen instrument sends an instant detection signal to the control system, and the control system outputs a control signal to a control switch of the aeration fan according to a set dissolved oxygen range.
The control signals comprise a starting signal, an accelerating signal, a decelerating signal and a stopping signal.
The fourth ultrasonic liquid level meter instantly transmits a detected liquid level signal in the sludge concentration tank to the control system, the control system outputs a stop signal to a control switch of the screw conveyor according to a set program, outputs a start signal to the dosing pump, outputs an opening or stop signal to a control switch of the supernatant overflow port electromagnetic valve, and outputs start signals to a control switch of the sludge lifting pump and a control switch of the sludge filter press while outputting the stop signal to the control switch of the supernatant overflow port electromagnetic valve.
The invention has the beneficial effects that:
the sewage treatment of the technical scheme mainly comprises the steps of adding chemicals for physicochemical treatment, aerating for biochemical treatment, and regularly discharging and pressing sludge.
The invention realizes the full-automatic operation of sewage treatment, is effective and reliable, only needs to set one operator in normal operation, and greatly reduces the labor cost.
Drawings
FIG. 1 is a flow chart of the industrial wastewater treatment process of the present invention;
FIG. 2 is a schematic view of a dosing system.
Description of the reference numerals
1 medicine dissolving tank, 2 third stirrer, 3 medicine feeding tank, 4 medicine supplementing electromagnetic valve, 5 level meter and 6 medicine feeding pump.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
As shown in fig. 1, the present application provides a fully automatic system for treating wastewater in the automobile industry, which comprises a control system, an equipment system and an alarm system; the control system is respectively in communication connection with the equipment system and the alarm system.
In the application, the control system is a programmable control system, and the main functions are signal acquisition and processing, system parameter setting, process control and equipment interlocking control. All equipment parameters are displayed on the industrial control picture in real time, and fault information, alarm information, production state information and the like can be retrieved. The control system in the application can be used by common computers, single-chip microcomputers, industrial personal computers and other systems capable of realizing the control function of the application, and detailed description is omitted here.
In order to realize sewage treatment automation, various indexes influencing equipment operation are digitalized, for example, the dosage is determined to be a water quality parameter, the air quantity of an aeration fan is influenced to be an oxygen dissolving value in water, the sludge discharge period is determined to be a sludge deposition effect, information is acquired through a corresponding detection instrument to transmit information, and a P L C is used for controlling terminal equipment.
The equipment system comprises a regulating pond system, a reaction tank system, a settling tank system, a reverse regulating tank system, an intermediate pond system, an SBR pond system, a dosing system and a sludge treatment system.
The regulating pond system comprises a regulating pond, a first ultrasonic liquid level meter, a first flow impeller, a first lift pump, an online monitor and a flowmeter; in this embodiment, the on-line monitor includes at least one, two or more of a COD on-line monitor, a total phosphorus on-line monitor, or a heavy metal on-line monitor.
First ultrasonic wave level gauge, first impeller, first elevator pump, on-line monitoring appearance and flowmeter all set up in the equalizing basin. In this application, the first lift pump is one-use-one-standby, and the control switch is interlocked, and when one fails, the other automatically starts at the same time.
The reaction tank system comprises a reaction tank, a first pH on-line monitor and a first stirrer; the first pH on-line monitor and the first stirrer are both arranged in the reaction tank; the water outlet of the first lift pump is connected with the water inlet of the reaction tank.
The settling tank system comprises a settling tank, a screw conveyor and a pressure sensor; the screw conveyer and the pressure sensor are both arranged in the precipitation tank, and the water outlet of the reaction tank is connected with the water inlet of the precipitation tank through a pipeline.
The reverse adjusting tank system comprises a reverse adjusting tank, a second pH on-line monitor and a second stirrer, wherein the second pH on-line monitor and the second stirrer are arranged in the reverse adjusting tank, and a water outlet of the settling tank is connected with a water inlet of the reverse adjusting tank.
The middle water tank system comprises a middle water tank, a second ultrasonic liquid level meter and a second lifting pump; the second ultrasonic liquid level meter and the second lift pump are both arranged in the middle water pool, and the water outlet of the reverse regulation groove is connected with the water inlet of the middle water pool through a pipeline.
The SBR pool system comprises an SBR pool, a third ultrasonic liquid level meter, an aeration fan, a second flow impeller, a decanter and an online dissolved oxygen instrument; the third ultrasonic liquid level meter, the aeration fan, the second flow impeller, the decanter and the online dissolved oxygen meter are all arranged in the SBR tank, and the water outlet of the second lift pump is connected with the water inlet of the SBR tank through a pipeline.
As shown in fig. 2, the dosing system comprises a dissolving tank 1, a dosing tank 3, a liquid level meter 5, a third stirrer 2 and a dosing pump 6; the outlet of the medicine dissolving tank is connected with the inlet of the medicine feeding tank; a third stirrer is arranged in the medicine dissolving tank.
The inlet of the dosing pump is connected with the outlet of the dosing tank through a pipeline; the outlet of the drug-adding pump is connected with the reaction tank or the reverse regulation tank through a pipeline.
In this application, the dosing system may include an acid solution dosing system, an alkali solution dosing system, an aluminum polymer dosing system, an anionic polyacrylamide dosing system, or may further include a sterilization liquid dosing system according to the need of recycling. In any of the above dosing systems, the system comprises a drug dissolving tank, a dosing tank, a liquid level meter, a third stirrer and a dosing pump, and when dosing is performed on the reaction tank system, the reverse regulation tank system, the sludge treatment system and the like, the control system outputs control signals independently to corresponding equipment in each dosing system, that is, the dosing systems can operate independently or partially or completely together.
The level meters in the dosing system select different types of level meters according to different corrosivity and volatility, the lime solution dosing tank is provided with an ultrasonic level meter, the acid storage tank and the acid dosing tank are provided with magnetic turning plate level meters, and PAM, PAC and the like are provided with electrode type level meters.
A medicine supplementing electromagnetic valve 4 is arranged between the medicine dissolving tank 1 and the medicine feeding tank 2, the signal of the liquid level meter 5 is transmitted to the input end of the control system, when the liquid level is lower than the design value, the control system controls the medicine supplementing electromagnetic valve to be opened and the medicine liquid to be supplemented, and when the liquid level is higher than the design value, the control system controls the medicine supplementing electromagnetic valve to be closed.
The first ultrasonic liquid level meter, the online monitor, the flowmeter, the first pH online monitor, the pressure sensor, the second pH online monitor, the second ultrasonic liquid level meter, the third ultrasonic liquid level meter, the online dissolved oxygen meter and the liquid level meter are respectively in communication connection with the input port of the control system.
The control switch of the first flow impeller, the control switch of the first lifting pump, the control switch of the first stirrer, the control switch of the screw conveyer, the control switch of the second stirrer, the control switch of the second lifting pump, the control switch of the aeration fan, the control switch of the second flow impeller, the control switch of the decanter, the control switch of the third stirrer and the control switch of the dosing pump are respectively in communication connection with the output port of the control system.
The equipment system also comprises a sludge treatment system which comprises a sludge concentration tank, a sludge filter press, a fourth ultrasonic liquid level meter, a sludge lifting pump and a supernatant overflow port electromagnetic valve.
The fourth ultrasonic wave level gauge, the sludge lifting pump and the supernatant overflow port electromagnetic valve are all arranged in the sludge concentration tank, the sludge discharge port of the sedimentation tank is connected with the inlet of the sludge concentration tank through a pipeline, and the outlet of the sludge lifting pump is connected with the inlet of the sludge filter press through a pipeline.
The outlet of the dosing pump is connected with the sludge concentration tank through a pipeline.
And the fourth ultrasonic liquid level meter is in communication connection with the input port of the control system.
And a control switch of the sludge filter press, a control switch of the sludge lifting pump and a control switch of the supernatant overflow port electromagnetic valve are all in communication connection with an output port of the control system.
In the present application, an advanced treatment system may also be included, such as an ion membrane system or a reverse osmosis system, among others. The advanced treatment system mainly comprises filtration and disinfection, wherein the filtration is continuous through operation, and manual operation is not needed except for regular flushing and replacement of a filter material; the disinfection device can also be fully automatically dosed at regular time and quantity, which is not described herein.
The system also comprises a clean water tank system which comprises a clean water tank, an on-line monitor and a drainage pump, wherein the on-line monitor is in communication connection with an input port of the control system, and a control switch of the drainage pump is connected with an output port of the control system. In this application, the on-line monitoring appearance kind among the clean water system is selected according to the pollutant factor that needs control with the relevant country of this industrial waste water and local environmental protection regulation, and the conventionality has COD on-line monitoring appearance, ammonia nitrogen on-line monitoring appearance, total phosphorus on-line monitoring appearance, heavy metal on-line measuring appearance.
The application also provides an automobile industrial wastewater treatment control method, and the automobile industrial wastewater treatment full-automatic system is used.
The first ultrasonic liquid level meter respectively transmits a water level signal in the regulating reservoir, a water quality signal in the regulating reservoir detected by the on-line monitor and a flow signal of wastewater entering the regulating reservoir to the control system.
And the control system simultaneously outputs control signals to the control switch of the first lifting pump and the control switch of the first flow pusher according to the received water level signal, flow signal and water quality signal and a set program, and/or sends an alarm signal to an alarm system.
In this embodiment, the water level signal in the regulating reservoir that first ultrasonic wave level gauge detected is designed into four liquid level signals, is four liquid levels of low, height and height respectively, specifically arrives at this embodiment, can carry out following settlement, of course also can carry out the settlement of other data as required, does not influence the protection scope of this application. In this embodiment, it is high when the water level reaches 70% of the dissolved volume height of the regulating reservoir, 80% is high, 30% is low, 20% is low, therefore, when the water level is high water level, control system outputs a start signal to the control switch of the first lift pump, when the water level is low water level, control system outputs a stop signal to the control switch of the first lift pump, and when the water level is high or low, control system simultaneously outputs an alarm signal to the alarm system, in order to remind the operator to perform manual intervention under the condition that the automatic start-stop of the first lift pump is disabled.
Meanwhile, the control system outputs control signals to a first stirrer control switch, a second stirrer control switch, a third stirrer control switch and a dosing pump control switch; and if no water is fed in within the set time, all the stirring machines and the dosing pumps are delayed for half an hour to stop.
The first pH on-line monitor transmits the detected pH signal in the reaction tank and the second pH on-line monitor transmits the detected pH signal in the reverse regulation tank to the control system respectively, the control system outputs an acid-base control system to a control switch of an acid-base dosing pump in the dosing system through calculation, and the acid-base dosing pump is controlled to add acid or base into the reaction tank and the reverse regulation tank so as to control the pH value range in the reaction tank and the pH value range in the reverse regulation tank; in this application, the pH value in the reaction tank should be controlled to 10-11, and the pH value in the back-regulation tank should be controlled to 6-9.
The pressure sensor transmits a pressure signal to the control system, and when the pressure signal reaches a set value, the control system outputs a starting signal to a control switch of the screw conveyor; in this application, pressure sensor sets up in the sedimentation zone of precipitation tank, and when control system received pressure signal reached the setting value, the bottom of explanation precipitation tank had overstocked a quantitative mud, and control system control screw conveyer arranges mud to the sludge thickening groove automatically, and when pressure was less than the setting value, control system control screw conveyer stopped the operation.
The second ultrasonic liquid level meter transmits a water level signal of the immediate intermediate water tank to the control system, and the control system transmits a starting signal to a control switch of the second lifting water pump according to a set program and simultaneously and/or transmits an alarm signal to the alarm system.
The water level signal in the middle pond that the second ultrasonic wave level gauge detected is designed four liquid level signals, is low respectively, low, four liquid levels of height, specifically to this embodiment, can carry out following settlement, of course also can carry out the settlement of other data as required, does not influence the protection scope of this application. In this embodiment, it is high when the water level reaches 70% of the intermediate pool deposition height, 80% is high, 30% is low, 20% is low, therefore, when the water level is high, control system outputs a start signal to the control switch of the second lift pump, when the water level is low, control system outputs a stop signal to the control switch of the second lift pump, and when the water level is high or low, control system simultaneously outputs an alarm signal to the alarm system, in order to remind the operator to perform manual intervention under the condition that the second lift pump is automatically started or stopped to fail.
And the third ultrasonic liquid level meter transmits a water level signal of the instant SBR pool to the control system, the control system transmits a starting signal to a control switch of the aeration fan and a control switch of the second flow pusher according to a set program, or under the condition that the aeration fan and the second flow pusher are stopped and the liquid level reaches more than 70% of the effective liquid level, the control system outputs a starting signal to a control switch of the decanter to discharge supernatant, and the decanter is closed when the liquid level is lower than 30% of the effective liquid level.
In this embodiment, the third ultrasonic level meter detects that a liquid level signal of the SBR tank is transmitted to the control system, and when the control system determines that the liquid level in the SBR tank reaches 60% of the effective liquid level through a set program, the control system transmits a start signal to the control switch of the aeration internal machine and the control switch of the second flow pusher, and the aeration fan and the second flow pusher stop operating for 8-12 hours according to the set program.
The online dissolved oxygen instrument sends an instant detection signal to the control system, and the control system outputs a control signal to a control switch of the aeration fan according to a set dissolved oxygen range, wherein the dissolved oxygen range is 2-5 mg/L.
When the dissolved oxygen range is detected to be 2-5 mg/L, the operation of the aeration fan is controlled to stop, when the dissolved oxygen is too small, the rotating speed of the aeration fan is increased, and when the dissolved oxygen is too large, the rotating speed of the aeration fan is reduced.
The fourth ultrasonic liquid level meter transmits a detected liquid level signal in the sludge concentration tank to the control system in real time, the control system outputs a stop signal to a control switch of the screw conveyor according to a set program, outputs a start signal to the dosing pump, and outputs an opening or stop signal to a control switch of a supernatant overflow port electromagnetic valve, generally, the supernatant overflow electromagnetic valve is controlled to be opened by the control system and is closed after being opened for half an hour, wherein the opening is generally 10 to 16 hours of water entering the precipitation tank. And outputting a starting signal to a control switch of the sludge lifting pump and a control switch of the sludge filter press while outputting a stopping signal to a control switch of the supernatant overflow port electromagnetic valve.
And a signal detected by the fourth ultrasonic liquid level meter is input to the control system, when the control system obtains that the liquid level in the settling tank reaches 80% of the effective liquid level through comparison, the control system outputs a stop signal to a control switch of the screw conveyer, at the moment, the pressure value detected by the pressure sensor is higher than the lowest value set in the control system, and meanwhile, the control system controls the corresponding dosing pump to dose medicines into the settling tank.
When the on-line monitoring instrument in the clear water tank monitors that the water quality does not reach, the drainage electromagnetic valve is controlled by the control system to open and return, the wastewater which does not reach the standard in the clear water tank flows back to the regulating tank for retreatment, and when the on-line monitoring instrument monitors that the water quality reaches the standard, the drainage electromagnetic valve is controlled to be discharged or recycled.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A full-automatic system for treating industrial wastewater of automobiles is characterized by comprising a control system, an equipment system and an alarm system; the control system is respectively in communication connection with the equipment system and the alarm system;
the equipment system comprises a regulating tank system, a reaction tank system, a settling tank system, a reverse regulating tank system, an intermediate water tank system, an SBR tank system and a dosing system;
the regulating pond system comprises a regulating pond, a first ultrasonic liquid level meter, a first flow impeller, a first lift pump, an online monitor and a flowmeter;
the first ultrasonic liquid level meter, the first flow pusher, the first lifting pump, the online monitor and the flow meter are all arranged in the regulating tank;
the reaction tank system comprises a reaction tank, a first pH on-line monitor and a first stirrer; the first pH on-line monitor and the first stirrer are both arranged in the reaction tank; the water outlet of the first lift pump is connected with the water inlet of the reaction tank;
the settling tank system comprises a settling tank, a screw conveyor and a pressure sensor; the spiral conveyer and the pressure sensor are both arranged in the precipitation tank, and a water outlet of the reaction tank is connected with a water inlet of the precipitation tank through a pipeline;
the reverse adjusting tank system comprises a reverse adjusting tank, a second pH on-line monitor and a second stirrer, the second pH on-line monitor and the second stirrer are arranged in the reverse adjusting tank, and a water outlet of the settling tank is connected with a water inlet of the reverse adjusting tank;
the middle water tank system comprises a middle water tank, a second ultrasonic liquid level meter and a second lifting pump; the second ultrasonic liquid level meter and the second lifting pump are arranged in the intermediate water pool, and a water outlet of the reverse adjusting groove is connected with a water inlet of the intermediate water pool through a pipeline;
the SBR pool system comprises an SBR pool, a third ultrasonic liquid level meter, an aeration fan, a second flow impeller, a decanter and an online dissolved oxygen instrument; the third ultrasonic liquid level meter, the aeration fan, the second flow pusher, the decanter and the online dissolved oxygen meter are all arranged in the SBR tank, and a water outlet of the second lift pump is connected with a water inlet of the SBR tank through a pipeline;
the medicine adding system comprises a medicine dissolving tank, a medicine adding tank, a liquid level meter, a third stirrer and a medicine adding pump; the outlet of the medicine dissolving tank is connected with the inlet of the medicine feeding tank; a third stirrer is arranged in the medicine dissolving tank;
the inlet of the dosing pump is connected with the outlet of the dosing tank through a pipeline; the outlet of the drug adding pump is connected with the reaction tank or the reverse regulation tank through a pipeline;
the first ultrasonic liquid level meter, the online monitor, the flowmeter, the first pH online monitor, the pressure sensor, the second pH online monitor, the second ultrasonic liquid level meter, the third ultrasonic liquid level meter, the online dissolved oxygen meter and the liquid level meter are respectively in communication connection with an input port of the control system;
the control switch of the first flow impeller, the control switch of the first lifting pump, the control switch of the first stirrer, the control switch of the screw conveyer, the control switch of the second stirrer, the control switch of the second lifting pump, the control switch of the aeration fan, the control switch of the second flow impeller, the control switch of the decanter, the control switch of the third stirrer and the control switch of the dosing pump are respectively in communication connection with an output port of the control system;
the online monitor comprises one, two or more than two of a COD online monitor, a total phosphorus online monitor or a heavy metal online monitor;
when the water level reaches 70% of the volume of the regulating tank, the water level is high, 80% is high, 30% is low and 20% is low, therefore, when the water level is high, the control system outputs a starting signal to the control switch of the first lifting pump, when the water level is low, the control system outputs a stopping signal to the control switch of the first lifting pump, and when the water level is high or low, the control system simultaneously outputs an alarm signal to the alarm system.
2. The fully automatic system for treating automobile industrial wastewater as claimed in claim 1, wherein the equipment system further comprises a sludge treatment system; the sludge treatment system comprises a sludge concentration tank, a sludge filter press, a fourth ultrasonic liquid level meter, a sludge lifting pump and a supernatant overflow port electromagnetic valve;
the fourth ultrasonic liquid level meter, the sludge lifting pump and the supernatant overflow port electromagnetic valve are all arranged in the sludge concentration tank, a sludge discharge port of the sedimentation tank is connected with an inlet of the sludge concentration tank through a pipeline, and an outlet of the sludge lifting pump is connected with an inlet of the sludge filter press through a pipeline;
the outlet of the dosing pump is connected with the sludge concentration tank through a pipeline;
the fourth ultrasonic liquid level meter is in communication connection with the input port of the control system;
and the control switch of the sludge filter press, the control switch of the sludge lifting pump and the control switch of the supernatant overflow port electromagnetic valve are all in communication connection with the output port of the control system.
3. The fully automatic system for treating automobile industrial wastewater as claimed in claim 1, wherein the control system is a programmable control system.
4. An automobile industrial wastewater treatment control method using the fully automatic system for automobile industrial wastewater treatment of any one of claims 1 to 3; it is characterized in that the preparation method is characterized in that,
the first ultrasonic liquid level meter respectively transmits a detected water level signal in the regulating reservoir, a detected water quality signal in the regulating reservoir detected by the online monitor and a detected flow signal of wastewater entering the regulating reservoir to the control system;
the control system simultaneously outputs control signals to a control switch of the first lifting pump and a control switch of the first flow pusher according to the received water level signal, flow signal and water quality signal and a set program, and/or sends an alarm signal to an alarm system;
meanwhile, the control system outputs the control signals to the first stirrer control switch, the second stirrer control switch, the third stirrer control switch and the dosing pump control switch;
the first pH on-line monitor is used for detecting pH signals in the reaction tank, the second pH on-line monitor is used for respectively transmitting the detected pH signals in the reverse regulation tank to the control system, the control system outputs an acid-base control system to a control switch of an acid-base dosing pump in the dosing system through calculation, and the acid-base dosing pump is controlled to add acid or base into the reaction tank and the reverse regulation tank so as to control the pH value range in the reaction tank and the pH value range in the reverse regulation tank;
the pressure sensor transmits a pressure signal to the control system, and when the pressure signal reaches a set value, the control system outputs a starting signal to a control switch of the screw conveyor;
the second ultrasonic liquid level meter transmits a water level signal of an instant intermediate water pool to the control system, and the control system transmits a starting signal to a control switch of the second lifting water pump according to a set program and simultaneously and/or transmits an alarm signal to the alarm system;
the third ultrasonic liquid level meter transmits a water level signal of the instant SBR pool to the control system, and the control system transmits a starting signal to the control switch of the aeration fan and the control switch of the second flow pusher according to a set program, or outputs a starting signal to the control switch of the decanter under the condition that the aeration fan and the second flow pusher stop;
when the water level reaches 70% of the volume of the regulating tank, the water level is high, 80% is high, 30% is low and 20% is low, therefore, when the water level is high, the control system outputs a starting signal to the control switch of the first lifting pump, when the water level is low, the control system outputs a stopping signal to the control switch of the first lifting pump, and when the water level is high or low, the control system simultaneously outputs an alarm signal to the alarm system.
5. The wastewater treatment control method of automobile industry as claimed in claim 4, wherein an on-line dissolved oxygen meter sends an instant detection signal to the control system, and the control system outputs a control signal to a control switch of the aeration blower according to a set dissolved oxygen range.
6. The method according to claim 5, wherein the control signal includes a start signal, an acceleration signal, a deceleration signal, and a stop signal.
7. The method for controlling wastewater treatment in automobile industry according to claim 4, wherein the fourth ultrasonic level meter instantly transmits the detected liquid level signal in the sludge concentration tank to the control system, and the control system outputs a stop signal to the control switch of the screw conveyor, outputs a start signal to the dosing pump, outputs an on or stop signal to the control switch of the supernatant overflow port solenoid valve, and outputs a start signal to the control switch of the sludge lift pump and the control switch of the sludge filter press while outputting a stop signal to the control switch of the supernatant overflow port solenoid valve according to a set program.
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| CN110713306A (en) * | 2018-07-12 | 2020-01-21 | 天津市海纳源科技有限公司 | Automatic organic wastewater comprehensive treatment and recycling system |
| CN108975533B (en) * | 2018-07-20 | 2021-09-03 | 江苏吉星新材料有限公司 | Intelligent sewage treatment method for sapphire substrate factory |
| CN108996886A (en) * | 2018-09-13 | 2018-12-14 | 天津壹新环保工程有限公司 | A kind of automation sludge dewatering system and method |
| CN112666902A (en) * | 2020-12-15 | 2021-04-16 | 广州资源环保科技股份有限公司 | Control method for distributed sewage treatment, terminal equipment and readable storage medium |
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