Rainwater purification system based on scum pretreatment

Abstract

This invention relates to the field of rainwater purification, addressing the problem of incomplete scum removal in rainwater treatment, which leads to compromised treatment effectiveness. Specifically, it is a rainwater purification system based on scum pretreatment, comprising a scum filtration unit, a rainwater purification unit, a purification monitoring unit, a purification statistics unit, and a scum treatment unit. When purifying rainwater, this invention uses a multi-stage filtration device with single-mesh circulation to filter scum in the rainwater in stages, removing scum of varying sizes progressively. Simultaneously, by adjusting the number of single-mesh circulation cycles, the filtration effect of rainwater scum is further optimized. Multiple purification parameters are individually controlled during the rainwater purification process to ensure the operational effectiveness of the rainwater purification device. Furthermore, the correlation between the operational effects of multiple rainwater purification devices is analyzed, and the results are used to manage and control different devices in the rainwater purification process.

Description

Technical Field

[0001] This invention relates to the field of rainwater purification, specifically a rainwater purification system based on scum pretreatment. Background Technology

[0002] Rainwater treatment is one of many water treatment methods. Rainwater contains a lot of impurities, such as fallen leaves, branches, and mud. Rainwater utilization follows the principle of resource recycling. After being collected, the floating leaves and scum in rainwater can be used as agricultural fertilizer or feed, which has very good utilization value. Therefore, the floating leaves and scum in rainwater can be further processed to improve the treatment efficiency and enable them to play a better role. However, if impurities remain in the rainwater, they will adversely affect the subsequent rainwater purification steps. Therefore, it is necessary to filter the impurities before rainwater treatment to ensure the treatment effect.

[0003] Currently, existing methods for removing rainwater scum generally involve dredging and filtering. While this can reduce the amount of scum in rainwater to some extent, some residue still remains, resulting in insufficient scum removal and affecting the overall rainwater treatment effect.

[0004] To address the aforementioned technical problems, this application proposes a solution. Summary of the Invention

[0005] This invention purifies rainwater by using a multi-stage filtration device with a single-mesh circulation method to filter scum in the rainwater in stages. This allows scum of different sizes in the rainwater to be removed step by step. At the same time, by collecting samples in the subsequent rainwater purification process, the number of single-mesh circulations can be adjusted, thereby further optimizing the filtration effect of rainwater scum. This solves the problem of incomplete scum removal in rainwater treatment, which leads to an inability to guarantee the rainwater treatment effect. Therefore, this invention proposes a rainwater purification system based on scum pretreatment.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A rainwater purification system based on scum pretreatment includes a scum filtration unit, a rainwater purification unit, a purification monitoring unit, a purification statistics unit, and a scum treatment unit.

[0008] The scum filtration unit collects scum from the rainwater and sends the collected scum to the scum treatment unit, which uses a scum pretreatment device to squeeze and drain the scum.

[0009] During the scum extrusion and dewatering process, the scum treatment unit acquires the amount of scum drained and adjusts the extrusion force based on the amount of scum drained.

[0010] After the scum filtration unit finishes scavenging the scum in the water, it sends a scavenging completion signal to the rainwater purification unit. Upon receiving the scavenging completion signal, the rainwater purification unit immediately begins purifying the rainwater.

[0011] During the rainwater purification process, the purification monitoring unit continuously monitors and collects rainwater purification data, analyzes the data to obtain purification effect indicators, and sends these indicators to the purification statistics unit.

[0012] The purification statistics unit performs correlation analysis on purification effect indicators and generates a rainwater purification report based on the correlation analysis results.

[0013] In a preferred embodiment of the present invention, the scum filtration unit removes scum from rainwater by circulating the rainwater through multiple sets of fixed filter screens in a single-mesh manner. The multiple sets of fixed filter screens are divided into different mesh sizes.

[0014] The method for single-mesh circulation of the scum filtration unit is as follows: after circulating the rainwater through the current mesh number of the filter screen a set number of times, the rainwater is then circulated through each group of filter screens with subsequent mesh numbers.

[0015] In a preferred embodiment of the present invention, after the scum treatment unit obtains the scum it has collected, the weight of the scum is collected, the weight of the scum collected before the squeezing and draining begins is recorded as the initial weight, and the weight of the scum collected continuously during the squeezing and draining process is recorded as the real-time weight.

[0016] When the scum treatment unit obtains the real-time weight, it simultaneously obtains the squeezing force during the squeezing and draining process, and calculates the difference between the squeezing force and the real-time weight to obtain the actual weight of the scum.

[0017] The scum treatment unit compares the initial weight with the actual weight of the scum to obtain the amount of water squeezed out.

[0018] In a preferred embodiment of the present invention, the scum treatment unit generates a drainage ratio by comparing the amount of water squeezed out and the initial weight.

[0019] The drainage ratio is compared with the set expected drainage range to generate a signal indicating insufficient drainage, normal drainage, or excessive drainage. After obtaining the signal indicating insufficient drainage, the scum treatment unit increases the squeezing force; after obtaining the signal indicating excessive drainage, it decreases the squeezing force.

[0020] In a preferred embodiment of the present invention, the rainwater purification unit controls each purification step individually when purifying rainwater, wherein the control range includes purification time, purification conditions and purification treatment volume.

[0021] The rainwater purification unit collects data on the actual range and compares it with the control range. If the overlap ratio between the actual range and the control range is greater than a set value, a normal control signal is generated; if the overlap ratio is less than a set value, an abnormal control signal is generated.

[0022] In a preferred embodiment of the present invention, the rainwater purification information collected by the purification monitoring unit includes impurity content and treatment ratio, wherein the impurity content is the amount of residual scum in the water body, the treatment ratio is the content reduction ratio corresponding to the rainwater purification operation step, and the number of treatment ratio items is the same as the number of purification operation steps.

[0023] In a preferred embodiment of the present invention, after obtaining the impurity content, the purification monitoring unit compares the impurity content with the actual weight of the scum to obtain the impurity ratio. The purification monitoring unit performs threshold analysis on the impurity ratio to generate a normal impurity signal or an impurity exceeding the standard signal.

[0024] After acquiring a signal indicating that impurities exceed the standard, the purification monitoring unit increases the number of cycles for the monocular camera.

[0025] In a preferred embodiment of the present invention, the method by which the purification monitoring unit obtains the treatment ratio is as follows:

[0026] The purification monitoring unit acquires the content ratio at the start of purification and records it as the initial ratio. It calculates the difference between the initial ratio and the currently acquired ratio to obtain the content decay ratio. The purification monitoring unit then calculates the ratio between the content decay ratio and the initial ratio to obtain the treatment ratio.

[0027] The purification monitoring unit performs threshold analysis on the treatment ratio and the set standard ratio, and generates a treatment compliance signal or a treatment abnormality signal based on the analysis results.

[0028] In a preferred embodiment of the present invention, the method by which the purification statistics unit performs correlation analysis on the treatment ratio is as follows:

[0029] The purification statistics unit obtains the processing ratio of each step and sorts the processing ratios of the steps according to the order of the steps to obtain the effect sequence.

[0030] The purification statistics unit compares the acquired effect sequences multiple times to obtain the change range of the treatment ratio at the same position. If at least two positions in the effect sequence have the same change range of the treatment ratio, then the treatment ratio at the same position is recorded as the associated position.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. In this invention, when purifying rainwater, a multi-stage filtration device is used to filter scum in the rainwater through a single-mesh circulation filtration method. This allows scum of different sizes in the rainwater to be removed step by step, ensuring that the scum in the rainwater is removed while avoiding the conflict between the fineness of the filter screen and its susceptibility to clogging in a single filtration device. At the same time, through secondary collection in the subsequent rainwater purification process, the number of single-mesh circulations can be adjusted, thereby further optimizing the filtration effect of rainwater scum.

[0033] 2. In this invention, multiple purification parameters are individually controlled during the rainwater purification process, thereby ensuring the operational effectiveness of the rainwater purification device. Based on the obtained operational effectiveness, the correlation between the operational effectiveness of multiple rainwater purification devices is analyzed. According to the correlation between the operational effectiveness of the rainwater purification devices, different devices in the rainwater purification process are managed and controlled. Among multiple devices with correlation, priority is given to ensuring that the operational effectiveness of the first device fully meets the standards, so as to avoid affecting subsequent treatment and improve the efficiency of rainwater purification effect maintenance.

[0034] 3. In this invention, the scum after being salvaged is squeezed and drained, thereby reducing the water content in the scum after salvage and improving the efficiency of subsequent drying and collection of the scum. Attached Figure Description

[0035] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0036] Figure 1 This is a system block diagram of the present invention;

[0037] Figure 2 This is a system flowchart of the present invention. Detailed Implementation

[0038] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0039] Example 1:

[0040] Please see Figure 1 - Figure 2 As shown, the rainwater purification system based on scum pretreatment includes a scum filtration unit, a rainwater purification unit, a purification monitoring unit, a purification statistics unit, and a scum treatment unit.

[0041] The scum filtration unit filters the collected rainwater. During the filtration process, the scum filtration unit uses a single-mesh circulation method to filter the rainwater. The single-mesh circulation process is as follows:

[0042] A multi-stage rainwater filtration system is set up, with the mesh size of the filter screens in each rainwater filtration system gradually increasing. When filtering rainwater, the rainwater is first passed through the first-stage filter screen multiple times, the number of times equal to the number of single-mesh cycles. After the first-stage filter screen completes its cycle, the rainwater is introduced into the second-stage rainwater filtration system, where it is filtered multiple times through the filter screen, the number of times equal to the number of single-mesh cycles. This process is repeated, circulating the rainwater through all the filtration systems in a step-by-step manner to complete the single-mesh cycle filtration of the rainwater.

[0043] The scum filtration unit sends the collected scum to the scum treatment unit, which uses scum pretreatment equipment to squeeze and drain the scum.

[0044] Before the scum is squeezed and drained, the scum treatment unit allows the scum to stand for a short time to allow some water to flow back. Then, the squeezing and draining begins. The weight of the scum collected by the scum treatment unit before the squeezing and draining begins is recorded as the initial weight. During the squeezing and draining process, the weight of the scum collected continuously is recorded as the real-time weight. When obtaining the real-time weight, the scum treatment unit simultaneously obtains the squeezing force during the squeezing and draining process, and calculates the difference between the squeezing force and the real-time weight to obtain the actual weight of the scum.

[0045] The scum treatment unit compares the initial weight with the actual weight of the scum to obtain the amount of squeezed water.

[0046] The scum treatment unit generates a scum ratio by comparing the amount of squeezed water with the initial weight;

[0047] The drain ratio is compared with the set expected drain range. If the drain ratio is greater than the maximum value in the expected drain range, a drain too high signal is generated. If the drain ratio is less than the minimum value in the expected drain range, a drain insufficient signal is generated. If the drain ratio is within the expected drain range, a drain normal signal is generated.

[0048] After receiving a signal indicating insufficient drainage, the scum treatment unit increases the squeezing pressure; after receiving a signal indicating excessive drainage, it decreases the squeezing pressure. This ensures that the scum has a low moisture content while avoiding excessive energy consumption during squeezing and drainage. The low moisture content of the scum also improves the efficiency of subsequent scum drying.

[0049] Example 2:

[0050] Please see Figure 1 - Figure 2 As shown, after the scum filtration unit finishes scum removal from the water body, it sends a scum removal completion signal to the rainwater purification unit. After receiving the scum removal completion signal, the rainwater purification unit immediately performs purification operations on the rainwater. The purification operations include flocculant sedimentation steps, physicochemical purification steps, and aeration treatment steps.

[0051] When the rainwater purification unit is purifying rainwater, each step is controlled separately. The basis for this control is the control range, and the actual control results of the rainwater purification unit are recorded as the actual range. Both the actual range and the control range include three sets: purification time, purification conditions, and purification treatment volume.

[0052] The rainwater purification unit compares the actual range with the control range. The control range contains three sets of standard values. The comparison method is as follows: the purification time, purification conditions, and purification capacity are treated as three separate parameters. Each parameter in the actual range is compared with the standard value in the control range to obtain the ratio of the three sets of parameters. The comparison values ​​are then arithmetically averaged to obtain the overlap ratio.

[0053] If the overlap ratio between the actual range and the control range is greater than the set value, a normal control signal is generated. If the overlap ratio between the actual range and the control range is less than the set value, a control abnormal signal is generated. The rainwater purification unit sends the control abnormal signal or the control normal signal to the management device through the network. The management device displays the signal on a screen, thereby realizing the monitoring of the operation status of the rainwater purification equipment.

[0054] During the rainwater purification process, the purification monitoring unit continuously monitors and collects rainwater purification information, including impurity content and treatment ratio. The impurity content refers to the amount of residual scum in the water body, and the treatment ratio is the reduction ratio of the content of the purified substances corresponding to each rainwater purification step. The flocculant sedimentation step, physicochemical purification step, and aeration treatment step in the purification process each have a corresponding treatment ratio.

[0055] After obtaining the impurity content, the purification monitoring unit compares the impurity content with the actual weight of the scum to obtain the impurity ratio. The purification monitoring unit then performs threshold analysis on the impurity ratio to generate a normal impurity signal or an impurity exceeding the standard signal.

[0056] After the purification monitoring unit detects a signal indicating that impurities exceed the standard, it increases the number of cycles for the single-eye filter to improve the effect of the preceding scum pretreatment and avoid affecting the subsequent rainwater purification steps.

[0057] The method for obtaining the treatment ratio by the purification monitoring unit is as follows:

[0058] The purification monitoring unit acquires the content ratio of the purified substance at the start of purification and records it as the initial ratio. It calculates the difference between the initial ratio and the currently acquired purified substance ratio to obtain the content decay ratio. The purification monitoring unit then calculates the ratio between the content decay ratio and the initial ratio to obtain the treatment ratio.

[0059] The purification monitoring unit performs threshold analysis on the treatment ratio and the set standard ratio. If the treatment ratio reaches the set standard ratio, a treatment compliance signal is generated; if the treatment ratio does not reach the set standard ratio, a treatment abnormality signal is generated.

[0060] Example 3:

[0061] Please see Figure 1 - Figure 2 As shown, the purification statistics unit performs correlation analysis on the purification effect indicators, obtains the correlation between different locations based on the correlation analysis results, and sends the correlation results to the management device through the network. After obtaining the correlation results, the management device displays the output on the screen.

[0062] The method for performing correlation analysis on the treatment ratio in the purification statistics unit is as follows:

[0063] The purification statistics unit obtains the processing ratio of each step and sorts the processing ratios of the steps according to the order of the steps to obtain the effect sequence.

[0064] The purification statistics unit compares the effect sequences obtained multiple times to obtain the change range of the treatment ratio at the same position. If the change range of the treatment ratio is the same at at least two positions in the effect sequence, the treatment ratio at the same position is recorded as the associated position.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rainwater purification system based on scum pretreatment, characterized in that, It includes a scum filtration unit, a rainwater purification unit, a purification monitoring unit, a purification statistics unit, and a scum treatment unit; The scum filtration unit collects scum from the rainwater and sends the collected scum to the scum treatment unit, which uses a scum pretreatment device to squeeze and drain the scum. During the scum extrusion and dewatering process, the scum treatment unit acquires the amount of scum drained and adjusts the extrusion force based on the amount of scum drained. After the scum filtration unit finishes scavenging the scum in the water, it sends a scavenging completion signal to the rainwater purification unit. Upon receiving the scavenging completion signal, the rainwater purification unit immediately begins purifying the rainwater. During the rainwater purification process, the purification monitoring unit continuously monitors and collects rainwater purification data, analyzes the data to obtain purification effect indicators, and sends these indicators to the purification statistics unit. The purification statistics unit performs correlation analysis on purification effect indicators and generates a rainwater purification report based on the correlation analysis results. The rainwater purification information collected by the purification monitoring unit includes impurity content and treatment ratio. The impurity content is the amount of residual scum in the water body, and the treatment ratio is the content reduction ratio corresponding to the rainwater purification operation steps. The number of treatment ratio items is the same as the number of purification operation steps. The method by which the purification monitoring unit obtains the treatment ratio is as follows: The purification monitoring unit acquires the content ratio at the start of purification and records it as the initial ratio. It calculates the difference between the initial ratio and the currently acquired ratio to obtain the content decay ratio. The purification monitoring unit then calculates the ratio between the content decay ratio and the initial ratio to obtain the treatment ratio. The purification monitoring unit performs threshold analysis on the treatment ratio and the set standard ratio, and generates a treatment compliance signal or a treatment abnormality signal based on the analysis results. The method used by the purification statistics unit to perform correlation analysis on the treatment ratio is as follows: The purification statistics unit obtains the processing ratio of each step and sorts the processing ratios of the steps according to the order of the steps to obtain the effect sequence. The purification statistics unit compares the effect sequences obtained multiple times to obtain the change range of the treatment ratio at the same position. If the change range of the treatment ratio is the same at at least two positions in the effect sequence, the treatment ratio at the same position is recorded as the associated position.

2. The rainwater purification system based on scum pretreatment according to claim 1, characterized in that, When the scum filtration unit removes scum from rainwater, it does so by circulating the rainwater through multiple sets of fixed filter screens in a single-mesh manner. The multiple sets of fixed filter screens are divided into different mesh sizes. The method for single-mesh circulation of the scum filtration unit is as follows: after circulating the rainwater through the current mesh number of the filter screen a set number of times, the rainwater is then circulated through each group of filter screens with subsequent mesh numbers.

3. The rainwater purification system based on scum pretreatment according to claim 1, characterized in that, After the scum treatment unit obtains the scum it has collected, it collects the weight of the scum, records the weight of the scum collected before the squeezing and draining begins as the initial weight, and records the weight of the scum collected continuously during the squeezing and draining process as the real-time weight. When the scum treatment unit obtains the real-time weight, it simultaneously obtains the squeezing force during the squeezing and draining process, and calculates the difference between the squeezing force and the real-time weight to obtain the actual weight of the scum. The scum treatment unit compares the initial weight with the actual weight of the scum to obtain the amount of water squeezed out.

4. The rainwater purification system based on scum pretreatment according to claim 3, characterized in that, The scum treatment unit generates a drainage ratio by comparing the amount of water squeezed out with the initial weight. The drainage ratio is compared with the set expected drainage range to generate a signal indicating insufficient drainage, normal drainage, or excessive drainage. After obtaining the signal indicating insufficient drainage, the scum treatment unit increases the squeezing force; after obtaining the signal indicating excessive drainage, it decreases the squeezing force.

5. The rainwater purification system based on scum pretreatment according to claim 1, characterized in that, When the rainwater purification unit purifies rainwater, it controls each purification step individually, including the purification time, purification conditions, and purification volume. The rainwater purification unit collects data on the actual range and compares it with the control range. If the overlap ratio between the actual range and the control range is greater than a set value, a normal control signal is generated; if the overlap ratio is less than a set value, an abnormal control signal is generated.

6. The rainwater purification system based on scum pretreatment according to claim 5, characterized in that, After obtaining the impurity content, the purification monitoring unit compares the impurity content with the actual weight of the scum to obtain the impurity ratio. The purification monitoring unit then performs threshold analysis on the impurity ratio to generate a normal impurity signal or an impurity exceeding the standard signal. After acquiring a signal indicating that impurities exceed the standard, the purification monitoring unit increases the number of cycles for the monocular camera.

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