CN112624390A - Water purification system capable of automatically adjusting wastewater discharge and control method - Google Patents
Water purification system capable of automatically adjusting wastewater discharge and control method Download PDFInfo
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- CN112624390A CN112624390A CN202011218186.XA CN202011218186A CN112624390A CN 112624390 A CN112624390 A CN 112624390A CN 202011218186 A CN202011218186 A CN 202011218186A CN 112624390 A CN112624390 A CN 112624390A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 173
- 239000002351 wastewater Substances 0.000 title claims abstract description 51
- 238000000746 purification Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000011010 flushing procedure Methods 0.000 claims abstract description 88
- 238000011084 recovery Methods 0.000 claims abstract description 61
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 33
- 239000012528 membrane Substances 0.000 claims abstract description 32
- 239000002699 waste material Substances 0.000 claims description 35
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 239000002455 scale inhibitor Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000002035 prolonged effect Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000011045 prefiltration Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/44—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
- C02F2209/40—Liquid flow rate
-
- 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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
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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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a water purification system capable of automatically adjusting wastewater discharge and a control method, and belongs to the technical field of water purification equipment. The method comprises the following steps: the pure water outlet of the reverse osmosis membrane filter is sequentially communicated with the pure water tank and the water outlet through a pipeline, the wastewater outlet of the reverse osmosis membrane filter is communicated with a flushing valve and a shutoff valve for pipeline flushing and wastewater discharge, and the flushing valve comprises three modes of full-open flushing, full-close closing and normal wastewater discharge; the first flow meter is arranged in front of a water inlet of the reverse osmosis membrane filter, the second flow meter is arranged in back of a pure water outlet of the reverse osmosis membrane filter, the first flow meter collects raw water yield in a working period, the second flow meter collects pure water yield in the working period, and recovery rate is obtained by dividing the pure water yield by the raw water yield.
Description
Technical Field
The invention relates to the technical field of water purification equipment, in particular to a water purification system capable of automatically adjusting wastewater discharge and a control method.
Background
At present, water is a national basic natural resource and a strategic economic resource and is a control element of ecological environment. The long-term water saving awareness of China society is not strong, water consumption is extensive, waste is serious, the utilization efficiency of water resources has a large gap with the international advanced level, the shortage of water resources becomes the bottleneck restriction of sustainable development, and water saving is a necessary requirement for entering the high-quality development stage.
With the advance of the water efficiency standard GB34914 in China, higher and higher requirements are put forward on the water saving requirements of the reverse osmosis water purifier, the water yield of waste water cannot be adjusted or adjusted by limited gears in the common water purification technology, continuous and automatic adjustment cannot be realized, the high recovery rate of the raw water under the condition of long service life is difficult to realize, flushing pipelines and waste discharge pipelines in part of water purification systems are independently arranged, the pipeline arrangement is complex, and the overall arrangement cost is high.
Disclosure of Invention
Aiming at the problems in the prior art, the water purification system and the control method for automatically adjusting the wastewater discharge aim to provide a system and a method for automatically adjusting the wastewater discharge.
The specific technical scheme is as follows:
a water purification system with automatic adjustment of wastewater discharge, comprising: the pure water outlet of the reverse osmosis membrane filter is sequentially communicated with the pure water tank and the water outlet through a pipeline, the wastewater outlet of the reverse osmosis membrane filter is communicated with a flushing valve and a shutoff valve for pipeline flushing and wastewater discharge, and the flushing valve comprises three modes of full-open flushing, full-close closing and normal wastewater discharge;
the first flow meter is arranged in front of a water inlet of the reverse osmosis membrane filter, the second flow meter is arranged in back of a pure water outlet of the reverse osmosis membrane filter, the first flow meter collects raw water yield in one working period, the second flow meter collects pure water yield in one working period, and the recovery rate is obtained by dividing the pure water yield by the raw water yield;
the recovery comprises at least three stages: in the first stage, the recovery rate is greater than a times of the preset value, in the second stage, the recovery rate is between the preset value and the a times of the preset value, and in the third stage, the recovery rate is less than the preset value, wherein a is any positive number; when the recovery rate is in the first stage, the flushing valve is in a normal waste discharge mode and the closing time is shortened until the recovery rate is adjusted to be between a times of the preset value and a times of the preset value; when the recovery rate is in the second stage, the flushing valve is in a normal waste discharge mode and the working pulse is kept unchanged; and when the recovery rate is in the third stage, the flushing valve is in a normal waste discharge mode and the closing time is prolonged until the recovery rate is adjusted to be between the preset value and a times of the preset value.
The water purification system capable of automatically adjusting wastewater discharge is characterized in that the front part of the water inlet of the reverse osmosis membrane filter is sequentially communicated with the first valve body, the preposed filtering unit and the booster pump through pipelines.
The water purification system with the automatic wastewater discharge adjustment function is characterized by further comprising a controller, wherein the controller is in communication connection with the first valve body, the booster pump, the first flowmeter, the second flowmeter and the flushing valve, and preset values of the recovery rate are preset in the controller.
The water purification system capable of automatically adjusting wastewater discharge also has the characteristics that the system further comprises a scale inhibitor filter element, and the scale inhibitor filter element is arranged between the booster pump and the front-mounted filter unit.
The water purification system capable of automatically adjusting wastewater discharge is further characterized in that a water level sensor is further arranged in the pure water tank and is in communication connection with the controller, and when the water level sensor detects that the water level in the pure water tank is at a high level, the controller closes the booster pump, the first valve body and the flushing valve.
A control method for automatic adjustment of wastewater discharge comprises the following steps:
when the water level sensor detects that the water level in the pure water tank is low, the first valve body, the flushing valve and the booster pump are started, and the water purification system starts to enter a normal water production state;
in the water production process, the first flow meter transmits the measured raw water yield parameter to the controller, and the second flow meter transmits the measured pure water yield parameter to the controller;
the controller divides the pure water yield obtained by actual measurement by the raw water yield to obtain the recovery rate, and compares the recovery rate with a preset value, thereby controlling and adjusting the pulse operation time when the flushing valve is in normal waste discharge;
the flushing valve is switched to a full-open flushing mode after the accumulated work of the water inlet system for a first preset time, and the starting duration time is a second preset time;
when the water level sensor detects that the water level in the pure water tank is higher, the booster pump, the first valve body are closed, the flushing valve is in a full-off mode, and the water purification system stops water production.
The control method for automatically adjusting the wastewater discharge also has the characteristics that the recovery rate is more than a times of the preset value, the flushing valve is in a normal wastewater discharge mode, the opening time is unchanged, and the closing time is shortened;
the recovery rate is between a times of the preset value and a preset value, the flushing valve is in a normal waste discharge mode, and the opening time and the closing time are unchanged;
the recovery rate is less than the preset value, the flushing valve is in a normal waste discharge mode, the opening time is unchanged, and the closing time is prolonged.
The control method for automatically adjusting the wastewater discharge is also characterized in that the closing time of the flushing valve in the normal wastewater discharge mode is longer than the opening time of the flushing valve, the minimum adjusting value of the closing time is b seconds, and b is any positive number.
The above-mentioned control method for automatically adjusting wastewater discharge is further characterized in that the first preset time is the time when the TDS value of the wastewater end of the water inlet system reaches the highest concentration, and the second preset time is the time required for emptying the liquid corresponding to the volume of the filter element in the reverse osmosis membrane filter.
The above-mentioned control method for automatically regulating waste water discharge also has the characteristics that the opening time and closing time of the flushing valve in the normal discharge mode are any time within 1-60 seconds.
The positive effects of the technical scheme are as follows:
according to the water purification system and the control method for automatically adjusting wastewater discharge, provided by the invention, the flow of pure water and the flow of the two ends of raw water are collected, the recovery rate of the raw water is automatically calculated through the controller, and after the raw water is compared with a preset value, the start-stop pulse time of the flushing valve at the wastewater discharge end is controlled to adjust the flow of discharged wastewater, so that the continuous adjustment of wastewater discharge is realized, and the high recovery rate of the raw water is realized; meanwhile, a pipeline flushing mode is added in the flushing valve, the flushing time interval is adjusted and is used for flushing the reverse osmosis membrane, and a scale inhibitor filter element is added in a pipeline in front of the booster pump, so that the scaling risk under the condition of high recovery rate is reduced; in addition, the waste discharge pipeline and the flushing pipeline are combined into a whole, so that the pipeline arrangement of the water purification system is simplified, the valve is multipurpose, and the system setting cost is reduced.
Drawings
Fig. 1 is a system configuration diagram of an embodiment of a water purification system and a control method for automatically adjusting wastewater discharge according to the present invention.
In the drawings: 1. a first valve body; 2. a pre-filter unit; 3. a scale inhibitor filter element; 4. a booster pump; 5. a first flow meter; 6. a reverse osmosis membrane filter; 7. a second flow meter; 8. a flush valve; 9. a throttle valve; 10. a pure water tank; 11. a water outlet; 12. and a controller.
The solid lines in the figure are the pipe connections and the dashed lines are the communication connections.
Detailed Description
In order to make the technical means, creation features, achievement objects and effects of the present invention easy to understand, the following embodiment is specifically described with reference to fig. 1 for a water purification system and a control method for automatic adjustment of wastewater discharge.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the water purification system with automatic adjustment of wastewater discharge, a pure water outlet of a reverse osmosis membrane filter 6 sequentially passes through a pipeline to be communicated with a pure water tank 10 and a water outlet 11, the wastewater outlet of the reverse osmosis membrane filter 6 is communicated with a flushing valve 8 and a cut-off valve 9, the flushing valve 8 can be used for pipeline flushing and can also be used for wastewater discharge, wherein the flushing valve 8 comprises three modes of full-open flushing, full-close and normal wastewater discharge, the flushing valve 8 realizes multiple purposes, the pipeline arrangement of the water purification system is simplified, the pipeline arrangement cost is reduced, when the flushing valve 8 is in the full-open flushing mode, the flushing valve 8 is opened for a few seconds every time of closing for normal wastewater discharge operation, when the flushing valve 8 is in the full-open flushing mode, namely when the wastewater discharge operation of the flushing valve 8 is accumulated to the preset time, the flushing valve 8 is opened fully, the reverse osmosis membrane in the reverse osmosis membrane filter 6 is flushed, when the flush valve 8 is in the full-off mode, the water purification system is in a water production stop state, namely the water purification system is in a closed state. Specifically, two loops are arranged inside the flushing valve 8, one loop is used for controlling normal waste discharge, the other loop is used for controlling pipeline flushing, switching between normal waste discharge and full-on flushing is controlled through switching of the two loops, and when the two loops are closed, full-off of the flushing valve 8 is achieved.
The first flow meter 5 is arranged in front of the water inlet of the reverse osmosis membrane filter 6, the second flow meter 7 is arranged in back of the pure water outlet of the reverse osmosis membrane filter 6, the first flow meter 5 collects raw water outlet amount in one working period and feeds back the raw water outlet amount to the controller 12 in a signal form, the second flow meter 7 collects pure water outlet amount in one working period and feeds back the pure water outlet amount to the controller 12 in a signal form, and the recovery rate is obtained by dividing the pure water outlet amount by the raw water outlet amount.
The recovery comprises at least three stages: in the first stage, the recovery rate is greater than a times of the preset value, in the second stage, the recovery rate is between the preset value and the a times of the preset value, and in the third stage, the recovery rate is less than the preset value, wherein a is any positive number; when the recovery rate is in the first stage, the flushing valve 8 is in the normal waste discharge mode and the closing time is shortened until the recovery rate is adjusted to be between the preset value and a times of the preset value; when the recovery rate is in the second stage, the flushing valve 8 is in a normal waste discharge mode and the working pulse is kept unchanged; when the recovery rate is in the third stage, the flushing valve 8 is in the normal waste discharge mode and the closing time is prolonged until the recovery rate is adjusted to be between the preset value and a times of the preset value, preferably, a can be 1.02, 1.03, 1.04, 1.1 and 1.2 times, and can be adjusted according to actual conditions.
In a preferred embodiment, as shown in fig. 1, the front part of the water inlet of the reverse osmosis membrane filter 6 is sequentially communicated with a first valve body 1, a pre-filtering unit 2 and a booster pump 4 through pipelines, wherein the water inlet of the first valve body 1 is communicated with the inlet of the water purification system, the water outlet of the first valve body 1 is communicated with the water inlet of the pre-filtering unit 2, the water outlet of the pre-filtering unit 2 is communicated with the water inlet of the booster pump 4, the water outlet of the booster pump 4 is communicated with the water inlet of the reverse osmosis membrane filter 6, and the valve body and the filtering structure in front of the pre-filter can be adjusted according to actual conditions.
In a preferred embodiment, as shown in fig. 1, the recovery rate monitoring device further comprises a controller 12, the controller 12 is in communication connection with the first valve body 1, the booster pump 4, the first flow meter 5, the second flow meter 7 and the flushing valve 8, the controller 12 controls the opening and closing time and the opening and closing time of the first valve body 1, the booster pump 4 and the flushing valve 8, the first flow meter 5 and the second flow meter 7 feed back obtained parameters to the controller 12, the controller 12 is preset with a preset value of the recovery rate, and the controller 12 is used for comparing the recovery rate with the preset value. In particular, the first valve body 1 and the flushing valve 8 may be solenoid valves.
In a preferred embodiment, as shown in fig. 1, the reverse osmosis membrane further comprises a scale inhibitor filter element 3, wherein the scale inhibitor filter element 3 is arranged between the booster pump 4 and the pre-filter unit 2, under the state of high recovery rate, the concentration polarization before the reverse osmosis membrane is high, the scaling risk is increased, and after the scale inhibitor is added into a pipeline, the scaling risk can be effectively reduced, so that the service life of the reverse osmosis filter element is prolonged.
In a preferred embodiment, as shown in fig. 1, a water level sensor is further disposed in the pure water tank 10, the water level sensor is in communication connection with the controller 12, when the water level sensor detects that the water level in the pure water tank 10 is at a high level, the controller 12 turns off the booster pump 4, the first valve body 1 and the flushing valve 8 (i.e., switches the flushing valve 8 to a fully-off state), and further stops water production, and when the water level sensor detects that the water level in the pure water tank 10 is at a low level, the controller 12 turns on the booster pump 4, the first valve body 1 and the flushing valve 8 again (switches the flushing valve 8 to a normal waste discharge state), and resumes water production.
A control method for automatic adjustment of wastewater discharge comprises the following steps:
when the water level sensor detects that the water level in the pure water tank 10 is low, the first valve body 1, the flushing valve 8 and the booster pump 4 are started, and the water purification system starts to enter a normal water production state;
in the water production process, the first flow meter 5 transmits the measured raw water yield parameter to the controller, and the second flow meter 7 transmits the measured pure water yield parameter to the controller;
the controller 12 divides the pure water yield obtained by actual measurement by the raw water yield to obtain the recovery rate, and compares the recovery rate with a preset value, thereby controlling and adjusting the pulse operation time of the flushing valve 8 during normal waste discharge;
the flushing valve 8 is switched to a full-open flushing mode after the accumulated work of the water inlet system is carried out for a first preset time, and the starting duration time is a second preset time;
when a water level sensor (not shown in the figure) detects that the water level in the pure water tank 10 is high, the booster pump 4 and the first valve body 1 are closed, the flushing valve 8 is in a full-off mode, and the water purification system stops water production.
In a preferred embodiment, as shown in fig. 1, the recovery rate is a times greater than the preset value, the flush valve 8 is in the normal waste discharge mode, the opening time is unchanged, and the closing time is shortened; the recovery rate is between the preset value and a times of the preset value, the flushing valve 8 is in a normal waste discharge mode, and the opening time and the closing time are unchanged; the recovery rate is less than the preset value, the flushing valve 8 is in a normal waste discharge mode, the opening time is unchanged, and the closing time is prolonged.
In a preferred embodiment, as shown in fig. 1, the closing time of the flushing valve 8 in the normal waste mode is longer than the opening time thereof, and the minimum adjustment value of the closing time is b seconds, b is any positive number, and specifically, b is 0.1 seconds, or 0.2 seconds, or 0.3 seconds, etc., which can be selected according to actual conditions.
In a preferred embodiment, as shown in fig. 1, the first preset time is the time when the TDS value of the wastewater end of the water inlet system reaches the highest concentration, and the second preset time is the time required for emptying the liquid corresponding to the volume of the filter element in the reverse osmosis membrane filter 6, so that the reverse osmosis membrane is periodically flushed, and the scaling risk under the condition of high recovery rate is reduced.
In a preferred embodiment, as shown in fig. 1, during the water production process, the opening time and the closing time of the flushing valve 8 in the normal waste discharge mode are any time within 1-60 seconds, generally when the flushing valve 8 is in the normal waste discharge mode, the flushing valve 8 is opened for 1 second of waste discharge and closed for 3 seconds of waste discharge, and the closing and waste discharge time can be adaptively adjusted according to the recovery rate, the specific waste discharge time per closing can be increased or decreased by a certain multiple of the minimum adjustment value, the adjustment time is more flexible, and the wastewater discharge time can be flexibly adjusted, thereby realizing the high recovery rate of raw water.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a water purification system of waste water discharge automatic adjustment which characterized in that includes:
the pure water outlet of the reverse osmosis membrane filter is sequentially communicated with the pure water tank and the water outlet through a pipeline, the wastewater outlet of the reverse osmosis membrane filter is communicated with a flushing valve and a shutoff valve for pipeline flushing and wastewater discharge, and the flushing valve comprises three modes of full-open flushing, full-close and normal wastewater discharge;
the reverse osmosis membrane water recovery system comprises a reverse osmosis membrane filter, a first flow meter, a second flow meter and a water recovery unit, wherein the first flow meter is arranged in front of a water inlet of the reverse osmosis membrane filter, the second flow meter is arranged in rear of a pure water outlet of the reverse osmosis membrane filter, the first flow meter collects raw water yield in one working period, the second flow meter collects pure water yield in one working period, and the recovery rate is obtained by dividing the pure water yield by the raw water yield;
the recovery comprises at least three stages: the recovery rate is greater than a times of a preset value in the first stage, the recovery rate is between the preset value and the a times of the preset value in the second stage, and the recovery rate is less than the preset value in the third stage, wherein a is any positive number; when the recovery rate is in the first stage, the flushing valve is in a normal waste discharge mode and the closing time is shortened until the recovery rate is adjusted to be between a times of a preset value and a preset value; when the recovery rate is in the second stage, the flushing valve is in a normal waste discharge mode and the working pulse is kept unchanged; and when the recovery rate is in the third stage, the flushing valve is in a normal waste discharge mode, and the closing time is prolonged until the recovery rate is adjusted to be between a times of the preset value and a times of the preset value.
2. The water purification system with automatic adjustment of wastewater discharge as claimed in claim 1, wherein the front part of the water inlet of the reverse osmosis membrane filter is sequentially communicated with the first valve body, the pre-filtering unit and the booster pump through pipelines.
3. The water purification system with automatic wastewater discharge regulation function as claimed in claim 2, further comprising a controller, wherein the controller is in communication connection with the first valve body, the booster pump, the first flow meter, the second flow meter and the flushing valve, and the controller is preset with a preset value of the recovery rate.
4. The water purification system with automatic wastewater discharge adjustment according to claim 2, further comprising a scale inhibitor filter element disposed between the booster pump and the pre-filter unit.
5. The water purification system with automatic wastewater discharge adjustment function as claimed in claim 3, wherein a water level sensor is further disposed in the purified water tank, the water level sensor is in communication with the controller, and when the water level sensor detects that the water level in the purified water tank is at a high level, the controller closes the booster pump, the first valve body and the flushing valve.
6. A control method for automatically adjusting wastewater discharge is characterized by comprising the following steps:
when the water level sensor detects that the water level in the pure water tank is low, the first valve body, the flushing valve and the booster pump are started, and the water purification system starts to enter a normal water production state;
in the water production process, the first flow meter transmits the measured raw water yield parameter to the controller, and the second flow meter transmits the measured pure water yield parameter to the controller;
the controller divides the pure water yield obtained by actual measurement by the raw water yield to obtain the recovery rate, and compares the recovery rate with a preset value, so as to control and adjust the pulse operation time of the flushing valve during normal waste discharge;
the flushing valve is switched to a full-open flushing mode after the accumulated work of the water inlet system for a first preset time, and the starting duration time is a second preset time;
when the water level sensor detects that the water level in the pure water tank is higher, the booster pump, the first valve body are closed, the flushing valve is in a full-off mode, and the water purification system stops water production.
7. The method as claimed in claim 6, wherein the recovery rate is a times greater than a preset value, the flushing valve is in normal waste discharge mode, the opening time is unchanged, and the closing time is shortened;
the recovery rate is between a times of a preset value and a preset value, the flushing valve is in a normal waste discharge mode, and the opening time and the closing time are unchanged;
the recovery rate is less than the preset value, the flushing valve is in a normal waste discharge mode, the opening time is unchanged, and the closing time is prolonged.
8. The method as claimed in claim 6, wherein the flushing valve is in normal waste discharge mode and has a closing time longer than its opening time, and the minimum adjustment value of the closing time is b seconds, and b is any positive number.
9. The method of claim 6, wherein the first predetermined time is a time when a TDS value at a waste water end of the water inlet system reaches a maximum concentration, and the second predetermined time is a time required for draining a volume of liquid corresponding to a volume of a filter element in the RO membrane filter.
10. The method as claimed in claim 6, wherein the opening time and the closing time of the flushing valve in the normal waste discharge mode during the water production process are any time within 1-60 seconds.
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| CN202011218186.XA CN112624390A (en) | 2020-11-04 | 2020-11-04 | Water purification system capable of automatically adjusting wastewater discharge and control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113995310A (en) * | 2021-12-08 | 2022-02-01 | 珠海格力电器股份有限公司 | Water purifying and drinking equipment |
| CN115064414A (en) * | 2022-08-17 | 2022-09-16 | 优口（广东）环境系统有限公司 | Reverse osmosis water purification unit |
| CN115093001A (en) * | 2022-06-23 | 2022-09-23 | 海峡建工集团有限公司 | Sewage treatment system and method based on big data |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207210032U (en) * | 2017-08-24 | 2018-04-10 | 九阳股份有限公司 | A kind of reverse osmosis water purification units |
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| CN207210032U (en) * | 2017-08-24 | 2018-04-10 | 九阳股份有限公司 | A kind of reverse osmosis water purification units |
| CN208617434U (en) * | 2018-06-15 | 2019-03-19 | 固安天天一泉环保科技有限公司 | Counter-infiltration system rate of recovery self-checking device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113995310A (en) * | 2021-12-08 | 2022-02-01 | 珠海格力电器股份有限公司 | Water purifying and drinking equipment |
| CN113995310B (en) * | 2021-12-08 | 2022-09-09 | 珠海格力电器股份有限公司 | Water purifying and drinking equipment |
| CN115093001A (en) * | 2022-06-23 | 2022-09-23 | 海峡建工集团有限公司 | Sewage treatment system and method based on big data |
| CN115093001B (en) * | 2022-06-23 | 2023-08-18 | 海峡建工集团有限公司 | Sewage treatment system and method based on big data |
| CN115064414A (en) * | 2022-08-17 | 2022-09-16 | 优口（广东）环境系统有限公司 | Reverse osmosis water purification unit |
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Application publication date: 20210409 |