CN216191325U - Water sample pretreatment system for high-turbidity wastewater online detection - Google Patents
Water sample pretreatment system for high-turbidity wastewater online detection Download PDFInfo
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- CN216191325U CN216191325U CN202122799592.6U CN202122799592U CN216191325U CN 216191325 U CN216191325 U CN 216191325U CN 202122799592 U CN202122799592 U CN 202122799592U CN 216191325 U CN216191325 U CN 216191325U
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Abstract
The utility model discloses a water sample pretreatment system for online detection of high-turbidity wastewater, which comprises a high-efficiency coagulant storage tank, a sample water clarifier, a flow cell, a detection instrument gauge outfit and an automatic control system, wherein the high-efficiency coagulant storage tank is connected with the sample water clarifier; the sampling point of the wastewater system is communicated with a sample water clarifier, the outlet of the high-efficiency coagulant storage tank is communicated with the sample water clarifier, the clarified water sample outlet in the middle of the sample water clarifier is communicated with a flow tank, a magnetic stirrer is arranged in the sample water clarifier, and the bottom sewage outlet of the sample water clarifier is communicated with a factory wastewater treatment system; a detection instrument electrode is arranged in the flow cell and is connected with a meter head of the detection instrument through a cable; the automatic control system is connected with the magnetic stirrer and the gauge head of the detection instrument, and can solve the problems caused by suspended matters and solid particles in the online detection process of high-turbidity wastewater, and improve the service life, the measurement accuracy and the stability of the online detection instrument.
Description
Technical Field
The utility model belongs to the technical field of chemical instrument online detection, and relates to a water sample pretreatment system for online detection of high-turbidity wastewater.
Background
During the operation of a thermal power plant, a large amount of industrial wastewater is generated, wherein during water treatment processes such as desulfurization wastewater treatment, coal-containing wastewater treatment and slag water treatment, the generated wastewater often contains a large amount of suspended matters and solid particles, so that the turbidity of the wastewater is high.
In various wastewater treatment process links, accurate online detection of inlet and outlet water quality plays an important role and significance in improving wastewater treatment effect, improving wastewater treatment efficiency and realizing standard wastewater discharge.
The high-turbidity waste water contains a large amount of suspended matters and solid particles, so that the following problems generally exist in the online detection process of water quality:
1. when a large amount of solid particles in a water sample pass through a flow cell of an online detection instrument, a rapid scouring effect is formed on an electrode of the online detection instrument, so that the surface of the detection electrode is abraded, and the service life of the detection electrode is seriously influenced under the long-time effect;
2. the existence of a large amount of solid particles and suspended matters in a water sample can interfere the detection process of some detection instruments, and finally the measurement error of the instruments is increased, so that the accuracy and the stability of the measurement of the instruments are influenced.
3. Part of colloidal substances often exist in suspended matters existing in a water sample, and when the electrodes of the detection instrument are washed away for a long time, the colloidal substances can be gradually attached to and accumulated on the surfaces of the detection electrodes, and finally, the detection electrodes are polluted and blocked, so that the detection effect of the detection electrodes is influenced, and the measurement error is caused.
In order to avoid the influence of suspended matters and solid particles in the high-turbidity wastewater on the accuracy and stability of online instrument detection, the mode of adding a filter at the water inlet end of an instrument detection electrode flow cell is generally adopted to treat the water sample of the high-turbidity wastewater at present. However, in this way, if the filter screen of the filter is too dense, although the filtering effect can be improved, the filter screen is often blocked in a short time, so that the sample water cutoff online detection instrument in the flow cell cannot work normally, and the filter screen of the filter needs to be cleaned and maintained frequently by manpower; if the filter screen of the filter is too loose, the filtering effect of the filter screen is greatly reduced, the removal effect on suspended matters and solid particles is poor, and the influence of the suspended matters and the solid particles in the water sample on an online detection instrument still exists.
Therefore, a water sample pretreatment system for online detection of high-turbidity wastewater needs to be developed, so that various problems caused by suspended matters and solid particles in the online detection process of the high-turbidity wastewater can be fundamentally solved, and the service life, the measurement accuracy and the stability of the online detection instrument for the high-turbidity wastewater are obviously improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a water sample pretreatment system for online detection of high-turbidity wastewater, which can solve the problems caused by suspended matters and solid particles in the online detection process of the high-turbidity wastewater and improve the service life, the measurement accuracy and the stability of an online detection instrument.
In order to achieve the aim, the water sample pretreatment system for the online detection of the high-turbidity wastewater comprises an efficient coagulant storage tank, a sample water clarifier, a flow cell, a detection instrument gauge outfit and an automatic control system;
the sampling point of the wastewater system is communicated with a sample water clarifier, the outlet of the high-efficiency coagulant storage tank is communicated with the sample water clarifier, the clarified water sample outlet in the middle of the sample water clarifier is communicated with a flow tank, a magnetic stirrer is arranged in the sample water clarifier, and the bottom sewage outlet of the sample water clarifier is communicated with a factory wastewater treatment system; a detection instrument electrode is arranged in the flow cell and is connected with a meter head of the detection instrument through a cable; the automatic control system is connected with the magnetic stirrer and the gauge head of the detection instrument.
The sampling point of the wastewater system is communicated with the sample water clarifier through a sample injection electromagnetic valve, and the automatic control system is connected with the sample injection electromagnetic valve.
The outlet of the high-efficiency coagulant storage tank is communicated with the sample water clarifier through a coagulant quantitative injection pump, and the automatic control system is connected with the coagulant quantitative injection pump.
The sample water clarifier is provided with a liquid level controller, and the automatic control system is connected with the liquid level controller.
The clarified water sample outlet in the middle of the sample water clarifier is communicated with the flow cell through a sample outlet electromagnetic valve and a sample water delivery pump, and the automatic control system is connected with the sample outlet electromagnetic valve and the sample water delivery pump.
The bottom drain outlet of the sample water clarifier is communicated with a whole-plant wastewater treatment system through a drain electromagnetic valve and a drain peristaltic pump, and an automatic control system is connected with the drain electromagnetic valve and the drain peristaltic pump.
The utility model has the following beneficial effects:
when the water sample pretreatment system for the online detection of the high-turbidity wastewater is specifically operated, the high-turbidity wastewater is introduced into the sample water clarifier, then the coagulant is added, and the sample water in the sample water clarifier is coagulated and clarified under the action of the magnetic stirrer, wherein the clarified clear water enters the flow cell for detection, so that the phenomena that suspended matters in the sample water wash and wear an instrument detection electrode and the possibility of electrode fouling and blocking caused by the fact that the suspended matters are attached to the surface of the instrument detection electrode are avoided; the interference of suspended matters in the sample water to the measuring process of the detection electrode is eliminated, the service life of the electrode of the detection instrument is prolonged, and the measuring precision and accuracy of the online detection instrument are effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a high-efficiency coagulant storage tank, 2 is a coagulant quantitative injection pump, 3 is a sample injection electromagnetic valve, 4 is a liquid level controller, 5 is a sample water clarifier, 6 is a magnetic stirrer, 7 is a sample outlet electromagnetic valve, 8 is a sewage discharge electromagnetic valve, 9 is a sample water delivery pump, 10 is a sewage discharge peristaltic pump, 11 is a flow cell, 12 is a detection instrument electrode, 13 is a detection instrument gauge outfit, and 14 is an automatic control system.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the utility model. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the water sample pretreatment system for online detection of high turbidity wastewater of the present invention comprises a high efficiency coagulant storage tank 1, a coagulant quantitative injection pump 2, a sample introduction solenoid valve 3, a liquid level controller 4, a sample water clarifier 5, a magnetic stirrer 6, a sample outlet solenoid valve 7, a sewage discharge solenoid valve 8, a sample water delivery pump 9, a sewage discharge peristaltic pump 10, a flow cell 11, a detection instrument electrode 12, a detection instrument head 13 and an automatic control system 14;
the sampling point of the wastewater system is communicated with a sample water clarifier 5 through a sampling electromagnetic valve 3, the outlet of a high-efficiency coagulant storage tank 1 is communicated with the sample water clarifier 5 through a coagulant quantitative injection pump 2, a liquid level controller 4 is arranged on the sample water clarifier 5, the clarified water sample outlet at the middle part of the sample water clarifier 5 is communicated with a flow tank 11 through a sample outlet electromagnetic valve 7 and a sample water delivery pump 9, a magnetic stirrer 6 is arranged in the sample water clarifier 5, and the bottom sewage outlet of the sample water clarifier 5 is communicated with a whole plant wastewater treatment system through a sewage discharge electromagnetic valve 8 and a sewage discharge peristaltic pump 10.
The flow cell 11 is internally provided with a detection instrument electrode 12, and the detection instrument electrode 12 is connected with a detection instrument gauge head 13 through a cable.
The automatic control system 14 is connected with the coagulant quantitative injection pump 2, the sample injection electromagnetic valve 3, the liquid level controller 4, the magnetic stirrer 6, the sample outlet electromagnetic valve 7, the sewage discharge electromagnetic valve 8, the sample water delivery pump 9, the sewage discharge peristaltic pump 10 and the detection instrument head 13.
The working process of the utility model is as follows:
when the device works, high-turbidity wastewater output by a sampling point of a wastewater system enters a sample water clarifier 5 through a sample injection electromagnetic valve 3, the sample injection electromagnetic valve 3 is closed when the sample water in the sample water clarifier 5 is controlled to be injected to a preset height by a liquid level controller 4, the high-efficiency coagulant in a high-efficiency coagulant storage tank 1 is added into the sample water clarifier 5 through a coagulant quantitative injection pump 2, and the sample water is stirred by a magnetic stirrer 6 to improve the clarification effect of the sample water, so that the sample water in the sample water clarifier 5 is coagulated and clarified.
The clarified clear sample water is located at the upper part of the sample water clarifier 5, the turbid liquid is located at the lower part of the sample water clarifier 5, the sample outlet electromagnetic valve 7 is opened, the clear sample water is conveyed to the flow cell 11 through the sample water conveying pump 9, the excessive clear sample water is discharged into a whole plant wastewater treatment system, the detection instrument electrode 12 is installed in the flow cell 11, and a signal obtained by detection of the detection instrument electrode 12 is displayed through the detection instrument gauge head 13.
And after one water sample is detected, closing the sample outlet electromagnetic valve 7, opening the sewage discharge electromagnetic valve 8, and discharging the turbid liquid to a whole plant wastewater treatment system through the sewage discharge peristaltic pump 10.
The automatic control system 14 controls the water inflow of the sample water clarifier 5 through the liquid level controller 4, controls the medicine feeding amount of the high-efficiency coagulant by controlling the running time of the coagulant quantitative injection pump 2, and controls the stirring clarification process by controlling the stirring time of the magnetic stirrer 6 so as to realize the optimal clarification effect of the sample water; the on-line detection of the clarified sample water is realized by controlling the opening and closing of the sample outlet electromagnetic valve 7, the running time of the sample water delivery pump 9, the opening and closing of the sewage discharge electromagnetic valve 8, the running time of the sewage discharge peristaltic pump 10 and the detection frequency of the meter head 13.
Claims (7)
1. A water sample pretreatment system for online detection of high-turbidity wastewater is characterized by comprising a factory-wide wastewater treatment system, a high-efficiency coagulant storage tank (1), a sample water clarifier (5), a flow cell (11), a detection instrument gauge outfit (13) and an automatic control system (14);
a sampling point of the wastewater system is communicated with a sample water clarifier (5), an outlet of the high-efficiency coagulant storage tank (1) is communicated with the sample water clarifier (5), a clarified water sample outlet in the middle of the sample water clarifier (5) is communicated with a circulation tank (11), a magnetic stirrer (6) is arranged in the sample water clarifier (5), and a drain outlet at the bottom of the sample water clarifier (5) is communicated with a whole-plant wastewater treatment system; a detection instrument electrode (12) is arranged in the flow cell (11), and the detection instrument electrode (12) is connected with a detection instrument gauge head (13); the automatic control system (14) is connected with the magnetic stirrer (6) and the gauge head (13).
2. The water sample pretreatment system for the online detection of high turbidity wastewater according to claim 1, wherein a sampling point of the wastewater system is communicated with the sample water clarifier (5) through a sample electromagnetic valve (3), and the automatic control system (14) is connected with the sample electromagnetic valve (3).
3. The water sample pretreatment system for the online detection of high turbidity wastewater according to claim 1, wherein the outlet of the high efficiency coagulant storage tank (1) is communicated with the sample water clarifier (5) through a coagulant quantitative injection pump (2), and the automatic control system (14) is connected with the coagulant quantitative injection pump (2).
4. The water sample pretreatment system for the online detection of high turbidity wastewater according to claim 1, wherein the sample water clarifier (5) is provided with a liquid level controller (4), and the automatic control system (14) is connected with the liquid level controller (4).
5. The water sample pretreatment system for the online detection of high turbidity wastewater according to claim 1, wherein a clarified water sample outlet in the middle of the sample water clarifier (5) is communicated with the flow cell (11) through a sample outlet electromagnetic valve (7) and a sample water delivery pump (9), and the automatic control system (14) is connected with the sample outlet electromagnetic valve (7) and the sample water delivery pump (9).
6. The water sample pretreatment system for the online detection of high turbidity wastewater according to claim 1, wherein a drain outlet at the bottom of the sample water clarifier (5) is communicated with the whole plant wastewater treatment system through a drain electromagnetic valve (8) and a drain peristaltic pump (10), and the automatic control system (14) is connected with the drain electromagnetic valve (8) and the drain peristaltic pump (10).
7. A water sample pretreatment system for high turbidity wastewater on-line detection according to claim 1, wherein the instrumentation electrode (12) is connected with the instrumentation head (13) through a cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122799592.6U CN216191325U (en) | 2021-11-15 | 2021-11-15 | Water sample pretreatment system for high-turbidity wastewater online detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122799592.6U CN216191325U (en) | 2021-11-15 | 2021-11-15 | Water sample pretreatment system for high-turbidity wastewater online detection |
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| CN216191325U true CN216191325U (en) | 2022-04-05 |
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| CN202122799592.6U Active CN216191325U (en) | 2021-11-15 | 2021-11-15 | Water sample pretreatment system for high-turbidity wastewater online detection |
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| CN (1) | CN216191325U (en) |
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- 2021-11-15 CN CN202122799592.6U patent/CN216191325U/en active Active
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