CN111962631A - Automatic management system for ground rainwater or sewage of petrochemical plant - Google Patents

Automatic management system for ground rainwater or sewage of petrochemical plant Download PDF

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Publication number
CN111962631A
CN111962631A CN202010926795.4A CN202010926795A CN111962631A CN 111962631 A CN111962631 A CN 111962631A CN 202010926795 A CN202010926795 A CN 202010926795A CN 111962631 A CN111962631 A CN 111962631A
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CN
China
Prior art keywords
sewage
ground
rainwater
polluted rainwater
branch pipe
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010926795.4A
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Chinese (zh)
Inventor
向晋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Kaimeite Gases Co ltd
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Hunan Kaimeite Gases Co ltd
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Publication date
Application filed by Hunan Kaimeite Gases Co ltd filed Critical Hunan Kaimeite Gases Co ltd
Priority to CN202010926795.4A priority Critical patent/CN111962631A/en
Publication of CN111962631A publication Critical patent/CN111962631A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sewage (AREA)

Abstract

An automatic rainwater or sewage management system for ground of a petrochemical plant area is characterized in that a PLC (programmable logic controller) is respectively and electrically connected with a remote-transmission humidity detector, a remote-transmission water quality analyzer and a relay; the relay is respectively electrically connected with a sewage sedimentation tank water inlet electric valve and a municipal sewage pipe network water inlet electric valve. This system will heavily pollute the rainwater and distinguish with light pollution rainwater, will heavily pollute sewage and distinguish with light pollution sewage, carry different places respectively and handle, on the one hand, reduced sewage treatment plant's load, on the other hand has prevented the further pollution to the sewage in the municipal sewage pipe network.

Description

Automatic management system for ground rainwater or sewage of petrochemical plant
Technical Field
The invention relates to sewage treatment, in particular to an automatic rainwater or sewage management system for the ground of a petrochemical plant.
Background
The ground of the petrochemical plant area is often polluted by chemical substances, at the early stage of raining, a large amount of chemical substances remained on the ground are dissolved or mixed in rainwater, so that the rainwater is heavily polluted to become heavily polluted rainwater, and at the middle and later stages of raining, a small amount of chemical substances remained on the ground are dissolved or mixed in the rainwater, so that the rainwater is lightly polluted to become lightly polluted rainwater. At present, when a petrochemical plant treats plant ground rainwater, heavily polluted rainwater and lightly polluted rainwater are not distinguished, but the plant ground rainwater is collected and conveyed to a sewage treatment device to be treated as sewage, or the plant ground rainwater is collected and conveyed to a municipal rainwater drainage system.
In the petrochemical plant, sometimes a large amount of sewage that produces because of handling the production accident discharges the factory floor to, sometimes discharge the factory floor to because of handling a large amount of sewage that the unexpected accident produced that disappears, and these factory floor sewage do not distinguish heavy pollution sewage and light pollution sewage, or collect and carry sewage treatment plant, handle as sewage, or collect and carry municipal rainwater discharge system.
Disclosure of Invention
The invention provides an automatic management system for ground rainwater or sewage of a petrochemical plant area, aiming at solving the technical problem that the existing ground rainwater or sewage of the petrochemical plant area is treated without distinguishing heavy pollution rainwater or sewage from light pollution rainwater or sewage.
The invention relates to an automatic management system for rainwater or sewage on the ground of a petrochemical plant area, which is characterized by comprising the following components:
a ground polluted rainwater and ground sewage inlet main pipe, a first ground polluted rainwater and ground sewage inlet branch pipe, a second ground polluted rainwater and ground sewage inlet branch pipe, a first ground polluted rainwater and ground sewage outlet branch pipe, a second ground polluted rainwater and ground sewage outlet branch pipe, a sewage sedimentation tank water inlet electric valve, a municipal sewage pipe network water inlet electric valve and a sewage sedimentation tank;
one end of the ground polluted rainwater and ground sewage inlet main pipe is connected with a ground polluted rainwater and ground sewage collecting pipe network of a petrochemical plant area, and the other end of the ground polluted rainwater and ground sewage inlet main pipe is connected with one end of the first ground polluted rainwater and ground sewage inlet branch pipe and one end of the second ground polluted rainwater and ground sewage inlet branch pipe;
the inlet of the sewage sedimentation tank water inlet electric valve is connected with the other end of the first ground polluted rainwater and ground sewage inlet branch pipe, and the outlet of the sewage sedimentation tank water inlet electric valve is connected with one end of the first ground polluted rainwater and ground sewage outlet branch pipe;
the inlet of the municipal sewage pipe network water inlet electric valve is connected with the other end of the second ground polluted rainwater and ground sewage inlet branch pipe, and the outlet of the municipal sewage pipe network water inlet electric valve is connected with one end of the second ground polluted rainwater and ground sewage outlet branch pipe;
the other end of the first ground polluted rainwater and ground sewage outlet branch pipe is connected with the sewage sedimentation tank;
the other end of the second ground polluted rainwater and ground sewage outlet branch pipe is connected with a municipal sewage pipe network;
this petrochemical plant factory ground rainwater or sewage automatic management system still has:
a PLC controller, a remote-transmission humidity detector, a remote-transmission water quality analyzer and a relay;
the PLC is respectively and electrically connected with the remote-transmission humidity detector, the remote-transmission water quality analyzer and the relay;
the relay is electrically connected with the water inlet electric valve of the sewage settling tank and the water inlet electric valve of the municipal sewage pipe network respectively.
According to the automatic management system for ground rainwater or sewage of the petrochemical plant area, heavy polluted rainwater and light polluted rainwater are distinguished, heavy polluted sewage and light polluted sewage are distinguished and are respectively conveyed to different places to be processed, on one hand, the light polluted rainwater and the light polluted sewage are not conveyed to a sewage treatment plant to be processed, so that the load of the sewage treatment plant is reduced, on the other hand, the heavy polluted rainwater and the heavy polluted sewage are not conveyed to a municipal sewage pipe network, so that the sewage in the municipal sewage pipe network is prevented from being further polluted.
Drawings
FIG. 1 is a schematic view showing the construction of an automatic rainwater or sewage management system for the ground of a petrochemical plant according to the present invention.
Detailed Description
The following will further describe the embodiments of the automatic management system for rainwater or sewage on the ground of a petrochemical plant according to the present invention with reference to the accompanying drawings, and the features and advantages of the automatic management system for rainwater or sewage on the ground of a petrochemical plant according to the present invention will become more apparent.
The automatic management system for ground rainwater or sewage in a petrochemical plant area is shown in figure 1 and comprises a ground polluted rainwater and ground sewage inlet main pipe 1, a ground polluted rainwater and ground sewage inlet branch pipe 11, a ground polluted rainwater and ground sewage inlet branch pipe 12, a ground polluted rainwater and ground sewage outlet branch pipe 13, a ground polluted rainwater and ground sewage outlet branch pipe 14, a sewage settling tank water inlet electric valve 6, a municipal sewage pipe network water inlet electric valve 7 and a sewage settling tank 2.
One end of the ground-polluted rainwater and ground-sewage inlet main pipe 1 is connected to a ground-polluted rainwater and ground-sewage collecting pipe network of a petrochemical plant area as indicated by a large arrow, and the other end is connected to one ends of the ground-polluted rainwater and ground-sewage inlet branch pipes 11 and the ground-polluted rainwater and ground-sewage inlet branch pipes 12.
The inlet of the sewage sedimentation tank water inlet electric valve 6 is connected with the other end of the ground polluted rainwater and ground sewage inlet branch pipe 11, and the outlet is connected with one end of the ground polluted rainwater and ground sewage outlet branch pipe 13.
The inlet of the municipal sewage pipe network water inlet electric valve 7 is connected with the other end of the ground polluted rainwater and ground sewage inlet branch pipe 12, and the outlet is connected with one end of the ground polluted rainwater and ground sewage outlet branch pipe 14.
The other end of the ground polluted rainwater and ground sewage outlet branch pipe 13 is connected with the sewage sedimentation tank 2.
The other end of the ground polluted rainwater and ground sewage outlet branch pipe 14 is connected to a municipal sewage pipe network as indicated by the large arrow.
The sewage settling tank 2 is provided with an overflow wall 21. A filter screen 22 is fixedly arranged at the overflow port on the overflow wall 21.
As shown in FIG. 1, the automatic management system for rainwater or sewage on the ground of a petrochemical plant area of the present invention further has a centrifugal pump 3. The inlet of the centrifugal pump 3 is connected with one end of a centrifugal pump inlet pipeline 15, the outlet is connected with one end of a centrifugal pump outlet pipeline 16, the other end of the centrifugal pump inlet pipeline 15 extends into the bottom pit of the sewage sedimentation tank 2 from the upper part of the sewage sedimentation tank 2, and the other end of the centrifugal pump outlet pipeline 16 is connected with a sewage treatment plant pipe network shown by a large arrow.
A check valve 31, a shut-off valve 32 and a pressure gauge 9 are mounted on the centrifugal pump outlet line 16.
A remote moisture detector 51 is provided in the petrochemical plant site.
A remote water quality analyzer 52 is installed on the ground polluted rainwater and the ground sewage inlet main pipe 1.
A remote ultrasonic liquid level meter 53 is arranged above the sewage sedimentation tank 2.
A PLC controller 5 is electrically connected to the remote humidity detector 51, the remote water quality analyzer 52, the remote ultrasonic level meter 53 and a relay 8, respectively.
The relay 8 is respectively electrically connected with the water inlet electric valve 6 of the sewage sedimentation tank, the municipal sewage pipe network water inlet electric valve 7 and the motor of the centrifugal pump 3.
The operation of the automatic management system for the rainwater or the sewage on the ground of the petrochemical plant area is as follows:
as shown in fig. 1, during raining, the remote humidity detector 51 converts the detected corresponding humidity value into a 24V digital signal and sends the 24V digital signal to the PLC controller 5, the PLC sends the 24V digital signal to the relay 8 according to a logic program, the relay 8 controls to open the electric valve 6 for water intake of the sewage settling tank, the electric valve 7 for water intake of the municipal sewage pipe network is closed, and the ground polluted rainwater in the petrochemical plant area and the heavily polluted rainwater in the ground sewage collecting pipe network enter the main pipe 1, the ground polluted rainwater and ground sewage inlet branch pipe 11, the electric valve 6 for water intake of the sewage settling tank and the ground polluted rainwater and ground sewage outlet branch pipe 13 into the sewage settling tank 2 through the ground polluted rainwater and the ground sewage.
And when the relay 8 controls the opening of the water inlet electric valve 6 of the sewage sedimentation tank and the closing of the municipal sewage pipe network water inlet electric valve 7, the PLC delay logic control automatically starts, and after 15 minutes of delay, a 24V digital signal with delay time meeting is generated and stored.
Meanwhile, the remote water quality analyzer 52 detects harmful chemical components contained in heavily polluted rainwater that flows through the ground polluted rainwater and the ground sewage into the main pipe 1 in real time, converts the detected real-time harmful chemical component values into 24V digital signals and sends the 24V digital signals to the PLC controller 5, and when the detected real-time harmful chemical component values are lower than a set value, the PLC stores the corresponding 24V digital signals according to a logic program.
When the 24V digital signal which has the delay time met and the 24V digital signal corresponding to the real-time harmful chemical component value lower than the set value are both provided, an AND gate 24V digital signal is generated, the PLC sends the AND gate 24V digital signal to the relay 8 according to a logic program, the relay 8 controls to open the electric valve 7 for water inlet of the municipal sewage pipe network and close the electric valve 6 for water inlet of the sewage sedimentation tank, and the electric valve 7 for water inlet of the municipal sewage pipe network and the light polluted rainwater in the ground sewage pipe network enter the municipal sewage pipe network through the ground polluted rainwater and the ground sewage inlet main pipe 1, the ground polluted rainwater and the ground sewage inlet branch pipe 12, the electric valve 7 for water inlet of the municipal sewage pipe network and the ground polluted rainwater and the ground sewage outlet branch pipe 14.
As shown in fig. 1, when a large amount of sewage generated by processing a production accident is discharged to the ground of a plant area or a large amount of sewage generated by processing a sudden accident to fight fire is discharged to the ground of the plant area, the petrochemical plant ground polluted rainwater and the sewage in the ground sewage collecting pipe network enter the ground polluted rainwater and the ground sewage entering the main pipe 1, the remote transmission water quality analyzer 52 detects harmful chemical components contained in the sewage entering the ground polluted rainwater and the ground sewage entering the main pipe 1, converts the detected harmful chemical component values into 24V digital signals and sends the 24V digital signals to the PLC controller 5, when the detected harmful chemical component values exceed a set value, the sewage entering the ground polluted rainwater and the ground sewage entering the main pipe 1 is heavily polluted sewage, the PLC sends corresponding 24V digital signals to the relay 8 according to a logic program, and controls to open the electric valve 6 for sewage sedimentation tank water inlet through the relay 8, closing the electric water inlet valve 7 of the municipal sewage pipe network, and allowing ground polluted rainwater in the petrochemical plant area and heavily polluted sewage in the ground sewage collecting pipe network to enter the main pipe 1, the ground polluted rainwater and ground sewage inlet branch pipes 11, the electric water inlet valve 6 of the sewage sedimentation tank and the ground polluted rainwater and ground sewage outlet branch pipes 13 into the sewage sedimentation tank 2; when the detected harmful chemical component value is lower than a set value, the sewage entering the main pipe 1 is indicated to be light-polluted sewage, the PLC sends a corresponding 24V digital signal to the relay 8 according to a logic program, the relay 8 controls to open the electric water inlet valve 7 of the municipal sewage pipe network, the electric water inlet valve 6 of the sewage sedimentation tank is closed, and the ground-polluted rainwater in the petrochemical plant area and the light-polluted sewage in the ground sewage collecting pipe network enter the main pipe 1, the ground-polluted rainwater and ground sewage inlet branch pipe 12, the electric water inlet valve 7 of the municipal sewage pipe network, the ground-polluted rainwater and ground sewage outlet branch pipe 14 into the municipal sewage pipe network.
Heavily polluted rainwater or heavily polluted sewage enters the sewage settling tank 2, settling is performed in the tank at the upstream of the overflow wall 21, silt sinks to the bottom of the tank, the sewage level substantially free of silt rises above the top surface of the overflow wall 21, overflows into the tank at the downstream of the overflow wall 21, and floating materials on the liquid level are intercepted by the filter screen 22 and are removed at any time.
Sewage overflowing into the tank at the downstream of the overflow wall 21 flows into a bottom pit in the tank, after the centrifugal pump 3 is started, the sewage enters the centrifugal pump 3 through the centrifugal pump inlet pipeline 15, and after the pressure in the centrifugal pump 3 is increased, the sewage enters a pipe network of a sewage treatment plant through the centrifugal pump outlet pipeline 16 and is conveyed to the sewage treatment plant for treatment.
The remote ultrasonic liquid level meter 53 arranged above the sewage sedimentation tank 2 detects the sewage liquid level in the tank at the downstream of the overflow wall 21 in real time, converts the liquid level height value detected in real time into a 24V digital signal and sends the 24V digital signal to the PLC controller 5, when the liquid level height value exceeds the highest liquid level set value, the PLC sends the corresponding 24V digital signal to the relay 8 according to a logic program, the motor of the centrifugal pump 3 is controlled to start through the relay 8, when the liquid level height value is lower than the lowest liquid level set value, the PLC sends the corresponding 24V digital signal to the relay 8 according to the logic program, and the motor of the centrifugal pump 3 is controlled to stop through the relay 8.
Obviously, the automatic management system for the ground rainwater or the sewage of the petrochemical plant area distinguishes the heavy polluted rainwater from the light polluted rainwater, respectively conveys the heavy polluted rainwater and the light polluted sewage to different places for treatment, and respectively conveys the heavy polluted rainwater and the light polluted sewage to different places for treatment, so that the light polluted rainwater and the light polluted sewage are not conveyed to a sewage treatment plant for treatment, the load of the sewage treatment plant is reduced, and the heavy polluted rainwater and the heavy polluted sewage are not conveyed to a municipal sewage pipe network, and further pollution to the sewage in the municipal sewage pipe network is prevented.

Claims (1)

1. An automatic management system for rainwater or sewage on the ground of a petrochemical plant area is characterized by comprising:
a ground polluted rainwater and ground sewage inlet main pipe, a first ground polluted rainwater and ground sewage inlet branch pipe, a second ground polluted rainwater and ground sewage inlet branch pipe, a first ground polluted rainwater and ground sewage outlet branch pipe, a second ground polluted rainwater and ground sewage outlet branch pipe, a sewage sedimentation tank water inlet electric valve, a municipal sewage pipe network water inlet electric valve and a sewage sedimentation tank;
one end of the ground polluted rainwater and ground sewage inlet main pipe is connected with a ground polluted rainwater and ground sewage collecting pipe network of a petrochemical plant area, and the other end of the ground polluted rainwater and ground sewage inlet main pipe is connected with one end of the first ground polluted rainwater and ground sewage inlet branch pipe and one end of the second ground polluted rainwater and ground sewage inlet branch pipe;
the inlet of the sewage sedimentation tank water inlet electric valve is connected with the other end of the first ground polluted rainwater and ground sewage inlet branch pipe, and the outlet of the sewage sedimentation tank water inlet electric valve is connected with one end of the first ground polluted rainwater and ground sewage outlet branch pipe;
the inlet of the municipal sewage pipe network water inlet electric valve is connected with the other end of the second ground polluted rainwater and ground sewage inlet branch pipe, and the outlet of the municipal sewage pipe network water inlet electric valve is connected with one end of the second ground polluted rainwater and ground sewage outlet branch pipe;
the other end of the first ground polluted rainwater and ground sewage outlet branch pipe is connected with the sewage sedimentation tank;
the other end of the second ground polluted rainwater and ground sewage outlet branch pipe is connected with a municipal sewage pipe network;
this petrochemical plant factory ground rainwater or sewage automatic management system still has:
a PLC controller, a remote-transmission humidity detector, a remote-transmission water quality analyzer and a relay;
the PLC is respectively and electrically connected with the remote-transmission humidity detector, the remote-transmission water quality analyzer and the relay;
the relay is electrically connected with the water inlet electric valve of the sewage settling tank and the water inlet electric valve of the municipal sewage pipe network respectively.
CN202010926795.4A 2020-09-07 2020-09-07 Automatic management system for ground rainwater or sewage of petrochemical plant Pending CN111962631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010926795.4A CN111962631A (en) 2020-09-07 2020-09-07 Automatic management system for ground rainwater or sewage of petrochemical plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010926795.4A CN111962631A (en) 2020-09-07 2020-09-07 Automatic management system for ground rainwater or sewage of petrochemical plant

Publications (1)

Publication Number Publication Date
CN111962631A true CN111962631A (en) 2020-11-20

Family

ID=73392318

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010926795.4A Pending CN111962631A (en) 2020-09-07 2020-09-07 Automatic management system for ground rainwater or sewage of petrochemical plant

Country Status (1)

Country Link
CN (1) CN111962631A (en)

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