CN113023801A - Coagulation clarification effect on-line supervision control system - Google Patents
Coagulation clarification effect on-line supervision control system Download PDFInfo
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- CN113023801A CN113023801A CN202110261027.6A CN202110261027A CN113023801A CN 113023801 A CN113023801 A CN 113023801A CN 202110261027 A CN202110261027 A CN 202110261027A CN 113023801 A CN113023801 A CN 113023801A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an on-line monitoring control system for a coagulation and clarification effect.A camera is arranged on a test cup, an outlet of a water tank, an outlet of a coagulant tank and an outlet of a coagulant aid tank are communicated with an inlet of the water tank through a first valve after being connected in parallel through pipelines, and a supernatant outlet of the test cup is communicated with an inlet of a first detection system through a second valve; the outlet of the water inlet pipeline is communicated with the inlet of the coagulation clarification device, the inlet of the water tank and the inlet of the second detection system, a water inlet valve is arranged at the inlet of the water tank, and the outlet of the coagulation clarification device is communicated with the inlet of the third detection system; the dosing self-adaption setting system is connected with the self-learning system, the first detection system, the second detection system, the fourth detection system and the coagulation clarification equipment, and the system can greatly reduce the operation cost of the coagulation clarification equipment on the premise of ensuring the coagulation clarification effect of the coagulation clarification equipment.
Description
Technical Field
The invention belongs to the field of water treatment, and relates to an on-line monitoring and controlling system for a coagulation and clarification effect.
Background
The coagulation clarification process is a water quality purification technology which utilizes chemical agents to destabilize colloids and fine suspended matters in water so as to coagulate the colloids and the fine suspended matters into floccules and then separates and removes the floccules. The process can reduce the water quality appearance indexes such as turbidity, chromaticity and the like of raw water, and can remove various toxic and harmful pollutants in water, so that the process is widely applied to water supply and wastewater treatment.
The chemical agents used in the coagulation clarification process are mainly a coagulant and a coagulant aid, and the control of the dosage is one of important factors influencing the coagulation clarification effect. When the medicine is not added sufficiently, the colloid can not be destabilized completely, and the formed floc has small size, low concentration and poor activity, so the effluent quality is poor; when the addition of excessive chemicals is carried out, although the formed flocculating constituent has higher concentration, stronger activity and lower effluent turbidity, the density of the flocculating constituent is very low, the sludge layer of the coagulation clarification equipment rises quickly, so that the sludge is discharged frequently, the water consumption is higher and the operation cost is high. Meanwhile, because the common polyaluminium chloride or the polyferric sulfate is used as a coagulant, the residual Al in the water3+And Fe3+The concentration is higher, and the safe operation of post-stage treatment equipment is not facilitated. The reasonable and stable control of the dosage is a reliable guarantee of the coagulation clarification effect.
Generally, the dosage of coagulant and coagulant aid is determined by manual testing at the plant commissioning factory during the construction period. After normal operation, the operator only finely adjusts the dosage according to experience. The control method for the dosing quantity completely depends on the technical level of personnel, and when the quality and the flow of inlet water are changed, the quality of outlet water is over standard or the operation cost is higher due to untimely or inaccurate dosing quantity adjustment response.
If a set of coagulation clarification optimal dosage online intelligent control device is developed aiming at the problems of large hysteresis, poor accuracy, low automation degree and the like of the traditional dosing mode, the effluent quality of coagulation clarification equipment can be improved, the operation cost is reduced, the safe operation of subsequent water treatment equipment can be ensured, and the device has the remarkable quality and efficiency improvement characteristics.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an on-line monitoring and controlling system for the coagulation and clarification effect, which can greatly reduce the operation cost of the coagulation and clarification equipment on the premise of ensuring the coagulation and clarification effect of the coagulation and clarification equipment.
In order to achieve the aim, the coagulation clarification effect online supervision control system comprises a self-learning system, a dosing amount self-adaptive setting system, a water inlet pipeline, a water tank, a coagulant aid tank, a first detection system, a second detection system, a third detection system and a plurality of water treatment systems;
each water treatment system comprises a test cup, a camera is arranged on the test cup, an outlet of the water tank, an outlet of the coagulant tank and an outlet of the coagulant aid tank are communicated with an inlet of the water tank through a first valve after being connected in parallel through pipelines, and a supernatant outlet of the test cup is communicated with an inlet of the first detection system through a second valve;
the outlet of the water inlet pipeline is communicated with the inlet of the coagulation clarification device, the inlet of the water tank and the inlet of the second detection system, a water inlet valve is arranged at the inlet of the water tank, and the outlet of the coagulation clarification device is communicated with the inlet of the third detection system;
the self-adaptive dosing amount adjusting system is connected with the self-learning system, the first detection system, the second detection system, the third detection system and the coagulation clarification equipment.
And a third valve, a first centrifugal pump and a fourth valve which are connected with the dosing amount self-adaptive setting system are arranged at the outlet of the water tank.
And a fifth valve, a first metering pump and a sixth valve which are connected with a dosing amount self-adaptive setting system are arranged at the outlet of the coagulant tank.
And a seventh valve, a second metering pump and an eighth valve which are connected with the dosing quantity self-adaptive setting system are arranged at the outlet of the coagulant aid tank.
A stirring device and a liquid level meter are arranged in the test cup, wherein the liquid level meter is connected with the self-adaptive medicine adding amount setting system.
The bottom of the test cup is provided with a drain outlet, wherein the drain outlet is provided with a drain valve.
Still include the demineralized water pipe, be provided with first washing terminals in the test cup, wherein, first washing terminals is linked together through the export of first washing water control valve with the water tank, and the demineralized water pipe is linked together with the entry of water tank, is provided with the control valve on the demineralized water pipe.
And a second centrifugal pump is arranged at the inlet of the first detection system.
The first detection system, the second detection system and the third detection system respectively comprise a detection pool and a turbidimeter and a pH meter which are arranged in the detection pool.
And a second flushing nozzle is arranged in the detection pool in the first detection system, wherein the second flushing nozzle is communicated with an outlet of the water tank through a second flushing water control valve.
The invention has the following beneficial effects:
when the coagulation clarification effect on-line supervision control system is in specific operation, water samples are injected into a plurality of test cups through water tanks, then different coagulants and different coagulant aids are injected into the water tanks in sequence, stirring is carried out, supernatant of water in the test cups is introduced into a first detection system after standing, water quality is detected through the first detection system, information of the minimum dosage of the coagulants and the coagulant aids under the condition of qualified water quality is obtained through comparison, and finally coagulation clarification equipment is controlled according to the information, so that the running cost of the coagulation clarification equipment is greatly reduced on the premise of ensuring the coagulation clarification effect of the coagulation clarification equipment, the automation degree is high, intervention is not required, and the practicability is extremely high.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a self-learning system, 2 is a dosing amount self-adaptive setting system, 3 is a water tank, 4 is a coagulant tank, 5 is a coagulant aid tank, 6 is a first detection system, 7 is a second detection system, 8 is a third detection system, 9 is a test cup, 10 is a camera, 11 is a first centrifugal pump, 12 is a first metering pump, 13 is a second metering pump, 14 is a second centrifugal pump, 15 is a third valve, 16 is a fourth valve, 17 is a fifth valve, 18 is a sixth valve, 19 is a seventh valve, 20 is an eighth valve, 21 is a first valve, 22 is a first flushing water control valve, 23 is a second valve, 24 is a blowdown valve, 25 is a second flushing valve, 26 is a water outlet valve, 27 is a water inlet valve, and 28 is a control valve.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the coagulation clarification effect on-line supervision control system of the invention comprises a self-learning system 1, a dosing amount self-adaptive setting system 2, a water inlet pipeline, a water tank 3, a coagulant tank 4, a coagulant aid tank 5, a first detection system 6, a second detection system 7, a third detection system 8 and a plurality of water treatment systems; each water treatment system comprises a test cup 9, a camera 10 is arranged on the test cup 9, the outlets of the outlet of the water tank 3, the outlets of the coagulant tank 4 and the outlet of the coagulant aid tank 5 are communicated with the inlet of the water tank 3 through a first valve 21 after being connected in parallel through pipelines, and the supernatant outlet of the test cup 9 is communicated with the inlet of the first detection system 6 through a second valve 23; the outlet of the water inlet pipeline is communicated with the inlet of the coagulation clarification device, the inlet of the water tank 3 and the inlet of the second detection system 7, a water inlet valve 27 is arranged at the inlet of the water tank 3, and the outlet of the coagulation clarification device is communicated with the inlet of the third detection system 8; the dosage self-adaptive setting system 2 is connected with the self-learning system, the first detection system 6, the second detection system 7, the third detection system 8 and the coagulation clarification device, and a second centrifugal pump 14 is arranged at the inlet of the first detection system 6.
A third valve 15, a first centrifugal pump 11 and a fourth valve 16 which are connected with the self-adaptive dosing quantity setting system 2 are arranged at the outlet of the water tank 3; a fifth valve 17, a first metering pump 12 and a sixth valve 18 which are connected with the self-adaptive dosing system 2 are arranged at the outlet of the coagulant tank 4; and a seventh valve 19, a second metering pump 13 and an eighth valve 20 which are connected with the dosing quantity self-adaptive setting system 2 are arranged at the outlet of the coagulant aid tank 5.
A stirring device and a liquid level meter are arranged in the test cup 9, wherein the liquid level meter is connected with the self-adaptive medicine adding amount setting system 2; the bottom of the test cup 9 is provided with a drain outlet, wherein the drain outlet is provided with a drain valve 24.
The invention also comprises a desalting water pipe, a first flushing nozzle is arranged in the test cup 9, wherein the first flushing nozzle is communicated with the outlet of the water tank 3 through a first flushing water control valve 22, the desalting water pipe is communicated with the inlet of the water tank 3, and a control valve 28 is arranged on the desalting water pipe.
The first detection system 6, the second detection system 7 and the third detection system 8 comprise detection pools and turbidimeters and pH meters arranged in the detection pools; a second flushing nozzle is arranged in the detection pool in the first detection system 6, wherein the second flushing nozzle is communicated with the outlet of the water tank 3 through a second flushing water control valve 25; and a water outlet valve 26 is arranged at the bottom outlet of the detection pool.
The specific working process of the invention is as follows:
1) the water inlet valve 27 is opened to fill water into the water tank 3, and then water is filled into each test cup 9 through the water tank 3;
2) coagulant tanks 4 are used for sequentially injecting coagulant with different measurement into each test cup 9;
3) starting a stirring device to stir the water in the test cup 9;
4) sequentially injecting coagulant aids with different metering quantities into the test cups 9 through the coagulant aid tank 5;
5) stirring the water in the test cup 9 by a stirring device;
6) starting to stand, simultaneously monitoring the forming process and the shape of the alum flocs through the whole range of the camera 10, and simultaneously calculating the clarity degree of supernatant in the test cup 9;
7) after standing, introducing the supernatant of the water in the test cup 9 into the first detection system 6, monitoring the turbidity and the pH value of the supernatant through the first detection system 6, and after detection, emptying the water in the first detection system 6;
8) the dosage self-adaptive setting system 2 acquires the minimum dosage of the coagulant and the coagulant aid on the premise of qualified water quality according to the dosage of the coagulant, the dosage of the coagulant aid and the turbidity and the pH value of supernatant in each test cup 9, then sends the information of the minimum dosage of the coagulant and the coagulant aid on the premise of qualified water quality to the self-learning system 1, and the self-learning system 1 controls and controls the dosage of the coagulant and the coagulant aid in the coagulation clarification equipment according to the information of the minimum dosage of the coagulant and the coagulant aid on the premise of qualified water quality of the current water quality;
9) and opening the control valve 28, introducing the desalted water into the water tank 3, and flushing the test cup 9 and the first detection system 6 by using a first flushing nozzle and a second flushing nozzle through the desalted water in the water tank 3, wherein the first flushing nozzle and the second flushing nozzle are both pressurizing nozzles.
In addition, a liquid level switch is disposed in the test cup 9, and the stirring device has a variable speed structure.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. An on-line supervision control system for a coagulation and clarification effect is characterized by comprising a self-learning system (1), a self-adaptive dosing amount setting system (2), a water inlet pipeline, a water tank (3), a coagulant tank (4), a coagulant aid tank (5), a first detection system (6), a second detection system (7), a third detection system (8) and a plurality of water treatment systems;
each water treatment system comprises a test cup (9), a camera (10) is arranged on each test cup (9), an outlet of the water tank (3), an outlet of the coagulant tank (4) and an outlet of the coagulant aid tank (5) are communicated with an inlet of the water tank (3) through a first valve (21) after being connected in parallel through pipelines, and a supernatant outlet of each test cup (9) is communicated with an inlet of the first detection system (6) through a second valve (23);
the outlet of the water inlet pipeline is communicated with the inlet of the coagulation clarification device, the inlet of the water tank (3) and the inlet of the second detection system (7), a water inlet valve (27) is arranged at the inlet of the water tank (3), and the outlet of the coagulation clarification device is communicated with the inlet of the third detection system (8);
the self-adaptive dosing amount setting system (2) is connected with the self-learning system (1), the first detection system (6), the second detection system (7), the third detection system (8) and the coagulation clarification device.
2. The on-line monitoring and control system for the coagulation and clarification effect according to claim 1, characterized in that a third valve (15), a first centrifugal pump (11) and a fourth valve (16) connected with the dosing amount self-adaptive setting system (2) are arranged at the outlet of the water tank (3).
3. The on-line monitoring and controlling system for the coagulation and clarification effect according to claim 2, characterized in that a fifth valve (17), a first metering pump (12) and a sixth valve (18) which are connected with the dosing amount self-adaptive setting system (2) are arranged at the outlet of the coagulant tank (4).
4. The on-line monitoring and control system for the coagulation and clarification effect according to claim 3, characterized in that a seventh valve (19), a second metering pump (13) and an eighth valve (20) which are connected with the dosing amount self-adaptive setting system (2) are arranged at the outlet of the coagulant aid tank (5).
5. The on-line monitoring and control system for the coagulation and clarification effect according to claim 1, characterized in that a stirring device and a liquid level meter are arranged in the test cup (9), wherein the liquid level meter is connected with the self-adaptive dosing setting system (2).
6. The on-line supervision and control system for coagulation and clarification effect according to claim 1, characterized in that the bottom of the test cup (9) is provided with a sewage draining outlet, wherein the sewage draining outlet is provided with a sewage draining valve (24).
7. The on-line monitoring and control system for effects of coagulation and clarification according to claim 1, characterized by further comprising a desalting water pipe, wherein a first flushing nozzle is arranged in the test cup (9), the first flushing nozzle is communicated with an outlet of the water tank (3) through a first flushing water control valve (22), the desalting water pipe is communicated with an inlet of the water tank (3), and the desalting water pipe is provided with a control valve (28).
8. The on-line supervision and control system for effects of coagulation and clarification according to claim 2, characterized in that a second centrifugal pump (14) is provided at the inlet of the first detection system (6).
9. The on-line monitoring and control system for effects of coagulation and clarification according to claim 1, wherein the first detection system (6), the second detection system (7) and the third detection system (8) each comprise a detection tank and a turbidimeter and a pH meter arranged in the detection tank.
10. The on-line monitoring and control system for effects of coagulation and clarification according to claim 7, characterized in that a second flushing nozzle is arranged in the detection tank in the first detection system (6), wherein the second flushing nozzle is communicated with the outlet of the water tank (3) through a second flushing water control valve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261027.6A CN113023801A (en) | 2021-03-10 | 2021-03-10 | Coagulation clarification effect on-line supervision control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261027.6A CN113023801A (en) | 2021-03-10 | 2021-03-10 | Coagulation clarification effect on-line supervision control system |
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| Publication Number | Publication Date |
|---|---|
| CN113023801A true CN113023801A (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110261027.6A Pending CN113023801A (en) | 2021-03-10 | 2021-03-10 | Coagulation clarification effect on-line supervision control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113023801A (en) |
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2021
- 2021-03-10 CN CN202110261027.6A patent/CN113023801A/en active Pending
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