CN216946362U - Online monitoring device for high-density clarification tank - Google Patents
Online monitoring device for high-density clarification tank Download PDFInfo
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- CN216946362U CN216946362U CN202220708378.7U CN202220708378U CN216946362U CN 216946362 U CN216946362 U CN 216946362U CN 202220708378 U CN202220708378 U CN 202220708378U CN 216946362 U CN216946362 U CN 216946362U
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Abstract
The utility model discloses an on-line monitoring device for a high-density clarification tank, which comprises a flow meter and a turbidity meter arranged at the inlet of the clarification tank, a sludge concentration meter arranged in a flocculation area, a high-definition camera and a pH meter arranged in a plug-flow area, a high-definition camera arranged in a clear water area, a sludge level meter arranged in a concentration separation area, a sludge concentration meter arranged in a clarification tank and a turbidity meter arranged at the outlet of the clarification tank. And (3) accessing the online data and information to a pretreatment online monitoring system, and guiding to adjust the dosage of coagulant, coagulant aid and lime in the clarification tank and the sludge discharge period so as to stabilize the turbidity of the effluent of the clarification tank within a standard range. The utility model discloses a device is used the back, can solve the play water quality of water that clarification equipment operation control's hysteresis quality, blindness and randomness lead to and can not be up to standard and undulant problem, guarantees follow-up equipment normal operating, and the improve equipment operation economy and the stability that can be very big have fine economic environmental protection benefit.
Description
Technical Field
The utility model relates to coagulation and clarification equipment for water treatment in a thermal power plant, in particular to an online monitoring device for a high-density clarification tank.
Background
The coagulation clarification treatment is the first treatment process of a boiler feedwater treatment system of a power plant and aims to remove substances such as hardness, alkalinity, organic matters, microorganisms, colloids, suspended matters, silt and the like in raw water through the technological processes of coagulation, flocculation, clarification and the like. At present, coagulation clarification equipment generally has the problems of poor operation effect, poor quality of effluent water or standard effluent water, but still influences the normal operation of subsequent equipment, and no effective monitoring means exists.
Most of domestic thermal power plants are provided with high-density clarification tanks, and the operation effect of most of the existing clarification tanks is not ideal. The main reason is that the power plant has no scientific equipment process parameter detection and monitoring means, can not obtain and adjust the real-time parameters of the coagulation clarification process in time, has serious lag and blindness of manual inspection and adjustment, and can not realize real-time and fine adjustment control and the like. Factors influencing the operation effect of the clarification tank are more, and various parameters in the coagulation clarification process need to be adjusted to a certain range and a balanced state to ensure that the effluent quality of the clarification tank reaches the design specification. The operating personnel of the power plant are in short supply, the analysis and the detection of the process parameters such as the water quality of inlet and outlet water of the clarification tank, the sludge concentration and the like can not be carried out for a plurality of times per shift, and the operating condition of the clarification tank can not be mastered in time. Therefore, it is an urgent need of power plants to remotely monitor and improve the treatment effect of the clarification tank in real time.
Disclosure of Invention
In order to solve the problems existing in the operation of the conventional coagulation clarification equipment, the utility model aims to provide the on-line monitoring device for the process parameters of the high-density clarification tank, so as to solve the problem that the quality of effluent water produced by long-term operation of the clarification tank cannot reach the standard due to the hysteresis, blindness and randomness of operation control of the clarification tank and the incapability of timely controlling the dosage and the sludge discharge.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an online monitoring device of a high-density clarification tank comprises a coagulation zone 1, a flocculation zone 2, a plug flow zone 3, a concentration separation zone 4 and a clear water zone 5 which are sequentially separated from water inlet to water outlet through concrete, wherein the clear water zone 5 is positioned at the upper part of the concentration separation zone 4, and the bottoms of the coagulation zone 1 and the flocculation zone 2 are communicated through a pipeline; the influent water passes through the coagulation zone 1, the flocculation zone 2 and the plug flow zone 3 in sequence, reaches the concentration separation zone 4 after being mixed and flocculated, sludge is settled to a bottom concentration hopper, and clarified water rises to a clear water zone 5;
an inlet of the condensation zone 1 is provided with a water inlet turbidity meter 8 and a flow meter 9, and the condensation zone 1 is connected with a coagulant dosing pump 16;
a first sludge concentration meter 10 is arranged in the flocculation area 2, and the flocculation area 2 is connected with a lime dosing pump 17 and a coagulant aid dosing pump 18;
a pH meter 19 is arranged in the thrust zone 3, and a first high-definition camera 11 is arranged above the water surface;
a second sludge concentration meter 12 and a sludge level meter 13 are arranged in the concentration and separation area 4;
a second high-definition camera 14 is arranged above the water surface of the clear water area 5;
an outlet of the clear water area 5 is provided with a water outlet turbidity meter 15;
a sludge reflux pump 6 is arranged on a communication pipeline between a communication pipeline at the bottoms of the condensation zone 1 and the flocculation zone 2 and a communication pipeline between a concentration hopper at the bottom of the concentration and separation zone 4, and a sludge discharge pump 7 is arranged at an outlet of the concentration hopper at the bottom of the concentration and separation zone 4;
the system comprises a water inlet turbidity meter 8, a flow meter 9, a first sludge concentration meter 10, a first high-definition camera 11, a second sludge concentration meter 12, a sludge level meter 13, a second high-definition camera 14, a water outlet turbidity meter 15 and a pH meter 19, wherein online monitoring is realized, the system is connected with a pretreatment online monitoring system 20, real-time data is transmitted to the pretreatment online monitoring system 20, and the system guides the dosing amounts of a coagulant dosing pump 16, a coagulant aid dosing pump 18 and a lime dosing pump 17 of a high-density clarification tank and the regulation operation of a sludge discharge pump 7 and a sludge reflux pump 6, so that dosing and sludge discharge control are realized.
The measuring ranges of the water inlet turbidity meter 8 and the water outlet turbidity meter 15 are 0NTU to the design value, and the precision is less than or equal to 1 percent of the measured value.
The measuring range of the flowmeter 9 is 0m3The accuracy is less than or equal to +/-2 percent.
The measuring range of the first sludge concentration meter 10 and the second sludge concentration meter 12 is 0-10%, and the precision is less than or equal to 2% of the measured value.
The measuring range of the mud level meter 13 is 0-10 m, and the precision is less than or equal to +/-1%.
The resolution of the first high-definition camera 11 and the second high-definition camera 14 is larger than or equal to 4M.
The measurement range of the pH meter 19 is 0-14, and the resolution is 0.01 pH.
The operation method of the on-line monitoring device for the high-density clarification tank,
1) online monitoring and dosing adjustment of high-density clarification tank
The high-density clarification tank realizes the adjustment of the dosing amount of a coagulant, a coagulant aid and lime through a pretreatment online monitoring system 20, wherein variable factors are a water inlet turbidity value detected by a water inlet turbidity meter 8, a water inlet flow value detected by a flowmeter 9, a water outlet turbidity value detected by a water outlet turbidity meter 15, a plug flow zone 3 alumen ustum condition monitored by a first high-definition camera 11, a clear water zone 5 transparency monitored by a second high-definition camera 14 and a pH value monitored by a pH meter 19;
setting corresponding dosing frequency according to the flow interval, and adjusting the dosing frequency to a corresponding value when the inflow reaches the corresponding interval; when the inlet water turbidity, the transparency of the clear water area 5, the alum blossom of the plug flow area 3 and the pH value of the plug flow area 3 exceed the set requirements, finely adjusting the dosing frequency until the requirements are met; when the turbidity of the outlet water exceeds a set value, the turbidity of the inlet water, the transparency of the clear water area 5, the alum floc in the plug flow area 3 and the pH value of the plug flow area 3 are checked, and the dosage is adjusted to ensure that the turbidity of the outlet water meets the set requirement;
2) online monitoring and sludge discharging of high-density clarification tank
The high-density clarification tank realizes timely sludge discharge through a pretreatment online monitoring system 20, wherein variable factors are sludge concentration detected by a second sludge concentration meter 12 in the concentration and separation area 4, sludge level height detected by a sludge level meter 13 in the concentration and separation area 4, effluent turbidity value detected by an effluent turbidity meter 15 and transparency of a clear water area 5 monitored by a second high-definition camera 14;
when one of the sludge concentration detected by the second sludge concentration meter 12 and the sludge level height detected by the sludge level meter 13 exceeds a set value, the sludge discharge pump 7 is started to discharge sludge; when the transparency of the clear water area 5 does not reach the set value, checking the sludge concentration detected by the second sludge concentration meter 12 and the sludge level height detected by the sludge level meter 13, and adjusting the sludge discharge amount to enable the transparency of the clear water area 5 to meet the set requirement;
the sludge in the concentration hopper at the bottom of the concentration separation area 4 enters the flocculation area 2 through the sludge reflux pump 6 for flocculation clarification.
Compared with the prior art, the utility model has the following advantages:
(1) good application effect
The developed high-density clarification tank on-line monitoring device detects and monitors main operation parameters of a clarification tank on line, compares the real-time main operation parameters obtained by detection and monitoring with operation experience, and achieves the aims of guiding operation regulation, controlling dosage and sludge discharge, ensuring that the effluent quality of a coagulation clarification system meets the standard requirement, and ensuring the safe, economic and reliable operation of subsequent water treatment equipment.
The hysteresis, blindness and randomness of the operation control of the clarification tank are eliminated, the water quantity, the medicine and the sludge discharge cost are saved, and the workload of operators is greatly reduced.
(2) Wide application range
The device can be used for all power plants containing high-density clarification tanks, is suitable for the design and application of the high-density clarification tank system of a new unit, and is also suitable for the technical transformation of the high-density clarification tank system of an old unit.
(3) Simple transformation
The original system equipment is not changed, only the detection and monitoring equipment is arranged in the high-density clarification tank, and the online monitoring device is arranged.
(4) The implementation process is simple, the application effect is good, and the implementation is easy.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the utility model is a high-density clarifier on-line monitoring device, various detection devices of the device are arranged at key positions of each reaction zone and a clear water zone of a clarifier, so that the on-line detection and monitoring of operating parameters of the clarifier are realized; by comparing the main real-time operation parameters with empirical data, the functions of guiding operation adjustment and control are achieved, and the effluent quality of the coagulation clarification system is improved; the device comprises a coagulation zone 1, a flocculation zone 2, a plug flow zone 3, a concentration separation zone 4 and a clear water zone 5 which are sequentially separated from water inlet to water outlet through concrete in a high-density clarification tank; wherein the clear water zone 5 is positioned at the upper part of the concentration separation zone 4, and the bottoms of the condensation zone 1 and the flocculation zone 2 are communicated through a pipeline; the influent water passes through the coagulation zone 1, the flocculation zone 2 and the plug flow zone 3 in sequence, reaches the concentration separation zone 4 after being mixed and flocculated, sludge is settled to a bottom concentration hopper, and clarified water rises to an outlet;
an inlet of the condensation zone 1 is provided with a water inlet turbidity meter 8 and a flow meter 9, and the condensation zone 1 is connected with a coagulant dosing pump 16;
a first sludge concentration meter 10 is arranged in the flocculation area 2, and the flocculation area 2 is connected with a lime dosing pump 17 and a coagulant aid dosing pump 18;
a pH meter 19 is arranged in the thrust zone 3, and a first high-definition camera 11 is arranged above the water surface;
a second sludge concentration meter 12 and a sludge level meter 13 are arranged in the concentration and separation area 4;
a second high-definition camera 14 is arranged above the water surface of the clear water area 5;
an outlet of the clear water area 5 is provided with a water outlet turbidity meter 15;
a sludge reflux pump 6 is arranged on a communication pipeline between a communication pipeline at the bottoms of the condensation zone 1 and the flocculation zone 2 and a communication pipeline between a concentration hopper at the bottom of the concentration and separation zone 4, and a sludge discharge pump 7 is arranged at an outlet of the concentration hopper at the bottom of the concentration and separation zone 4;
the system comprises a water inlet turbidity meter 8, a flow meter 9, a first sludge concentration meter 10, a first high-definition camera 11, a second sludge concentration meter 12, a sludge level meter 13, a second high-definition camera 14, a water outlet turbidity meter 15 and a pH meter 19, wherein the water inlet turbidity meter realizes online monitoring, real-time data is transmitted to a pretreatment online monitoring system 20, the dosing amounts of a coagulant dosing pump 16, a coagulant aid dosing pump 18 and a lime dosing pump 17 of a high-density clarification tank are guided, and the regulation operation of a sludge discharge pump 7 and a sludge reflux pump 6 is realized, so that the dosing and sludge discharge control is realized.
As a preferred embodiment of the utility model, the measuring ranges of the water inlet turbidity meter 8 and the water outlet turbidity meter 15 are 0NTU to the design value, and the precision is less than or equal to 1 percent of the measured value.
In a preferred embodiment of the utility model, the range of the flow meter 9 is 0m3The accuracy is less than or equal to +/-2 percent.
In a preferred embodiment of the utility model, the first sludge concentration meter 10 and the second sludge concentration meter 12 have a measuring range of 0-10% and an accuracy of less than or equal to 2% of the measured value.
In a preferred embodiment of the utility model, the measuring range of the mud level meter 13 is 0-10 m, and the precision is less than or equal to +/-1%.
In a preferred embodiment of the present invention, the resolution of the first high-definition camera 11 and the second high-definition camera 14 is greater than or equal to 4M, so as to realize clear image capture.
In a preferred embodiment of the present invention, the pH table 19 has a measurement range of 0 to 14 and a resolution of 0.01 pH.
The online monitoring and operating method of the online monitoring device for the high-density clarification tank comprises the following steps:
1) online monitoring and dosing adjustment of high-density clarification tank
The high-density clarification tank realizes the dosing adjustment of a coagulant, a coagulant aid and lime through a pretreatment online monitoring system, wherein variable factors are a water inlet turbidity value detected by a water inlet turbidity meter 8, a water inlet flow value detected by a flowmeter 9, a water outlet turbidity value detected by a water outlet turbidity meter 15, a plug flow zone 3 alumen ustum condition monitored by a first high-definition camera 11, a clear water zone 5 transparency monitored by a second high-definition camera 14 and a pH value monitored by a pH meter 19;
setting corresponding dosing frequency according to the flow interval, and adjusting the dosing frequency to a corresponding value when the inflow reaches the corresponding interval; when the inlet water turbidity, the transparency of the clear water area 5, the alum blossom of the plug flow area 3 and the pH value of the plug flow area 3 exceed the set requirements, finely adjusting the dosing frequency until the requirements are met; when the turbidity of the outlet water exceeds a set value, the turbidity of the inlet water, the transparency of the clear water area 5, the alum floc in the plug flow area 3 and the pH value of the plug flow area 3 are checked, and the dosage is adjusted to ensure that the turbidity of the outlet water meets the set requirement.
2) Online monitoring and sludge discharging of high-density clarification tank
The high-density clarification tank realizes timely sludge discharge through a pretreatment online monitoring system, wherein variable factors are sludge concentration detected by a second sludge concentration meter 12 in the concentration and separation area 4, sludge level height detected by a sludge level meter 13 in the concentration and separation area 4, effluent turbidity value detected by an effluent turbidity meter 15 and transparency of a clear water area 5 monitored by a second high-definition camera 14;
when one of the sludge concentration detected by the second sludge concentration meter 12 and the sludge level height detected by the sludge level meter 13 exceeds a set value, the sludge discharge pump 7 is started to discharge sludge; when the transparency of the clear water area 5 does not reach the set value, checking the sludge concentration detected by the second sludge concentration meter 12 and the sludge level height detected by the sludge level meter 13, and adjusting the sludge discharge amount to enable the transparency of the clear water area 5 to meet the set requirement;
the sludge in the concentration hopper at the bottom of the concentration separation area 4 enters the flocculation area 2 through the sludge reflux pump 6 for flocculation clarification.
The utility model relates to an on-line monitoring device for a high-density clarification tank, which realizes remote real-time detection and monitoring of operating parameters of the clarification tank, controls the dosage and sludge discharge amount of the clarification tank and solves the problems existing in the operation of the clarification tank. The effluent quality of the clarification tank is ensured to meet the standard requirement, and the safe, economic and reliable operation of subsequent water treatment equipment is ensured. The hysteresis, blindness and randomness of the operation control of the clarification tank are eliminated, and the water quantity, the medicine and the sludge discharge cost are saved. Greatly reducing the workload of operators, thereby having wide application prospect.
Claims (7)
1. The utility model provides a high density clarification tank on-line monitoring device which characterized in that: the device comprises a coagulation area (1), a flocculation area (2), a plug flow area (3), a concentration separation area (4) and a clear water area (5) which are sequentially separated from water inlet to water outlet through concrete in a high-density clarification tank, wherein the clear water area (5) is positioned at the upper part of the concentration separation area (4), and the bottoms of the coagulation area (1) and the flocculation area (2) are communicated through a pipeline; the influent water passes through the coagulation zone (1), the flocculation zone (2) and the plug flow zone (3) in sequence, reaches the concentration separation zone (4) after being mixed and flocculated, sludge is settled to a bottom concentration hopper, and clarified water rises to a clear water zone (5);
an inlet of the condensation zone (1) is provided with a water inlet turbidity meter (8) and a flow meter (9), and the condensation zone (1) is connected with a coagulant dosing pump (16);
a first sludge concentration meter (10) is arranged in the flocculation area (2), and the flocculation area (2) is connected with a lime dosing pump (17) and a coagulant aid dosing pump (18);
a pH meter (19) is arranged in the thrust zone (3), and a first high-definition camera (11) is arranged above the water surface;
a second sludge concentration meter (12) and a sludge level meter (13) are arranged in the concentration and separation area (4);
a second high-definition camera (14) is arranged above the water surface of the clear water area (5);
an outlet of the clear water area (5) is provided with a water turbidity meter (15);
a sludge reflux pump (6) is arranged on a communication pipeline between a communication pipeline at the bottoms of the condensation zone (1) and the flocculation zone (2) and a communication pipeline between a concentration hopper at the bottom of the concentration separation zone (4), and a sludge discharge pump (7) is arranged at an outlet of the concentration hopper at the bottom of the concentration separation zone (4);
the system comprises a water inlet turbidity meter (8), a flow meter (9), a first sludge concentration meter (10), a first high-definition camera (11), a second sludge concentration meter (12), a sludge level meter (13), a second high-definition camera (14), a water outlet turbidity meter (15) and a pH meter (19), wherein the water inlet turbidity meter realizes on-line monitoring and is connected with a pretreatment on-line monitoring system (20), real-time data is transmitted to the pretreatment on-line monitoring system (20), a coagulant adding pump (16) of a high-density clarification tank, the adding amounts of a coagulant adding pump (18) and a lime adding pump (17) are guided, and the adjusting operation of a sludge discharge pump (7) and a sludge reflux pump (6) is realized, so that the dosing and sludge discharge control are realized.
2. The high-density clarifier on-line monitoring device according to claim 1, wherein: the measuring ranges of the water inlet turbidity meter (8) and the water outlet turbidity meter (15) are 0 NTU-design value, and the precision is less than or equal to 1 percent of the measured value.
3. The high-density clarifier on-line monitoring device according to claim 1, wherein: the measuring range of the flowmeter (9) is 0m3The accuracy is less than or equal to +/-2 percent.
4. The high-density clarifier on-line monitoring device according to claim 1, wherein: the measuring range of the first sludge concentration meter (10) and the second sludge concentration meter (12) is 0-10%, and the precision is less than or equal to 2% of the measured value.
5. The high-density clarifier on-line monitoring device according to claim 1, wherein: the measuring range of the mud level meter (13) is 0-10 m, and the precision is less than or equal to +/-1%.
6. The high-density clarifier on-line monitoring device according to claim 1, wherein: the resolution ratio of the first high-definition camera (11) and the second high-definition camera (14) is larger than or equal to 4M.
7. The high-density clarifier on-line monitoring device according to claim 1, wherein: the measurement range of the pH meter (19) is 0-14, and the resolution is 0.01 pH.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220708378.7U CN216946362U (en) | 2022-03-29 | 2022-03-29 | Online monitoring device for high-density clarification tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220708378.7U CN216946362U (en) | 2022-03-29 | 2022-03-29 | Online monitoring device for high-density clarification tank |
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| CN216946362U true CN216946362U (en) | 2022-07-12 |
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| CN202220708378.7U Active CN216946362U (en) | 2022-03-29 | 2022-03-29 | Online monitoring device for high-density clarification tank |
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