A device for separating and enriching dissolved organic matter in fresh water

Abstract

The present application relates to the technical field of organic matter extraction, in particular to a dissolved organic matter resin separation and enrichment device in fresh water, which comprises: an adsorption column, which is used for adsorbing dissolved organic matter in fresh water; a water inlet pipe, which is arranged above the adsorption column; an electromagnetic throttle valve, which is installed on the water inlet pipe; a water outlet pipe, which is installed below the adsorption column and is aligned with the water inlet pipe; and a detection device, which is arranged on the water outlet pipe and is used for detecting the use condition of the resin in the adsorption column so as to adjust the subsequent system. Compared with the existing dissolved organic matter separation and enrichment device in fresh water, the detection device is installed, two PH sensors of the detection device are used to detect the PH values before and after the organic matter separation and enrichment of fresh water, so as to determine whether the resin is saturated, whether the resin needs to be replaced, and whether the production process is wasted.

Description

Technical Field

[0001] This invention relates to the field of organic matter extraction technology, specifically to a device for separating and enriching soluble organic resins in fresh water. Background Technology

[0002] Dissolved organic matter, also known as water-soluble organic matter, mainly includes acidic substances such as humic acid and fulvic acid, as well as small molecules such as polypeptides, polysaccharides, and amino acids in freshwater. Polypeptides, polysaccharides, and amino acids are present in relatively small amounts and are easily decomposed by microorganisms, while acidic substances such as humic acid and fulvic acid have large molecular weights and are difficult to decompose. Humic acid and fulvic acid are important regulators affecting the color, taste, and pH of water bodies. Research on dissolved organic matter in freshwater also has significant implications for environmental science.

[0003] Chinese invention patent (application number: CN201610920648.X, title: A device for extracting organic matter from freshwater using reverse osmosis and resin) discloses a device for extracting organic matter from freshwater using reverse osmosis and resin. This invention patent, through the combined use of reverse osmosis and resin, designs a device that can simply and effectively separate and extract organic matter from freshwater, obtaining high-purity organic solids. The device also has a high degree of automation. The invention involves passing a freshwater organic matter extract of a certain concentration obtained through filtration and concentration through an adsorption column packed with resin. The adsorption column enriches and separates the organic matter in the freshwater. After each batch of material is enriched and separated, the resin is washed with a specific solution to release the adsorption of organic matter. Finally, the solution and organic matter are evaporated and separated to obtain high-purity organic solids.

[0004] However, this equipment operates automatically, and its method of desorbing and regenerating the resin after enriching a batch of extract has drawbacks. If there is too much extract, and the organic matter content in the extract exceeds the resin's adsorption limit, the resin will be saturated. However, the extract remains and continues to flow through the adsorption column, causing the loss of organic matter in the extract. Furthermore, the organic matter will flow into the water from which it has already been separated, changing the concentration of organic matter. It will then need to undergo another concentration and extraction to be re-enriched and separated, resulting in energy waste. Moreover, since resin regeneration requires 2-6 hours of processing, when the extract is small, the resin is far from saturated. If the resin is desorbed and regenerated at this time, the resin will not be fully utilized, leading to increased time and regeneration costs.

[0005] To address this issue, a device for separating and enriching dissolved organic resins in fresh water is proposed, which solves the problem of subsequent operation steps caused by the inability to accurately control the resin usage status in existing technologies. Summary of the Invention

[0006] The purpose of this invention is to provide a resin separation and enrichment device for dissolved organic matter in fresh water. By setting up a device that can detect the resin in the adsorption column to determine whether the resin in the adsorption column is saturated, the device can make accurate judgments for the next step of organic matter separation and enrichment. This avoids the loss of organic matter caused by the system continuing to use the adsorption column for enrichment and separation when the resin is saturated. It also avoids the problems of wasting time, increasing regeneration frequency, and increasing regeneration costs caused by rinsing the resin out of organic matter and regenerating it before the resin in the adsorption column is saturated after enriching the material once.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A device for separating and enriching dissolved organic resins in fresh water, comprising:

[0009] An adsorption column, which is made of glass tube or other acid-resistant material, is filled with resin, which is one or more of XAD-8 resin, DAX-8 resin and XAD-7 resin. Both ends of the adsorption column are sealed with filter screens to prevent resin from flowing out of the adsorption column. The adsorption column is used to adsorb dissolved organic matter in fresh water.

[0010] The inlet pipe is made of acid-resistant material. An inlet pipe is provided above the adsorption column for conveying the filtered and concentrated extract of freshwater-soluble organic matter to the adsorption column.

[0011] An electromagnetic throttle valve is installed on the water inlet pipe to regulate the delivery rate of the extract.

[0012] An outlet pipe is installed below the adsorption column to discharge the extract of freshwater-soluble organic matter after enrichment. The outlet pipe is aligned with the inlet pipe and is also made of the same type.

[0013] The outlet pipe is equipped with a detection device to monitor the resin usage in the adsorption column for subsequent system adjustments. This device includes two pH sensors located on the inlet and outlet pipes, with probes extending into each pipe respectively. The two pH sensors are electrically connected to the control system via wires, and also electrically connected to an electromagnetic throttling valve. A buzzer is installed on the outlet pipe and is electrically connected to the two pH sensors. The inlet pipe delivers a freshwater extract containing soluble organic matter, extracted through multiple pre-processing steps including filtering insoluble substances, removing metal ions, and adjusting pH, to the adsorption column. As the extract flows through the column, the dissolved organic matter is concentrated on the resin, separating the organic matter from the freshwater. The separated freshwater is then discharged from the outlet pipe and can be collected in a bucket or other container. The electromagnetic throttling valve controls the delivery speed of the extract. Two pH sensors detect the pH value of the extract before and after passing through the adsorption column, respectively, and compare the two pH values ​​in the system. After the resin enriches and separates the organic matter in the extract, the pH value of the extract will change. When the difference between the data detected by the two pH sensors is less than the set value, it indicates that the resin's adsorption function for the organic matter in the extract has decreased to the point where it can hardly enrich the organic matter, i.e., the resin is saturated. At this time, the system sends a signal to control the electromagnetic throttle valve to close and activates the buzzer to sound an alarm. Workers can then replace the saturated resin in time and use new activated resin to continue enriching and separating the organic matter in the extract, or the saturated resin can be washed with a specific solvent to desorb the resin, thereby separating the organic matter from the resin, and then the resin can be activated and regenerated to restore its ability to enrich organic matter before continuing to separate the organic matter in the extract. Using a detection device to detect resin saturation avoids using saturated resin for enrichment and separation of the extract after resin saturation. This prevents organic matter in the extract from being enriched by the resin and flowing into the already separated organic matter solution, causing organic matter loss or recontamination of the extracted solution. Furthermore, the concentration of organic matter in the extract changes, requiring re-concentration and extraction, resulting in wasted energy and time. Simultaneously, it improves resin utilization, ensuring that organic matter is separated from the resin only after the set saturation level is reached, and allowing for resin regeneration. This avoids the problem of premature resin replacement leading to low resin utilization, as seen with resin replacement based on production cycles. It also prevents the waste of time and resources caused by activating and regenerating the resin while it still has significant organic matter enrichment capacity.

[0014] Preferably, the outlet pipe is a transparent, acid-resistant pipe, which can be made of transparent PET material, glass, or other transparent and acid-resistant materials. A color sensor is installed on the outlet pipe to detect the color of the liquid after enrichment. The color sensor can be an FT25-RGB1-GS three-color mark sensor, and it is electrically connected to the electromagnetic throttling valve. The dissolved organic matter in fresh water is mostly fulvic acid or humic acid, both of which are black or brownish-black. A certain concentration of the extract is used as a contrast color, input into the system, and compared with the color mark by the color sensor. When the color of the extract after the organic matter separation step in the adsorption column is detected by the color sensor, and the system still displays a normal pH value, the color sensor feeds back a signal to the system, controls the electromagnetic throttling valve to close, and a buzzer sounds an alarm. The pH sensor is in direct contact with the extract, making it more sensitive to the pH value of the extract and able to accurately monitor the resin saturation. If the pH sensor malfunctions, it cannot accurately detect the pH difference of the extract before and after passing through the adsorption column. Even when the resin is saturated, the system continues to flow the extract. In this case, because the resin cannot effectively enrich and separate organic matter from the extract, the colored extract will flow through the color sensor. The color sensor will compare the color with a preset color. If the compared color matches the preset color, the color sensor immediately sends a signal back to the system, closes the electromagnetic throttle valve, and then activates a buzzer, allowing workers to address the issue promptly. Monitoring the color of the extract after organic matter enrichment and separation using a color sensor is crucial to prevent resin saturation from occurring even after a pH sensor malfunction, thus ensuring the system continues to enrich and separate organic matter from the extract and improving equipment production stability.

[0015] Alternatively, the color sensor can be replaced with a machine vision color recognition and classification device. Visual sensors can monitor the color of the extract more quickly and accurately, and can also transmit video signals to a control terminal, allowing managers to visually observe the enrichment and separation of organic matter in the extract from the control room. However, visual sensors are more expensive than color sensors.

[0016] Furthermore, the outlet pipe is connected in the middle to a temporary storage box for temporarily storing the organic extract after separation and enrichment by the adsorption column. This temporary storage box is also made of a transparent, acid-resistant material, such as the same transparent PET material as the outlet pipe. The front end of the outlet pipe connects to the bottom of the temporary storage box, and the rear end connects to the top of the temporary storage box. The color sensor is installed on the temporary storage box, horizontally aligned with the inside of the box to monitor the color of the extract. Using a small temporary storage box to temporarily store the enriched extract allows a portion of the extract to accumulate inside. The color sensor then monitors the temporary storage box, preventing the color sensor from being unable to accurately detect the color of the extract due to excessively fast flow. The presence of the temporary storage box ensures that a portion of the extract is always temporarily stored inside, facilitating color sensor monitoring and improving detection accuracy.

[0017] Preferably, a transparent baffle plate is vertically installed inside the temporary storage box, dividing the lower side of the box into two recesses for storing liquid. The baffle plate faces the outlet pipe, which delivers the enriched extract into the storage box. The color sensor faces the baffle plate, and is directly opposite the outlet pipe where the extract enters the storage box, separated by the baffle plate. When the enriched extract is delivered to the storage box by the outlet pipe, the baffle plate obstructs the water flow, slowing it down. The extract then flows into the recess behind the baffle plate. Once the recess behind the baffle plate is full, the extract gradually rises within the storage box and exits through the outlet pipe. The baffle plate creates a slower-flowing area inside the storage box, and the color sensor's detection of this area further ensures the accuracy of the detection.

[0018] Furthermore, the baffle plate is a pure white plate, and its upper side is curved towards the color sensor. The upper opening of the groove at the bottom of the temporary storage tank, isolated by the baffle plate on the side of the color sensor, is smaller than the bottom of the groove. This smaller opening further stabilizes the liquid at the color sensor detection point when the liquid flows inside the temporary storage tank. The degree to which the color sensor detects the color of the extract is limited by the liquid's transparency and ambient light conditions, making accurate detection and comparison difficult. By using white as a contrast color, changes in the color of the extract within the temporary storage tank will cause the detected color to differ from the white used as a contrast. This allows for a better assessment of resin saturation, further improving detection accuracy.

[0019] Preferably, the bottom of the temporary storage tank is provided with two drain pipes, located on opposite sides of the baffle plate. Each drain pipe is equipped with an electric valve, which can be a solenoid throttle valve, electric ball valve, electric butterfly valve, or other valve that can be driven to close or open by a current signal. Both electric valves are electrically connected to the solenoid throttle valve. Whenever the solenoid throttle valve closes, both electric valves open to drain the extract from the temporary storage tank. When the solenoid throttle valve closes, it indicates that the resin is saturated or the extract has been processed. At this point, the extract remaining in the temporary storage tank needs to be drained quickly to prevent it from accumulating inside and shortening the tank's lifespan. It also prevents the enriched extract remaining in the tank from affecting the color sensor's detection, resulting in non-real-time data. This improves the system's detection stability.

[0020] Preferably, the height of the baffle plate is 1.5 to 2 times the diameter of the outlet pipe. The bottom of the baffle plate also has 3-5 horizontally distributed small holes with a diameter of 1mm-1.5mm. The baffle plate does not need to be very high; it only needs to be detectable by the color sensor's detection port. A baffle plate with a diameter 1.5 times that of the outlet pipe is sufficient to block the extract and create a stable liquid environment behind it. This also prevents the baffle plate from being too high, causing liquid to remain in the space behind it for a long time, preventing new liquid from flowing in and thus hindering timely detection of resin saturation. The small holes allow new liquid to continuously replace the old liquid behind the baffle plate, enabling the color sensor to promptly detect the latest extract after organic matter enrichment without excessively disturbing the liquid behind the baffle plate, further improving detection stability.

[0021] Preferably, the outlet pipe is equipped with a tray that cooperates with the adsorption column. The tray is circular with a funnel-shaped bottom. The funnel-shaped tray can collect the extract flowing out of the adsorption column to the outlet pipe. The tray can also be used to place the adsorption column. A cylinder is installed on one side of the inlet pipe. The cylinder is fixed vertically downward to an external frame or equipment. The output end of the cylinder is fixedly connected to the inlet pipe. When the cylinder extends and retracts, it can drive the inlet pipe to move up and down. A circular dust cover that cooperates with the adsorption column is installed on the inlet pipe. The dust cover faces the tray. During normal operation, the circular dust cover covers the upper end of the adsorption column from above and, together with the tray, fixes the adsorption column. At the same time, the inlet pipe is connected to the dust cover and can transport the extract into the adsorption column. An automatic replacement device is installed on the side of the adsorption column to automatically replace the saturated adsorption column. The automatic replacement device is electrically connected to a detection device, and the detection device is electrically connected to the cylinder. The automatic replacement device is a robotic arm. Once the detection device detects that the resin is saturated, the robotic arm clamps the adsorption column. Then, the cylinder retracts, moving the water inlet pipe and dust cover upwards, separating the dust cover from the adsorption column. The robotic arm then removes the adsorption column and places it aside for the next step: separating the adsorbed organic matter from the resin through rinsing and regenerating the resin. Alternatively, the column can be directly placed in the processing equipment for organic matter separation and regeneration. The robotic arm then picks up an adsorption column containing fresh, regenerated resin and places it on a tray. The cylinder then extends, moving the water inlet pipe and dust cover downwards, with the dust cover covering the top of the adsorption column. This, combined with the tray, secures the column. The robotic arm then releases the column and retracts. This automatic column replacement system, working in conjunction with the detection device, eliminates the need for manual replacement, increasing the automation level of the equipment. Furthermore, the detachable adsorption column allows for quick replacement, preventing the inability to enrich and separate organic matter in the extract during resin organic matter separation and regeneration, thus improving the efficiency of freshwater organic matter separation and enrichment, and saving time and costs.

[0022] Optionally, the automatic replacement device includes a circular turntable horizontally rotatable next to the adsorption column. Multiple fixing rods (such as three, four, or five, but preferably no more than five) are welded and evenly distributed around the turntable's circumference. Each fixing rod has an adsorption column vertically fixed to it using a rubber collar. The turntable is driven to rotate by a drive device, which can be a stepper motor, servo motor, or other mechanism or device capable of driving and controlling its rotation at a specific angle. During system operation, the dust cover on the inlet pipe also covers the upper end of the adsorption column, with the cylinder extended. When the detection device detects resin saturation, the cylinder retracts, separating the dust cover from the adsorption column. The drive device then rotates the turntable clockwise or counterclockwise in a fixed direction, moving the next adsorption column to the turntable. The cylinder then moves the dust cover downwards to cover the upper end of a new adsorption column, and the electromagnetic throttle valve reopens, continuing the enrichment and separation of organic matter from the extract. The replaced adsorption columns filled with saturated resin can be equipped with a rinsing device above and a collection device below. While one adsorption column is working, the resin in the replaced column undergoes organic matter separation and resin activation and regeneration, thus achieving continuous enrichment and separation of organic matter in the extract. Compared to the robotic arm method described above, this method has lower manufacturing costs and is simpler to control. The disadvantages are that it is less flexible than a robotic arm; if the resin on each fixed rod is completely saturated but not fully activated, the enrichment and separation of organic matter from the extract cannot be performed. Installing too many adsorption columns on the turntable makes the turntable too large, increasing space requirements and demanding higher load capacity from the drive unit, thereby increasing costs. To avoid environmental pollution caused by liquid dripping from the adsorption column during rotation and replacement, a collection trough or bucket can be installed below the rotation path of the adsorption column.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. The freshwater dissolved organic matter resin separation and enrichment device of this invention, compared with existing freshwater organic matter separation and enrichment devices, is equipped with a detection device. The detection device uses two pH sensors to detect the pH value of the freshwater before and after organic matter separation and enrichment, thereby determining whether the resin is saturated and whether it still has the ability to enrich organic matter in the freshwater. If the resin is saturated, an alarm is triggered, prompting personnel to replace the resin. This avoids continuing to use the resin for organic matter enrichment and separation after it has become saturated, ultimately leading to the continuous loss of organic matter in the freshwater. Simultaneously, it avoids regenerating and reactivating the resin before it is fully utilized, thus avoiding waste of material and time costs.

[0025] 2. The freshwater soluble organic resin separation and enrichment device of the present invention is also equipped with a color sensor to detect the color of the extract after enrichment. The color sensor is used in conjunction with the pH sensor of the detection device to improve the detection accuracy and prevent the resin saturation from failing to be fed back to the system in time for processing after the pH sensor fails. At the same time, a temporary storage box and a baffle plate are used to improve the detection stability of the color detection device, thereby further improving the production stability of the entire device.

[0026] 3. The resin separation and enrichment device for dissolved organic matter in fresh water described in this invention features a detachable adsorption column, inlet pipe, outlet pipe, and adsorption column. It also includes an automatic replacement device that works in conjunction with a detection device to promptly replace the adsorption column. When the detection device detects that the resin has reached saturation and can no longer enrich and separate the organic matter in the extract, the system immediately stops the inlet pipe from delivering the extract to the adsorption column. The automatic replacement device then automatically replaces the saturated resin and the resin-loaded adsorption column. After replacement, the electromagnetic throttle valve on the inlet pipe reopens to deliver the extract to the adsorption column for organic matter enrichment and separation. This improves the automation level of the entire system and reduces manual labor. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a front view of the present invention;

[0029] Figure 3 This is a right view of the present invention;

[0030] Figure 4 This is a top view of the present invention;

[0031] Figure 5 For the present invention Figure 2 AA section view in the middle;

[0032] Figure 6 For the present invention Figure 5 Enlarged view of B in the middle;

[0033] Figure 7 For the present invention Figure 1 Enlarged view of point C in the middle;

[0034] Figure 8 For the present invention Figure 1 Enlarged view of point D in the middle;

[0035] Figure 9 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0036] In the diagram: 1. Adsorption column; 2. Inlet pipe; 3. Electromagnetic throttle valve; 4. Outlet pipe; 5. pH sensor; 6. Buzzer; 7. Color sensor; 8. Temporary storage box; 9. Baffle plate; 10. Drain pipe; 11. Electric valve; 12. Cylinder; 13. Dust cover; 14. Robotic arm; 15. Turntable; 16. Fixed rod; 17. Drive device; 18. Tray; 19. Small hole. Detailed Implementation

[0037] Example 1:

[0038] refer to Figures 1 to 8 A device for separating and enriching dissolved organic resins in fresh water includes: 1. an adsorption column; 2. an inlet pipe; 3. an electromagnetic throttle valve; 4. an outlet pipe; 5. a pH sensor; 6. a buzzer; 7. a color sensor; 8. a storage tank; 9. a baffle plate; 10. a drain pipe; 11. an electric valve; 12. a cylinder; 13. a dust cover; 15. a turntable; 16. a fixing rod; 17. a drive device; 18. a tray; and 19. a small hole.

[0039] Cylinder 12 is vertically and bolted to the external frame. Water inlet pipe 2 is fixed to the output shaft of cylinder 12 using a connecting block. A plastic dust cover 13 is glued to water inlet pipe 2. An electromagnetic throttle valve 3 is also installed on water inlet pipe 2. A tray 18, circular in shape with a funnel-shaped bottom, is bolted to the frame directly below the dust cover 13. A water outlet pipe 4 is glued to the bottom of tray 18 and connects to tray 18. A transparent glass storage box 8 is installed in the middle of water outlet pipe 4. Water outlet pipe 4 extends from the storage box 8... The lower side connects to the interior of the temporary storage box 8, and then connects to the interior of the temporary storage box 8 from the upper side opposite to it. Inside the temporary storage box 8, a pure white plastic baffle 9 is glued in place. The baffle 9 is arc-shaped and bends towards the water pipe 4 exiting from the upper side of the temporary storage box 8. Three small holes 19 with a diameter of 1mm are evenly distributed horizontally on the lower side of the baffle 9. The baffle 9 is directly opposite the interface of the water pipe 4 that connects to the temporary storage box 8 from the lower side. The height of the baffle 9 is 1.5 times the diameter of the water pipe 4. The baffle 9 divides the bottom of the temporary storage box 8 into two recesses. Two drains are installed at the bottom of the temporary storage box 8. Water pipe 10 and two drain pipes 10 are respectively connected to the bottom of the temporary storage box 8 and are located on the front and rear sides of the baffle plate 9. Each drain pipe 10 is equipped with an electric valve 11, which is an electric ball valve. Both electric valves 11 are electrically connected to the electromagnetic throttle valve 3. A color sensor 7 of model LX-111 is installed on the outside of the temporary storage box 8. The signal transmitting probe of the color sensor 7 is facing the baffle plate 9. A pH sensor 5 of model S-PH-A1X2X3 is installed on the water outlet pipe 4 located on the lower side of the temporary storage box 8. The same model is also installed on the water inlet pipe 2. The pH sensor 5 is electrically connected to the electromagnetic throttle valve 3. A buzzer 6 is also installed on the water outlet pipe 4. The turntable 15 is rotatably installed next to the turntable 15. The turntable 15 is driven by the drive device 17, which is a stepper motor. Four fixing rods 16 are welded and installed on the turntable 15. The four fixing rods 16 are evenly distributed around the turntable 15. Each fixing rod 16 has a vertically fixed adsorption column 1. The adsorption column 1 is a cylindrical tube with a through-hole. In the initial state, one adsorption column 1 is facing the dust cover 13 and the tray 18.

[0040] The specific workflow is as follows:

[0041] Before operation: First, seal the bottom of each adsorption column 1 with a filter screen. Then, fill each adsorption column 1 with resin, using one or more of XAD-8, DAX-8, and XAD-7 resins. Note that the pore size of the filter screen should be smaller than the resin size to prevent resin loss. After filling, seal the top of the adsorption column 1 with the same filter screen. Before operation, test the adsorption column 1. Pass a freshwater extract rich in organic matter, which has undergone multiple processes such as filtration, removal of metal ions, and pH adjustment, into the adsorption column 1. Use pH sensor 5 to detect the pH value of the liquid after enrichment in the adsorption column 1 and input it into the system as comparison data.

[0042] During operation: The adsorption column 1 is aligned with the dust cover 13 and tray 18. The system control cylinder 12 extends downward, driving the water inlet pipe 2 and dust cover 13 downward. The dust cover 13 covers the upper end of the adsorption column 1. Then, the system opens the electromagnetic throttle valve 3 on the water inlet pipe 2. The delivery speed of the water inlet pipe 2 can be controlled by the electromagnetic throttle valve 3, delivering the extract into the adsorption column 1 through the water inlet pipe 2. After the extract passes through the resin in the adsorption column 1 for enrichment and separation of organic matter, it flows out from the bottom of the adsorption column 1 and enters the water outlet pipe 4 through the tray 18. Then, it flows into the temporary storage tank 8 from the bottom. When the liquid volume in the temporary storage tank 8 is sufficient, it will be discharged from the water outlet pipe 4 on the upper side of the temporary storage tank 8. Before flowing into the temporary storage tank 8, the enriched extract is detected by the pH sensor 5 inserted into the water outlet pipe 4, and the detected data is compared with... The system compares the previously input comparison values ​​to ensure that the dissolved organic matter in the freshwater extract is not excessively lost. A deviation of more than 30% between the detected value and the comparison data is set as a resin saturation judgment. When the deviation between the data detected by the pH sensor 5 and the comparison data exceeds 30%, the system automatically controls the electromagnetic throttle valve 3 to close, stopping the delivery of extract into the adsorption column 1. The buzzer 6 sounds, and then the system controls the cylinder 12 to move the water inlet pipe 2 and the dust cover 13 upwards, separating the dust cover 13 from the adsorption column 1. Then, the drive device 17 drives the fixing rod 16 and the adsorption column 1 to rotate 90° clockwise. The new adsorption column 1 then aligns with the dust cover 13 and the tray 18. The cylinder 12 extends again, and the dust cover 13 covers the top of the new adsorption column 1 again. Then, the system controls the electromagnetic throttle valve 3 to open again, continuing the enrichment and separation of organic matter in the extract.

[0043] The arc-shaped baffle 9 inside the temporary storage tank 8 divides the bottom of the temporary storage tank into two areas. After the extract enters the temporary storage tank 8 from the water outlet pipe 4 on the lower side of the temporary storage tank 8, it is blocked by the baffle 9. When the liquid level of the extract entering the temporary storage tank 8 is higher than the baffle 9, it will flow into the area behind the baffle 9. The baffle 9's obstruction of the extract can keep the liquid in the area behind the baffle 9 relatively stable. The color sensor 7 will detect the area behind the baffle 9 and detect the color change of the baffle 9. When the color contrast deviation of the baffle 9 detected by the color sensor 7 exceeds 30%, it is determined that the resin is saturated. The presence of the orifice 19 allows a portion of the extract to enter the area behind the baffle plate 9 after each extraction into the temporary storage tank 8. This prevents the liquid behind the baffle plate 9 from remaining stagnant for extended periods, which could affect the real-time detection results of the color sensor 7. Furthermore, because the diameter of the orifice 19 is only 1mm, it also prevents excessive turbulence in the liquid behind the baffle plate 9, thus minimizing impact on the color sensor's detection accuracy. The color sensor 7 serves as a safeguard against a decrease in the detection accuracy of the pH sensor 5 or a malfunction that prevents it from detecting anything. If the pH sensor 5 is functioning normally, but the color sensor 7 detects and determines that the resin is saturated, it will control the electromagnetic throttle valve 3 to close and control the movement of the cylinder 12 and drive device 17 to replace the adsorption column 1. After replacement, the enrichment and separation of organic matter will resume.

[0044] Each time the electromagnetic throttle valve 3 closes, the two electric valves 11 at the bottom of the temporary storage tank 8 open to drain the liquid inside the tank, preventing the liquid in the tank from interfering with the color sensor 7's saturation determination of the new adsorption column 1. The electric valves 11 close again after the electromagnetic throttle valve 3 opens. The baffle plate 9 reduces liquid flow at the detection point during color sensor 7 detection, minimizing detection interference. If the color interference device still determines the resin is saturated ten minutes after replacing the resin in the new adsorption column 1, the system stops, and the buzzer 6 sounds continuously to alert the worker for timely maintenance.

[0045] After operation: Shut down the machine and check that all components are functioning properly. The worker removes the resin from each adsorption column 1 and collects it for rinsing and separation of the organic matter and resin using a non-polar organic solvent.

[0046] For continuous automated production, a rinsing device can be installed above the replaced adsorption column 1 to rinse the resin with a non-polar organic solvent. After adsorption column 1 is replaced, the resin and organic matter can be immediately separated and the resin activated. A collection device can be installed below adsorption column 1 to achieve continuous automated production without manual resin rinsing and activation. Finally, the rinsing liquid can be rotary evaporated, nitrogen-blown, or allowed to evaporate naturally to obtain a freshwater organic solid powder.

[0047] Example 2:

[0048] like Figure 9 Unlike Embodiment 1, the replacement of the adsorption column 1 is not performed using a combination of turntable 15, fixed rod 16, and drive device 17, but instead, a robotic arm 14 is used for gripping and replacement.

[0049] The adsorption column 1 is placed on the tray 18, and then the cylinder 12 extends to drive the dust cover 13 to cover the adsorption column 1 downward, so that the adsorption column 1 remains vertical. Then, together with the support of the tray 18, the adsorption column 1 is fixed.

[0050] When the system detects that the resin inside the adsorption column 1 is saturated and closes the electromagnetic throttle valve 3, the robot arm 14 first clamps the adsorption column 1, and then the cylinder 12 retracts upward, driving the dust cover 13 to release the adsorption column 1 upward. Then the robot arm 14 places the adsorption column 1 aside to wait for manual centralized processing or places the adsorption column 1 directly into the resin rinsing and regeneration device to separate the resin from the organic matter on the enriched resin, and then performs resin regeneration. After the robot arm 14 removes the adsorption column 1 containing saturated resin, it clamps the adsorption column 1 containing new activated resin from the side and then places it vertically on the tray 18. Then the cylinder 12 extends downward and drives the dust cover 13 to cover the adsorption column 1, thus fixing the adsorption column 1.

[0051] Both Example 1 and Example 2 can detect the saturation of the resin during the organic matter enrichment and separation process and automatically replace the resin according to the detection results. This avoids the continuous use of the resin for organic matter enrichment and separation after the resin is saturated, which would lead to a continuous loss of organic matter and waste of materials and production time. Example 1 has a simple structure and control, low equipment manufacturing and maintenance costs, and does not require frequent disassembly of the adsorption column 1, resulting in stable operation. Compared to Example 1, Example 2 is more difficult to control and more expensive, but it offers greater production flexibility. If too few adsorption columns 1 are installed in Example 1, and they are not cleaned in time after each round of use, the equipment will automatically use unactivated resin, resulting in material waste. If too many are installed, the load on the drive device 17 will increase, and the equipment will occupy a large area. In contrast, the robotic arm 14 occupies less space. It can place more adsorption columns 1 with activated resin in a designated position for the robotic arm 14 to pick up without taking up too much space. Alternatively, after the adsorption columns 1 are activated in the activation device, the robotic arm 14 can pick up the activated ones and install them on the equipment, without picking up the adsorption columns 1 with unactivated resin, resulting in higher production stability.

[0052] The above two embodiments are merely illustrative examples among the many embodiments of the present invention. Various variations can be made without departing from the principles of the present invention. Embodiments created by those skilled in the art through modifications to the present invention without creative effort are also within the scope of protection of the present invention.

Claims

1. A device for separating and enriching dissolved organic resins in fresh water, comprising: An adsorption column (1) is filled with resin and is used to adsorb dissolved organic matter in fresh water. Water inlet pipe (2), an inlet pipe (2) is provided above the adsorption column (1) for conveying the filtered and concentrated extract of fresh water-soluble organic matter to the adsorption column (1); Electromagnetic throttle valve (3), the water inlet pipe (2) is equipped with an electromagnetic throttle valve (3) for adjusting the delivery rate of the extract; The outlet pipe (4) is installed below the adsorption column (1) to discharge the extract of freshwater-soluble organic matter after enrichment. The feature is that: the water outlet pipe (4) is provided with a detection device for detecting the usage of the resin in the adsorption column (1) in order to make subsequent system adjustments; The detection device includes two pH sensors (5) installed on the inlet pipe (2) and the outlet pipe (4), the two pH sensors (5) are electrically connected to each other, and the two pH sensors (5) are electrically connected to the electromagnetic throttle valve (3). A buzzer (6) is installed on the outlet pipe (4), and the buzzer (6) is electrically connected to the two pH sensors (5). The water outlet pipe (4) is a transparent pipe. A color sensor (7) is installed on the water outlet pipe (4) to detect the color of the liquid after enrichment. The color sensor (7) is electrically connected to the electromagnetic throttle valve (3) and the buzzer (6). The outlet pipe (4) is connected in the middle to a temporary storage box (8) for temporarily storing the organic matter extract after separation and enrichment by the adsorption column (1). The temporary storage box (8) is made of transparent material. The front section of the outlet pipe (4) is connected from the lower side of the temporary storage box (8) to the inside of the temporary storage box (8), and the rear section of the outlet pipe (4) is connected from the upper side of the temporary storage box (8) to the inside of the temporary storage box (8). The color sensor (7) is installed on the temporary storage box (8). The temporary storage box (8) is vertically installed with a baffle plate (9). The baffle plate (9) is directly opposite the outlet pipe (4) to transport the enriched extract to the interface inside the temporary storage box (8). The color sensor (7) is directly opposite the baffle plate (9). The color sensor (7) and the interface of the outlet pipe (4) that transports the extract into the temporary storage box (8) are directly opposite each other and separated by the baffle plate (9).

2. The device for separating and enriching dissolved organic resins in fresh water according to claim 1, characterized in that: The baffle plate (9) is a pure white plate, and the baffle plate (9) is curved toward the color sensor (7).

3. The device for separating and enriching dissolved organic resins in fresh water according to claim 1, characterized in that: The temporary storage box (8) is provided with two drain pipes (10) at the bottom. The two drain pipes (10) are located on the front and back sides of the baffle plate (9) respectively. Both drain pipes (10) are equipped with electric valves (11), and both electric valves (11) are electrically connected to the electromagnetic throttle valve (3).

4. The device for separating and enriching dissolved organic resins in fresh water according to claim 1, characterized in that: The height of the baffle plate (9) is 1.5-2 times the diameter of the inlet pipe (2), and the bottom of the baffle plate is also provided with a small hole horizontally.

5. The device for separating and enriching dissolved organic resins in fresh water according to claim 1, characterized in that: The water outlet pipe (4) is equipped with a tray (18) that cooperates with the adsorption column (1). A cylinder (12) is installed on one side of the water inlet pipe (2). The cylinder (12) is vertically fixed to an external frame or equipment. The output end of the cylinder (12) is fixedly connected to the water inlet pipe (2). A dust cover (13) that cooperates with the adsorption column (1) is installed on the water inlet pipe (2). An automatic replacement device that can automatically replace the saturated adsorption column (1) is installed on the side of the adsorption column (1). The automatic replacement device is electrically connected to the electromagnetic throttle valve (3) and the cylinder (12). The automatic replacement device is a robotic arm (14).

6. The apparatus for separating and enriching dissolved organic resins in fresh water according to claim 5, characterized in that: The automatic replacement device includes a turntable (15) that is horizontally rotatably installed next to the adsorption column (1). Multiple fixed rods (16) are evenly distributed around the turntable (15) on its horizontal circumference. Each fixed rod (16) has an adsorption column (1) fixedly installed on it. The turntable (15) is driven to rotate by a drive device (17).

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