CN110862160B - Water quality monitoring waterway control system for secondary water supply and control method thereof - Google Patents
Water quality monitoring waterway control system for secondary water supply and control method thereof Download PDFInfo
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- CN110862160B CN110862160B CN201911195941.4A CN201911195941A CN110862160B CN 110862160 B CN110862160 B CN 110862160B CN 201911195941 A CN201911195941 A CN 201911195941A CN 110862160 B CN110862160 B CN 110862160B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 13
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 239000000523 sample Substances 0.000 claims abstract description 40
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 31
- 239000000460 chlorine Substances 0.000 claims abstract description 31
- 239000008213 purified water Substances 0.000 claims abstract description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 238000000746 purification Methods 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a water quality monitoring waterway control system for secondary water supply, which is characterized in that raw water and a purified water inlet pipeline are converged into a waterway, and the waterway sequentially passes through a flowmeter, a TDS probe, a temperature probe and a diaphragm pump and then is divided into two waterways, wherein one waterway sequentially passes through a second electromagnetic valve and a filtering device, the other waterway passes through a first electromagnetic valve, the waterway passing through the filtering device is divided into two waterways, one waterway passes through a 300CC waste water ratio valve, the other waterway is converged with the waterway passing through the first electromagnetic valve through a first one-way valve and then is divided into two waterways, one waterway sequentially passes through a fourth electromagnetic valve, a detection module and a third one-way valve, the other waterway sequentially passes through a third electromagnetic valve, a residual chlorine value detection device, a PH detection device and a second one-way valve, and the waterway passing through the 300CC waste water ratio valve, the waterway passing through the second one-way valve and the waterway passing through the third one-way valve are converged into a waterway to be led to a water outlet; the invention adopts double-channel water inlet and switches waterways at any time for monitoring.
Description
Technical Field
The invention belongs to the technical field of water quality monitoring of water tanks, and particularly relates to a water path control system for secondary water supply water quality monitoring and a control method thereof.
Background
Along with the development of human beings and the progress of society, the higher the building floor is, the higher the building water supply is an unavoidable important ring in modern city construction, and the monitoring of the quality of secondary water supply also becomes an important civil engineering, however, products aiming at the quality monitoring of secondary water supply on the market are not fully indicated or the monitoring part of the products is not protected, and accessories are difficult to calibrate after being influenced by scale, so that the display value of the products shows the real water quality condition of the water body.
Disclosure of Invention
The invention provides a water quality monitoring waterway control system for secondary water supply and a control method thereof, which are used for solving the problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides a secondary water supply quality of water monitoring water route control system, the inlet tube of water route divide into raw water inlet pipeline and water purification inlet pipeline, raw water inlet pipeline has set gradually raw water inlet connector 1, microfilter 3 and first pulse solenoid valve 4, water purification inlet pipeline has set gradually water purification inlet connector 2 and second pulse solenoid valve 5, raw water inlet pipeline and water purification inlet pipeline are the water route of converging, and be two-way water route after passing through flowmeter 6 in proper order, TDS probe 7, temperature probe 8, diaphragm pump 9 in proper order, one of them water route is through second solenoid valve 11 and filter equipment in proper order, another water route is through first solenoid valve 10, the water route through filter equipment divide into two-way water route, one of them water route is through 300CC waste water than valve 15, another water route is through first check valve 16 and through the water route of first solenoid valve 10 after converging, one of them water route is through fourth solenoid valve 23 in proper order, detection module 24, third check valve 25, another water route is through third solenoid valve 17 in proper order, the residual chlorine value detection device, PH detection device, second check valve 20, 300CC than valve 15, the first water route through the check valve 20 through the water route through the check valve of third valve 25 and the water route through the drain 20.
Further, the filtering device comprises a PP filter element 12, an activated carbon filter element 13 and an RO filter element 14 which are sequentially arranged.
Further, the residual chlorine value detecting device is a residual chlorine flow cell 18 connected in the waterway, and a residual chlorine electrode 19 is arranged on the residual chlorine flow cell 18.
Further, the PH detection device is a PH flow cell 21 connected to the waterway, and a PH electrode 22 is disposed on the PH flow cell 21.
Further, the water path through the 300CC waste water ratio valve 15, the water path through the third check valve 25 and the water path through the second check valve 20 are merged into one water path, and are connected to the drain port through the drain joint 26.
Preferably, the detection module (24) is EC1-G2400/U.
A control method based on a water quality monitoring waterway control system for secondary water supply comprises the following steps:
s1, after the system is installed, placing the water inlet end of a raw water inlet pipeline in a raw water tank, and placing the water inlet end of a purified water inlet pipeline in a purified water tank; the water discharge end of the water discharge port is communicated with a sewer;
S2, keeping the first pulse electromagnetic valve 4 open, and closing the second pulse electromagnetic valve 5 to open the raw water detection waterway; or the first pulse electromagnetic valve 4 is kept to be closed, and the second pulse electromagnetic valve 5 is opened, so that the water purifying detection waterway is opened;
S3, opening the first electromagnetic valve 10 and the fourth electromagnetic valve 23, closing the second electromagnetic valve 11 and the third electromagnetic valve 17, starting the diaphragm pump 9 to work, enabling water to be detected to pass through the water inlet pipe, and passing through the flowmeter 6, the TDS probe 7 and the temperature probe 8, and measuring the water flow rate, the TDS and the temperature of the water to be detected under dynamic conditions through the flowmeter 6, the TDS probe 7 and the temperature probe 8, and when the water to be detected passes through the first electromagnetic valve 10, the fourth electromagnetic valve 23, the detection module 24, the third one-way valve 25 and the water discharge joint 26 and fills the cavity of the detection module 24, stopping the diaphragm pump 9, the first electromagnetic valve 10 and the fourth electromagnetic valve 23, and measuring the TOC, NTU, COD of the water to be detected under static conditions;
S4, after the step S3 is finished, the second electromagnetic valve 11 and the fourth electromagnetic valve 23 are closed, the first electromagnetic valve 10 and the third electromagnetic valve 17 are opened, the diaphragm pump 9 is started to work, water to be detected flows through the water inlet pipe, through the flowmeter 6, the TDS probe 7, the temperature probe 8, the diaphragm pump 9, the first electromagnetic valve 10, the third electromagnetic valve 17, the residual chlorine electrode 19 in the residual chlorine flow cell 18, the PH electrode 22 in the PH flow cell 21, the second one-way valve 20 and the drainage connector 26, the residual chlorine value is dynamically measured at the moment, then the diaphragm pump 9 is stopped to work, the first electromagnetic valve 10 and the third electromagnetic valve 17 are closed, and the PH value is statically measured;
S5, after the step S4 is completed, the system automatically performs self-cleaning operation, the first electromagnetic valve 10 and the third electromagnetic valve 17 are closed, the first pulse electromagnetic valve 4, the second electromagnetic valve 11 and the fourth electromagnetic valve 23 are opened, the water flow direction is the raw water inlet joint 1, the micro-filter 3, the first pulse electromagnetic valve 4, the flowmeter 6, the TDS probe 7, the temperature probe 8, the diaphragm pump 9, the second electromagnetic valve 11, the PP filter element 12, the activated carbon filter element 13, the RO filter element 14, the first one-way valve 16, the fourth electromagnetic valve 23, the detection module 24, the third one-way valve 25 and the water discharge joint 26, the flushing detection module 24 closes the fourth electromagnetic valve 23 when the measured value is equal to the pure water calibration value, the third electromagnetic valve 17 is opened, the first pulse electromagnetic valve 4, the second electromagnetic valve 11 and the third electromagnetic valve 17 are closed when the flushing residual chlorine electrode 19 and the PH electrode 22 are equal to the measured value is equal to the pure water calibration value, and at the same time, the circuit of all electric devices is cut off, and at the moment, one test and flushing cycle is completed.
And S6, when the system needs to be calibrated after working for a period of time, a calibration command is triggered, a calibration command is given at the far end, the second pulse electromagnetic valve 5, the second electromagnetic valve 11 and the fourth electromagnetic valve 23 are opened, the diaphragm pump 9 is started, water to be filtered passes through the water purification water inlet connector 2, the second pulse electromagnetic valve 5, the flowmeter 6, the TDS probe 7, the temperature probe 8, the diaphragm pump 9 and the second electromagnetic valve 11, the water to be filtered passes through the PP filter element 12, the active carbon filter element 13 and the RO filter element 14, pure water discharged from the RO filter element 14 is used as calibration liquid and passes through the first one-way valve 16 and the fourth electromagnetic valve 23, the water enters the detection module 24, the water is introduced for 5min, and the far-end calibration is completed without personnel to be operated on site.
Further, in the testing process of step S3 and step S4, the waterway water inlet pipe of step S2 is switched, quality-classifying detection is performed, the first pulse electromagnetic valve 4 is opened when raw water is measured, the second pulse electromagnetic valve 5 is closed, the second pulse electromagnetic valve 5 is opened when water is measured, and the first pulse electromagnetic valve 4 is closed.
Further, the system adjusts the working voltage of the diaphragm pump 9 according to the real-time water flow velocity value measured by the flowmeter 6, so as to adjust the pipeline water flow velocity to the flow velocity value most suitable for the current waterway system.
Compared with the prior art, the invention has the following beneficial effects:
1. The double-channel water inlet waterway can be used for supplying water according to different qualities, and the water inlet waterway can be switched at any time for monitoring, so that compared with a single waterway in the prior art, the repeated purchasing cost is greatly reduced;
2. Compared with the prior art, the invention has high integration level, more single index and one machine contains TOC, NTU, COD, PH, TDS, temperature, residual chlorine and other seven indexes;
3. The system can utilize a monitoring water source, form purified water through processing in the system, and self-clean the residual chlorine electrode 19, the PH electrode 22 and the detection module 24, so that the residual chlorine electrode is in a pure water environment when the system is not in working state, the influence of a series of complex factors such as scale and the like in the monitoring water source on the precision of monitoring parts is avoided, and the maintenance frequency can be reduced to at least 50% of the original frequency;
4. the remote calibration is supported, a pure water environment can be created without manual operation, and the remote calibration can be performed by sending instructions.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
Wherein: 1-raw water inlet joint, 2-purified water inlet joint, 3-micro filter, 4-first pulse solenoid valve, 5-second pulse solenoid valve, 6-flowmeter, 7-TDS probe, 8-temperature probe, 9-diaphragm pump, 10-first solenoid valve, 11-second solenoid valve, 12-PP filter core, 13-active carbon filter core, 14-RO filter core, 15-300CC waste water ratio valve, 16-first check valve, 17-third solenoid valve, 18-chlorine residue flow cell, 19-chlorine residue electrode, 20-second check valve, 21-PH flow cell, 22-PH electrode, 23-fourth solenoid valve, 24-detection module, 25-third check valve, 26-drainage joint.
Detailed Description
The invention will be further illustrated with reference to examples.
As shown in fig. 1, a water inlet pipe of a water channel is divided into a raw water inlet pipe and a purified water inlet pipe, the raw water inlet pipe is sequentially provided with a raw water inlet joint 1, a micro filter 3 and a first pulse electromagnetic valve 4, the purified water inlet pipe is sequentially provided with a purified water inlet joint 2 and a second pulse electromagnetic valve 5, the raw water inlet pipe and the purified water inlet pipe are converged into a water channel, the water channel sequentially passes through a flowmeter 6, a TDS probe 7, a temperature probe 8 and a diaphragm pump 9 and then is divided into two water channels, one water channel sequentially passes through a second electromagnetic valve 11 and a filtering device, the other water channel sequentially passes through a first electromagnetic valve 10, the water channel passing through the filtering device is divided into two water channels, one water channel passes through a 300CC waste water ratio valve 15, the other water channel sequentially passes through a fourth electromagnetic valve 23, a detection module 24 and a third one-way valve 25, the other water channel sequentially passes through a third electromagnetic valve 17, a residual chlorine value detection device, a PH detection device, a second one-way valve 20 and a water channel passing through a third one-way valve 26 and a water outlet of the first one-way valve 20, and a water channel passing through the first one-way valve 26 and the water channel is divided into two water channels.
As a preferred mode, the filtering device comprises a PP filter element 12, an activated carbon filter element 13 and an RO filter element 14 which are sequentially arranged, specifically, the PP filter element 12, the activated carbon filter element 13 and the RO filter element 14 are respectively loaded in one tank body, and water flows sequentially pass through each tank body, namely, the water flows pass through the PP filter element 12, the activated carbon filter element 13 and the RO filter element 14 in each tank body.
As a preferable mode, the residual chlorine value detecting device is a residual chlorine flow cell 18 connected in the waterway, and a residual chlorine electrode 19 is arranged on the residual chlorine flow cell 18; the PH detection device is a PH flow cell 21 connected in a waterway, and a PH electrode 22 is arranged on the PH flow cell 21.
As a preferred mode, the model number of the detection module 24 is EC1-G2400/U, the manufacturer is Nanjing Yimu Intelligent technologies Co., ltd, and the detection module is described in 2017214870305, 2017214862169 and 2017217796760 in the following published patents.
A control method based on a water quality monitoring waterway control system for secondary water supply comprises the following steps:
s1, after the system is installed, placing the water inlet end of a raw water inlet pipeline in a raw water tank, and placing the water inlet end of a purified water inlet pipeline in a purified water tank; the water discharge end of the water discharge port is communicated with a sewer;
S2, keeping the first pulse electromagnetic valve 4 open, and closing the second pulse electromagnetic valve 5 to open the raw water detection waterway; or the first pulse electromagnetic valve 4 is kept to be closed, and the second pulse electromagnetic valve 5 is opened, so that the water purifying detection waterway is opened;
S3, opening the first electromagnetic valve 10 and the fourth electromagnetic valve 23, closing the second electromagnetic valve 11 and the third electromagnetic valve 17, starting the diaphragm pump 9 to work, enabling water to be detected to pass through the water inlet pipe, and passing through the flowmeter 6, the TDS probe 7 and the temperature probe 8, and measuring the water flow rate, the TDS and the temperature of the water to be detected under dynamic conditions through the flowmeter 6, the TDS probe 7 and the temperature probe 8, and when the water to be detected passes through the first electromagnetic valve 10, the fourth electromagnetic valve 23, the detection module 24, the third one-way valve 25 and the water discharge joint 26 and fills the cavity of the detection module 24, stopping the diaphragm pump 9, the first electromagnetic valve 10 and the fourth electromagnetic valve 23, and measuring the TOC, NTU, COD of the water to be detected under static conditions; specifically, TOC and NTU are measured values, and COD is calculated according to the linear relation software of NTU.
S4, after the step S3 is finished, the second electromagnetic valve 11 and the fourth electromagnetic valve 23 are closed, the first electromagnetic valve 10 and the third electromagnetic valve 17 are opened, the diaphragm pump 9 is started to work, water to be detected flows through the water inlet pipe, through the flowmeter 6, the TDS probe 7, the temperature probe 8, the diaphragm pump 9, the first electromagnetic valve 10, the third electromagnetic valve 17, the residual chlorine electrode 19 in the residual chlorine flow cell 18, the PH electrode 22 in the PH flow cell 21, the second one-way valve 20 and the drainage connector 26, the residual chlorine value is dynamically measured at the moment, then the diaphragm pump 9 is stopped to work, the first electromagnetic valve 10 and the third electromagnetic valve 17 are closed, and the PH value is statically measured;
S5, after the step S4 is completed, the system automatically performs self-cleaning operation, the first electromagnetic valve 10 and the third electromagnetic valve 17 are closed, the first pulse electromagnetic valve 4, the second electromagnetic valve 11 and the fourth electromagnetic valve 23 are opened, the water flow direction is the raw water inlet joint 1, the micro-filter 3, the first pulse electromagnetic valve 4, the flowmeter 6, the TDS probe 7, the temperature probe 8, the diaphragm pump 9, the second electromagnetic valve 11, the PP filter element 12, the activated carbon filter element 13, the RO filter element 14, the first one-way valve 16, the fourth electromagnetic valve 23, the detection module 24, the third one-way valve 25 and the water discharge joint 26, the flushing detection module 24 closes the fourth electromagnetic valve 23 when the measured value is equal to the pure water calibration value, the third electromagnetic valve 17 is opened, the first pulse electromagnetic valve 4, the second electromagnetic valve 11 and the third electromagnetic valve 17 are closed when the flushing residual chlorine electrode 19 and the PH electrode 22 are equal to the measured value is equal to the pure water calibration value, and at the same time, the circuit of all electric devices is cut off, and at the moment, one test and flushing cycle is completed.
And S6, when the system needs to be calibrated after working for a period of time, a calibration command is triggered, a calibration command is given at the far end, the second pulse electromagnetic valve 5, the second electromagnetic valve 11 and the fourth electromagnetic valve 23 are opened, the diaphragm pump 9 is started, water to be filtered passes through the water purification water inlet connector 2, the second pulse electromagnetic valve 5, the flowmeter 6, the TDS probe 7, the temperature probe 8, the diaphragm pump 9 and the second electromagnetic valve 11, the water to be filtered passes through the PP filter element 12, the active carbon filter element 13 and the RO filter element 14, pure water discharged from the RO filter element 14 is used as calibration liquid and passes through the first one-way valve 16 and the fourth electromagnetic valve 23, the water enters the detection module 24, the water is introduced for 5min, and the far-end calibration is completed without personnel to be operated on site.
As a preferable mode, in the test process of step S3 and step S4, the waterway water inlet pipe of step S2 is switched, quality detection is performed, the first pulse electromagnetic valve 4 is opened when raw water is measured, the second pulse electromagnetic valve 5 is closed, the second pulse electromagnetic valve 5 is opened when water is measured, and the first pulse electromagnetic valve 4 is closed.
As a preferred mode, the system adjusts the working voltage of the diaphragm pump 9 according to the real-time water flow velocity value measured by the flowmeter 6, so as to adjust the pipeline water flow velocity to the flow velocity value most suitable for the current waterway system.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (8)
1. The utility model provides a secondary water supply quality of water monitoring water route control system, its characterized in that, the inlet tube of water route divide into raw water inlet pipe and water purification inlet pipe, raw water inlet pipe has set gradually raw water inlet joint (1), microfilter (3) and first pulse solenoid valve (4), water purification inlet pipe has set gradually water purification inlet joint (2) and second pulse solenoid valve (5), raw water inlet pipe and water purification inlet pipe are gathered into a water route, and through flowmeter (6) in proper order, TDS probe (7), temperature probe (8), diaphragm pump (9) back be two water routes, wherein a water route is through second solenoid valve (11) and filter equipment in proper order, another water route is through first solenoid valve (10), the water route through filter equipment divide into two water routes, wherein a water route is through 300CC waste water than valve (15) in proper order, another water route is through first check valve (16) and through the water route that first solenoid valve (10) meet the back be two water routes, wherein a water route is through fourth solenoid valve (23), detection module (24), third check valve (25), another water route is through third solenoid valve (17) in proper order, the chlorine valve (17), the rest valve (20) is through the second water route than the check valve (20) through the device in proper order, the waste water than the water route through the check valve of the filter equipment is through the second CC valve (20) The waterway passing through the third one-way valve (25) and the waterway passing through the second one-way valve (20) are converged into one waterway to be led to a water outlet;
the filtering device comprises a PP filter element (12), an active carbon filter element (13) and an RO filter element (14) which are sequentially arranged;
The residual chlorine value detection device is a residual chlorine flow cell (18) connected in the waterway, and a residual chlorine electrode (19) is arranged on the residual chlorine flow cell (18).
2. The water path control system for monitoring quality of secondary water supply according to claim 1, wherein the PH detecting device is a PH flow cell (21) connected in the water path, and a PH electrode (22) is disposed on the PH flow cell (21).
3. The water path control system for monitoring quality of secondary water supply according to claim 1, wherein the water path passing through the 300CC waste water ratio valve (15), the water path passing through the third check valve (25) and the water path passing through the second check valve (20) are converged into one water path, and are connected to the water outlet through the water outlet joint (26).
4. The secondary water supply quality monitoring waterway control system of claim 1, wherein the detection module (24) is EC1-G2400/U.
5. The control method of the water quality monitoring waterway control system for secondary water supply according to any one of claims 1 to 4, comprising the steps of:
s1, after the system is installed, placing the water inlet end of a raw water inlet pipeline in a raw water tank, and placing the water inlet end of a purified water inlet pipeline in a purified water tank; the water discharge end of the water discharge port is communicated with a sewer;
s2, keeping the first pulse electromagnetic valve (4) open, and closing the second pulse electromagnetic valve (5) to enable the raw water detection waterway to be opened; or the first pulse electromagnetic valve (4) is kept to be closed, and the second pulse electromagnetic valve (5) is opened, so that the water purifying detection waterway is opened;
S3, opening a first electromagnetic valve (10) and a fourth electromagnetic valve (23), closing a second electromagnetic valve (11) and a third electromagnetic valve (17), starting a diaphragm pump (9) to work, enabling water to be detected to pass through a water inlet pipe, passing through a flowmeter (6), a TDS probe (7) and a temperature probe (8), dynamically measuring the values of water flow rate, TDS and temperature of the water to be detected through the flowmeter (6), the TDS probe (7) and the temperature probe (8), and when the water to be detected passes through the first electromagnetic valve (10), the fourth electromagnetic valve (23), a detection module (24), a third one-way valve (25) and a water discharge joint (26) and fills a cavity of the detection module (24), stopping the operation of the diaphragm pump (9), the first electromagnetic valve (10) and the fourth electromagnetic valve (23), and statically measuring the value of TOC, NTU, COD of the water to be detected;
S4, after the step S3 is finished, the second electromagnetic valve (11) and the fourth electromagnetic valve (23) are closed, the first electromagnetic valve (10) and the third electromagnetic valve (17) are opened, the diaphragm pump (9) is started to work, water to be detected passes through the water inlet pipe, flows through the flowmeter (6), the TDS probe (7), the temperature probe (8), the diaphragm pump (9), the first electromagnetic valve (10), the third electromagnetic valve (17), the residual chlorine electrode (19) in the residual chlorine flow cell (18), the PH electrode (22) in the PH flow cell (21), the second one-way valve (20) and the drainage joint (26), the residual chlorine value is dynamically measured at the moment, then the diaphragm pump (9) is stopped to work, and the first electromagnetic valve (10) and the third electromagnetic valve (17) are closed, so that the PH value is statically measured;
s5, after the step S4 is finished, the system automatically performs self-cleaning operation, the first electromagnetic valve (10) and the third electromagnetic valve (17) are closed, the first pulse electromagnetic valve (4), the second electromagnetic valve (11) and the fourth electromagnetic valve (23) are opened, the water flow direction is the raw water inlet joint (1), the micro filter (3), the first pulse electromagnetic valve (4), the flowmeter (6), the TDS probe (7), the temperature probe (8), the diaphragm pump (9), the second electromagnetic valve (11), the PP filter element (12), the active carbon filter element (13), the RO filter element (14), the first one-way valve (16), the fourth electromagnetic valve (23), the detection module (24), the third one-way valve (25) and the water discharge joint (26), the flushing detection module (24) closes the fourth electromagnetic valve (23) when the measured value is equal to the pure water standard value, the third electromagnetic valve (17) is opened, the residual chlorine flushing electrode (19) and the PH electrode (22) are closed when the measured value is equal to the pure water standard value, and the circuit is cut off at the moment, and one test and flushing cycle is finished.
6. The control method of the water quality monitoring waterway control system for secondary water supply according to claim 5, comprising: s6, when the system needs to be calibrated, a second pulse electromagnetic valve (5), a second electromagnetic valve (11) and a fourth electromagnetic valve (23) are opened, a diaphragm pump (9) is started, water to be filtered passes through a water purification water inlet joint (2) and the second pulse electromagnetic valve (5), a flowmeter (6), a TDS probe (7), a temperature probe (8), the diaphragm pump (9) and the second electromagnetic valve (11), and is filtered through a PP filter element (12), an active carbon filter element (13) and an RO filter element (14), pure water coming out of the RO filter element (14) is used as calibration liquid, passes through a first one-way valve (16) and the fourth electromagnetic valve (23), enters the inside of a detection module (24), and water is introduced for 5min, so that calibration is completed.
7. The control method of the water quality monitoring waterway control system for secondary water supply according to claim 5, wherein in the testing process of step S3 and step S4, the waterway water inlet pipe of step S2 is switched, the quality detection is performed, the first pulse electromagnetic valve (4) is opened when raw water is measured, the second pulse electromagnetic valve (5) is closed, the second pulse electromagnetic valve (5) is opened when purified water is measured, and the first pulse electromagnetic valve (4) is closed.
8. The control method of the water path control system for secondary water supply quality monitoring according to claim 5, wherein the system adjusts the operating voltage of the diaphragm pump (9) according to the real-time water flow rate value measured by the flowmeter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911195941.4A CN110862160B (en) | 2019-11-29 | 2019-11-29 | Water quality monitoring waterway control system for secondary water supply and control method thereof |
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