KR20170099491A - Groundwater level monitoring of soil and oil leakage detection system - Google Patents

Abstract

The present invention relates to a system for monitoring a groundwater level of soil and detecting an oil leakage. Provided are the system and method for detecting the oil leakage by measuring the inflows of groundwater and oil to the observation wells in real time by installing observation wells in a plurality of areas causing contamination in an oil tank storage facility (gas stations, oil reservoirs, oil pipelines, and other industrial facilities) on the ground and under the ground and installing sensors in the observation wells, preventing the contamination and diffusion of the groundwater and soil caused by the oil leakage by monitoring the groundwater level, and providing an optimum solution for restoring contaminated soil by continuously measuring the moving path and level of the groundwater when the soil is contaminated.

Description

      BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a groundwater level monitoring system,

      BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a groundwater level monitoring and oil leak detection system and method for soil,

In order to prevent soil pollution on ground and underground oil storage facilities, it detects leakage of oil in real time and monitors the ground water in real time for a long time to detect the monthly and seasonal groundwater level and estimated groundwater flow, A method for providing an optimal solution for the contaminated soil remediation project at the optimal cost by selecting appropriate purification method and calculating the time required to utilize it as basic data for restoration of soil pollution in case of pollution in facilities site to be

     In general, oil storage facilities are buried underground and installed and operated. In case of underground storage facilities, there are many facilities that are used for a long period of time from 15 years to at most 30 years.

However, oil storage facilities buried underground are difficult to visually check the state of facilities

Because it is an environment, there is a limit to the maintenance and management of the facility, so much attention is paid to the pollution control of the soil in the site of the facility.

    The causes of soil contamination on the site are mostly leakage of oil underground, and there are various manifestations such as destruction of structures due to underground and ground tank corrosion or uneven settlement, tank lubrication, oil leakage from connection pipe during lubrication have.

    As a result of the soil contamination survey,

Defects in piping (leakage from oil due to corrosion on piping and piping connections in contact with water in the soil when used for a long time in the soil) have been found to be a frequent occurrence of soil contamination.

    The leakage of oil due to the aging of the oil pipelines and oil pipelines buried in the underground appears to be caused by the presence of groundwater in the soil and the leak rate is different according to the presence of groundwater in the soil. And when it detects the leakage, the pollution has already spread. Therefore, it takes much time and cost to clean the polluted soil.

    Leakage of oil does not only result from soil contamination on the site, but it also causes pollution by causing pollutants to move to other media such as groundwater pollution, river pollution, and air pollution. However, in the case of storage facilities buried underground, most of the preventive measures for soil contamination are limited to underground storage facilities, and measurement devices (sensors) capable of detecting leaks are installed to check whether leakage occurs.

    Typical underground storage facilities, such as petrol stations and petroleum refineries, consist of oil underground tanks and attached pipelines connected to tanks. The presence or absence of tanks is measured by measuring the inventory of the tanks for a certain period of time. In case of double tank, leakage detection sensor is attached to the gap between the tanks to detect leaks. Lubrication and piping are installed in a certain space to detect leaks.

    If the contamination occurs as described above, not only the soil but also the ground water are polluted together. Also, the purification technology for the contaminated site is costly and time consuming because the soil treatment technology and the groundwater treatment technology are applied together.

    In the past, periodic soil pollution survey was conducted to check for contamination. In case of nonconformity, contamination source, contamination distribution, and contamination area were calculated through detailed inspection to create a contaminated soil remediation plan. However, So there is a limit to accurately determining the state of soil and groundwater in the site.

   In order to accurately determine the pollution and flow of soil and groundwater in the site, it is necessary to use a method of surveying the soil and water quality for a long time by installing a plurality of sites on the site.

    The object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a method and a device for detecting a leak in real time by installing a plurality of observations in the vicinity of and around the pollution inducing facility in the site, And to provide a system and method for continuous monitoring

    The groundwater level monitoring and oil leakage detection system of the present invention includes a probe sensor unit capable of detecting groundwater level and oil leakage in an observation facility by installing a plurality of observation wells in a pollution inducing facility site of ground and underground oil tank storage facilities A water content sensor, a controller for storing and monitoring the measured value, determining whether the sensor is contaminated, and sending an alarm signal.

The probe sensor part measures the level of the oil at the observation point, the groundwater level, the detection of the oil leakage, and the oil level at the oil leak. The oil sensor is a device that can detect moisture and oil when a small amount of groundwater is present in the measurement.

The controller unit is designed as a microprocessor and a digitized circuit. The controller unit stores data of groundwater level, oil level and oil leakage data in real time in communication with a sensor. And a communication device capable of monitoring and managing at a remote site through an external network interface. The controller is configured to transmit a warning message to the manager when there is a difference between the reference value and the transmitted measurement value. The soil and groundwater monitoring method of the present invention measures data in real time, stores data in units of days, weeks, months, and years for each sensor at each point, and grasps groundwater flow using a MAP program.

    According to the groundwater level monitoring and oil leakage detection system and method of the present invention, the administrator can grasp the contamination of groundwater and soil at each point in real time at the site and at a remote site. Prevention and prevention of spread of pollution to a wide area against pollution can be prevented.

    According to the groundwater level monitoring and oil leakage detection system and method of the present invention, the data transmitted to the controller can be sorted and stored, and the data can be output in a format requested by the user. A system configured to process, output and store.

    The groundwater level monitoring and oil leakage detection system and method of the present invention can minimize the soil pollution accidents due to the oil leakage of the ground and underground storage facilities in cooperation with the apparatus installed in the oil storage facility, There is an advantage that it can be checked immediately and coped with.

As used herein,
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating the operation of a groundwater level monitoring and oil leakage detection system of the present invention. FIG.
2 is a system block diagram of a controller of a groundwater level monitoring and oil leakage detection system of the present invention.
FIG. 3 is a block diagram of a probe sensor unit for monitoring groundwater level and leakage of oil according to the present invention.
FIG. 4 is a configuration diagram and a configuration example of an oil / moisture detection sensor unit for detecting leakage of oil when a small amount of groundwater of the present invention is present.
FIG. 5 is a conceptual view of a section of an observation platform for installing a sensor for monitoring the level of groundwater of the present invention. [Regulations on Water Quality Conservation, etc. of Ground Water] See the provisions of Attachment 3 of Article 6.
6 is a reference diagram illustrating the principle of position sensing operation using magnetostrictive technology.
Fig. 7 is a reference diagram illustrating the operation principle of the optical sensor and the polarity sensor so as to distinguish between water and hydrocarbon.

    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of a groundwater level monitoring and oil leakage detection system and method according to the present invention will be described in detail with reference to the drawings.

    1, the groundwater level monitoring and oil leakage detection system of the present invention includes a controller unit 11, a plurality of probe sensors 12, and a water content sensor 13, as shown in FIG.

    The controller unit 11 collects and processes the signal Data transmitted from the probe sensor unit 12 and the water content sensor unit 13 and stores the signal Data in the display interface 22 in a form of an output form configured according to a user's request. Day, month, and year, and stores the processed data on a daily, weekly, monthly, or yearly basis. The data is managed using a monitoring PC through the RS-232 communication interface 27-3. And is configured to be able to be managed from a remote place in cooperation with the Internet network through the network interface 24. [

    The probe sensor unit 12 and the water content sensor unit 13 are provided with observation probes at a plurality of pollution inducing points in a site and a probe sensor unit 12 and a water content sensor unit 13 are installed therein.

    The probe sensor unit 12 measures the level, temperature, and oil level of the groundwater in the observation area using a magnetostrictive technology. If the layer is separated due to the specific gravity difference between water and oil when the oil is leaked, The flow sensing float 33 of the probe sensor unit 12 measures the height of the oil and the water sensing float 24 measures the height of water under the oil flow to the controller unit 11 And a signal transmission unit 32 for transmitting data. The controller unit 11 is configured to calculate the leakage amount of the oil by processing the transmitted data.

    The water content sensor unit 13 is composed of a combination of an optical sensor and an electric polarity sensor so as to distinguish between water and hydrocarbons. The water content sensor unit 13 is installed when a small amount of groundwater exists in the observation chamber. And is configured to transmit a signal to the controller unit 11 in case of leakage of the oil, so that the manager can promptly cope with it.

    The conceptual diagram of FIG. 5 exemplifies the standardized observation configuration, but it can be modified and supplemented according to the site conditions.

11. Controller (Controller section) 12. Probe Sensor section (Probe sensor section)
13. Oil / Water Detection Sensor (oil / water sensor)
14. Probe Sensor Cable 15. Oil / Water Detection Sensor Cable
16. Data Printer

21: CPU (central processing unit) 22: Disply interface (data indicator)
23: Data Input 24: Network communication interface (TCP / IP)
25: Oil / Water Detection Sensor connection
26: Probe Sensor connection 27-1: RS-485 communication interface
27-2: RS-485 / RS-232 interface converter
27-3: RS-232 Communication Interface 28: Power Supply
29: Monitoring PC

31. Probe Shaft 32. Probe Head (Signal Transmission Unit)
33. Product Float 34. Water Float
34-1. Ballast 35. Temperature Sensor
36. Magnetostrictive Position Sensing wire
37. Spacer Bracket
38. End Cap (probe finish) 39. Cable Assembly (signal transmission cable)
41. Oil / Water Detection Sensor
42. Oil / Water Detection Sensor Cable 43. Cable Assembly (Signal Transmission Cable)

Claims (5)

     A plurality of observations are installed at pollution inducing points in ground and underground oil storage sites and a controller for collecting and processing the signal data transmitted from the probe sensor unit 12 and the water sensor 13 installed in the observation vessel A probe sensor unit 12 for measuring the level, temperature and oil leakage of the groundwater in the plurality of observation wells and transmitting data to the controller unit 11, And a water content detection sensor unit (13) composed of a combination of an optical sensor and an polarity sensor for transmitting data to the controller unit (11) so as to monitor the groundwater level and the oil leakage in the soil.     The controller unit 11 can perform real-time monitoring through the display interface 22 in the form of an output format configured according to a user's request and output data in real time when required by the data printer 16 The data is processed and stored by day, week, month, year, and it is configured to be able to grasp the flow of groundwater by using the MAP program. If there is a difference from the measured value by setting the reference value, And can be easily managed using a monitoring PC through the RS-232 communication interface 27-3. The network interface 24 can be operated in a remote location in cooperation with the Internet network. Groundwater level monitoring and oil leak detection system for soil.     The probe sensor unit 12 according to claim 1, wherein the probe sensor unit 12 measures the level, temperature, and oil level of the groundwater in the observation vessel using a magnetostrictive technology, When the layer is separated, the oil sensing float 33 of the probe sensor unit 12 senses the level of the oil by the ballast 34-1. The float 34 measures the level of water under the oil to calculate the oil leakage amount A groundwater level monitoring and oil leak detection system that can be configured to soil.     The probing rod 31 of the probe sensor unit 12 is made of stainless steel and flexible polyvinylidene fluoride (PVDF) in consideration of the installation environment of the probe, The sensing float 33 and the water sensing float 34 are also made of stainless steel or Urethane to monitor the groundwater level and to detect the leakage of oil in the soil to maintain the convenience and durability of the installation. [7] The water sensor according to claim 1, wherein the water sensor (13) comprises a combination of an optical sensor and an electric polarity sensor so as to distinguish between water and hydrocarbons and is installed when a small amount of groundwater exists in the observation chamber. The system is configured to be able to detect the leakage of the oil so as to transmit a signal to the controller unit 11 when the oil is leaked so that the manager can promptly cope with the groundwater level monitoring and the oil leakage detection system.

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