CN112174271A - Magnetic separation automatic control system for treating initial rainwater - Google Patents
Magnetic separation automatic control system for treating initial rainwater Download PDFInfo
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- CN112174271A CN112174271A CN202011217793.4A CN202011217793A CN112174271A CN 112174271 A CN112174271 A CN 112174271A CN 202011217793 A CN202011217793 A CN 202011217793A CN 112174271 A CN112174271 A CN 112174271A
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- 238000007885 magnetic separation Methods 0.000 title claims abstract description 118
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 224
- 239000010865 sewage Substances 0.000 claims abstract description 128
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 239000000701 coagulant Substances 0.000 claims description 118
- 239000007788 liquid Substances 0.000 claims description 89
- 239000010802 sludge Substances 0.000 claims description 75
- 238000005345 coagulation Methods 0.000 claims description 41
- 230000015271 coagulation Effects 0.000 claims description 41
- 238000011084 recovery Methods 0.000 claims description 24
- 238000011010 flushing procedure Methods 0.000 claims description 16
- 230000001276 controlling effect Effects 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000005389 magnetism Effects 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims 3
- 239000006148 magnetic separator Substances 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 238000000746 purification Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009123 feedback regulation Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910001385 heavy metal Inorganic materials 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- 238000011144 upstream manufacturing Methods 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- 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
- C02F2209/11—Turbidity
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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
- C02F2209/42—Liquid level
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a magnetic separation automatic control system for treating initial rainwater, which comprises a first water tank, a magnetic separation sewage treatment system and a controller, wherein the first water tank is used for communicating a sewage pipe network and storing rainwater; the control system is applied to the field of rainwater treatment, can realize functions of online monitoring, real-time starting, automatic operation parameter adjustment and the like, and is particularly suitable for treating initial rainwater.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a magnetic separation automatic control system for treating initial rainwater.
Background
As is well known, in the process of rainfall, rainwater firstly passes through the atmosphere and then falls into the ground to be gathered into rivers, lakes and seas, so that initial rainwater pollutants mainly come from the atmosphere and the ground, on one hand, because the atmosphere contains a large amount of acid gas, automobile exhaust, industrial waste gas and the like, harmful substances are dissolved into the rainwater after rainfall, and on the other hand, asphalt concrete roads, asphalt felt roof surfaces, iron rust of buildings and the like on the ground contain a large amount of pollutants such as organic matters, heavy metals, suspended matters and the like; the pollutants show the characteristics that the pollution concentration is particularly high in the early stage of rain water along with the interval of rainfall time and the magnitude of rainfall, and the concentration is gradually reduced along with the increase of rainfall.
If initial stage rainwater directly discharges, then can cause the serious pollution of environment, consequently, can carry out rain sewage reposition of redundant personnel to initial stage rainwater among the prior art and handle, and the first pond of rain is just discharged to interception initial stage rainwater and purify the initial stage rainwater after to general way, thereby can reduce the pollutant in initial stage rainwater by a wide margin, make the initial stage rainwater after the purification also can regard as the reuse of reclaimed water. Because the initial rainwater pollutants contain more particulate matters such as silt, sundries, garbage and the like, after the initial rainwater and even the rainwater in the middle and later periods are received by the first water tank, if the initial rainwater and the rainwater are discharged into a river channel or a sewage pipe network without treatment, silting effect is generated, the subsequent dredging engineering amount is large, and the safety risk is also large; the traditional regulation and storage facility only considers storing initial rainwater and lifting the initial rainwater to a sewage treatment plant for treatment through a pump; however, due to the influence of problems such as delay of pipe network construction and load of sewage treatment plants, the stored initial rainwater has the problems of difficult transportation and high cost, while the system capable of treating initial sewage on site disclosed in the prior art, such as the online rainwater treatment system disclosed in chinese patent CN 207632572U, directly arranges the sewage treatment equipment in the rainwater treatment tank (equivalent to the first water tank), although the initial sewage can be treated on site, there are some disadvantages, for example, automatic control of the purification process of the initial rainwater cannot be realized; the whole set of sewage treatment equipment has the risk of being flooded, and especially when the drainage pool or the downstream of the drainage pool is blocked in a rainstorm season, the problem needs to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a magnetic separation control system, is applied to the field of rainwater treatment, can realize the functions of online monitoring, real-time starting, remote control and automatic adjustment of operation parameters, and is particularly suitable for treating initial rainwater.
The technical scheme adopted by the invention is as follows:
in order to solve the problem of automatically starting the initial rainwater treatment system in the rainy period, the invention provides a magnetic separation automatic control system for treating initial rainwater, which comprises a first water tank, a magnetic separation sewage treatment system and a controller, wherein,
the first water tank is used for communicating a sewage pipe network and storing rainwater, the magnetic separation sewage treatment system is communicated with the first water tank,
the device comprises a controller, a first water tank, a magnetic separation sewage treatment system, a first liquid level meter, a first controller and a second controller, wherein the first water tank is internally provided with the first liquid level meter, the first liquid level meter and the magnetic separation sewage treatment system are respectively connected with the controller, the first liquid level meter is used for collecting the liquid level height of the first water tank and transmitting the liquid level height to the controller, when the liquid level height of the first water tank is larger than or equal to the set liquid level height, the controller controls the magnetic separation sewage treatment system to be started, and the magnetic separation sewage treatment. In this scheme, set up solitary first pond, and utilize first pond to separate initial stage rainwater, and through setting up first level gauge, and make first level gauge link to each other with the controller, so that utilize first level gauge to detect the real-time liquid level height in first pond, make at the initial stage of raining, when the liquid level height in first pond is greater than or equal to the liquid level height that sets for, the controller can automatic control magnetic separation sewage treatment system and start, so that in time purify and discharge the rainwater in first pond, thereby reach continuous processing's purpose, furthermore, in this scheme, magnetic separation sewage treatment system does not set up in first pond, the setting of the two mutual independence, thereby can effectively prevent to lead to the problem that magnetic separation sewage treatment system is flooded because of the water level in first pond is too high.
In order to improve the safety, the pool alarm device further comprises an alarm device, the alarm device is connected with the controller, and when the liquid level height of the first pool is larger than or equal to the set liquid level height, the controller controls the alarm device to give out an alarm sound with set duration. So as to prompt an operator that the magnetic separation sewage treatment system is about to start up for operation.
In order to solve the problem that the amount of rainwater entering the first water tank is controllable in the second aspect of the invention, the invention further comprises a water inlet valve, wherein the water inlet valve is arranged between the first water tank and the sewage pipe network and is connected with the controller, and the controller is used for controlling the opening degree of the water inlet valve. Namely, the rainwater in the sewage pipeline enters the first water tank through the water inlet valve, and the opening degree of the water inlet valve can be reasonably controlled by the controller according to the liquid level condition in the first water tank by arranging the water inlet valve, so that the amount of the rainwater entering the first water tank is controllable.
The third aspect of the invention aims to solve the problem that the controller reasonably controls the water inlet valve, and further comprises a second liquid level meter arranged in the sewage pipe network, wherein the second liquid level meter is connected with the controller and is used for detecting the liquid level height of rainwater in the sewage pipe network and transmitting the liquid level height to the controller, and when rainwater exists in the sewage pipe network or the liquid level height of the sewage pipe network is increased, the controller controls the water inlet valve to act. The second liquid level meter is arranged in the sewage pipe network, so that the controller can reasonably control the water inlet valve according to data collected by the second liquid level meter, such as controlling the opening/closing of the water inlet valve, controlling the opening degree of the water inlet valve and the like, and the process of rainwater entering the first water tank from the sewage pipe network is controllable.
For the volume of the rainwater that control gets into magnetism separation sewage treatment system, further, still include the governing valve of intaking, the governing valve of intaking set up in between first pond and the magnetism separation sewage treatment system, and with the controller links to each other, and the controller is used for controlling the aperture of governing valve of intaking. Namely, set up into water governing valve between first pond and magnetic separation sewage treatment system, and the aperture of the governing valve of just intaking can be controlled through the controller for the controller can be according to the aperture of the reasonable control governing valve of intaking of the liquid level condition in the first pond, thereby reaches the purpose of adjusting the rainfall volume that gets into among the magnetic separation sewage treatment system.
The third aspect of the invention aims to solve the problem that the magnetic separation sewage treatment system can be well pre-started, self-checked and the like due to rain sensing, and further comprises a rain gauge, wherein the rain gauge is connected with the controller and is used for monitoring whether rain falls or not. When the rain gauge monitors that rain falls, a signal is sent to the controller, and the controller controls the magnetic separation sewage treatment system to perform pre-starting early warning, self-checking and other work according to the signal, so that the magnetic separation sewage treatment system can be started quickly and normally when a starting signal is received subsequently, and initial rainwater is effectively purified.
The fourth aspect of the invention aims to solve the problem that the effluent of the initial magnetic separation sewage treatment system does not reach the standard, and further comprises a first turbidity meter, a bypass return valve and an effluent valve, wherein,
the magnetic separation sewage treatment system is provided with a water outlet pipeline and a return pipeline, one end of the return pipeline is communicated with the water outlet pipeline, the other end of the return pipeline is communicated with the first water tank, the bypass return valve is arranged on the return pipeline, the first turbidity meter and the water outlet valve are respectively arranged on the water outlet pipeline, and the water outlet valve is positioned at the downstream of the return pipeline;
the first turbidity meter, the bypass return valve and the water outlet valve are respectively connected with the controller. In this scheme, whether the play water that detects magnetic separation sewage treatment system through setting up first turbidity appearance is up to standard, when detecting that play water is not up to standard, especially at the initial stage of magnetic separation sewage treatment system operation, the controller control outlet valve is closed, the control bypass backward flow valve is opened, so that go out water can all flow back to the first pond in upper reaches, prevent to discharge not up to standard water, when detecting that play water is up to standard, the controller control outlet valve is opened, the control bypass backward flow valve is closed, so that it can all discharge magnetic separation sewage treatment system via outlet conduit, reach the mesh of discharging up to standard.
The invention also provides a controller, which is used for controlling the magnetic separation sewage treatment system to be closed when the detected turbidity is smaller than the set turbidity. In the scheme, the second turbidity meter and the first flow meter are arranged, so that the turbidity of rainwater entering the magnetic separation sewage treatment system and the amount of rainwater entering the magnetic separation sewage treatment system can be respectively detected, the controller can accurately master the rainwater amount and the turbidity of the rainwater, various parameters in the magnetic separation sewage treatment system can be reasonably controlled according to the rainwater amount and the turbidity, such as the addition amount of a coagulant, the addition amount of a coagulant aid, the addition amount of a magnetic seed and the like are accurately calculated and controlled, and the rainwater can be better purified; and when the turbidity detected by the second turbidity meter is smaller than the set turbidity, the middle and later period rainwater collected in the first water tank is shown to be cleaner, and the purification treatment is not needed, and at the moment, the controller automatically controls the magnetic separation sewage treatment system to be closed.
In order to facilitate centralized drainage of purified rainwater, the rainwater purifier further comprises a second water tank, a third liquid level meter and a clean water lifting pump, wherein the water outlet pipeline is communicated with the second water tank, the third liquid level meter is arranged in the second water tank and connected with the controller, and the clean water lifting pump is arranged on a drainage pipeline of the second water tank and connected with the controller and used for outputting rainwater in the second water tank. Utilize the third level gauge can real-time supervision second pond liquid level in the pond, when the liquid level height in second pond reached the liquid level height that sets for, the controller can control clear water elevator pump and start to arrange outside or the retrieval and utilization with the rainwater in the second pond.
Preferably, the magnetic separation sewage treatment system comprises a magnetic coagulation unit, a magnetic separation unit and a magnetic recovery unit, wherein,
the magnetic coagulation unit comprises a magnetic coagulation device, a coagulant adding device and a coagulant aid adding device, the coagulant adding device is communicated with the magnetic coagulation device through a coagulant adding pump, the coagulant adding device and the coagulant adding pump are respectively communicated with the controller, the coagulant adding device is used for storing and blending coagulants, and the coagulant adding pump is used for conveying coagulants to the magnetic coagulation device under the control of the controller;
the coagulant aid adding device is communicated with the magnetic coagulation device through a coagulant aid adding pump, the coagulant aid adding device and the coagulant aid adding pump are respectively communicated with the controller, the coagulant aid adding device is used for storing and blending coagulant aids, and the coagulant aid adding pump is used for conveying the coagulant aids to the magnetic coagulation device under the control of the controller;
the magnetic coagulation device is used for providing a place for mixing rainwater to be treated, magnetic seeds, a coagulant and a coagulant aid;
the magnetic separation unit is including the magnetic separation machine that is used for separating magnetic wadding group, the magnetic recovery unit is including the magnetic recovery device who is used for retrieving the magnetism kind, magnetism coagulate the device respectively with first pond reaches the magnetic separation machine is linked together, the delivery port of magnetic separation machine passes through outlet conduit with the second pond is linked together, the mud outlet of magnetic separation machine pass through the pipeline with the magnetic recovery device is linked together, and the magnetic recovery device passes through the pipeline and is linked together with the magnetic separation device.
In order to solve the problem of automatic control of the adding amount of the coagulant and the coagulant aid in the sixth aspect of the invention, the invention further comprises a detection component, wherein the detection component is arranged on the magnetic coagulation device or between the magnetic coagulation device and the magnetic separator and is connected with the controller for detecting the content of suspended matters in the sewage, and the controller controls the coagulant adding pump and the coagulant aid adding pump according to the content. The purpose of feedback regulation is achieved, so that the conveying amounts of the coagulant adding pump and the coagulant aid adding pump are automatically and reasonably regulated according to the actual condition of the sewage, and the problem of automatic control of the adding amounts of the coagulant and the coagulant aid can be effectively solved.
Preferably, the detection component is an online SS instrument or a sludge concentration meter. So as to automatically and accurately detect the content of suspended matters in the sewage.
The seventh aspect of the invention aims to solve the problem of sludge post-treatment, and further comprises a third water tank for storing sludge and a sludge dewatering unit, wherein a sludge discharge port of the magnetic recovery device is communicated with the third water tank through a pipeline, the first water tank is communicated with the third water tank through a sludge pipeline, a first sludge pump is arranged on the sludge pipeline, a fourth liquid level meter is arranged in the third water tank,
the sludge dewatering unit comprises a sludge dewatering machine and a coagulant aid adding device, the coagulant aid adding device is communicated with the sludge dewatering machine through a coagulant aid adding pump, the coagulant aid adding device is used for storing and mixing coagulant aids,
the third water tank is communicated with the sludge dewatering machine through a sludge discharge pipeline which is respectively provided with a second sludge pump and a second flowmeter,
and the fourth liquid level meter, the first sludge pump, the second flowmeter, the sludge dewatering machine, the coagulant aid adding device and the coagulant aid adding pump are respectively connected with the controller. Through setting up solitary third pond, both be convenient for the temporary storage of mud, be convenient for again carry out high-efficient, accurate aftertreatment of accomplishing mud with the cooperation of sludge dewatering unit.
The eighth aspect of the invention aims to solve the problems that in the actual operation process, when the water inlet condition of the first water tank changes, the water quality of the outlet water of the magnetic coagulation device fluctuates, the adding amount of a coagulant and a coagulant aid fluctuates greatly, and frequent adjustment is needed. In the scheme, the flushing pump is arranged, the controller is used for controlling the flushing pump to be started or not, and when the concentration detected by the second turbidity meter is lower than the set concentration, the controller controls the flushing pump to be started. In this scheme, when the second turbidity meter detects that the sewage concentration that gets into magnetic coagulation device is less than the concentration of setting for, promptly, the concentration of intaking is on the low side and not reach standard, the controller control flush pump opens, so that wash away the long-pending silt of first pond bottom, make long-pending silt mix with the water in first pond, improve the concentration of pollutant in the sewage, make the sewage concentration that gets into magnetic coagulation device can keep unanimous basically, can effectively avoid magnetic coagulation device's play water quality to appear fluctuating by a wide margin, coagulant and coagulant aid's input is undulant greatly, need frequently adjust scheduling problem, in order to alleviate follow-up system's regulation pressure, can also effectively shorten corresponding processing time, improve sewage treatment quality and efficiency.
Preferably, the flushing pump is in communication with the bottom and/or side walls of the first basin.
In order to solve the problem of automatically cleaning the residual sludge at the bottom of the first water tank in the ninth aspect of the present invention, preferably, when the water inlet valve is in a closed state and the liquid level in the first water tank is lower than the set minimum liquid level, the flushing pump and the first sludge pump are respectively turned on under the control of the controller. When the water inlet valve is in a closed state and the liquid level height in the first water tank is lower than the set lowest liquid level height, the system does not need to be reused for continuously purifying rainwater, at the moment, the bottom of the first water tank can be flushed by using the water pressure provided by the flushing pump, and the first sludge pump can be simultaneously started, so that sludge can directly enter the third water tank through the sludge pipeline.
Preferably, the controller is a single chip microcomputer, a PLC or an ARM chip and the like.
Compared with the prior art, the automatic magnetic separation control system for treating initial rainwater provided by the invention is applied to the field of rainwater treatment, can realize the functions of online monitoring, real-time starting, automatic operation parameter adjustment and the like, and is particularly suitable for treating initial rainwater.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an automatic magnetic separation control system according to embodiment 1 of the present invention.
Fig. 2 is a second schematic structural diagram of an automatic magnetic separation control system provided in embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of an automatic magnetic separation control system according to embodiment 2 of the present invention.
Description of the drawings
The device comprises a first water tank 101, a magnetic separation sewage treatment system 102, a second water tank 103, a first liquid level meter 104, a water inlet valve 105, a sewage pipe network 106, a second liquid level meter 107, a water inlet adjusting valve 108, a rain gauge 109, a first turbidity meter 110, a bypass return valve 111, a water outlet valve 112, a second turbidity meter 113, a first flow meter 114, a third liquid level meter 115, a clean water lifting pump 116, a water outlet pipeline 117, a return pipeline 118, a water outlet pipeline 106, a water outlet pipeline 104, a water outlet pipeline 105, a,
A magnetic coagulation device 201, a magnetic separator 202, a magnetic recovery device 203, a coagulant adding device 204, a coagulant adding pump 205, a coagulant adding device 206, a coagulant adding pump 207, a detection part 208,
A third water tank 301, a sludge pipeline 302, a first sludge pump 303, a fourth liquid level meter 304, a sludge dewatering machine 305, a sludge discharge pipeline 306, a second sludge pump 307 and a second flowmeter 308.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 or 2, the present embodiment provides an automatic magnetic separation control system for treating initial rainwater, including a first water tank 101 for storage, a magnetic separation sewage treatment system 102, and a controller, as shown in fig. 1 or 2, wherein,
the first basin 101 is adapted to communicate with a sewer network 106, the sewer network 106 being a rainwater network commonly used in the art, the first basin 101 being adapted to store rainwater, in particular primary rainwater,
as shown in fig. 1 or fig. 2, a magnetic separation sewage treatment system 102 is communicated with the first water tank 101,
a first liquid level meter 104 is arranged in the first water tank 101, the first liquid level meter 104 and the magnetic separation sewage treatment system 102 are respectively connected with the controller, the first liquid level meter 104 is used for collecting the liquid level height of the first water tank 101 and transmitting the liquid level height to the controller, in a practical application scene, when the liquid level height of the first water tank 101 is larger than or equal to the set liquid level height, the controller controls the magnetic separation sewage treatment system 102 to be started, and the magnetic separation sewage treatment system 102 is used for purifying and discharging rainwater of the first water tank 101; so as to achieve the purpose of automatically controlling the starting of the magnetic separation sewage treatment system 102 according to the liquid level height of the first water tank 101 without manual starting; in this embodiment, the magnetic separation sewage treatment system 102 may be a magnetic separation sewage treatment system 102 commonly used in the art.
In order to improve the safety, the device further comprises an alarm, the alarm is connected with the controller, and when the liquid level height of the first water pool 101 is larger than or equal to the set liquid level height, the controller controls the alarm to give an alarm sound with set duration; in one application scenario, when the magnetic separation wastewater treatment system 102 is activated under the control of the controller, the alarm may simultaneously emit an alarm sound under the control of the controller to prompt the operator that the magnetic separation wastewater treatment system 102 is about to be activated.
It will be appreciated that the alarm may be an audible and visual alarm as is common in the art.
As shown in fig. 1 or fig. 2, in order to control the amount of rainwater entering the first water tank 101, in a further embodiment, the rainwater storage system further comprises a water inlet valve 105, wherein the water inlet valve 105 is disposed between the first water tank 101 and a sewer network 106 and is connected to the controller, and the controller is used for controlling the opening degree and opening/closing of the water inlet valve 105; in an application scenario, in an early stage of raining, rainwater enters the sewer network 106, the controller controls the opening of the water inlet valve 105, rainwater in the sewer network 106 enters the first water tank 101 through the water inlet valve 105, and by arranging the water inlet valve 105, the controller can be utilized to reasonably control the opening of the water inlet valve 105 according to the liquid level condition in the first water tank 101, so that the amount of rainwater entering the first water tank 101 is controllable.
As shown in the figure, in order to reasonably control the water inlet valve 105, in a further scheme, the system further comprises a second liquid level meter 107 arranged in the sewage pipe network 106, the second liquid level meter 107 is connected with the controller, the second liquid level meter 107 is used for detecting the liquid level height of rainwater in the sewage pipe network 106 and transmitting the liquid level height to the controller, and in an application scenario, in the initial stage of rainwater, when the second liquid level meter 107 detects that rainwater exists in the sewage pipe network 106 or the liquid level height of the sewage pipe network 106 increases, the controller controls the water inlet valve 105 to be opened; in the operation process, the controller can reasonably control the water inlet valve 105 according to the data collected by the second liquid level meter 107, for example, control the opening/closing of the water inlet valve 105, control the opening degree of the water inlet valve 105, and the like, so that the process of rainwater entering the first water tank 101 from the sewage pipe network 106 can be controlled.
In order to control the amount of rainwater entering the magnetic separation sewage treatment system 102, in a further aspect, the system further comprises a water inlet adjusting valve 108, wherein the water inlet adjusting valve 108 is arranged between the first water tank 101 and the magnetic separation sewage treatment system 102 and connected with the controller, and the controller is used for controlling the opening degree of the water inlet adjusting valve 108 so as to control the amount of water entering the sewage treatment system 102. In practical application scenarios, the controller can reasonably control the opening of the inlet regulating valve 108 according to the liquid level condition in the first water tank 101, so as to achieve the purpose of regulating the amount of rainwater entering the magnetic separation sewage treatment system 102.
In order to sense the raining condition, the magnetic separation sewage treatment system 102 may perform pre-start, self-check, and the like, and therefore in a further aspect, the magnetic separation sewage treatment system further includes a rain gauge 109, and the rain gauge 109 is connected to the controller and is used for monitoring whether raining occurs. In an actual application scenario, in the initial stage of rainwater, the controller receives a rainwater signal monitored by the rain gauge 109, and controls the magnetic separation sewage treatment system 102 to perform pre-start early warning, self-check and other operations according to the signal, so that the system can be started quickly and normally when a subsequent start signal is received, and the initial stage rainwater can be effectively purified.
In order to make the effluent of the magnetic separation sewage treatment system 102 reach the standard, in a further scheme, a first turbidity meter 110, a bypass return valve 111 and an effluent valve 112 are respectively arranged, as shown in fig. 1 or fig. 2, the first turbidity meter 110 can be a turbidity meter commonly used in the prior art,
the magnetic separation sewage treatment system 102 is provided with a water outlet pipeline 117 and a return pipeline 118, one end of the return pipeline 118 is communicated with the water outlet pipeline 117, the other end of the return pipeline is communicated with the first water tank 101, the bypass return valve 111 is arranged on the return pipeline 118, the first turbidity meter 110 and the water outlet valve 112 are respectively arranged on the water outlet pipeline 117, and the water outlet valve 112 is located at the downstream of the return pipeline 118;
the first turbidity meter 110, the bypass return valve 111 and the water outlet valve 112 are respectively connected to the controller, as shown in the figure, in this embodiment, the first turbidity meter 110 is arranged to detect whether the effluent of the magnetic separation sewage treatment system 102 is up to standard, in an actual application scenario, at an initial stage of operation of the magnetic separation sewage treatment system 102, turbidity data detected by the first turbidity meter 110 is sent to the controller, when the turbidity data is lower than set up to standard data, the controller controls the water outlet valve 112 to close and controls the bypass return valve 111 to open, so that the effluent can completely flow back to the upstream first water tank 101, and discharge of the water which is not up to standard is prevented, when the turbidity data is greater than or equal to the set up to standard data, the controller controls the water outlet valve 112 to open and controls the bypass return valve 111 to close, so that the effluent can all be discharged out of the magnetic separation sewage treatment system 102 through the water outlet pipeline 117, achieving the purpose of reaching the discharge standard.
In order to automatically adjust parameters of the magnetic separation sewage treatment system 102 according to actual water quality and rainfall of rainwater, the system further comprises a second turbidity meter 113 and a first flow meter 114, as shown in fig. 1 or fig. 2, the second turbidity meter 113 and the first flow meter 114 are respectively arranged between the first water tank 101 and the magnetic separation sewage treatment system 102 and are respectively connected with the controller, the first flow meter 114 is used for measuring the rainfall entering the magnetic separation sewage treatment system 102 and sending the rainfall to the controller, the second turbidity meter 113 is used for detecting the turbidity of the rainwater entering the magnetic separation sewage treatment system 102 and sending the detected turbidity to the controller, and in an actual application scene, when the detected turbidity is smaller than the set turbidity, the controller controls the magnetic separation sewage treatment system 102 to be closed. In this embodiment, by providing the second turbidity meter 113 and the first flow meter 114, the turbidity of the rainwater entering the magnetic separation sewage treatment system 102 and the amount of the rainwater entering the magnetic separation sewage treatment system 102 can be respectively detected, so that the controller can accurately collect the amount of the rainwater entering the magnetic separation sewage treatment system 102 and the turbidity of the rainwater, and can reasonably control various parameters in the magnetic separation sewage treatment system 102 according to the amount of the rainwater and the turbidity, such as accurately calculating and controlling the addition amount of a coagulant, the addition amount of a coagulant aid, the addition amount of a magnetic seed, and the like, thereby being more beneficial to purifying the rainwater; and when the turbidity detected by the second turbidity meter 113 is smaller than the set turbidity, the middle and later period rainwater collected in the first water tank 101 is relatively clean, and the purification treatment is not needed, and at the moment, the controller automatically controls the magnetic separation sewage treatment system 102 to be closed.
As shown in fig. 1 or fig. 2, in order to facilitate concentrated drainage of the purified rainwater, in a further embodiment, the rainwater treatment system further includes a second water tank 103, a third liquid level meter 115, and a clean water lift pump 116, wherein the water outlet pipeline 117 is communicated with the second water tank 103, the third liquid level meter 115 is disposed in the second water tank 103 and connected to the controller, and the clean water lift pump 116 is disposed in the water discharge pipeline of the second water tank 103 and connected to the controller for outputting the rainwater in the second water tank 103. The third liquid level meter 115 may monitor the liquid level height in the second water tank 103 in real time and send the liquid level height to the controller, and the controller controls whether the clean water lift pump 116 is stopped or not according to the liquid level height, for example, in a scenario, when the liquid level height of the second water tank 103 reaches a set liquid level height, the controller may control the clean water lift pump 116 to start, so as to discharge or recycle rainwater in the second water tank 103.
In order to take over the sewage, in a further scheme, the first water tank 101 is further provided with an inlet and/or an outlet, the inlet is used for communicating with a sewage pipe network 106, and the magnetic separation sewage treatment system 102 is communicated with the first water tank 101 through the outlet.
In order to facilitate the connection, in a further embodiment, the first water tank 101 is further provided with an inlet and/or an outlet, the inlet is used for communicating with a sewage network 106, and the magnetic separation sewage treatment system 102 is communicated with the first water tank 101 through the outlet.
In a more sophisticated version, as shown by way of example in fig. 2, the magnetic separation wastewater treatment system 102 comprises a magnetic coagulation unit, a magnetic separation unit, and a magnetic recovery unit, wherein,
as shown in fig. 2, the magnetic coagulation unit includes a magnetic coagulation device 201, a coagulant adding device 204, and a coagulant aid adding device 206, the coagulant adding device 204 is communicated with the magnetic coagulation device 201 via a coagulant adding pump 205, the coagulant adding device 204 and the coagulant adding pump 205 are respectively communicated with the controller, the coagulant adding device 204 is used for storing and blending coagulants, and the coagulant adding pump 205 is used for delivering coagulants to the magnetic coagulation device 201 under the control of the controller;
as shown in fig. 2, the coagulant aid adding device 206 is communicated with the magnetic coagulation device 201 through a coagulant aid adding pump 207, the coagulant aid adding device 206 and the coagulant aid adding pump 207 are respectively communicated with the controller, the coagulant aid adding device 206 is used for storing and blending coagulant aids, and the coagulant aid adding pump 207 is used for delivering coagulant aids to the magnetic coagulation device 201 under the control of the controller;
in this embodiment, the coagulant adding pump 205 and/or the coagulant aid adding pump 207 may preferably adopt a digital metering pump, and the digital metering pump is usually provided with a built-in frequency converter, and can realize accurate metering and accurate adding according to a control signal of a controller.
The magnetic coagulation device 201, the coagulant adding device 204 and the coagulant aid adding device 206 can be respectively existing equipment, and the magnetic coagulation device 201 is mainly used for providing places for mixing of rainwater to be treated, magnetic seeds, a coagulant and a coagulant aid;
as shown in fig. 2, the magnetic separation unit includes a magnetic separator 202 for separating magnetic floccules, the magnetic separator 202 may adopt a magnetic separator 202 commonly used in the prior art, so as to separate the magnetic floccules in the rainwater by using the principle of magnetic adsorption, thereby achieving the purpose of purifying the rainwater;
as shown in fig. 2, the magnetic recovery unit includes a magnetic recovery device 203 for recovering magnetic seeds, and the magnetic recovery device 203 may be a magnetic recovery device 203 commonly used in the prior art, such as a drum recovery device, and is mainly used for separating magnetic seeds from separated sludge for recycling; the magnetic coagulation device 201 is communicated with the first water tank 101 and the magnetic separator 202 through a water inlet pipeline respectively, and the water inlet regulating valve 108, the second turbidity meter 113 and the first flowmeter 114 are arranged on the water inlet pipeline respectively;
the water outlet of the magnetic separator 202 is communicated with the second water tank 103 through the water outlet pipeline 117, the first turbidity meter 110 and the water outlet valve 112 are respectively arranged on the water outlet pipeline 117, the sludge outlet of the magnetic separator 202 is communicated with the magnetic recovery device 203 through a pipeline, and the magnetic recovery device 203 is communicated with the magnetic coagulation device 201 through a pipeline; rainwater to be treated firstly enters the magnetic coagulation device 201 through the first water tank 101 for quenching and tempering, then enters the magnetic separator 202, the purified rainwater is discharged through the water outlet pipeline 117, and separated sludge and the like enter the magnetic recovery device 203 through a pipeline and are continuously separated in the magnetic recovery device 203, so that the separated magnetic seeds can be conveyed to the magnetic coagulation device 201 again, and the rest sludge can be discharged separately for post-treatment of the sludge;
in order to realize the automatic control of the adding amount of the coagulant and the coagulant aid, the system further comprises a detecting component 208, wherein the detecting component 208 is arranged on the magnetic coagulation device or between the magnetic coagulation device and the magnetic separator and connected with the controller for detecting the content of suspended matters in the sewage, the controller controls the coagulant adding pump and the coagulant aid adding pump according to the content, in addition, when the controller judges and controls the adding amount of the coagulant and the coagulant aid, the controller can also be combined with the data collected by the first flowmeter 114 and the second turbidity meter 113 so as to obtain the water inlet amount (data obtained from the first flowmeter 114), the content of the suspended matters in the inlet water (data obtained from the second turbidity meter 113) and the content of the suspended matters in the outlet water (obtained from the detecting component 208), and the desired suspended matter content data, so that the adding amount of the coagulant, the adding amount of the coagulant aid, the adding amount of the magnetic seeds and the like can be obtained through calculation; therefore, the purpose of feedback regulation is achieved, and in the actual operation process, the controller of the system can automatically and reasonably regulate the delivery amounts of the coagulant feeding pump and the coagulant aid feeding pump according to the actual condition of sewage, thereby effectively solving the problem of automatic control of the feeding amounts of the coagulant and the coagulant aid.
Preferably, in this embodiment, the detecting unit 208 may preferably adopt an online SS meter, a sludge concentration meter, or the like, so as to automatically and accurately detect the content of suspended matters in the sewage.
In the present embodiment, it is preferred that,
the controller can also adjust the opening degree of the water inlet valve 105 according to the data collected by the second liquid level meter 107, and can control whether to close the magnetic separation sewage treatment system 102 according to the turbidity data detected by the second turbidity meter 113, in an actual application scene, when the turbidity detected by the second turbidity meter 113 is smaller than the set turbidity, the rainwater is indicated to be clean (rainwater in middle and later periods), the rainwater can be directly discharged along the sewage pipe network 106, and purification treatment is not needed, at the moment, the controller can automatically close the magnetic separation sewage treatment system 102, and in the initial period, in the process that the magnetic separation sewage treatment system 102 is automatically started, the controller can control all the components in the magnetic separation sewage treatment system 102 to be started in sequence, so that the purpose of automatic control is achieved.
Preferably, in this embodiment, the controller may preferably adopt a single chip, a PLC chip, an ARM chip, or the like.
It can be understood that, in this embodiment, the magnetic separation sewage treatment system 102 may be disposed in a buried or semi-buried manner, and the regulated rainwater may automatically flow into the magnetic separation sewage treatment system 102 under the action of its own gravity, without a lift pump, so as to save energy consumption, and meanwhile, the roof surface may be made into a greening facility to integrate with the surrounding environment.
Example 2
The main difference between this embodiment 2 and the above embodiment 1 is that the automatic magnetic separation control system for treating initial rainwater provided in this embodiment further includes a third water tank 301 for storing sludge and a sludge dewatering unit, as shown in fig. 3,
the sludge discharge port of the magnetic recovery device 203 is communicated with the third water tank 301 through a pipeline, the first water tank 101 is communicated with the third water tank 301 through a sludge pipeline 302, the sludge pipeline 302 is provided with a first sludge pump 303, the third water tank 301 is internally provided with a fourth liquid level meter 304, the fourth liquid level meter 304 is used for detecting the liquid level height of the third water tank 301,
the sludge dewatering unit comprises a sludge dewatering machine 305 and a coagulant aid adding device 206, the coagulant aid adding device 206 is communicated with the sludge dewatering machine 305 through a coagulant aid adding pump 207, as shown in fig. 3, the coagulant aid adding device 206 is used for storing and mixing coagulant aids so as to assist sludge dewatering;
the third water tank 301 is communicated with the sludge dewatering machine 305 through a sludge discharge pipeline 306, the sludge discharge pipeline 306 is respectively provided with a second sludge pump 307 and a second flow meter 308, the second flow meter 308 is used for metering the amount of the sludge conveyed into the sludge dewatering machine 305, so that the controller can control the adding amount of the coagulant aid according to the amount of the sludge, the sludge dewatering machine 305 can adopt the sludge dewatering machine 305 commonly used in the prior art, the dewatered sludge is more conveniently transported outside,
the fourth liquid level meter 304, the first sludge pump 303, the second sludge pump 307, the second flow meter 308, the sludge dewatering machine 305, the coagulant aid adding device 206 and the coagulant aid adding pump 207 are respectively connected with the controller.
In a further scheme, the system also comprises a flushing pump, wherein the flushing pump is connected with the controller and communicated with the first water tank and is used for stirring the sewage in the first water tank under the control of the controller; the controller controls the flushing pump to be started or not, and when the concentration detected by the second turbidity meter is lower than the set concentration, the controller controls the flushing pump to be started. Specifically, in an application scenario, when the second turbidity meter detects that the concentration of the sewage entering the magnetic coagulation device is lower than a set concentration, namely the concentration of the inlet water is lower and does not reach the standard, the controller controls the flushing pump to be started so as to flush the accumulated silt at the bottom of the first water tank, so that the accumulated silt is mixed with the water body in the first water tank, the concentration of pollutants in the sewage is improved, and the concentration of the sewage entering the magnetic coagulation device can be basically kept consistent; when the second turbidity meter detects that the concentration of the sewage entering the magnetic coagulation device is equal to or greater than the set concentration, the flushing pump is closed or in a closed state.
In another application scenario, when the water inlet valve 105 is in a closed state and the liquid level in the first water tank 101 is lower than the set minimum liquid level, it indicates that the rainwater or rain in the middle and later periods has stopped, and it indicates that the system does not need to be reused to continuously purify the rainwater, at this time, the controller controls the flushing pump and the first sludge pump 303 to be started so as to flush the sludge at the bottom of the first water tank 101 by using the flushing pump; while the flushed sludge may be directed into the third basin 301 via a sludge conduit 302.
It will be appreciated that in this embodiment, the flush pump may be in communication with the second sump 103 to obtain the water required for flushing from the second sump 103.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. An automatic magnetic separation control system for treating initial rainwater, which is characterized by comprising a first water tank, a magnetic separation sewage treatment system and a controller, wherein,
the first water tank is used for communicating a sewage pipe network and storing rainwater, the magnetic separation sewage treatment system is communicated with the first water tank,
the device comprises a controller, a first water tank, a magnetic separation sewage treatment system, a first liquid level meter, a first controller and a second controller, wherein the first water tank is internally provided with the first liquid level meter, the first liquid level meter and the magnetic separation sewage treatment system are respectively connected with the controller, the first liquid level meter is used for collecting the liquid level height of the first water tank and transmitting the liquid level height to the controller, when the liquid level height of the first water tank is larger than or equal to the set liquid level height, the controller controls the magnetic separation sewage treatment system to be started, and the magnetic separation sewage treatment.
2. The automatic magnetic separation control system for treating initial rainwater according to claim 1, further comprising a water inlet valve, wherein the water inlet valve is arranged between the first water tank and a sewage pipe network and is connected with the controller, and the controller is used for controlling the opening degree of the water inlet valve;
and/or the presence of a gas in the gas,
the device also comprises a second liquid level meter arranged in the sewage pipe network, the second liquid level meter is connected with the controller, and the second liquid level meter is used for detecting the liquid level height of rainwater in the sewage pipe network and transmitting the liquid level height to the controller;
and/or the presence of a gas in the gas,
the rain gauge is connected with the controller and used for monitoring whether rain falls or not.
3. The automatic magnetic separation control system for treating initial rainwater according to claim 1, further comprising a water inlet regulating valve, wherein the water inlet regulating valve is arranged between the first water tank and the magnetic separation sewage treatment system and connected with the controller, and the controller is used for controlling the opening degree of the water inlet regulating valve.
4. An automatic magnetic separation control system for treating incipient rainwater according to any one of claims 1 to 3, further comprising a first turbidity meter, a bypass return valve, and a water outlet valve, wherein,
the magnetic separation sewage treatment system is provided with a water outlet pipeline and a return pipeline, one end of the return pipeline is communicated with the water outlet pipeline, the other end of the return pipeline is communicated with the first water tank, the bypass return valve is arranged on the return pipeline, the first turbidity meter and the water outlet valve are respectively arranged on the water outlet pipeline, and the water outlet valve is positioned at the downstream of the return pipeline;
the first turbidity meter, the bypass return valve and the water outlet valve are respectively connected with the controller.
5. The automatic magnetic separation control system for treating initial rainwater according to any one of claims 1 to 3, further comprising a second turbidity meter and a first flow meter, wherein the second turbidity meter and the first flow meter are respectively arranged between the first water tank and the magnetic separation sewage treatment system and are respectively connected with the controller, the first flow meter is used for metering the amount of rainwater entering the magnetic separation sewage treatment system, and the second turbidity meter is used for detecting the turbidity of rainwater entering the magnetic separation sewage treatment system.
6. The automatic magnetic separation control system for treating initial rainwater according to claim 4, further comprising a second water tank, a third level gauge and a clean water lift pump, wherein the water outlet pipeline is communicated with the second water tank, the third level gauge is arranged in the second water tank and connected with the controller, and the clean water lift pump is arranged in the water discharge pipeline of the second water tank and connected with the controller for outputting rainwater in the second water tank.
7. The automatic magnetic separation control system for treating incipient rainwater according to claim 6, wherein the magnetic separation sewage treatment system comprises a magnetic coagulation unit, a magnetic separation unit and a magnetic recovery unit, wherein,
the magnetic coagulation unit comprises a magnetic coagulation device, a coagulant adding device and a coagulant aid adding device, the coagulant adding device is communicated with the magnetic coagulation device through a coagulant adding pump, the coagulant adding device and the coagulant adding pump are respectively communicated with the controller, the coagulant adding device is used for storing and blending coagulants, and the coagulant adding pump is used for conveying coagulants to the magnetic coagulation device under the control of the controller;
the coagulant aid adding device is communicated with the magnetic coagulation device through a coagulant aid adding pump, the coagulant aid adding device and the coagulant aid adding pump are respectively communicated with the controller, the coagulant aid adding device is used for storing and blending coagulant aids, and the coagulant aid adding pump is used for conveying the coagulant aids to the magnetic coagulation device under the control of the controller;
the magnetic coagulation device is used for providing a place for mixing rainwater to be treated, magnetic seeds, a coagulant and a coagulant aid;
the magnetic separation unit is including the magnetic separation machine that is used for separating magnetic wadding group, the magnetic recovery unit is including the magnetic recovery device who is used for retrieving the magnetism kind, magnetism coagulate the device respectively with first pond reaches the magnetic separation machine is linked together, the delivery port of magnetic separation machine passes through outlet conduit with the second pond is linked together, the mud outlet of magnetic separation machine pass through the pipeline with the magnetic recovery device is linked together, and the magnetic recovery device passes through the pipeline and is linked together with the magnetic separation device.
8. The automatic magnetic separation control system for treating initial rainwater according to claim 7, further comprising a third water tank for storing sludge and a sludge dewatering unit, wherein the sludge discharge port of the magnetic recovery device is communicated with the third water tank through a pipeline, the first water tank is communicated with the third water tank through a sludge pipeline, the sludge pipeline is provided with a first sludge pump, and the third water tank is internally provided with a fourth liquid level meter,
the sludge dewatering unit comprises a sludge dewatering machine and a coagulant aid adding device, the coagulant aid adding device is communicated with the sludge dewatering machine through a coagulant aid adding pump, the coagulant aid adding device is used for storing and mixing coagulant aids,
the third water tank is communicated with the sludge dewatering machine through a sludge discharge pipeline which is respectively provided with a second sludge pump and a second flowmeter,
and the fourth liquid level meter, the first sludge pump, the second flowmeter, the sludge dewatering machine, the coagulant aid adding device and the coagulant aid adding pump are respectively connected with the controller.
9. An automatic magnetic separation control system for treating initial rainwater according to claim 2 or 3, further comprising a washing pump for washing the bottom of the first water tank, the washing pump being connected to the controller,
when the water inlet valve is in a closed state and the liquid level height in the first water tank is lower than the set lowest liquid level height, the flushing pump and the first sludge pump are respectively started under the control of the controller.
10. The automatic magnetic separation control system for treating initial rainwater according to any one of claims 1 to 3, wherein the controller is a single chip microcomputer, a PLC or an ARM chip.
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