A residual chlorine decay control system based on sodium hypochlorite drinking water treatment

Abstract

This invention relates to the technical field of drinking water purification and treatment, and in particular to a residual chlorine decay control system based on sodium hypochlorite drinking water treatment. The invention includes a residual chlorine decay control system within a primary water supply system. The primary water supply system comprises a tiered water supply system connected to a water supply network. An initial chlorine concentration adjustment system is installed at the connection between the tiered water supply system and the water supply network. A secondary water supply system is connected to the primary water supply system via the water supply network. A secondary chlorination system is installed within the water supply storage system. The network monitoring system can monitor data parameters, including residual chlorine concentration, within the water supply network in real time. The network control system can adjust the residual chlorine concentration and other parameters within the water supply network based on the data monitored by the network monitoring system, maintaining the residual chlorine concentration in the water supply network, reducing the growth of microorganisms, bacteria, and fungi during the water supply process. The secondary chlorination system maintains the residual chlorine concentration in the water supply storage system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drinking water purification treatment, and in particular to a residual chlorine decay control system based on sodium hypochlorite drinking water treatment. BACKGROUND

[0002] Sodium hypochlorite is a disinfectant widely used in the fields of drinking water, drinking water treatment, swimming pools, etc. The main action mode of sodium hypochlorite disinfection and sterilization is to form hypochlorous acid through its hydrolysis, and to make the protein of bacteria and viruses denatured by the strong oxidizing property of the chlorine ion in the hypochlorous acid, so as to kill pathogenic microorganisms. Residual chlorine refers to the effective chlorine remaining in water after chlorination disinfection and contact for a certain period of time. Residual chlorine can be divided into combined residual chlorine and free residual chlorine. The residual chlorine of tap water refers to free residual chlorine. In the process of drinking water disinfection, the dosage of residual chlorine, contact time and water quality factors affect the effect of killing microorganisms. Residual chlorine will also react with organic matter in water, resulting in gradual decrease of residual chlorine concentration. This process is called residual chlorine decay.

[0003] The residual chlorine decay process has certain regularity. Controlling residual chlorine decay is not only important in the field of drinking water disinfection, but also important in the field of water quality treatment of industrial wastewater, urban drainage, etc. Effective control of residual chlorine decay in the water supply process helps to maintain the residual chlorine concentration in the water supply process, reduce the decrease of water quality in the water supply process, and ensure that the residual chlorine content in the final water supply does not affect human health.

[0004] In the current technology, there are problems of inaccuracy and incompleteness in control. There is a lack of effective control and detection means for factors that can affect the residual chlorine concentration in the water supply process. Therefore, it is difficult to grasp the changes of water quality and residual chlorine concentration in the water supply process, and ultimately the ability to ensure the safety of water supply is weak. SUMMARY

[0005] In order to realize the accurate control of residual chlorine concentration in the water supply process and ensure the safety of water supply, the present application provides a residual chlorine decay control system based on sodium hypochlorite drinking water treatment.

[0006] The residual chlorine decay control system based on sodium hypochlorite drinking water treatment provided by the present application adopts the following technical scheme:

[0007] A residual chlorine decay control system based on sodium hypochlorite drinking water treatment includes a residual chlorine decay control system within a primary water supply system. The primary water supply system includes a tiered water supply system connected to a water supply network. An initial chlorine concentration adjustment system is installed at the connection between the tiered water supply system and the water supply network. The initial chlorine concentration adjustment system detects and adjusts the chlorine concentration in the water flowing into the water supply network from the tiered water supply system. A network monitoring system and a network control system are installed within the water supply network. The network monitoring system monitors water quality data within the water supply network, and the network control system controls and adjusts the water quality within the water supply network.

[0008] The residual chlorine decay control system also includes a residual chlorine decay control system within the secondary water supply system. The secondary water supply system is connected to the primary water supply system via a water supply network. The secondary water supply system includes a water supply storage system, which is equipped with a secondary chlorine replenishment system. The secondary chlorine replenishment system detects and controls the chlorine concentration within the water supply storage system. A water supply quality control system is installed at the outlet of the water supply storage system to regulate the water quality of the water effluent from the water supply storage system.

[0009] The primary water supply system distributes purified water from the water treatment plant to individual users. The secondary water supply system redistributes water received from the primary system to specific water outlets or users in factories or residential areas. The tiered water supply system categorizes the purified water, and the water supply network then transports this tiered water over long distances to different user units. The initial chlorine concentration regulation system adjusts the chlorine concentration in the water flowing into the water supply network from the tiered system, ensuring a high chlorine concentration to accommodate the rate of residual chlorine decay in subsequent water supplies. The network monitoring system monitors the water supply network in real time, including residual chlorine concentration. Data parameters: The pipeline network control system can monitor the residual chlorine concentration and other parameters in the water supply network based on the data monitored by the pipeline network monitoring system. This maintains the residual chlorine concentration in the water supply network and reduces the growth of microorganisms, bacteria, and fungi during the water supply process. The water supply storage system in the secondary water supply system is used to temporarily store the water supplied by the primary water supply system, which facilitates the control of residual chlorine content, ensuring that water quality is reduced and pollution is minimized while ensuring that residual chlorine does not affect the health of users. The secondary chlorination system is used to supplement chlorine in the water supply storage system to maintain the residual chlorine concentration when water is stored for a long time. The water supply quality control system is used to monitor and control the chlorine concentration of the water effluent from the water supply storage system to avoid high chlorine concentrations from affecting the health of users.

[0010] Furthermore, the initial chlorine concentration adjustment system includes an initial chlorine concentration detection device, which is connected to an initial chlorine replenishment device and an initial chlorine reduction device via control wires. If the initial chlorine concentration detection device detects that the chlorine concentration is lower than a predetermined value, it activates the initial chlorine replenishment device to replenish chlorine in the effluent from the tiered water supply system flowing into the water supply network. If the initial chlorine concentration detection device detects that the chlorine concentration is higher than a predetermined value, it activates the initial chlorine reduction device to remove chlorine from the effluent from the tiered water supply system flowing into the water supply network. A mixing and stirring device is installed near the initial chlorine replenishment device.

[0011] The initial chlorine concentration detection device is used to detect the chlorine concentration in the water flowing into the water supply network of the graded water supply system, which serves as the initial concentration for residual chlorine decay. The initial chlorine replenishment device and the initial chlorine reduction device are used to bidirectionally adjust the initial residual chlorine concentration to meet the initial chlorine concentration requirements. The mixing and stirring device is used to uniformly mix the added sodium hypochlorite and the water supply to ensure a uniform initial chlorine concentration in the water supply.

[0012] Furthermore, the pipeline monitoring system includes a pipeline chlorine concentration monitoring device, an organic matter monitoring device, a temperature monitoring device, a pH monitoring device, a water supply flow rate monitoring device, a water supply pipe detection device, and a water supply impurity monitoring device. The sensing ends of the pipeline chlorine concentration monitoring device, organic matter monitoring device, temperature monitoring device, pH monitoring device, water supply flow rate monitoring device, water supply pipe detection device, and water supply impurity monitoring device are installed alternately inside the water supply pipeline. The water supply pipe detection device uses a flaw detection scanning device to detect internal damage and surface oxidation of the water supply pipeline.

[0013] The pipeline chlorine concentration monitoring device is used to monitor the residual chlorine concentration in the water supply network throughout the entire process, which helps to detect changes in residual chlorine concentration caused by special environmental conditions during the water supply process in a timely manner. The organic matter monitoring device is used to monitor the organic matter concentration in the water supply network, which helps to detect organic pollution and microbial growth in a timely manner. The temperature monitoring device is used to monitor the temperature changes in the water supply network, which helps to understand the changes in residual chlorine concentration based on temperature changes. The pH monitoring device is used to monitor the pH of the water in the water supply network, which helps to understand the impact of pH changes on residual chlorine concentration in a timely manner. The water flow rate monitoring device is used to monitor the water flow rate changes in the water supply network, which indirectly helps to understand and predict changes in residual chlorine concentration. The water supply pipe detection device is used to detect the usage data of the water supply pipes. The water supply impurity monitoring device is used to detect impurities in the water supply, which helps to detect damage and pollution of the water supply pipes in a timely manner.

[0014] Furthermore, the pipeline control system includes a pipeline chlorination device, a temperature regulation device, an acid-base regulation device, an ultraviolet control device, an impurity filtration device, and a water supply control device. The pipeline chlorination device uses a sodium hypochlorite electrolysis generator to produce sodium hypochlorite and release it into the water supply pipeline. The temperature regulation device includes insulation wrapping, a cooling device, and a heating device. The acid-base regulation device includes an acid replenishment device and an alkali replenishment device. The ultraviolet control device uses an ultraviolet generator to generate ultraviolet light to irradiate the water supply in the water supply pipeline. The impurity filtration device is installed at intervals in the water supply pipeline and performs graded filtration of the water supply. The water supply control device includes a water interception device and a flow limiting device.

[0015] The pipeline chlorination device is used to replenish sodium hypochlorite into the water supply network to maintain the residual chlorine concentration in the water supply pipeline. The temperature regulation device is used to maintain the water supply temperature in the water supply network and reduce the impact of high and low temperatures on the residual chlorine concentration in the water supply. The acid-base regulation device is used to regulate the acidity and alkalinity of the water supply network and maintain the acid-base environment for the normal decay of residual chlorine concentration. The ultraviolet control device uses ultraviolet irradiation to sterilize and disinfect the water supply and simultaneously affect the decay rate of residual chlorine concentration. The impurity filtration device is used to filter impurities in the water supply, maintain the water quality of the water supply, and reduce the impact of pipeline pollution on the decay of residual chlorine concentration. The water supply control device is used to start and stop the water supply and prevent contaminated water from entering the secondary water supply system during the water supply process.

[0016] Furthermore, the initial chlorine concentration regulation system, the pipeline monitoring system, and the pipeline control system are all communicatively connected to a data center. The data center includes a data collection module, a model building module, a data display module, a prediction and evolution module, and a control operation module. The detection part of the initial chlorine concentration regulation system and the pipeline monitoring system send the detected data to the data collection module. The data collection module sends the collected data information to the model building module and the prediction and evolution module for analysis and processing. The data display module displays the data collected by the data collection module and the results obtained from the analysis and processing by the model building module and the prediction and evolution module. The control operation module performs control and execution operations on the execution part of the initial chlorine concentration regulation system and the pipeline control system based on the data collected by the data collection module and the results obtained from the analysis and processing by the model building module and the prediction and evolution module.

[0017] The data center combines the collected data with a prediction model to comprehensively predict and control residual chlorine in the water supply process, ensuring that the residual chlorine concentration remains within a reasonable range and effectively maintaining water quality. The data collection module collects data on residual chlorine concentration in the water supply. Based on this data, a residual chlorine concentration decay model is built in the model building module. Then, based on the decay model, the change in residual chlorine concentration is predicted in the prediction evolution module. The data display module facilitates the presentation of data to monitoring operators, enabling them to promptly detect abnormalities. The control operation module allows monitoring operators to remotely operate the pipeline control system.

[0018] Furthermore, the tiered water supply system includes a main water supply station and branch pumping stations. The main water supply station is connected to short-distance water supply stations and long-distance water supply stations through the branch pumping stations. The short-distance water supply stations include residential water supply stations and industrial water supply stations.

[0019] The water distribution pumping station is used to distribute water from the main water supply station to short-distance and long-distance water supply stations. The short-distance water supply stations supply water to users in nearby areas, while the long-distance water supply stations supply water to users in distant areas. This allows for easy adjustment of the initial chlorine concentration in the water supply according to different water supply distances and different users.

[0020] Furthermore, the water supply and storage system includes a water storage tank, which is covered with an insulation layer. The water inlet of the water storage tank is connected to an inlet pump, and the water outlet is connected to an outlet pump. A water volume monitoring device is installed inside the water storage tank, and secondary filters are installed at both the water inlet and outlet of the water storage tank.

[0021] The water storage tank is used to temporarily store water, which facilitates water supply to high-rise users and prevents water shortages caused by water outages. At the same time, it helps to further control the water quality and avoid the impact of residual high chlorine concentration on users' health.

[0022] Furthermore, the secondary chlorination system includes an in-tank chlorine concentration monitoring device, an in-tank organic matter monitoring device, and an in-tank chlorination device. The in-tank chlorine concentration monitoring device and the in-tank organic matter monitoring device are connected to the in-tank chlorination device. When the in-tank chlorine concentration is lower than a predetermined value or the in-tank organic matter concentration is higher than a predetermined value, the in-tank chlorination device is activated to replenish chlorine in the stored water supply. The in-tank chlorination device uses a sodium hypochlorite electrolysis generator to produce sodium hypochlorite and release it into the stored water supply for chlorination.

[0023] The in-tank chlorine concentration monitoring device and the in-tank organic matter monitoring device are helpful for real-time monitoring of water quality changes during long-term storage, and facilitate timely adjustment of chlorine concentration through the in-tank chlorine replenishment device to control water quality.

[0024] Furthermore, the water supply quality control system includes an outlet chlorine concentration monitoring device, a control water supply valve, and a dechlorination device. The outlet chlorine concentration monitoring device is connected to the control water supply valve and the dechlorination device via a control wire. If the outlet chlorine concentration monitoring device detects that the chlorine concentration in the water outlet of the water supply storage system is higher than a predetermined value, it will drive the control water supply valve to stop the water supply and start the dechlorination device to remove chlorine from the water supply. The dechlorination device includes ultraviolet light dechlorination, high temperature dechlorination, and capillary filtration dechlorination.

[0025] The outlet chlorine concentration monitoring device is used to detect the residual chlorine concentration in the output water to prevent high chlorine concentration water from entering users. It also controls the water supply valve to automatically shut off substandard water supply. The dechlorination device is used to reduce the chlorine concentration in the water.

[0026] Furthermore, the secondary water supply system also includes a water recycling system, which includes a recycling pipe and a biological culture tank, with the recycling pipe connecting the water supply storage system and the biological culture tank.

[0027] The water recycling system is used to recycle substandard water, and the biological culture tank is used to consume excess sodium hypochlorite.

[0028] In summary, the present invention has the following beneficial technical effects:

[0029] 1. The primary water supply system distributes purified water from the water treatment plant to individual users. The secondary water supply system redistributes water received from the primary system to specific water outlets or users in factories or residential areas. The tiered water supply system categorizes the purified water from the water treatment plant, and the water supply network then transports this tiered water to different user units over long distances. The initial chlorine concentration regulation system adjusts the chlorine concentration in the water flowing into the water supply network from the tiered water supply system, ensuring a high chlorine concentration to accommodate the rate of residual chlorine decay in subsequent water supplies. The network monitoring system monitors the water supply network in real time, including residual chlorine concentration, etc. Based on the data parameters, the pipeline network control system can monitor the residual chlorine concentration and other parameters within the water supply network, maintaining the residual chlorine concentration in the water supply network and reducing the growth of microorganisms, bacteria, and fungi during the water supply process. The water supply storage system in the secondary water supply system is used to temporarily store the water supplied by the primary water supply system, facilitating the control of residual chlorine content, ensuring water quality by reducing pollution, and ensuring that residual chlorine does not affect user health. The secondary chlorination system is used to replenish chlorine in the water supply storage system, maintaining the residual chlorine concentration during long-term water storage. The water supply quality control system is used to monitor and control the chlorine concentration of the water effluent from the water supply storage system, avoiding high chlorine concentrations from affecting user health.

[0030] 2. The initial chlorine concentration detection device is used to detect the chlorine concentration in the water flowing into the water supply network of the graded water supply system, as the initial concentration for residual chlorine decay. The initial chlorine replenishment device and the initial chlorine reduction device are used to bidirectionally adjust the initial residual chlorine concentration to meet the initial chlorine concentration requirements. The mixing and stirring device is used to uniformly mix the added sodium hypochlorite and the water supply to ensure that the initial chlorine concentration of the water supply is uniform.

[0031] 3. The pipeline chlorine concentration monitoring device is used to monitor the residual chlorine concentration in the water supply network throughout the entire process, which is conducive to timely detection of residual chlorine concentration changes caused by special environmental conditions during the water supply process. The organic matter monitoring device is used to monitor the organic matter concentration in the water supply network, which can promptly detect organic matter pollution and microbial growth. The temperature monitoring device is used to monitor the temperature changes in the water supply network, which can facilitate the understanding of residual chlorine concentration changes based on temperature changes. The pH monitoring device is used to monitor the pH of the water in the water supply network, which can facilitate the timely understanding of the impact of pH changes on residual chlorine concentration. The water flow rate monitoring device is used to monitor the water flow rate changes in the water supply network, which can indirectly understand and predict the changes in residual chlorine concentration. The water supply pipe detection device is used to detect the usage data of the water supply pipes. The water supply impurity monitoring device is used to detect impurities in the water supply, which can facilitate the timely detection of damage and pollution of the water supply pipes.

[0032] 4. The pipeline chlorination device is used to replenish sodium hypochlorite into the water supply network to maintain the residual chlorine concentration in the water supply pipeline. The temperature regulation device is used to maintain the water supply temperature in the water supply network and reduce the impact of high and low temperatures on the residual chlorine concentration in the water supply. The acid-base regulation device is used to regulate the acidity and alkalinity of the water supply network and maintain the acid-base environment for the normal decay of residual chlorine concentration. The ultraviolet control device uses ultraviolet irradiation to sterilize and disinfect the water supply and simultaneously affect the decay rate of residual chlorine concentration. The impurity filtration device is used to filter impurities in the water supply, maintain the water quality of the water supply, and reduce the impact of pipeline pollution on the decay of residual chlorine concentration. The water supply control device is used to start and stop the water supply to prevent contaminated water from entering the secondary water supply system during the water supply process.

[0033] 5. The data center combines the collected data with a prediction model to comprehensively predict and control residual chlorine in the water supply process, ensuring that the residual chlorine concentration remains within a reasonable range and effectively maintaining water quality. The data collection module collects data on residual chlorine concentration in the water supply. Based on this data, a residual chlorine concentration decay model is built in the model building module. Then, based on the decay model, the change in residual chlorine concentration is predicted in the prediction evolution module. The data display module facilitates the display of data to monitoring operators, enabling them to promptly detect abnormalities. The control operation module facilitates remote operation of the pipeline control system by monitoring operators.

[0034] 6. The water distribution pumping station is used to distribute water from the main water supply station to short-distance and long-distance water supply stations. The short-distance water supply station supplies water to users in the nearby area, while the long-distance water supply station supplies water to users in the distant area. This allows for easy adjustment of the initial chlorine concentration in the water supply according to different water supply distances and different users.

[0035] 7. The water storage tank is used to temporarily store water, facilitating water supply to high-rise users and preventing water shortages caused by water outages. It also helps to further control the water quality and avoid the health risks of residual high chlorine concentrations. The chlorine concentration monitoring device and organic matter monitoring device inside the tank are used to monitor water quality changes in real time over long periods of storage. The chlorine concentration can be adjusted in a timely manner through the chlorine replenishment device inside the tank to control water quality. The outlet chlorine concentration monitoring device is used to detect the residual chlorine concentration in the output water to prevent high chlorine concentration water from entering users. The water supply valve can automatically shut off substandard water supply. The dechlorination device is used to reduce the chlorine concentration in the water. The water supply recycling system is used to recycle substandard water supply. The biological culture tank is used to consume excess sodium hypochlorite. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the two-stage water supply connection of the present invention;

[0037] Figure 2 This is a schematic diagram of the connection of the monitoring and control system within the primary water supply system of the present invention;

[0038] Figure 3 This is a schematic diagram of the data center connection of the present invention;

[0039] Figure 4 This is a schematic diagram of the connection of the monitoring and control system within the secondary water supply system of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Primary water supply system; 11. Tiered water supply system; 111. Main water supply station; 110. Branch pumping station; 112. Short-distance water supply station; 113. Residential water supply station; 114. Industrial water supply station; 115. Long-distance water supply station; 116. Water supply network; 12. Initial chlorine concentration adjustment system; 121. Initial chlorine concentration detection device; 122. Initial chlorine replenishment device; 123. Initial chlorine reduction device; 124. Mixing and stirring device; 13. Network monitoring system; 131. Network chlorine concentration monitoring device; 132. Organic matter monitoring device; 133. Temperature monitoring device. 134. pH monitoring device; 135. Water supply flow rate monitoring device; 136. Water supply pipe detection device; 137. Water supply impurity monitoring device; 14. Pipeline control system; 141. Pipeline chlorination device; 142. Temperature regulation device; 143. pH regulation device; 144. Ultraviolet control device; 145. Impurity filtration device; 146. Water supply control device; 15. Data center; 151. Data collection module; 152. Model building module; 153. Data display module; 154. Prediction and evolution module; 155. Control operation module.

[0042] 2. Secondary water supply system; 21. Water supply storage system; 211. Water storage tank; 212. Insulation layer; 213. Inlet pump; 214. Outlet pump; 215. Water volume monitoring device; 216. Secondary filter; 22. Secondary chlorination system; 221. In-tank chlorine concentration monitoring device; 222. In-tank organic matter monitoring device; 223. In-tank chlorination device; 23. Water supply quality control system; 231. Outlet chlorine concentration monitoring device; 232. Control water supply valve; 233. Dechlorination device; 24. Water supply recovery system; 241. Recovery pipe; 242. Biological culture tank. Detailed Implementation

[0043] The following will be combined with the appendix Figures 1-4 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0045] Example 1:

[0046] This invention discloses a residual chlorine decay control system based on sodium hypochlorite drinking water treatment, referring to... Figure 1 The system includes a residual chlorine decay control system in a primary water supply system 1, wherein the primary water supply system 1 includes a graded water supply system 11, and the graded water supply system 11 is connected to a water supply network 116.

[0047] The tiered water supply system 11 is located near the waterworks, and the water supply network 116 is laid in underground pipes.

[0048] An initial chlorine concentration regulating system 12 is installed at the connection between the graded water supply system 11 and the water supply network 116. The initial chlorine concentration regulating system 12 detects and regulates the chlorine concentration in the water flowing into the water supply network 116 from the graded water supply system 11. A network monitoring system 13 and a network control system 14 are installed in the water supply network 116. The network monitoring system 13 monitors the water quality data in the water supply network 116, and the network control system 14 controls and regulates the water quality in the water supply network 116.

[0049] The initial chlorine concentration adjustment system 12 monitors the initial chlorine concentration in the water in real time and automatically adjusts it according to the monitoring data to ensure that the initial chlorine concentration meets the predetermined value requirement. The predetermined value requirement for the initial chlorine concentration is calculated based on past experience and the residual chlorine decay law.

[0050] It also includes a residual chlorine decay control system in the secondary water supply system 2, which is connected to the primary water supply system 1 through the water supply network 116.

[0051] Secondary water supply system 2 is installed underground in the residential area;

[0052] The secondary water supply system 2 includes a water supply storage system 21, a secondary chlorination system 22 is installed in the water supply storage system 21, the secondary chlorination system 22 detects and controls the chlorine concentration in the water supply storage system 21, and a water supply quality control system 23 is installed at the outlet of the water supply storage system 21 to regulate the water quality of the water supply storage system 21.

[0053] The secondary chlorination system 22 obtains a high-concentration sodium hypochlorite solution by electrolyzing brine, and then releases the sodium hypochlorite solution into the water supply storage system 21. When water needs to be supplied to residents, the water supply quality control system 23 detects the residual chlorine concentration and removes excess residual chlorine.

[0054] Example 2:

[0055] Based on Example 1, the following is added:

[0056] Reference Figure 2The initial chlorine concentration adjustment system 12 includes an initial chlorine concentration detection device 121. The initial chlorine concentration detection device 121 is connected to an initial chlorine replenishment device 122 and an initial chlorine reduction device 123 via control wires. If the initial chlorine concentration detection device 121 detects that the chlorine concentration is lower than a predetermined value, it activates the initial chlorine replenishment device 122 to replenish chlorine in the effluent from the graded water supply system 11 flowing into the water supply network 116. If the initial chlorine concentration detection device 121 detects that the chlorine concentration is higher than a predetermined value, it activates the initial chlorine reduction device 123 to remove chlorine from the effluent from the graded water supply system 11 flowing into the water supply network 116. A mixing and stirring device 124 is installed near the initial chlorine replenishment device 122.

[0057] The initial chlorine concentration detection device 121 uses a chloride ion sensor to detect the chlorine concentration in the water flowing into the water supply network 116 from the graded water supply system 11 in real time. The initial chlorine replenishment device 122 obtains a high-concentration sodium hypochlorite solution by electrolyzing brine.

[0058] When the initial chlorination device 122 releases a high-concentration sodium hypochlorite solution into the graded water supply system 11, the mixing and stirring device 124 rotates and stirs, causing the sodium hypochlorite solution to quickly blend into the water.

[0059] Reference Figure 2 The pipeline monitoring system 13 includes a pipeline chlorine concentration monitoring device 131, an organic matter monitoring device 132, a temperature monitoring device 133, a pH monitoring device 134, a water supply flow rate monitoring device 135, a water supply pipe detection device 136, and a water supply impurity monitoring device 137. The sensing ends of the pipeline chlorine concentration monitoring device 131, organic matter monitoring device 132, temperature monitoring device 133, pH monitoring device 134, water supply flow rate monitoring device 135, water supply pipe detection device 136, and water supply impurity monitoring device 137 are installed at intervals inside the pipes of the water supply pipeline 116. The water supply pipe detection device 136 uses a flaw detection scanning device to detect internal damage and surface oxidation of the water supply pipeline 116.

[0060] Experimental results show that as the concentration of organic matter increases, the residual chlorine decay coefficient also increases accordingly; the higher the initial chlorine concentration, the greater the total decay, but the decay coefficient of the main water decreases as the initial concentration increases; the lower the pH, the greater the residual chlorine decay coefficient; within the range of 4℃-30℃, the higher the temperature, the faster the residual chlorine decay rate.

[0061] The residual chlorine decay coefficient in the pipe network increases with the increase of flow velocity. The increase of flow velocity will accelerate the shedding of substances attached to the pipe wall, causing the turbidity of the pipe network water to rise. The smaller the pipe diameter, the greater the contact rate between the pipe network water and the pipe wall, and the greater the residual chlorine decay coefficient in the pipe network.

[0062] Reference Figure 2The pipeline control system 14 includes a pipeline chlorination device 141, a temperature regulating device 142, an acid-base regulating device 143, an ultraviolet control device 144, an impurity filtration device 145, and a water supply control device 146. The pipeline chlorination device 141 uses a sodium hypochlorite electrolysis generator to generate sodium hypochlorite and release it into the water supply pipeline 116. The temperature regulating device 142 includes a heat preservation wrap, a cooling device, and a heating device. The acid-base regulating device 143 includes an acid replenishment device and an alkali replenishment device. The ultraviolet control device 144 uses an ultraviolet generator to generate ultraviolet light to irradiate the water supply in the water supply pipeline 116. The impurity filtration device 145 is installed at intervals in the water supply pipeline 116 and performs graded filtration of the water supply. The water supply control device 146 includes a water interception device and a flow limiting device.

[0063] The pipeline chlorination device 141 obtains a high-concentration sodium hypochlorite solution by electrolyzing brine, and the power sources include municipal power supply and solar power generation.

[0064] Reference Figure 3 The initial chlorine concentration regulation system 12, the pipeline monitoring system 13, and the pipeline control system 14 are all communicatively connected to the data center 15. The data center 15 includes a data collection module 151, a model building module 152, a data display module 153, a prediction and evolution module 154, and a control operation module 155. The detection part of the initial chlorine concentration regulation system 12 and the pipeline monitoring system 13 send the detected data to the data collection module 151. The data collection module 151 sends the collected data information to the model building module 152 and the prediction and evolution module 154 for analysis and processing. The data display module 153 displays the data collected by the data collection module 151 and the results obtained from the analysis and processing by the model building module 152 and the prediction and evolution module 154. The control operation module 155 performs control and execution operations on the execution part of the initial chlorine concentration regulation system 12 and the pipeline control system 14 based on the data collected by the data collection module 151 and the results obtained from the analysis and processing by the model building module 152 and the prediction and evolution module 154.

[0065] The model building module 152 establishes a pattern model based on the patterns derived from previous data collection, taking into account various data influencing factors, including temperature, pH, and flow rate. The prediction evolution module 154 combines the data being collected with the pattern model established by the model building module 152 to predict the evolution.

[0066] Reference Figure 1 The graded water supply system 11 includes a main water supply station 111 and a branch water pump station 110. The main water supply station 111 is connected to a short-distance water supply station 112 and a long-distance water supply station 115 through the branch water pump station 110. The short-distance water supply station 112 includes a residential water supply station 113 and an industrial water supply station 114.

[0067] Example 3:

[0068] Based on Example 1, the following is added:

[0069] Reference Figure 1 The water supply and storage system 21 includes a water storage tank 211, which is covered with an insulation layer 212. The water inlet of the water storage tank 211 is connected to an inlet pump 213, and the water outlet is connected to an outlet pump 214. A water volume monitoring device 215 is installed inside the water storage tank 211. A secondary filter 216 is installed at both the water inlet and outlet of the water storage tank 211.

[0070] Reference Figure 4 The secondary chlorination system 22 includes an in-tank chlorine concentration monitoring device 221, an in-tank organic matter monitoring device 222, and an in-tank chlorination device 223. The in-tank chlorine concentration monitoring device 221 and the in-tank organic matter monitoring device 222 are connected to the in-tank chlorination device 223. When the in-tank chlorine concentration is lower than a predetermined value or the in-tank organic matter concentration is higher than a predetermined value, the in-tank chlorination device 223 is activated to replenish chlorine in the stored water supply. The in-tank chlorination device 223 uses a sodium hypochlorite electrolysis generator to generate sodium hypochlorite and release it into the stored water supply for chlorination.

[0071] Reference Figure 4 The water supply quality control system 23 includes an outlet chlorine concentration monitoring device 231, a control water supply valve 232, and a dechlorination device 233. The outlet chlorine concentration monitoring device 231 is connected to the control water supply valve 232 and the dechlorination device 233 via control wires. When the outlet chlorine concentration monitoring device 231 detects that the chlorine concentration in the water outlet of the water supply storage system 21 is higher than a predetermined value, it drives the control water supply valve 232 to stop the water supply and starts the dechlorination device 233 to dechlorinate the water supply. The dechlorination device 233 includes ultraviolet light dechlorination, high temperature dechlorination, and capillary filtration dechlorination.

[0072] When the outlet chlorine concentration monitoring device 231 detects that the residual chlorine concentration is too high, it closes the control water supply valve 232, so that the water flows into the user after passing through the dechlorination device 233.

[0073] Reference Figure 1 The secondary water supply system 2 further includes a water recycling system 24, which includes a recycling pipe 241 and a biological culture tank 242. The recycling pipe 241 connects the water supply storage system 21 and the biological culture tank 242.

[0074] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A residual chlorine decay control system based on sodium hypochlorite drinking water treatment, comprising a residual chlorine decay control system in a primary water supply system (1), characterized in that: The primary water supply system (1) comprises a hierarchical water supply system (11) connected with a water supply network (116), wherein an initial chlorine concentration adjusting system (12) is arranged at the connection between the hierarchical water supply system (11) and the water supply network (116), the initial chlorine concentration adjusting system (12) detects and adjusts the chlorine concentration of water flowing from the hierarchical water supply system (11) into the water supply network (116), the water supply network (116) is provided with a network monitoring system (13) and a network control system (14), the network monitoring system (13) monitors water quality data in the water supply network (116), and the network control system (14) controls and adjusts the water quality in the water supply network (116); Further comprising a residual chlorine decay control system in a secondary water supply system (2), the secondary water supply system (2) is connected with the primary water supply system (1) through the water supply network (116), the secondary water supply system (2) comprises a water supply storage system (21), the water supply storage system (21) is provided with a secondary chlorine supplement system (22), the secondary chlorine supplement system (22) detects and controls the chlorine concentration in the water supply storage system (21), and a water quality control system (23) is arranged at the water outlet of the water supply storage system (21), the water quality control system (23) adjusts the water quality of water outlet from the water supply storage system (21); The initial chlorine concentration adjusting system (12) comprises an initial chlorine concentration detection device (121), the initial chlorine concentration detection device (121) is connected with an initial chlorine supplement device (122) and an initial chlorine reduction device (123) through control wires, when the initial chlorine concentration detection device (121) detects that the chlorine concentration is lower than a predetermined value, the initial chlorine supplement device (122) is started to supplement chlorine to the water outlet from the hierarchical water supply system (11) into the water supply network (116), when the initial chlorine concentration detection device (121) detects that the chlorine concentration is higher than a predetermined value, the initial chlorine reduction device (123) is started to reduce chlorine to the water outlet from the hierarchical water supply system (11) into the water supply network (116), and a mixing and stirring device (124) is installed near the initial chlorine supplement device (122); The network control system (14) comprises a network chlorine supplement device (141), a temperature adjusting device (142), an acid-base adjusting device (143), an ultraviolet control device (144), an impurity filtering device (145) and a water supply control device (146), the network chlorine supplement device (141) generates sodium hypochlorite by using a sodium hypochlorite electrolytic generator and releases the sodium hypochlorite into the water supply network (116), the temperature adjusting device (142) comprises a heat preservation package, a cooling device and a heating device, the acid-base adjusting device (143) comprises an acid supplement device and an alkali supplement device, the ultraviolet control device (144) generates ultraviolet rays by using an ultraviolet generator and irradiates the water supply in the water supply network (116), the impurity filtering device (145) is installed in the water supply network (116) at intervals and performs hierarchical filtration on the water supply, and the water supply control device (146) comprises a water cutting device and a flow limiting device. The water supply quality control system (23) comprises an outlet chlorine concentration monitoring device (231), a control water supply valve (232) and a chlorine removal device (233), the outlet chlorine concentration monitoring device (231) is connected to the control water supply valve (232) and the chlorine removal device (233) through control wires, when the outlet chlorine concentration monitoring device (231) detects that the chlorine concentration in the water outlet of the water supply storage system (21) is higher than a predetermined value, the control water supply valve (232) is driven to stop water supply and the chlorine removal device (233) is started to remove chlorine from the water supply, the chlorine removal device (233) comprises ultraviolet light chlorine removal, high-temperature chlorine removal and capillary filtration chlorine removal.

2. The residual chlorine decay control system for sodium hypochlorite based drinking water treatment according to claim 1, characterized in that: The pipe network monitoring system (13) comprises a pipe network chlorine concentration monitoring device (131), an organic matter monitoring device (132), a temperature monitoring device (133), a pH monitoring device (134), a water supply flow rate monitoring device (135), a water supply pipe detection device (136) and a water supply impurity monitoring device (137), the sensing detection ends of the pipe network chlorine concentration monitoring device (131), the organic matter monitoring device (132), the temperature monitoring device (133), the pH monitoring device (134), the water supply flow rate monitoring device (135), the water supply pipe detection device (136) and the water supply impurity monitoring device (137) are installed in the pipeline of the water supply pipe network (116) at intervals, and the water supply pipe detection device (136) detects internal damage and surface oxidation of the pipeline of the water supply pipe network (116) by using a flaw detection scanning device.

3. The system for controlling the decay of residual chlorine based on sodium hypochlorite for drinking water treatment according to claim 1, characterized in that: The initial chlorine concentration adjusting system (12), the pipe network monitoring system (13) and the pipe network control system (14) are respectively communicatively connected to a data center (15), the data center (15) comprises a data collection module (151), a model establishment module (152), a data display module (153), a prediction evolution module (154) and a control operation module (155), the detection parts of the initial chlorine concentration adjusting system (12) and the pipe network monitoring system (13) send the detected data to the data collection module (151), the data collection module (151) sends the collected data information to the model establishment module (152) and the prediction evolution module (154) for analysis and processing, the data display module (153) displays the data collected by the data collection module (151) and the results obtained by the analysis and processing of the model establishment module (152) and the prediction evolution module (154), and the control operation module (155) controls the execution operation parts of the initial chlorine concentration adjusting system (12) and the pipe network control system (14) according to the data collected by the data collection module (151) and the results obtained by the analysis and processing of the model establishment module (152) and the prediction evolution module (154).

4. The system for controlling the decay of residual chlorine based on sodium hypochlorite for drinking water treatment according to claim 1, characterized in that: The hierarchical water supply system (11) comprises a total water supply station (111) and a water distribution pump station (110), the total water supply station (111) is connected with a short-distance water supply station (112) and a long-distance water supply station (115) through the water distribution pump station (110), the short-distance water supply station (112) comprises a resident water supply station (113) and an industrial water supply station (114).

5. The system for controlling the decay of residual chlorine based on sodium hypochlorite for drinking water treatment according to claim 1, characterized in that: The water supply storage system (21) comprises a water storage tank (211), the water storage tank (211) is wrapped with a heat preservation layer (212), the water storage tank (211) is connected with a water inlet pump (213) at an inlet end and connected with a water outlet pump (214) at an outlet end, the water storage tank (211) is provided with a water quantity monitoring device (215) inside, and secondary filters (216) are installed at the inlet end and the outlet end of the water storage tank (211).

6. The system for controlling the decay of residual chlorine based on sodium hypochlorite for drinking water treatment according to claim 1, characterized in that: The secondary chlorine supplement system (22) comprises an in-tank chlorine concentration monitoring device (221), an in-tank organic matter monitoring device (222) and an in-tank chlorine supplement device (223), the in-tank chlorine concentration monitoring device (221) and the in-tank organic matter monitoring device (222) are connected with the in-tank chlorine supplement device (223) in control, and when the in-tank chlorine concentration is lower than a predetermined value or the in-tank organic matter concentration is higher than a predetermined value, the in-tank chlorine supplement device (223) is started to supplement chlorine to the stored water supply, and the in-tank chlorine supplement device (223) generates sodium hypochlorite by using a sodium hypochlorite electrolytic generator and releases the sodium hypochlorite to the stored water supply for chlorine supplement.

7. A residual chlorine decay control system for sodium hypochlorite based drinking water treatment according to claim 1, characterized in that: The secondary water supply system (2) further comprises a water supply recovery system (24), the water supply recovery system (24) comprises a recovery pipe (241) and a biological culture pool (242), and the recovery pipe (241) is connected with the water supply storage system (21) and the biological culture pool (242).

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