Chlorine demand on-line automatic measuring device and chlorine demand on-line automatic measuring system

Abstract

The utility model relates to the technical field of tap water treatment, in particular to an on-line automatic chlorine demand measuring device which comprises a reaction water tank, the reaction water tank is used for reaction of raw water and drugs, the reaction water tank is connected with a water quality detector, and the water quality detector is used for detecting residual chlorine data. According to the device and the system, the chlorine demand index of the chlorine disinfection process in the tap water industry is defined, the chlorine demand index of a water body can be quantitatively measured through the device and the system, and accurate quantification of initial feeding of a chlorine disinfectant in the tap water production control process is realized.

Description

Technical Field

[0001] This utility model relates to the field of tap water treatment technology, specifically to an online automatic chlorine demand measurement device and system. Background Technology

[0002] Chlorine requirement refers to the amount of chlorine needed to kill bacteria and oxidize organic matter in water during chlorination disinfection. Currently, domestic water treatment plants widely use liquid chlorine, chlorine dioxide, and sodium hypochlorite to disinfect raw water. Water plants typically adjust disinfectant dosage based on the residual chlorine levels in the sedimentation tank effluent and filtered effluent. This method has the following problems:

[0003] Using the residual chlorine levels of sedimentation tank effluent and filtered effluent as a reference for disinfectant dosing results in long adjustment cycles and a lack of scientific guidance for reagent adjustments. Water plants can manually determine the chlorine requirement of raw water, but this method is susceptible to variations in personnel skill and competence, leading to untimely sampling and inaccurate experimental data. In actual water production, due to changes in water intake and quality, on-site residual chlorine testing in process tanks such as pre-sedimentation tanks and grid flocculation tanks is necessary, placing a significant workload on water treatment personnel. The manual determination of raw water chlorine requirement by water treatment personnel is also susceptible to variations in personnel skill and competence, resulting in problems such as untimely sampling and inaccurate experimental data. Utility Model Content

[0004] The purpose of this invention is to provide an online automatic chlorine demand measurement device and system, which solves the problem that there is no device and system for on-site automatic detection of chlorine demand in existing water treatment technologies.

[0005] This utility model discloses an online automatic chlorine demand determination device, including a reaction tank for reacting raw water and pharmaceuticals, and a water quality analyzer connected to the reaction tank for detecting residual chlorine data.

[0006] Working Principle: First, raw water and chemicals are placed in a reaction tank to react. After complete reaction, the water is discharged into a water quality analyzer for residual chlorine data testing. Based on the data, the required chlorine amount is calculated and applied to the disinfectant dosing equipment in the water plant to control the disinfectant dosage. After collecting the required chlorine data, the reaction tank is cleaned, and then the next test is conducted. By setting up a reaction tank, raw water and chemicals can react, facilitating subsequent residual chlorine data testing. By using a water quality analyzer to test the residual chlorine in the reacted water, the required chlorine amount can be obtained, allowing the water plant to adjust the disinfectant dosage accordingly.

[0007] Furthermore, the device is connected to a controller and a display.

[0008] Setting up controllers and displays facilitates on-site operation and data observation.

[0009] Furthermore, the display has a human-computer interaction interface.

[0010] Furthermore, the reaction tank is connected to a constant-volume water tank.

[0011] By setting up a fixed-volume water tank, a fixed amount of raw water can be stored, ensuring that the amount of raw water used each time is the same, which facilitates data processing.

[0012] Furthermore, a first overflow port is provided on the upper part of the constant volume water tank.

[0013] By setting a first overflow port, any extra raw water added can be discharged from the first overflow port, ensuring that the amount of water in the constant-volume water tank remains the same.

[0014] Furthermore, the reaction tank is connected to a reagent volume adjustment device.

[0015] By setting up a reagent volume control device, it is possible to ensure that the amount of reagent added each time is the same, which facilitates data processing after the reaction.

[0016] Furthermore, the drug volume control device is provided with multiple drug overflow ports.

[0017] Furthermore, the drug volume control device is provided with three drug overflow ports at different heights.

[0018] By setting up three overflow outlets with different heights, the system can adapt to different raw water quality conditions by adjusting the opening and closing of the three overflow outlets.

[0019] Furthermore, the pharmaceutical volume-regulating device is connected to a pharmaceutical storage tank.

[0020] By setting up a medicine storage tank, medicines can be stored, making it convenient to dispense medicines through a medicine volume control device.

[0021] Furthermore, the drug storage tank is provided with a threaded dosing port.

[0022] Because reagents are easily affected by external factors and deteriorate, a threaded dosing port is installed to reduce the impact of the external environment on them, thereby slowing down the rate of reagent deterioration and mitigating its influence on the results.

[0023] Furthermore, a peristaltic pump is installed between the reaction tank and the water quality analyzer.

[0024] By installing a peristaltic pump, water from the reaction tank can be pumped into a water quality analyzer for testing, facilitating the collection and detection of residual chlorine data.

[0025] Furthermore, solenoid valves are used to control the connection between the various devices.

[0026] Furthermore, the device is installed at the front end of the water intake pumping station.

[0027] An automatic chlorine demand determination system, comprising the above-mentioned device.

[0028] Furthermore, the system is equipped with a human-machine interface and control program.

[0029] The entire equipment is controlled by a control program. After calculating the required chlorine level from the residual chlorine data, the program facilitates adjustments to the disinfectant dosage by the water plant. The operating status and monitoring data are displayed through a human-machine interface.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] 1. Currently, automated raw water quality testing instruments can only detect some individual pollution indicators such as ammonia nitrogen, manganese, and permanganate index, providing a reference for water treatment personnel. These personnel then add disinfectant based on these indicators and their operational experience. However, raw water in actual production processes is complex and variable, including but not limited to bacteria and microorganisms. Our company's proposed automatic chlorine demand measurement device can ignore the content of bacteria, microorganisms, organic matter, and inorganic matter in the raw water, directly measuring the minimum disinfectant consumption for the raw water. This invention directly quantifies the disinfectant dosage, allowing water treatment personnel to add disinfectant directly based on the chlorine demand measurement value, making it more accurate and reliable than the methods described above.

[0032] 2. Previously, the method of adding disinfectant based on certain raw water pollutant indicators and personnel experience could lead to over- or under-dosing of disinfectant. If adjustments to the initial disinfectant dosage were needed, they could only be made based on the data from online residual chlorine / total chlorine meters in the production process. This method suffers from delayed feedback; raw water from the same section often takes several hours to reach the online residual chlorine / total chlorine meters in the production process. Although manual sampling and testing of residual chlorine / total chlorine by water treatment personnel before the process water reaches the online residual chlorine / total chlorine meters can be performed...

[0033] The total chlorine content is adjusted to control the disinfectant dosage, but this approach has several drawbacks, including increased water production risks, increased workload for water production personnel, and impact on the content of disinfection byproducts in the water. The automatic chlorine demand measurement device of this invention can predict the minimum disinfectant dosage required for raw water to enter the plant, reducing fluctuations in the residual chlorine / total chlorine ratio during the production process. This further mitigates water production risks, reduces the workload of water production personnel, and improves the content of disinfection byproducts in the water.

[0034] 3. This device and system define the chlorine requirement index for chlorine disinfection processes in the tap water industry. Through this device and system, the chlorine requirement index of water bodies can be quantitatively measured, enabling precise quantitative initial addition of chlorine disinfectant during the tap water production control process.

[0035] 4. By setting up a reaction tank, the raw water and the drug can be reacted, and the residual chlorine data can be easily detected after the reaction is completed;

[0036] 5. By installing a water quality testing instrument, residual chlorine data can be measured in the reacted water. Based on this data, the required chlorine level can be determined, facilitating adjustments to the disinfectant dosage at the water plant. 6. By installing a fixed-volume water tank, a fixed quantity of raw water can be stored, ensuring consistent raw water usage each time.

[0037] It facilitates data processing;

[0038] 7. By setting a first overflow port, any extra raw water added can be discharged from the first overflow port, ensuring that the amount of water in the constant volume water tank is the same;

[0039] 8. By setting up a reagent volume control device, it is possible to ensure that the amount of reagent added each time is the same, which facilitates data processing after the reaction;

[0040] 9. By setting three overflow outlets for the chemical reagents, with different heights for the three overflow outlets, the system can adapt to different raw water quality conditions by adjusting the opening and closing status of the three overflow outlets;

[0041] 10. By setting up a medicine storage tank, medicines can be stored, making it convenient to add medicines through a medicine volume control device;

[0042] 11. By installing a peristaltic pump, water in the reaction tank can be pumped into a water quality analyzer for testing, facilitating the collection and detection of residual chlorine data. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the automatic chlorine demand measuring device of this utility model.

[0045] In the above attached figures, the meanings of each mark are as follows: 1-reaction tank, 2-water quality analyzer, 3-volume tank, 4-first overflow port, 5-chemical volume control device, 6-chemical overflow port, 7-chemical storage tank, 8-threaded dosing port, 9-peristaltic pump, 10-solenoid valve. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.

[0047] Example 1

[0048] The technical solution adopted in this embodiment is as follows:

[0049] like Figure 1 As shown, an online automatic chlorine demand determination device and system includes a reaction tank 1, which is used for the reaction of raw water and drugs. The reaction tank 1 is connected to a water quality analyzer 2, which is used to detect residual chlorine data.

[0050] Working principle: First, raw water and chemicals are placed in reaction tank 1 to react. After the reaction is complete, the water is discharged into water quality analyzer 2 for residual chlorine data detection. After the detection is completed, the required chlorine amount is calculated based on the data. Then, the dosage of disinfectant in the water plant is adjusted. After calculating the required chlorine amount, reaction tank 1 is cleaned once. After cleaning, the next test is performed. By setting up reaction tank 1, raw water and chemicals can react, and after the reaction, it is convenient to detect residual chlorine data. By setting up water quality analyzer 2, residual chlorine data can be detected in the water after the reaction.

[0051] Example 2

[0052] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 1, the following improvement is disclosed: the device is connected to a controller, and the reaction water tank 1 is connected to a constant volume water tank 3.

[0053] By setting up a fixed-volume water tank 3, a fixed amount of raw water can be stored, ensuring that the amount of raw water used each time is the same, which facilitates data processing.

[0054] After obtaining the chlorine requirement data based on the residual chlorine data through the controller, it is easier to guide the water plant to adjust the amount of disinfectant added.

[0055] Example 3

[0056] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 2, the following improvement is disclosed: a first overflow port 4 is provided on the upper part of the constant volume water tank 3.

[0057] By setting the first overflow port 4, any extra raw water added can be discharged from the first overflow port 4, ensuring that the amount of water in the constant volume water tank 3 is the same.

[0058] Example 4

[0059] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 2, the following improvement is disclosed: the inlet of the constant volume water tank 3 is equipped with a solenoid valve 10.

[0060] By setting solenoid valve 10 and controlling the opening and closing time of the solenoid valve, the water tank is ensured to be filled with raw water, and after the volume is reached, the raw water is prevented from continuing to enter the water tank.

[0061] Example 5

[0062] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 1, the following improvement is disclosed: the reaction tank 1 is connected to a reagent volume adjustment device 5.

[0063] By setting up the reagent volume control device 5, it is possible to ensure that the amount of reagent added each time is the same, which facilitates data processing after the reaction.

[0064] Example 6

[0065] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 5, the following improvement is disclosed: the pharmaceutical volume control device 5 is provided with three pharmaceutical overflow ports 6 of different heights.

[0066] By setting three overflow ports 6 for chemicals, with different heights for the three overflow ports 6, the system can adapt to different raw water quality conditions by adjusting the opening and closing status of the three overflow ports.

[0067] Example 7

[0068] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 5, the following improvement is disclosed: the inlet of the drug volume control device 5 is equipped with a solenoid valve 10.

[0069] By setting up solenoid valve 10 and controlling its opening and closing time, the reagent volume-fixing device is ensured to be filled with reagent, and after the volume-fixing is completed, the reagent is prevented from continuing to enter the reagent volume-fixing device.

[0070] Example 8

[0071] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 7, the following improvement is disclosed: the drug volume control device 5 is connected to a drug storage tank 7, and the drug storage tank 7 is provided with a threaded drug filling port 8.

[0072] By setting up a medicine storage tank 7, medicines can be stored, making it convenient to add medicines through the medicine volume control device 5.

[0073] Because the reagent is easily affected by external factors and deteriorates, a threaded dosing port 8 is set up to reduce the impact of the external environment on it, thereby slowing down the rate of deterioration of the experimental reagent and reducing its impact on the results.

[0074] Example 9

[0075] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 8, the following improvement is disclosed: a peristaltic pump 9 is provided between the reaction tank 1 and the water quality analyzer 2.

[0076] By setting up a peristaltic pump 9, water in the reaction tank 1 can be pumped into the water quality analyzer 2 for testing, which facilitates the detection and collection of residual chlorine data.

[0077] Example 10

[0078] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 9, the following improvement is disclosed: both the solenoid valve 10 and the peristaltic pump 9 are connected to the controller.

[0079] By setting a controller, the device can be controlled to operate automatically.

[0080] Example 11

[0081] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 10, the following improvement is disclosed: the controller is connected to a display, and the display has a human-computer interaction interface.

[0082] Through the human-machine interface, the operating status of the online automatic chlorine demand measuring device, the chlorine demand measurement results, and the switching between manual and automatic modes can be displayed in real time.

[0083] The controller controls the opening and closing time of the solenoid valve 10 and the volume-fixing device 5 of the reagent tank 3 to fix the volume of raw water and reagent, ensuring that the volume of raw water and reagent participating in the experiment is determined. Then, a certain volume of raw water and reagent are put into the reaction tank 1 for reaction. After the reaction is completed (contact time between raw water and reagent ≥ 40 min), the peristaltic pump 9 is controlled to discharge water into the online residual chlorine detector 2 for residual chlorine data detection. The obtained residual chlorine data is used to calculate the required chlorine amount and is reflected in real time on the human-machine interface.

[0084] Example 12

[0085] This embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1 As shown, based on embodiment 8, the following improvement is disclosed: the device is installed at the front end of the water distribution well (pre-sedimentation tank) of the water plant.

[0086] The above are the embodiments listed in this example. However, this example is not limited to the optional embodiments described above. Those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments. Anyone can derive other various forms of embodiments based on the inspiration of this example. The above specific embodiments should not be construed as limiting the scope of protection of this example. The scope of protection of this example should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. An online automatic chlorine demand determination device, characterized in that: It includes a reaction tank (1) for reacting raw water and drugs, and a water quality analyzer (2) connected to the reaction tank (1) for detecting residual chlorine data.

2. The online automatic chlorine demand measuring device according to claim 1, characterized in that: The reaction tank (1) is connected to a constant volume water tank (3).

3. The online automatic chlorine demand measuring device according to claim 2, characterized in that: The fixed-volume water tank (3) is provided with a first overflow port (4) at the top.

4. The online automatic chlorine demand measuring device according to claim 1, characterized in that: The reaction tank (1) is connected to a reagent volume adjustment device (5).

5. The online automatic chlorine demand measuring device according to claim 4, characterized in that: The drug volume control device (5) is provided with multiple drug overflow ports (6).

6. The online automatic chlorine demand measuring device according to claim 5, characterized in that: The drug volume control device (5) is provided with three drug overflow ports (6) at different heights.

7. The online automatic chlorine demand measuring device according to claim 4, characterized in that: The pharmaceutical volume control device (5) is connected to a pharmaceutical storage tank (7).

8. The online automatic chlorine demand measuring device according to claim 1, characterized in that: A peristaltic pump (9) is installed between the reaction tank (1) and the water quality analyzer (2).

9. An online automatic chlorine demand determination device according to any one of claims 1-8, characterized in that: The device is connected to a controller and a display.

10. An automatic chlorine demand determination system, characterized in that: The device comprises an online automatic chlorine demand determination device as described in any one of claims 1-9.

Images