CN113155231A - Monitoring method and monitoring device for increasing amount of sediment level of black and odorous water body - Google Patents
Monitoring method and monitoring device for increasing amount of sediment level of black and odorous water body Download PDFInfo
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- CN113155231A CN113155231A CN202110423336.9A CN202110423336A CN113155231A CN 113155231 A CN113155231 A CN 113155231A CN 202110423336 A CN202110423336 A CN 202110423336A CN 113155231 A CN113155231 A CN 113155231A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000012806 monitoring device Methods 0.000 title claims abstract description 61
- 238000012544 monitoring process Methods 0.000 title claims abstract description 49
- 239000013049 sediment Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 24
- 239000011229 interlayer Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 24
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000008239 natural water Substances 0.000 abstract description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 9
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000004332 silver Substances 0.000 description 8
- 239000002344 surface layer Substances 0.000 description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- 230000033116 oxidation-reduction process Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 239000010419 fine particle Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- UUWCBFKLGFQDME-UHFFFAOYSA-N platinum titanium Chemical compound [Ti].[Pt] UUWCBFKLGFQDME-UHFFFAOYSA-N 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A monitoring method and a monitoring device for increasing the sludge level of bottom mud of a black and odorous water body comprise a detection rod with a hollow structure, wherein an indicator lamp is fixedly arranged at the top of the detection rod, a cathode electrode, an anode electrode group and a limiting ring are fixedly arranged on the circumferential outer wall of the detection rod from top to bottom in sequence, an electric control system is fixedly arranged in a hollow inner cavity of the detection rod, and a pointed cone is coaxially manufactured at the bottom of the detection rod; the anode electrode group comprises a plurality of anode electrode insulating interlayer plates and platinized titanium alloy electrode plates, wherein the anode electrode insulating interlayer plates and the platinized titanium alloy electrode plates are alternately arranged, axially compressed and circumferentially fixed and sleeved on the circumferential outer wall of the upper part of the detection rod; the electric control system is respectively and electrically connected with the indicator lamp, the cathode electrode and each platinum-plated titanium alloy electrode plate; this monitoring devices uses the monitoring index as the sediment mud position of redox potential for the first time to the biggest two electrodes of potential difference measure sediment top surface height around the monitoring, are fit for the long-term fixed monitoring of most natural water or artifical water.
Description
Technical Field
The invention relates to the technical field of water quality environment monitoring, in particular to a method and a device for monitoring the increment of sediment level of black and odorous water.
Background
The water body sediment increment is an important index for monitoring the water quality of the water body, the thickness of a sludge layer is continuously monitored by adopting an ultrasonic sensor and an echo processing technology in the prior art, but the maximum defect of ultrasonic waves is that the interference factors are more, and when the turbidity of the water body is larger, the phenomenon of extremely instability occurs in ultrasonic echo monitoring, so that the monitoring precision is greatly influenced. In addition, the interface determination is carried out by utilizing the difference between the sludge and the water body pressure, but the surface water content is extremely high in the bottom sludge forming process, the difference between the surface pressure and the water pressure is not obvious, and the misjudgment is easy to carry out.
Through published patent searches, the following comparison documents were found:
CN206680943U discloses a water conservancy sludge early warning and cleaning device, which comprises a river channel, river banks arranged at two sides of the river channel, a support fixedly arranged above the river banks, a dredging pipeline movably arranged on the support, an electric block fixedly arranged above one side of the dredging pipeline, a connecting wire and a dredging pipeline fixedly connected with the electric block, and a dredging pipeline fixing ring arranged at one side of the support; the method is characterized in that: a fixed rod is arranged on the left side of the river channel, and a pressure probe is arranged at the lower end of the fixed rod; the top of the bracket is provided with a signal collector and an alarm; one end of the dredging pipeline is connected with a sludge pump arranged in the river channel, the lower end of the other end of the dredging pipeline is provided with a sludge concentration tank, and a screw pump is arranged in the sludge concentration tank; the screw pump is connected with a belt filter press in the dewatering pool through a mud conveying pipeline. The utility model discloses a use is simple and convenient, can alleviate the consumption of manpower greatly.
Through the analysis, the silt early warning device of decontaminating in the above-mentioned patent that discloses compares with this application, is all inequality in structure and function, especially there is great difference in the monitoring method step and the monitoring devices structure of bed mud thickness increment, consequently does not influence the novelty of this application.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a method and a device for monitoring the sediment level increment of black and odorous water, which use the oxidation-reduction potential as the monitoring index of the sediment level for the first time, are suitable for long-term fixed monitoring of most natural water bodies or artificial water bodies, and avoid the trouble of error enlargement caused by frequent replacement of the device.
A method for monitoring the increment of the sediment level of black and odorous water comprises the following steps:
the method comprises the following steps: firstly, a battery is arranged in a monitoring device, the monitoring device is started, a top indicator lamp is observed to start to flicker very slowly, and the monitoring device starts to work at the moment; starting a timing circuit, and after a certain time interval, sending a monitoring instruction by a processor to rapidly measure the oxidation-reduction potential between the anode and the cathode in all monitoring devices so as to ensure that all the anodes and the cathodes work normally;
step two: inserting a plurality of monitoring devices into the bottom sediment of the water body of the water area to be monitored at intervals, wherein the monitoring devices can be directly and manually inserted into the bottom sediment of the place to be monitored, or an extension rod can be externally connected to the top of the monitoring devices for deep operation; when the limit ring on the monitoring device is in contact with the sediment, the monitoring device is forcibly inserted downwards for a small distance, so that the sediment is in contact with the platinized titanium alloy electrode; at the moment, the processor sends out a monitoring instruction, identifies the two anodes with the largest potential difference, and records and outputs the anode electrode numbers; defining the anode electrode number as the initial mud level height of the bottom mud; recording and outputting the current angle measured by the gyroscope;
step three: after a period of time, respectively detecting the potential values of a plurality of monitoring devices, marking the elevation of the sediment at different positions of the monitored water area by taking the variable quantity of the potential values as a judgment standard, identifying two positive electrodes with the largest potential difference, and recording and outputting the electrode numbers; the anode electrode number and the angle calculation value of the monitoring device are defined as the sediment level elevation after the sediment thickness increment.
A monitoring device adopted in a monitoring method for increasing the sludge level of bottom mud of a black and odorous water body comprises a detection rod with a hollow structure, an indicator lamp is fixedly arranged at the top of the detection rod, a cathode electrode, an anode electrode group and a limiting ring are fixedly arranged on the circumferential outer wall of the detection rod from top to bottom in sequence, an electric control system is fixedly arranged in a hollow inner cavity of the detection rod, and a pointed cone is coaxially manufactured at the bottom of the detection rod; the anode electrode group comprises a plurality of anode electrode insulating interlayer plates and platinized titanium alloy electrode plates, wherein the anode electrode insulating interlayer plates and the platinized titanium alloy electrode plates are alternately arranged, axially compressed and circumferentially fixed and sleeved on the circumferential outer wall of the upper part of the detection rod; the electric control system is respectively and electrically connected with the indicator light, the cathode electrode and each platinum-plated titanium alloy electrode plate.
And the limiting ring is coaxial and fixedly sleeved on the circumferential outer wall of the middle part of the detection rod, and a plurality of axially through round holes are axially formed in the limiting ring.
The invention has the advantages and technical effects that:
the invention relates to a method and a device for monitoring the increment of the sludge level of black and odorous water, which firstly use the oxidation-reduction potential as the monitoring index of the sludge level of bottom sludge, sequentially contact a plurality of layers of platinized titanium alloy electrode plates arranged at intervals in the thickening process of the bottom sludge to detect the oxidation-reduction potential of a cathode electrode and an anode electrode group so as to judge the height of the top surface of the bottom sludge, and the height subtracts the initial contact height of the bottom sludge and the anode electrode group when the monitoring device is initially installed in the bottom sludge, namely the thickness increment of the bottom sludge in a certain area of the water area in the period of time, thereby realizing the functions of detecting the elevation of the sludge level of the bottom sludge and accurately detecting the height change of a riverbed.
According to the monitoring method and the monitoring device for the sediment level increment of the black and odorous water body, a brand-new monitoring device is developed, the monitoring of the redox index can be effectively completed, the function of preventing suspended fine particles in the water body from settling and attaching to the surface of an electrode is achieved, the monitoring device is suitable for long-term fixed monitoring of most natural water bodies or artificial water bodies, the trouble that errors are increased due to frequent replacement is avoided, the monitoring device is suitable for the condition that the surface layer of the sediment displays light black or deep black, the problem that the water quality of the black and odorous water body is poor (the transparency is low, the number of suspended particle substances is large) is effectively avoided, and the problem that the errors are large in the traditional method is selected. During monitoring, the ORP of the water body is a positive value or a slightly negative value, the ORP shows a negative value after the anode electrode contacts the mud level, and the negative value state is kept within a certain time, so that whether the anode electrode contacts the surface of the sediment can be judged according to the potential difference of the anode electrode and the cathode electrode. The upper computer captures the time for the ORP value to rapidly decrease, records the electrode section with sudden change, and determines the sediment level elevation; and finally, the monitoring device only needs to ensure that the bottom mud is inserted without angle change, and the monitoring result is not influenced by whether the device is in a vertical form, so that the device is greatly convenient for field operators to operate and run. It should be noted that when the monitoring device is used, the point position which needs to be focused is generally selected, and the monitoring mode which aims at single use or gridding multiple uses is performed.
Drawings
FIG. 1 is a schematic view of a test rod according to the present invention;
FIG. 2 is a partial cross-sectional view of a test rod of the present invention;
FIG. 3 is a top view of the stop collar of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 1 at A;
FIG. 5 is a schematic diagram of the principle of potential information collection according to the present invention;
FIG. 6 is a system frame diagram of the electronic control unit of the present invention;
7-9 are comparative analysis graphs of ORP values of water and sediment surface layers acquired in the course of monitoring the sediment thickness increment of the riverways of a, b and c according to the invention;
in the figure: 1-an indicator light; 2-a cathode electrode; 3-a detection rod; 4-slow release porous ceramic; 5-positive electrode group; 6-a limiting ring; 7-pointed cone; 8-a battery; 9-an electronic control system; 10-a circular hole; 11-anode separator plate; 12-platinized titanium alloy electrodes; 13-a conductive wire; 14-electrons are slowly released; 15-a microprocessor.
Detailed Description
For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are to be considered in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
A method for monitoring the increment of the sediment level of black and odorous water comprises the following steps:
the method comprises the following steps: firstly, a battery 8 is arranged in a monitoring device, the monitoring device is started, the top indicator lamp 1 is observed to start flashing very slowly, and the monitoring device starts to work at the moment; starting a timing circuit, and after a certain time interval, sending a monitoring instruction by a processor to rapidly measure the oxidation-reduction potential between the anode and the cathode in all monitoring devices so as to ensure that all the anodes and the cathodes work normally;
step two: inserting a plurality of monitoring devices into the bottom sediment of the water body of the water area to be monitored at intervals, wherein the monitoring devices can be directly and manually inserted into the bottom sediment of the place to be monitored, or an extension rod can be externally connected to the top of the monitoring devices for deep operation; when the limit ring on the monitoring device is in contact with the sediment, the monitoring device is forcibly inserted downwards for a small distance, so that the sediment is in contact with the platinized titanium alloy electrode; at the moment, the processor sends out a monitoring instruction, identifies the two anodes with the largest potential difference, and records and outputs the anode electrode numbers; defining the anode electrode number as the initial mud level height of the bottom mud; recording and outputting the current angle measured by the gyroscope;
step three: after a period of time, respectively detecting the potential values of a plurality of monitoring devices, marking the elevation of the sediment at different positions of the monitored water area by taking the variable quantity of the potential values as a judgment standard, identifying two positive electrodes with the largest potential difference, and recording and outputting the electrode numbers; the anode electrode number and the angle calculation value of the monitoring device are defined as the sediment level elevation after the sediment thickness increment.
A monitoring device adopted in a monitoring method of sludge level increment of bottom mud of a black and odorous water body comprises a detection rod 3 with a hollow structure, an indicator lamp is fixedly arranged at the top of the detection rod, a cathode electrode 2, an anode electrode group 5 and a limiting ring 6 are fixedly arranged on the circumferential outer wall of the detection rod from top to bottom in sequence, an electric control system 9 is fixedly arranged in a hollow inner cavity of the detection rod, and a pointed cone 7 is coaxially manufactured at the bottom of the detection rod; the anode electrode group comprises a plurality of anode electrode insulating interlayer plates 11 and platinized titanium alloy electrode plates 12, wherein the anode electrode insulating interlayer plates and the platinized titanium alloy electrode plates are alternately arranged, axially compressed and circumferentially fixed and sleeved on the circumferential outer wall of the upper part of the detection rod; the electric control system is respectively and electrically connected with the indicator light, the cathode electrode and each platinum-plated titanium alloy electrode plate.
And, the spacing ring is coaxial and fixed cover dress on the circumference outer wall in the middle part of the measuring pole, and the axial system has a plurality of axially through-going round holes 10 on this spacing ring.
In addition, the cathode electrode is preferably a silver/silver chloride electrode in the prior art, the silver/silver chloride conductive medium in the cathode electrode is in a liquid state, and the silver/silver chloride conductive medium is slowly released from the slow-release porous ceramic 4 at the bottom of the silver/silver chloride electrode and carries out electrochemical reaction.
In order to more clearly illustrate the specific embodiments of the present invention, the following examples are provided:
according to the monitoring method and the monitoring device for the sludge level increment of the bottom mud of the black and odorous water body, an electrochemical device is arranged for collecting environmental data according to the characteristics of accuracy and rapidity of electrochemical monitoring. The device mainly comprises an electrochemical device which is formed by a platinum-plated titanium alloy electrode of an anode electrode group and a silver/silver chloride electrode of a cathode electrode in a water body, and different potential differences of the anode electrode and the cathode electrode can indirectly reflect the environmental state around the anode electrode and the cathode electrode. The device is provided with a plurality of anode electrodes on an anode electrode group, a single cathode electrode is arranged on the top of the device, an internal circuit is formed by connecting each anode electrode with the cathode electrode through an electrode acquisition module in an electric control unit, and the cathode electrode of an external circuit is connected with the anode electrode through water or mud in the environment to form a loop at the other end of the device.
The working principle of the monitoring device is as follows: because the fixed difference existing in solid and liquid states in nature is inevitable, when solid bottom mud substances contact the platinum-titanium alloy plated anode electrode, the potential between the solid bottom mud substances and the silver/silver chloride cathode electrode is inevitably changed violently, and the change direction of the numerical value is negative. By utilizing the characteristic, the electric control unit detects the potential of each electrode twice within a certain time interval, and quickly detects two adjacent anode electrodes with the largest potential difference, and the elevation value of the anode electrode with a lower value is the position of the sediment surface layer. When the sediment level rises and the sediment contacts a new anode electrode, an electrochemical group with an originally negative ORP value still maintains the original state, but the ORP value of the electrochemical group consisting of the new anode electrode and a cathode electrode is rapidly reduced, and the difference between the ORP value and the ORP value of the electrochemical group of a higher order is maximum; when the sediment level is lowered, the ORP of the newly formed electrochemical set is changed rapidly, and the difference with the ORP value of the electrochemical set of the lower order becomes maximum.
The anode electrode group is arranged in a mode that an anode electrode interlayer plate 11 and a platinized titanium alloy electrode 12 are alternated, and the diameter of the electrode is smaller than that of the interlayer plate, and the diameter of the platinized titanium alloy electrode is the same, so that the shape changes the flow direction of the water body which is locally close to the device, the flow speed of the water body flowing on the surface of the anode electrode is increased, and the sedimentation of particles in the water body is effectively prevented.
The silver electrode in the cathode electrode is soaked in the silver chloride solution, the slow-release porous ceramic is arranged at the bottom, the connection between the solution in the electrode and an external water body can be ensured, the silver chloride solution in the cathode electrode forms slow-release electrons 14 in water, and the electrode failure caused by the rapid diffusion of the solution in the electrode cannot be caused. The structure can lead the solution released by the cathode electrode to carry electrons to be connected with the anode electrode through a circuit formed by an external environment, and the microprocessor 15 in the electric control unit is respectively connected with the cathode electrode and each layer of platinized titanium alloy electrode through a conducting wire, thereby being combined with an internal circuit to form a loop.
In addition, preferably, the electronic control unit is composed of a circuit system and a timing circuit in the prior art, and specifically includes:
1. GNSS positioning part: the positioning part is a GT-U12 dual-frequency GNSS positioning module, and different positioning systems can be selected according to the actual monitoring site requirement and the device compatibility consideration. The positioning module is arranged above the floating plate, is connected with the positioning module through an external antenna and is powered by a battery.
2. The remote control feedback part: the remote control feedback part is a singlechip. The system mainly comprises a 64-bit quad-core microprocessor 15, a BROADCOM BCM2837, an ASK remote control transmitting module, an ASK remote control receiving module, a GPRS signal uploading module and a memory module IC, wherein the IC model IS IS62WV51216BLL-55TL IC.
3. A gyroscope: the circuit board is coupled with the MEME micro-electromechanical gyroscope STLY 3200 ALH.
In addition, the present invention is preferably such that, in the detection process:
1. firstly, a battery is arranged in a monitoring device, the device is started, a top indicator lamp is observed to start to flicker very slowly, and the monitoring device starts to work at the moment;
2. and setting a program and selecting a proper monitoring time interval. The program starts the timing circuit, after a certain time interval, the processor sends out a monitoring command, quickly measures the oxidation-reduction potentials between all the positive electrodes and the negative electrodes, identifies the two positive electrodes with the largest potential difference, and records and outputs the electrode numbers (the system numbers all the electrodes from bottom to top, and the output numbers can be directly converted into elevation values).
3. The monitoring device is inserted into the sediment at the bottom of the water body, and at the moment, the monitoring device can be directly and manually inserted into the sediment of a place to be monitored, and other rods can be externally connected to the top of the monitoring device for depth operation. When the limit ring is in contact with the bottom mud obviously, the monitoring device is inserted downwards by a small distance forcibly, so that the bottom mud is in contact with the platinized titanium alloy electrode (in the device, the platinized titanium alloy electrode is an anode electrode, and the silver/silver chloride electrode is used as a cathode electrode), and the monitoring device is ensured to be vertical as far as possible in the process.
In addition, the invention is preferable, the small round hole on the limiting ring has two functions, firstly, the biochemical reaction of the local bottom sediment is not influenced as much as possible, and the influence of the monitoring device on the primary bottom sediment is reduced; secondly, when the monitoring device is inserted into bottom mud, the monitoring point position is soft due to local pressure, the bottom mud sinks, a small pit is formed in the point position, the bottom mud increment monitoring effect is influenced, unbalance of the local pressure can be greatly relieved due to the existence of the small circular hole, the bottom mud below the limiting ring can penetrate through the small hole to the upper side of the limiting ring, and the pressure pit is avoided.
In addition, the invention is preferable that a vibration dustproof function can be added on the detection rod, and a high-frequency direct-current vibration eccentric motor is fixedly installed in the detection rod.
In addition, the output signal can be preferably uploaded to an upper computer through a GPSR signal uploading module, and can also be communicated through an RS232/RS485 or bipolar current loop, so that the integrated remote data transmission capability of the control circuit board is realized.
In addition, the monitoring device can be used repeatedly after being used, so that the monitoring cost is saved. For the situation that inorganic pollutants in the water body are more, the electrode can be immersed in 0.1mol/L dilute hydrochloric acid for 30min, cleaned by pure water and immersed in 3.5mol/L potassium chloride solution for 6 hours. Under the condition of serious organic oil stain and oil film pollution in the prior water body, the platinum or gold surface can be cleaned by a detergent, then cleaned by pure water, and then soaked in 3.5mol/L potassium chloride solution for 6 hours for use. The platinum or gold surface can be polished by toothpaste, then cleaned by pure water, and soaked in 3.5mol/L potassium chloride solution for 6 hours for reuse.
Finally, the experimental data for monitoring the sediment increment by adopting a potential monitoring means for water bodies in different areas are shown in the following table (unit mV):
the ORP of the bottom mud surface layer in the natural water body and the ORP of the water body have obvious rules from the table: the ORP of the bottom mud surface layer is always maintained between-450 and-350, and the ORP of the river water body is always maintained above 100. In extreme cases, the ORP value of the water body is lower than 0, but the difference between the ORP value and the ORP value of the bottom mud surface layer can be kept large. In the case of long-term stable monitoring, occasional phenomena of monitoring data fluctuations can be filtered using post-processing data. Therefore, the law that an obvious difference exists between the ORP of the bottom mud surface layer of the river channel and the ORP of the water body of the river channel can be effectively utilized on the monitoring device to monitor the liquid-solid interface of the bottom mud and the water body.
And fig. 7-9 show relevant data obtained by performing a bottom sludge ORP simulation experiment on the primary bottom sludge and the water body of the three rivers (a, b and c) under the pilot-scale test condition in a laboratory, wherein two ORP integrated electrodes are arranged in the experiment and are respectively positioned on the surface layer of the bottom sludge and at a position 50cm above the position, and ORP values are recorded at fixed time intervals. As can be seen from the figure, the bottom mud surface ORP of the three rivers of a, b and c and the water body ORP of the river keep large difference, and the fluctuation of the bottom mud surface ORP is small, so that the bottom mud increment data obtained by adopting a potential difference analysis method is more accurate and reliable compared with the bottom mud increment monitoring methods of ultrasonic waves and the like in the prior art.
Finally, the invention adopts the mature products and the mature technical means in the prior art.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877796A (en) * | 2021-12-09 | 2022-08-09 | 长沙理工大学 | A rapid determination method of sludge thickness based on redox potential |
| CN115096769A (en) * | 2022-08-26 | 2022-09-23 | 北京博汇特环保科技股份有限公司 | Device and method for measuring sludge sedimentation performance based on current |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114877796B (en) * | 2021-12-09 | 2024-01-12 | 长沙理工大学 | Sludge thickness rapid determination method based on oxidation-reduction potential |
| CN115096769A (en) * | 2022-08-26 | 2022-09-23 | 北京博汇特环保科技股份有限公司 | Device and method for measuring sludge sedimentation performance based on current |
| CN115096769B (en) * | 2022-08-26 | 2023-01-17 | 北京博汇特环保科技股份有限公司 | Device and method for measuring sludge sedimentation performance based on current |
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