A rainwater quality monitoring and utilization system

Abstract

This invention provides a rainwater quality monitoring and utilization system. A first water quality detector detects rainwater collected by a first collection device and obtains first water quality information. A second water quality detector detects rainwater collected by a second collection device and obtains second water quality information. A control module controls a corresponding solenoid valve based on the first or second water quality information to divert rainwater from the rainwater pipe. A purification tank is connected to a first, second, and third rainwater treatment module via rainwater pipes. The first rainwater treatment module performs deep purification on the water in the purification tank and inputs it into the domestic water network. The second rainwater treatment module performs moderate purification on the water in the purification tank and inputs it into a greywater tank. The third rainwater treatment module performs light treatment on the water in the purification tank and inputs it into a sewage tank. This invention improves the utilization rate of rainwater resources.

Description

Technical Field

[0001] This invention relates to the field of water quality monitoring and utilization technology, and in particular to a rainwater quality monitoring and utilization system. Background Technology

[0002] With the increasing frequency of extreme rainstorms due to global climate change and the proliferation of non-permeable pavements during urbanization, large amounts of rainwater cannot be drained in time, causing urban flooding and hindering the normal lives of urban residents and local economic development. Rainwater reuse technology is a crucial component of the currently advocated "sponge city" construction initiative. On the other hand, the problem of water scarcity is becoming increasingly prominent, especially in arid regions of Northwest China, where many areas face water shortages.

[0003] Current rainwater harvesting and purification systems are complex and costly. Some rainwater harvesting and purification devices employ traditional water treatment processes such as filtration, coagulation, sedimentation, and disinfection. Because the quality and quantity of rainwater runoff vary significantly with rainfall, using uniform treatment processes and parameters results in low treatment efficiency. Furthermore, decentralized rainwater treatment greatly increases costs.

[0004] In addition, existing technologies also provide roof rainwater harvesting and treatment systems, but they do not perform multi-stage treatment of rainwater and cannot efficiently utilize rainwater resources. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a rainwater quality monitoring and utilization system.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] A rainwater quality monitoring and utilization system includes: a first collection device, a second collection device, a first water quality analyzer, a second water quality analyzer, a control module, a first rainwater treatment module, a second rainwater treatment module, a third rainwater treatment module, and multiple solenoid valves;

[0008] The first collection device and the second collection device are respectively installed on the roof steel plate and the road surface to be collected; the first collection device is connected to a greywater tank, a clean water tank and a sewage tank respectively through rainwater pipes; the second collection device is connected to the greywater tank and the sewage tank respectively through rainwater pipes; the solenoid valve is installed on the corresponding rainwater pipe; the first water quality detector is installed at the first collection device, and the first water quality detector is used to detect the rainwater collected by the first collection device and obtain first water quality information; the second water quality detector is used to detect the rainwater collected by the second collection device and obtain second water quality information; the control module is connected to the first water quality detector and the second water quality detector respectively, and the control module is used to control the corresponding solenoid valve to work according to the first water quality information or the second water quality information, so as to realize the diversion of rainwater in the rainwater pipe;

[0009] The water purification tank is also connected to the first rainwater treatment module, the second rainwater treatment module, and the third rainwater treatment module via rainwater pipes. The first rainwater treatment module is connected to the municipal water supply network and is used to deeply purify the water in the water purification tank before feeding it into the water supply network. The second rainwater treatment module is connected to a greywater tank and is used to moderately purify the water in the water purification tank before feeding it into the greywater tank. The third rainwater treatment module is connected to a sewage tank and is used to lightly treat the water in the water purification tank before feeding it into the sewage tank.

[0010] Preferably, the first collecting device is at a preset angle to the plane of the roof steel plate; the second collecting device is at a preset angle to the road surface.

[0011] Preferably, the water quality monitoring instrument is a turbidity meter, pH meter, or conductivity meter that uses a probe to quickly monitor water quality.

[0012] Preferably, the control unit is an Arduino microcontroller, and the control method is implemented by programming the Arduino microcontroller.

[0013] Preferably, it also includes a solar cell;

[0014] The solar cells are connected to the first water quality analyzer, the second water quality analyzer, the control module, the first rainwater treatment module, the second rainwater treatment module, the third rainwater treatment module, and the solenoid valve, respectively.

[0015] Preferably, the control unit has a built-in water quality monitoring model based on a BP neural network; the water quality monitoring model is used to monitor water quality based on water quality information and obtain water quality assessment results; the control unit is also used to control the working state of the solenoid valve based on the water quality assessment results.

[0016] Preferably, the control module includes a first control probe and a second control probe;

[0017] The first control probe is installed at the first collection device, and the first control probe is used to control the solenoid valve at the first collection device to achieve the diversion of rainwater;

[0018] The second control probe is located at the second collection device and is used to control the solenoid valve at the second collection device to divert rainwater.

[0019] Preferably, it further includes:

[0020] The control unit is connected to the first water quality detector and the second water quality detector respectively through the signal processing module. The signal processing module is used to preprocess the signals detected by the first water quality detector and the second water quality detector to obtain the preprocessed first water quality information and the second water quality information.

[0021] Preferably, the signal processing module includes:

[0022] The signal acquisition unit is used to acquire the original first water quality information and the second water quality information;

[0023] The denoising unit is used to perform wavelet transform denoising on the first water quality information and the second water quality information to obtain the denoised water quality acquisition signal.

[0024] The encoding unit is used to encode the denoised water quality acquisition signal to obtain the frequency space of the water quality acquisition signal;

[0025] The reconstruction model building unit is used to construct a water quality monitoring information reconstruction model based on the frequency space.

[0026] The information reconstruction unit is used to iteratively solve the water quality monitoring information reconstruction model to obtain the preprocessed first water quality information and second water quality information.

[0027] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0028] This invention provides a rainwater quality monitoring and utilization system, comprising: a first collection device, a second collection device, a first water quality detector, a second water quality detector, a control module, a first rainwater treatment module, a second rainwater treatment module, a third rainwater treatment module, and multiple solenoid valves; the first collection device and the second collection device are respectively installed on the roof steel plate to be collected and the road surface to be collected; the first collection device is connected to a greywater tank, a clean water tank, and a sewage tank respectively via rainwater pipes; the second collection device is connected to the greywater tank and the sewage tank via rainwater pipes; the solenoid valves are installed on the corresponding rainwater pipes; the first water quality detector is installed at the first collection device, and the first water quality detector is used to detect the rainwater collected by the first collection device and obtain first water quality information; the second water quality detector is used to detect the rainwater collected by the second collection device and obtain second water quality information; the... The control module is connected to the first and second water quality detectors respectively. The control module controls the corresponding solenoid valves to operate based on the first or second water quality information to divert rainwater from the rainwater pipes. The purification tank is also connected to the first, second, and third rainwater treatment modules via rainwater pipes. The first rainwater treatment module is connected to the municipal water supply network and performs deep purification on the water in the purification tank before feeding it into the network. The second rainwater treatment module is connected to a greywater tank and performs moderate purification on the water in the purification tank before feeding it into the greywater tank. The third rainwater treatment module is connected to a sewage tank and performs light treatment on the water in the purification tank before feeding it into the sewage tank. This invention can acquire water quality information from rooftops and roads and perform multi-stage treatment of collected rainwater based on this information, thereby improving the utilization rate of rainwater resources. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the system structure provided in an embodiment of the present invention;

[0031] Figure 2 This is a partial structural diagram provided for an embodiment of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The purpose of this invention is to provide a rainwater quality monitoring and utilization system that can acquire water quality information from rooftops and roads, and perform multi-stage treatment of the collected rainwater based on this information, thereby improving the utilization rate of rainwater resources.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 This is a schematic diagram of the system structure provided in an embodiment of the present invention, such as... Figure 1 As shown, this invention provides a rainwater quality monitoring and utilization system, including: a first collection device, a second collection device, a first water quality detector, a second water quality detector, a control module, a first rainwater treatment module, a second rainwater treatment module, a third rainwater treatment module, and multiple solenoid valves; the first collection device and the second collection device are respectively installed on the roof steel plate to be collected and the road surface to be collected; the first collection device is connected to a greywater tank, a clean water tank, and a sewage tank respectively through rainwater pipes; the second collection device is connected to the greywater tank and the sewage tank through rainwater pipes; the solenoid valves are installed on the corresponding rainwater pipes; the first water quality detector is installed at the first collection device, and the first water quality detector is used to detect the rainwater collected by the first collection device and obtain first water quality information; the second water quality detector is used to detect the rainwater collected by the second collection device and obtain second water quality information; The control module is connected to the first water quality detector and the second water quality detector respectively. The control module is used to control the corresponding solenoid valve to work according to the first water quality information or the second water quality information, so as to realize the diversion of rainwater in the rainwater pipe. The water purification tank is also connected to the first rainwater treatment module, the second rainwater treatment module and the third rainwater treatment module through the rainwater pipe. The first rainwater treatment module is connected to the municipal water supply network. The first rainwater treatment module is used to deeply purify the water in the water purification tank and input it into the water supply network. The second rainwater treatment module is connected to the greywater tank. The second rainwater treatment module is used to moderately purify the water in the water purification tank and input it into the greywater tank. The third rainwater treatment module is connected to the sewage tank. The third rainwater treatment module is used to lightly treat the water in the water purification tank and input it into the sewage tank.

[0036] Specifically, in this embodiment, rainwater on the roof steel plate and road surface is first rapidly detected, thus achieving preliminary detection of rainwater. Secondly, this embodiment performs secondary detection and treatment in a water purification tank, thereby enabling the diverted rainwater to be more accurately input into the corresponding water networks.

[0037] Preferably, the first collecting device is at a preset angle to the plane of the roof steel plate; the second collecting device is at a preset angle to the road surface.

[0038] Specifically, in this embodiment, a preset angle is provided so that the first and second collecting devices can quickly collect rainwater.

[0039] Preferably, the water quality monitoring instrument is a turbidity meter, pH meter, or conductivity meter that uses a probe to quickly monitor water quality.

[0040] Preferably, it also includes a solar cell;

[0041] The solar cells are connected to the first water quality analyzer, the second water quality analyzer, the control module, the first rainwater treatment module, the second rainwater treatment module, the third rainwater treatment module, and the solenoid valve, respectively.

[0042] Preferably, the control unit has a built-in water quality monitoring model based on a BP neural network; the water quality monitoring model is used to monitor water quality based on water quality information and obtain water quality assessment results; the control unit is also used to control the working state of the solenoid valve based on the water quality assessment results.

[0043] Furthermore, the method for constructing the water quality monitoring model in this embodiment includes:

[0044] Collect water quality sample data;

[0045] Feature labeling is performed on water quality sample data to obtain labeled sample data;

[0046] The labeled sample data is input into the BP neural network model for network model training, resulting in a trained water quality monitoring model.

[0047] Furthermore, in this embodiment, feature labeling is performed on the water quality sample data, specifically including:

[0048] Feature extraction is performed on water quality sample data to obtain water quality feature information; wherein, the feature information includes water color and floating matter density;

[0049] The feature information is used as a labeling element to label the water quality sample data, resulting in labeled sample data.

[0050] Specifically, such as Figure 2 As shown, the control module includes a first control probe and a second control probe;

[0051] The first control probe is installed at the first collection device, and the first control probe is used to control the solenoid valve at the first collection device to achieve the diversion of rainwater;

[0052] The second control probe is located at the second collection device and is used to control the solenoid valve at the second collection device to divert rainwater.

[0053] Furthermore, in this embodiment, each rainwater channel is connected to a corresponding rainwater pipe, thereby enabling convenient diversion of the detected rainwater.

[0054] Preferably, it further includes:

[0055] The control unit is connected to the first water quality detector and the second water quality detector respectively through the signal processing module. The signal processing module is used to preprocess the signals detected by the first water quality detector and the second water quality detector to obtain the preprocessed first water quality information and the second water quality information.

[0056] Preferably, the signal processing module includes:

[0057] The signal acquisition unit is used to acquire the original first water quality information and the second water quality information;

[0058] The denoising unit is used to perform wavelet transform denoising on the first water quality information and the second water quality information to obtain the denoised water quality acquisition signal.

[0059] The encoding unit is used to encode the denoised water quality acquisition signal to obtain the frequency space of the water quality acquisition signal;

[0060] The reconstruction model building unit is used to construct a water quality monitoring information reconstruction model based on the frequency space.

[0061] The information reconstruction unit is used to iteratively solve the water quality monitoring information reconstruction model to obtain the preprocessed first water quality information and second water quality information.

[0062] Specifically, wavelet transform denoising is a common denoising technique. By decomposing the original water quality monitoring signal, wavelet coefficients of varying sizes can be generated. Then, a filtering threshold is set, and among the numerous wavelet coefficients, coefficients with smaller absolute values ​​are set to zero, while coefficients with larger absolute values ​​are retained or reduced. The threshold-processed wavelet coefficients are then reconstructed to achieve denoising. The basic idea of ​​this embodiment is that the wavelet coefficients corresponding to water quality monitoring signals are generally large, while the wavelet coefficients corresponding to noise are generally small. Therefore, based on this characteristic, denoising processing can be performed on water quality monitoring signals to improve the accuracy of water quality monitoring.

[0063] Furthermore, in this embodiment, a water quality monitoring information reconstruction model is first constructed based on the frequency space. Then, the augmented Lagrange multiplier method is used to introduce reconstruction variables to decompose the reconstruction problem into several easily solvable subproblems, so that each subproblem can obtain a simple analytical solution. This effectively improves the computational efficiency of reconstruction, greatly saves the information processing time of water quality monitoring, and improves the efficiency of water quality monitoring.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0065] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A rainwater quality monitoring and utilization system, characterized in that, include: The system comprises a first collection device, a second collection device, a first water quality analyzer, a second water quality analyzer, a control module, a first rainwater treatment module, a second rainwater treatment module, a third rainwater treatment module, and multiple solenoid valves. The first collection device and the second collection device are respectively installed on the roof steel plate to be collected and the road surface to be collected; the first collection device is connected to the greywater tank, the clean water tank and the sewage tank respectively through rainwater pipes; the second collection device is connected to the greywater tank and the sewage tank through rainwater pipes; the solenoid valve is installed on the corresponding rainwater pipe; the first water quality detector is installed at the first collection device, and the first water quality detector is used to detect the rainwater collected by the first collection device and obtain the first water quality information; The second water quality detector is used to detect the rainwater collected by the second collection device and obtain second water quality information; the control module is connected to the first water quality detector and the second water quality detector respectively, and the control module is used to control the corresponding solenoid valve to work according to the first water quality information or the second water quality information, so as to realize the diversion of rainwater in the rainwater pipe; The water purification tank is also connected to the first rainwater treatment module, the second rainwater treatment module, and the third rainwater treatment module via rainwater pipes. The first rainwater treatment module is connected to the municipal water supply network and is used to deeply purify the water in the water purification tank before feeding it into the network. The second rainwater treatment module is connected to a greywater tank and is used to moderately purify the water in the water purification tank before feeding it into the greywater tank. The third rainwater treatment module is connected to a sewage tank and is used to lightly treat the water in the water purification tank before feeding it into the sewage tank. The control module includes a first control probe and a second control probe; The first control probe is installed at the first collection device, and the first control probe is used to control the solenoid valve at the first collection device to achieve the diversion of rainwater; The second control probe is located at the second collection device and is used to control the solenoid valve at the second collection device to divert rainwater.

2. The rainwater quality monitoring and utilization system according to claim 1, characterized in that, The first collecting device is at a preset angle to the plane of the roof steel plate; the second collecting device is at a preset angle to the road surface.

3. The rainwater quality monitoring and utilization system according to claim 1, characterized in that, The water quality testing instrument is a turbidity meter, pH meter, or conductivity meter that uses a probe to quickly monitor water quality.

4. The rainwater quality monitoring and utilization system according to claim 1, characterized in that, The control module is an Arduino microcontroller, and the control method is implemented by programming the Arduino microcontroller.

5. The rainwater quality monitoring and utilization system according to claim 1, characterized in that, It also includes solar cells; The solar cells are connected to the first water quality analyzer, the second water quality analyzer, the control module, the first rainwater treatment module, the second rainwater treatment module, the third rainwater treatment module, and the solenoid valve, respectively.

6. The rainwater quality monitoring and utilization system according to claim 1, characterized in that, The control module has a built-in water quality monitoring model based on a BP neural network; the water quality monitoring model is used to monitor water quality based on water quality information and obtain water quality assessment results; the control module is also used to control the working state of the solenoid valve based on the water quality assessment results.

7. The rainwater quality monitoring and utilization system according to claim 1, characterized in that, Also includes: The control module is connected to the first water quality detector and the second water quality detector respectively through the signal processing module. The signal processing module is used to preprocess the signals detected by the first water quality detector and the second water quality detector to obtain the preprocessed first water quality information and the second water quality information.

8. The rainwater quality monitoring and utilization system according to claim 7, characterized in that, The signal processing module includes: The signal acquisition unit is used to acquire the original first water quality information and the second water quality information; The denoising unit is used to perform wavelet transform denoising on the first water quality information and the second water quality information to obtain the denoised water quality acquisition signal. The encoding unit is used to encode the denoised water quality acquisition signal to obtain the frequency space of the water quality acquisition signal; The reconstruction model building unit is used to construct a water quality monitoring information reconstruction model based on the frequency space. The information reconstruction unit is used to iteratively solve the water quality monitoring information reconstruction model to obtain the preprocessed first water quality information and second water quality information.

Images