CN111521522A - Method and system for monitoring diffusion of oxidant in underground water - Google Patents
Method and system for monitoring diffusion of oxidant in underground water Download PDFInfo
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- CN111521522A CN111521522A CN201911116643.1A CN201911116643A CN111521522A CN 111521522 A CN111521522 A CN 111521522A CN 201911116643 A CN201911116643 A CN 201911116643A CN 111521522 A CN111521522 A CN 111521522A
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Abstract
The invention relates to a method and a system for monitoring diffusion of an oxidant in underground water, wherein the system comprises the following components: the probe, the central monitor and the display module are integrated; the number of the integrated probes is one or more, the integrated probes are installed on monitoring point positions, and the integrated probes can acquire water quality parameter information of the monitoring point positions and transmit the water quality parameter information to the central monitor in a wired or wireless mode; and the central monitor generates a three-dimensional graph representing oxidant diffusion according to the water quality parameter information, and displays the three-dimensional graph through the display module. The monitoring system can quickly detect the repair blind area, guide the effective feeding of the oxidant on the polluted site, reduce the overlapping of the oxidant feeding areas, avoid excessive repair, improve the utilization rate of the medicament, reduce the use amount of the medicament and save the cost.
Description
Technical Field
The invention relates to the technical field of polluted site restoration monitoring, in particular to a method and a system for monitoring diffusion of an oxidant in underground water.
Background
Organic pollutants in underground water are one of important pollution types of polluted sites in China, and as the organic polluted sites mainly comprise volatile organic pollution/semi-volatile organic pollution, in order to avoid secondary pollution caused by excavation, in recent years, in-situ remediation technologies of the polluted sites are gradually popularized and applied.
The in-situ chemical oxidation technology is favored because of the characteristics of good treatment effect, quick response, lower cost and the like. However, in the existing in-situ chemical oxidation technology, a short monitoring technology exists, and sampling and inspection are mainly adopted for monitoring in the repair process, so that the method has the advantage that the repair condition can be directly judged according to the amount of target pollutants in a detected object. However, due to the timeliness problem of the samples to be inspected, the problems of over-repair and longer operation period are often caused; in addition, multiple detections are needed in the repairing process, and the detection cost for organic pollutants is relatively expensive.
In addition, the existing rapid detection instrument for on-site organic pollutants is not comprehensive, the existing instrument mainly has the defects of large detection error, single directional data of a detected target, personnel-by-well detection and the like, and the applicability is not strong generally.
The defects of the existing detection instrument are not beneficial to quickly detecting the repair blind area, and the repair quality and efficiency are improved; the excessive repair caused by the overlapping of the medicament adding areas is not avoided; the utilization rate of the medicament is not improved, and the use amount of the medicament is reduced, so that the repair cost is reduced; the efficiency of manual monitoring is not facilitated to be improved, and the labor cost is reduced.
Disclosure of Invention
In view of the above, the present invention aims to overcome the shortcomings of the prior art and provide a method and a system for monitoring the diffusion of an oxidizing agent in underground water.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for monitoring the diffusion of an oxidizing agent in groundwater, comprising:
according to the characteristics of pollutants in the polluted site and hydrogeological conditions, the plane position and the vertical depth of the monitoring point position are determined by measuring the polluted site;
the integrated probe is arranged in the monitoring point location and fixed at a certain vertical depth, so that the probe acquires the water quality parameter information of the monitoring point location;
transmitting the collected water quality parameter information to a central monitor so that the central monitor generates a three-dimensional graph according to the water quality parameter information;
and determining the diffusion condition of the oxidant according to the water quality parameter distribution information of the underground water shown by the three-dimensional graph.
Optionally, the installing the integrated probe into the monitoring point location, and fixing the integrated probe at a certain vertical depth specifically includes:
placing the integrated probe into a position corresponding to the vertical depth;
and then, embedding quartz sand around the integrated probe, and covering the integrated probe to the ground by using red clay.
Optionally, the water quality parameter information includes: redox potential, dissolved oxygen, PH and temperature.
Optionally, determining the diffusion condition of the oxidant according to the water quality parameter distribution information of the groundwater shown in the three-dimensional map, including:
determining a change curve of the water quality parameters of the monitoring point position according to the water quality parameter values of the same monitoring point position at different time points, and calculating the trend of the change curve;
when the trend of the change curve is in an ascending trend, judging that the oxidant diffuses into the monitoring well;
and when the trend of the change curve is in a stable trend, judging that the oxidant does not diffuse into the monitoring well.
The invention also provides a system for monitoring diffusion of an oxidant in underground water, which comprises:
the probe, the central monitor and the display module are integrated;
the number of the integrated probes is one or more, the integrated probes are installed on monitoring point positions, and the integrated probes can acquire water quality parameter information of the monitoring point positions and transmit the water quality parameter information to the central monitor in a wired or wireless mode;
and the central monitor generates a three-dimensional graph representing oxidant diffusion according to the water quality parameter information, and displays the three-dimensional graph through the display module.
Optionally, the integrated probe comprises: a cylindrical housing;
a plurality of holes are formed in one end face of the shell, and electrodes are arranged in the holes;
an electrode protective cover is arranged on the peripheral circumference of the end face and is in threaded connection with the shell; a plurality of flow guide holes are formed in the electrode protective cover;
the water quality parameter information comprises: PH, dissolved oxygen, redox potential and temperature, said electrode comprising: a pH electrode, a dissolved oxygen electrode and a redox electrode;
a microprocessor is also arranged inside the shell; the integrated probe is also provided with a temperature sensor; the PH value electrode, the dissolved oxygen electrode, the oxidation-reduction electrode and the temperature sensor are respectively and electrically connected with the microprocessor, the PH value electrode, the dissolved oxygen electrode, the oxidation-reduction electrode and the temperature sensor can measure PH information, dissolved oxygen information, oxidation-reduction potential information and temperature information of pollutants and oxidants in water, the PH value electrode, the dissolved oxygen electrode, the oxidation-reduction electrode and the temperature sensor can transmit the PH information, the dissolved oxygen information, the oxidation-reduction potential information and the temperature information of the pollutants and the oxidants in reaction to the microprocessor in the form of analog voltage signals, and the microprocessor transmits the processed signals to the central monitor in a wired or wireless mode after carrying out analog-to-digital conversion and amplification on the analog voltage.
Optionally, the system further comprises: an alarm module; the alarm module is electrically connected with the central monitor and used for sending alarm information when the temperature value exceeds a reasonable temperature range.
Optionally, the signal output end of the integrated probe is connected to the central monitor through a corrosion-resistant and interference-resistant twisted pair.
Optionally, the system further comprises:
the wireless communication system comprises a wireless communication sending module, a wireless communication receiving module and a data transfer module;
the wireless communication sending module is electrically connected with a signal output end of the integrated probe, the wireless communication receiving module is electrically connected with the data transfer module, and the data transfer module is connected with the central monitor in a wired or wireless mode;
and the water quality parameter information acquired by the integrated probe is wirelessly transmitted to the data transfer module through the wireless communication sending module and the wireless communication receiving module.
Optionally, when the data relay module is connected to the central monitor in a wired manner, specifically, the data relay module is connected to the central monitor in a wired manner through an RS485 communication cable;
when the data transfer module is connected to the central monitor in a wireless manner, specifically, the monitoring system further includes: the system comprises a GPRS module and a cloud server;
the GPRS module is in wired connection with the data transfer module through an RS232 or RS485 communication cable, and the GPRS module is connected with the cloud server through a wireless network;
the data transfer module can upload the water quality parameter information acquired by the integrated probe to the cloud server through the GPRS module; the central monitor can access the cloud server through a wireless network to obtain the water quality parameter information.
By adopting the technical scheme, the system comprises: the probe, the central monitor and the display module are integrated; the number of the integrated probes is one or more, the integrated probes are installed on monitoring point positions, and the integrated probes can acquire water quality parameter information of the monitoring point positions and transmit the water quality parameter information to the central monitor in a wired or wireless mode; and the central monitor generates a three-dimensional graph representing oxidant diffusion according to the water quality parameter information, and displays the three-dimensional graph through the display module. The monitoring system can quickly detect the repair blind area, guide the effective feeding of the oxidant on the polluted site, reduce the overlapping of the oxidant feeding areas, avoid excessive repair, improve the utilization rate of the medicament, reduce the use amount of the medicament and save the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow diagram provided by a method for monitoring oxidant diffusion in groundwater according to the present invention;
FIG. 2 is a schematic diagram of the placement of the integrated probe of the present invention at a monitored site;
FIG. 3 is a floor plan of the oxidant injection and monitoring wells of FIG. 2;
FIG. 4 is a three-dimensional schematic diagram generated by the central monitor according to the water quality parameter information;
FIG. 5 is a schematic diagram of the overall structure provided by the system for monitoring diffusion of an oxidizing agent in groundwater according to the present invention;
FIG. 6(a) is a schematic view of the housing structure of the integrated probe of the system for monitoring the diffusion of an oxidizing agent in groundwater according to the present invention;
FIG. 6(b) is a schematic diagram of the structure of the electrode and the electrode shield of the integrated probe of the system for monitoring the diffusion of an oxidizing agent in groundwater according to the present invention;
FIG. 7 is a schematic diagram of the structure of an integrated probe of the system for monitoring diffusion of an oxidizing agent in groundwater according to the present invention.
In the figure: 1. integrating the probe; 101. a housing; 102. an electrode; 103. an electrode shield; 104. a flow guide hole; 105. a microprocessor; 106. a pH electrode; 107. a dissolved oxygen electrode; 108. a redox electrode; 109. a temperature sensor; 2. a central monitor; 3. a display module; 4. an alarm module; 5. a wireless communication transmitting module; 6. a wireless communication receiving module; 7. a data transfer module; 8. a GPRS module; 9. and a cloud server.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
FIG. 1 is a schematic flow diagram provided by the method for monitoring oxidant diffusion in groundwater according to the present invention.
As shown in fig. 1, the method for monitoring the diffusion of an oxidizing agent in groundwater according to the embodiment includes:
s1: according to the characteristics of pollutants in the polluted site and hydrogeological conditions, the plane position and the vertical depth of the monitoring point position are determined by measuring the polluted site;
specifically, the vertical depth of the integrated probe is determined according to the position of the aquifer.
S2: the integrated probe is arranged in the monitoring point location and fixed at a certain vertical depth, so that the probe acquires the water quality parameter information of the monitoring point location;
further, put integrated probe installation into monitoring position to fix in certain vertical degree of depth department, specifically include:
placing the integrated probe into a position corresponding to the vertical depth;
and then, embedding quartz sand around the integrated probe, and covering the integrated probe to the ground by using red clay.
Specifically, before the integrated probe is placed, the monitoring point position is determined through detection of a polluted site, the depth range of the underground aquifer of the monitoring point position is determined, and therefore the vertical depth of placement of the integrated probe is determined. In combination with figures 2 and 3 (with NW at the beginning representing an injection well and JC at the beginning representing a monitoring well), figure 2 shows a perspective view of the effect of an oxidant injection well and a monitoring well on a site being monitored, in practice drilled down from the surface to form an injection well and a monitoring well, whereby injection of oxidant is accomplished through the injection well and thus remediation of the contaminated site is further accomplished through the oxidant. In the process of monitoring the diffusion of the oxidant, an integrated probe is required to be placed at a position corresponding to the vertical depth, the overall profile of the integrated probe is cylindrical, the length of the integrated probe is 28 cm, and the diameter of the cross section of the integrated probe is 5 cm; then cover to ground with the integrated probe after red clay is wrapped up, play the water proof effect to prevent that subaerial water from getting into integrated probe, thereby influence groundwater quality of water. The integrated probe may also be placed within a monitoring well. In practical application, if the depth of one aquifer is less than or equal to three meters, the integrated probe can be placed at the middle depth position of the aquifer; if the depth of an aquifer is greater than three meters, an integrated probe can be used for every three meters deep layer scheme. It can be understood that the relation between the depth of the water-bearing layer and the placement of the integrated probe can be adjusted according to different actual monitoring sites and pollution conditions.
Further, the water quality parameter information includes: redox potential, dissolved oxygen, PH and temperature.
S3: transmitting the collected water quality parameter information to a central monitor so that the central monitor generates a three-dimensional graph according to the water quality parameter information;
as shown in fig. 4, the x-axis and y-axis of the three-dimensional map in fig. 4 are used to represent the position of the ground plane, and the z-axis represents the depth from the ground. The three-dimensional map generated according to the water quality parameter information specifically comprises: a three-dimensional graph of oxidation-reduction potential distribution, a three-dimensional graph of dissolved oxygen concentration distribution, a three-dimensional graph of PH value distribution and a three-dimensional graph of temperature distribution. In each three-dimensional graph, the x axis, the y axis and the z axis can determine a position point, and the color (or the shade of the color) of the position point represents the value of the corresponding water quality parameter in the graph. For example, fig. 4 is a three-dimensional graph of the dissolved oxygen concentration distribution at a certain time, and it can be seen that some regions in the graph are darker in color, some are lighter in color, and lighter in color indicate that the dissolved oxygen concentration in the region is low, and it can be determined that the oxidizing agent is not diffused into the region at that time.
Specifically, the oxidizing agent includes hydrogen peroxide or fenton's reagent.
S4: and determining the diffusion condition of the oxidant according to the water quality parameter distribution information of the underground water shown by the three-dimensional graph.
Further, determining the diffusion condition of the oxidant according to the water quality parameter distribution information of the groundwater shown by the three-dimensional graph, wherein the method comprises the following steps:
determining a change curve of the water quality parameters of the monitoring point position according to the water quality parameter values of the same monitoring point position at different time points, and calculating the trend of the change curve;
when the trend of the change curve is in an ascending trend, judging that the oxidant diffuses into the monitoring well;
and when the trend of the change curve is in a stable trend, judging that the oxidant does not diffuse into the monitoring well.
Specifically, according to a plurality of three-dimensional maps generated at different times, for example, a plurality of dissolved oxygen concentration distribution three-dimensional maps generated at different times, dissolved oxygen concentration values of the same monitoring point at different time points can be obtained, a change curve of the dissolved oxygen concentration of the monitoring point is determined according to the dissolved oxygen concentration values, and a trend of the change curve is calculated; when the trend of the change curve is in an ascending trend, judging that the oxidant diffuses into the monitoring well; and when the trend of the change curve is in a stable trend, judging that the oxidant does not diffuse into the monitoring well. And when the oxidant is judged not to diffuse to the monitoring point, blind area supplement repair is needed.
It should be noted that the time interval for collecting the water quality parameter data may be set as required.
According to the method for monitoring diffusion of the oxidant in the underground water, the probe arranged at the monitoring point is used for collecting the water quality parameter information of the monitoring point, the collected water quality parameter information is transmitted to the central monitor, so that the central monitor generates a three-dimensional graph according to the water quality parameter information, and finally the diffusion condition of the oxidant is determined according to the water quality parameter distribution information of the underground water displayed by the three-dimensional graph. The monitoring method described in this embodiment can rapidly detect the repair blind area through the three-dimensional map display, guide the effective feeding of the oxidant on the contaminated site, reduce the overlapping of the oxidant feeding areas, avoid excessive repair, improve the utilization rate of the medicament, reduce the use amount of the medicament, and save the labor cost.
FIG. 5 is a schematic diagram of the overall structure provided by the system for monitoring diffusion of an oxidizing agent in groundwater according to the present invention;
as shown in fig. 5, the system for monitoring diffusion of an oxidizing agent in groundwater comprises:
the integrated probe 1, the central monitor 2 and the display module 3;
the number of the integrated probes 1 is one or more, the integrated probes 1 are installed on monitoring point locations, and the integrated probes 1 can acquire water quality parameter information of the monitoring point locations and transmit the water quality parameter information to the central monitor 2 in a wired or wireless mode;
and the central monitor 2 generates a three-dimensional graph representing oxidant diffusion according to the water quality parameter information, and displays the three-dimensional graph through the display module 3.
Further, as shown in fig. 6 and 7, the integrated probe 1 includes: a cylindrical housing 101;
a plurality of holes are formed in one end face of the shell 101, and electrodes 102 are installed in the holes;
an electrode protection cover 103 is arranged on the periphery of the end face, and the electrode protection cover 103 is in threaded connection with the shell 101; a plurality of flow guide holes 104 are formed in the electrode protective cover 103; the electrode protection cover 103 can protect the electrode 102 from being collided with by the outside, the electrode protection cover 103 and the shell 101 are in threaded connection, so that the electrode protection cover 103 can be separated from the shell 101 through rotation, the electrode protection cover 103 is convenient to detach, and the electrode 102 is convenient to clean.
The water quality parameter information comprises: PH, dissolved oxygen, redox potential, and temperature, the electrode 102 comprising: a PH electrode 106, a dissolved oxygen electrode 107, and a redox electrode 108;
a microprocessor 105 is also arranged inside the shell 101; the PH electrode 106, the dissolved oxygen electrode 107 and the oxidation-reduction electrode 108 are electrically connected to the microprocessor 105, respectively, the PH electrode 106, the dissolved oxygen electrode 107 and the oxidation-reduction electrode 108 can measure PH information, dissolved oxygen information and oxidation-reduction potential information in water and transmit the information to the microprocessor 105 in the form of analog voltage signals, and after the microprocessor 105 performs analog-to-digital conversion and amplification on the analog voltage signals, the microprocessor transmits the processed signals to the central monitor 2 in a wired or wireless manner. The microprocessor 105 is model MSC 1210.
The electrode 102 measures the concentration value of each ion in the solution by a potentiometric analysis method, which is an analysis method for measuring the ion activity (or concentration) of the solution to be measured by obtaining the electromotive force of the electrochemical cell, and is a conventional technique.
Further, a temperature sensor 109 is further disposed on the integrated probe 1, and the temperature sensor 109 is electrically connected to the microprocessor 105 and is configured to collect temperature information of water, transmit the information to the microprocessor 105, and transmit the information to the central monitor 2 after being processed by the microprocessor 105. The type of the temperature sensor 109 is a DS18B20 digital temperature sensor, and the temperature sensor has the characteristics of voltage use, economy, practicability and the like.
The integrated probe 1 is supplied with power by an independent power supply, and the power supply model is NMA 0505.
Further, when the integrated probe 1 transmits the water quality parameter information to the central monitor 2 in a wired manner, specifically, the signal output end of the integrated probe 1 may be directly connected to the central monitor 2 through a corrosion-resistant and anti-interference twisted pair.
Further, when the integrated probe 1 transmits the water quality parameter information to the central monitor 2 in a wireless manner, the system further comprises:
the wireless communication system comprises a wireless communication sending module 5, a wireless communication receiving module 6 and a data relay module 7;
the wireless communication sending module 5 is electrically connected with the signal output end of the integrated probe 1, the wireless communication receiving module 6 is electrically connected with the data transfer module 7, and the water quality parameter information collected by the integrated probe 1 is sent out through the wireless communication sending module 5, received by the wireless communication receiving module 6 and transmitted to the data transfer module 7. The data relay module 7 is connected with the central monitor 2 in a wired or wireless manner.
Further, the wireless communication sending module 5 is in wired connection with the signal output end of the integrated probe 1 through an RS232 or RS485 communication cable, and the wireless communication receiving module 6 is in wired connection with the data transfer module 7 through an RS232 or RS485 communication cable.
Specifically, the wireless communication sending module 5 and the wireless communication receiving module 6 are both LoRa wireless communication modules.
Further, when the data relay module 7 is connected to the central monitor 2 in a wired manner, the data relay module 7 is directly connected to the central monitor 2 in a wired manner through an RS485 communication cable.
It should be noted that, when the data relay module 7 is connected to the central monitor 2 in a wireless manner, specifically, the monitoring system further includes: a GPRS module 8 and a cloud server 9;
the GPRS module 8 is in wired connection with the data transfer module 7 through an RS232 or RS485 communication cable, and the GPRS module 8 is connected with the cloud server 9 through a wireless network;
the data transfer module 7 can upload the water quality parameter information acquired by the integrated probe 1 to the cloud server 9 through the GPRS module 8; the central monitor 2 can access the cloud server 9 through a wireless network to obtain the water quality parameter information.
The central monitor 2 may be a terminal device fixedly installed indoors or a mobile terminal.
Further, the system further comprises: an alarm module 4; the alarm module 4 is electrically connected with the central monitor 2 and used for sending alarm information when the temperature value exceeds a reasonable temperature range. Under the normal condition, the temperature of the water of monitored point position should be in a fixed temperature interval within range, if when the temperature value of the water that temperature sensor 109 gathered surpassed the temperature reasonable interval, central monitor 2 control alarm module 4 reports to the police, and can control simultaneously display module 3 shows the unusual region of temperature through different colours with the form of three-dimensional map.
In the monitoring system for oxidant diffusion, an integrated probe 1 is firstly placed at an underground designated position, the overall profile of the integrated probe 1 is cylindrical, the integrated probe has the length of 28 cm and the section diameter of 5 cm, after the integrated probe 1 is placed at the underground designated position, the periphery of the integrated probe 1 is wrapped by quartz sand, and the quartz sand has water permeability and cannot influence the diffusion of the oxidant in water at the monitoring point; then cover integrated probe 1 after the parcel with red clay to ground, play the water proof effect to prevent that subaerial water from getting into integrated probe 1. The integrated probe 1 may also be placed in a monitoring well. In practical application, if the depth of an underground aquifer is less than or equal to three meters, the integrated probe 1 can be placed at the middle depth position of the aquifer; if the depth of an aquifer is greater than three meters, an integrated probe 1 can be used for every three meters deep solution. It will be appreciated that the relationship between the depth of the aquifer and the placement of the integrated probe 1 may also be adjusted according to the actual site being monitored and the contamination.
The integrated probe 1 collects water quality parameter information once at regular time intervals and outputs the water quality parameter information to the central monitor 2 in a wired or wireless mode, the central monitor 2 generates a plurality of three-dimensional graphs according to the water quality parameter information, such as a certain monitoring time, a temperature distribution three-dimensional graph, a dissolved oxygen concentration distribution three-dimensional graph and the like, wherein an x axis and a y axis of the three-dimensional graphs are used for representing the position of a ground plane, and a z axis represents the depth from the ground. In each three-dimensional graph, the x axis, the y axis and the z axis can determine a position point, and the color (or the shade of the color) of the position point represents the value of the corresponding water quality parameter in the graph. For example, in a three-dimensional map of the dissolved oxygen concentration distribution at a certain monitoring time, some regions in the map are darker and some regions are lighter, and a lighter region indicates that the dissolved oxygen concentration in the region is low, and it can be determined that the oxidizing agent has not diffused into the region at that time. The three-dimensional map can enable engineering personnel to quickly find repair blind spots and carry out supplement repair in time.
The system for monitoring diffusion of the oxidant in the groundwater in the embodiment collects water quality parameter information of a monitoring point position through a probe arranged at the monitoring point position, and transmits the collected water quality parameter information to the central monitor 2, so that the central monitor 2 generates a three-dimensional graph according to the water quality parameter information, and finally determines the diffusion condition of the oxidant according to water quality parameter distribution information of the groundwater displayed by the three-dimensional graph, thereby realizing monitoring of the oxidant repairing condition of a polluted site. The monitoring system can quickly detect out the repair blind area, guide the effective feeding of the oxidant on the polluted site, reduce the overlapping of the oxidant feeding area, avoid excessive repair, improve the utilization rate of the medicament, reduce the use amount of the medicament and save the cost.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It is to be noted that, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for monitoring the diffusion of an oxidizing agent in groundwater, comprising:
according to the characteristics of pollutants in the polluted site and hydrogeological conditions, the plane position and the vertical depth of the monitoring point position are determined by measuring the polluted site;
the integrated probe is arranged in the monitoring point location and fixed at a certain vertical depth, so that the probe acquires the water quality parameter information of the monitoring point location;
transmitting the collected water quality parameter information to a central monitor so that the central monitor generates a three-dimensional graph according to the water quality parameter information;
and determining the diffusion condition of the oxidant according to the water quality parameter distribution information of the underground water shown by the three-dimensional graph.
2. The method for monitoring according to claim 1, wherein said positioning an integrated probe at said monitoring site and fixed at a vertical depth comprises:
placing the integrated probe into a position corresponding to the vertical depth;
and then, embedding quartz sand around the integrated probe, and covering the integrated probe to the ground by using red clay.
3. The monitoring method of claim 1, wherein the water quality parameter information comprises: redox potential, dissolved oxygen, PH and temperature.
4. The monitoring method according to any one of claims 1 to 3, wherein the step of determining the diffusion of the oxidant according to the water quality parameter distribution information of the groundwater shown in the three-dimensional graph comprises the following steps:
determining a change curve of the water quality parameters of the monitoring point position according to the water quality parameter values of the same monitoring point position at different time points, and calculating the trend of the change curve;
when the trend of the change curve is in an ascending trend, judging that the oxidant diffuses into the monitoring well;
and when the trend of the change curve is in a stable trend, judging that the oxidant does not diffuse into the monitoring well.
5. An oxidant diffusion monitoring system in groundwater, comprising:
the probe, the central monitor and the display module are integrated;
the number of the integrated probes is one or more, the integrated probes are installed on monitoring point positions, and the integrated probes can acquire water quality parameter information of the monitoring point positions and transmit the water quality parameter information to the central monitor in a wired or wireless mode;
and the central monitor generates a three-dimensional graph representing oxidant diffusion according to the water quality parameter information, and displays the three-dimensional graph through the display module.
6. The monitoring system of claim 5, wherein the integrated probe comprises: a cylindrical housing;
a plurality of holes are formed in one end face of the shell, and electrodes are arranged in the holes;
an electrode protective cover is arranged on the peripheral circumference of the end face and is in threaded connection with the shell; a plurality of flow guide holes are formed in the electrode protective cover;
the water quality parameter information comprises: PH, dissolved oxygen, redox potential and temperature, said electrode comprising: a pH electrode, a dissolved oxygen electrode and a redox electrode;
a microprocessor is also arranged inside the shell; the integrated probe is also provided with a temperature sensor; the PH value electrode, the dissolved oxygen electrode, the oxidation-reduction electrode and the temperature sensor are respectively and electrically connected with the microprocessor, the PH value electrode, the dissolved oxygen electrode, the oxidation-reduction electrode and the temperature sensor can measure PH information, dissolved oxygen information, oxidation-reduction potential information and temperature information of pollutants and oxidants in water, the PH value electrode, the dissolved oxygen electrode, the oxidation-reduction electrode and the temperature sensor can transmit the PH information, the dissolved oxygen information, the oxidation-reduction potential information and the temperature information of the pollutants and the oxidants in reaction to the microprocessor in the form of analog voltage signals, and the microprocessor transmits the processed signals to the central monitor in a wired or wireless mode after carrying out analog-to-digital conversion and amplification on the analog voltage.
7. The monitoring system of claim 6, further comprising: an alarm module; the alarm module is electrically connected with the central monitor and used for sending alarm information when the temperature value exceeds a reasonable temperature range.
8. A monitoring system according to any of claims 5 to 7, wherein the signal output of the integrated probe is connected to the central monitor by a corrosion and interference resistant twisted pair.
9. The monitoring system of any one of claims 5 to 7, further comprising:
the wireless communication system comprises a wireless communication sending module, a wireless communication receiving module and a data transfer module;
the wireless communication sending module is electrically connected with a signal output end of the integrated probe, the wireless communication receiving module is electrically connected with the data transfer module, and the data transfer module is connected with the central monitor in a wired or wireless mode;
and the water quality parameter information acquired by the integrated probe is wirelessly transmitted to the data transfer module through the wireless communication sending module and the wireless communication receiving module.
10. The monitoring system according to claim 9, wherein when the data relay module is connected to the central monitor in a wired manner, specifically, the data relay module is connected to the central monitor in a wired manner through an RS485 communication cable;
when the data transfer module is connected to the central monitor in a wireless manner, specifically, the monitoring system further includes: the system comprises a GPRS module and a cloud server;
the GPRS module is in wired connection with the data transfer module through an RS232 or RS485 communication cable, and the GPRS module is connected with the cloud server through a wireless network;
the data transfer module can upload the water quality parameter information acquired by the integrated probe to the cloud server through the GPRS module; the central monitor can access the cloud server through a wireless network to obtain the water quality parameter information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911116643.1A CN111521522A (en) | 2019-11-15 | 2019-11-15 | Method and system for monitoring diffusion of oxidant in underground water |
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| CN201911116643.1A CN111521522A (en) | 2019-11-15 | 2019-11-15 | Method and system for monitoring diffusion of oxidant in underground water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049452A (en) * | 2021-04-15 | 2021-06-29 | 中国水利水电科学研究院 | Device and method for measuring and controlling diffusion range of cement-based grout in grouting of covering layer |
| CN116755478A (en) * | 2023-08-22 | 2023-09-15 | 华南师范大学 | Dissolved oxygen control method and system based on deep sea cultivation |
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2019
- 2019-11-15 CN CN201911116643.1A patent/CN111521522A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049452A (en) * | 2021-04-15 | 2021-06-29 | 中国水利水电科学研究院 | Device and method for measuring and controlling diffusion range of cement-based grout in grouting of covering layer |
| CN116755478A (en) * | 2023-08-22 | 2023-09-15 | 华南师范大学 | Dissolved oxygen control method and system based on deep sea cultivation |
| CN116755478B (en) * | 2023-08-22 | 2023-11-03 | 华南师范大学 | Dissolved oxygen control method and system based on deep sea cultivation |
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