DM waste treatment equipment

Abstract

The utility model discloses DM waste treatment equipment, and relates to the technical field of chemical wastewater treatment. The DM waste treatment equipment comprises a filter pressing device, a water storage tank and a reaction kettle; the filter pressing device comprises a filter chamber composed of a filter plate and a filter frame, the filter chamber is used for placing DM waste, and the filter pressing device is provided with a water inlet and a water outlet; the water storage tank is provided with a first water outlet and a water return port, the first water outlet is communicated with the water inlet through a water inlet pipe, and the water return port is communicated with the water outlet through a water outlet pipe; a reaction cavity is formed in the reaction kettle, and the reaction kettle is provided with a feeding hole and a discharging hole which are communicated with the reaction cavity; according to the DM waste material treatment equipment provided by the utility model, the DM waste material is circularly flushed by water flow, the pH value of the DM waste material is adjusted, and then the DM waste material is input into the reaction kettle for heating and cracking, so that the DM waste material is converted into a resin material, the reutilization of dangerous waste materials is realized, and the pollution to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical wastewater treatment, in particular to DM waste treatment equipment. Background Art

[0002] During the pretreatment of DM (benzothiazole) wastewater, particularly during the acidification process to a pH of 3-4, a waste product is generated. This waste product is highly complex in composition and exhibits a strongly acidic pH, making it classified as hazardous waste and requiring strict treatment measures. Currently, the most common treatment for this hazardous waste is incineration in an incinerator.

[0003] However, due to the inherently strong acidity of DM waste, its pH must be adjusted before it is fed into the incinerator. This is typically achieved by adding lime to prevent the acidity from causing equipment corrosion or safety hazards during incineration. However, incineration remains costly. The incineration process not only produces a large amount of solid slag, but its cleanup is tedious and time-consuming, increasing the difficulty and cost of disposal.

[0004] Incineration also presents the problem of flue gas emissions. To ensure that flue gas emissions meet environmental standards, the flue gas produced after incineration must be purified. This step also requires significant financial and technical support, further increasing overall treatment costs. Utility Model Content

[0005] In view of this, the purpose of the present invention is to overcome the deficiencies in the related art, and the present invention provides a DM waste processing device.

[0006] The utility model provides the following technical solutions:

[0007] A DM waste treatment device comprises a filter press, a water storage tank and a reactor.

[0008] The filter press device includes a filter chamber composed of a filter plate and a filter frame, the filter chamber is used to place DM waste, the filter press device is provided with a water inlet and a water outlet, and a drop hopper is provided below the filter chamber; the water storage tank is provided with a first drain port and a return water port, the first drain port is connected to the water inlet through an inlet pipe, and the return water port is connected to the water outlet through an outlet pipe; a reaction chamber is provided in the reactor, the reactor has a feed port and a discharge port connected to the reaction chamber, the feed port is connected to the drop hopper through a discharge pipe, and the discharge port is located at the bottom of the reactor, and the reactor is used to heat the reaction chamber.

[0009] As a further improvement of the above technical solution, the first drain outlet is arranged on the side wall of the water storage tank.

[0010] As a further improvement of the above technical solution, a second drain outlet is provided at the bottom of the water storage tank, and the second drain outlet is connected to the water inlet through a water inlet pipe.

[0011] As a further improvement of the above technical solution, the water storage tank has a conical bottom, the second drain outlet is located at the lowest end of the conical bottom, and control valves are correspondingly provided between the first drain outlet, the second drain outlet and the water inlet pipe.

[0012] As a further improvement of the above technical solution, the reactor is provided with a stirring assembly, which is used to stir the waste in the reaction chamber.

[0013] As a further improvement of the above technical solution, the stirring assembly includes a stirring shaft and a stirring motor. The stirring shaft is vertically inserted into the reaction chamber, and the stirring motor is arranged on the reactor. The stirring motor is matched with the stirring shaft in transmission. Stirring rods are evenly distributed on the side walls of the stirring shaft. A side scraper is provided at the end of the stirring rod away from the stirring shaft, and the scraping edge of the side scraper away from the stirring shaft is parallel to the inner wall of the reaction chamber.

[0014] As a further improvement of the above technical solution, the discharge port is located at the bottom of the reactor, and the end of the stirring shaft close to the discharge port is connected to a bottom scraper through a connecting rod, and the scraping edge shape of the bottom scraper close to the bottom wall of the reaction chamber is set corresponding to the shape of the bottom wall of the reaction chamber.

[0015] As a further improvement of the above technical solution, the side scraper and the bottom scraper are both equipped with PTFE blades.

[0016] As a further improvement of the above technical solution, the water storage tank is used to store triple-effect evaporation water generated by the DM wastewater during the triple-effect evaporation process.

[0017] As a further improvement of the above technical solution, the heating temperature of the reaction chamber in the reactor is 200 to 220 degrees Celsius.

[0018] As a further improvement of the above technical solution, a circulation pump is provided on the water inlet pipe.

[0019] As a further improvement of the above technical solution, a one-way valve is provided on the water inlet pipe.

[0020] Compared with the related art, the beneficial effects of the present invention are:

[0021] When efficient and environmentally friendly DM waste treatment is required, the DM waste treatment equipment provided by this utility model first feeds the DM waste into the filter chamber of a filter press. Clean water from the water storage tank then flows through the first outlet of the water storage tank, the water inlet pipe, and finally into the water inlet of the filter press, where it is then fed into the filter chamber. During this process, after flushing the DM waste, the water in the filter chamber follows a predetermined path, passing through the water outlet and water outlet pipe of the filter press, and then returning to the water storage tank through the return port of the water storage tank, forming a complete circulating flushing system.

[0022] By continuously circulating water through the DM waste within the filter chamber, impurities are effectively removed and the pH of the waste is precisely adjusted. Once the pH of the DM waste reaches the required level for subsequent treatment, the filter press discharges it into the discharge hopper. From there, the DM waste passes through the discharge pipe and is precisely introduced into the reactor chamber through the reactor inlet.

[0023] Inside the reaction chamber, the reactor fully utilizes its heating capacity to heat and crack the DM waste. During this process, the high temperature gradually transforms the DM waste into resin, thus enabling the reuse of hazardous waste. This innovative treatment method not only significantly reduces environmental pollution but also effectively lowers the cost of DM waste disposal.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a DM waste treatment device according to one embodiment of the present invention is shown;

[0027] Figure 2 A schematic structural diagram of a reactor from one perspective in one embodiment of the present invention is shown.

[0028] Description of main component symbols:

[0029] 100-filter press; 101-filter chamber; 110-water inlet; 120-water outlet; 130-hopper; 200-water storage tank; 210-first drain outlet; 220-return water outlet; 230-water inlet pipe; 231-circulating pump; 232-check valve; 240-water outlet pipe; 250-second drain outlet; 251-control valve; 300-reactor; 301-reaction chamber; 310-feed port; 311-discharge pipe; 320-discharge port; 330-stirring assembly; 331-stirring shaft; 332-stirring motor; 333-stirring rod; 334-side scraper; 335-bottom scraper. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] like Figure 1 As shown, this embodiment provides a DM waste treatment device, including a filter press 100, a water storage tank 200, and a reactor 300.

[0036] The filter press device 100 includes a filter chamber 101 composed of a filter plate and a filter frame. The filter chamber 101 is used to place DM waste. The filter press device 100 is provided with a water inlet 110 and a water outlet 120. A drop hopper 130 is provided below the filter chamber 101. The water storage tank 200 is provided with a first drain port 210 and a return port 220. The first drain port 210 is connected to the water inlet 110 through a water inlet pipe 230, and the return port 220 is connected to the water outlet 120 through a water outlet pipe 240. Specifically, the filter chamber 10 1 is further provided with a water collecting trough below, the water outlet 120 is provided on the side wall of the water collecting trough, and the setting height of the water outlet 120 is higher than the setting height of the return water port 220; a reaction chamber 301 is provided in the reactor 300, and the reactor 300 has a feed port 310 and a discharge port 320 connected to the reaction chamber 301, the feed port 310 is connected to the hopper 130 through a discharge pipe 311, and the discharge port 320 is located at the bottom of the reactor 300, and the reactor 300 is used to heat the reaction chamber 301.

[0037] When DM waste is to be processed in the DM waste treatment equipment provided in this embodiment, the DM waste is first fed into the filter chamber 101 of the filter press apparatus 100. Clean water from the water storage tank 200 then flows sequentially through the first drain port 210 of the water storage tank 200, the water inlet pipe 230, and finally into the water inlet 110 of the filter press apparatus 100, where it is then fed into the filter chamber 101. During this process, after flushing the DM waste, the water in the filter chamber 101 flows out of the filter chamber 100 along a predetermined path, into the sump, through the water outlet 120, into the water outlet pipe 240, and then back into the water storage tank 200 through the return port 220 of the water storage tank 200, forming a complete circulating flushing system.

[0038] By continuously circulating water through the DM waste within the filter chamber 101, impurities are effectively removed and the pH of the DM waste is precisely adjusted. Once the pH of the DM waste reaches the required level for subsequent processing, the filter press 100 discharges it into the hopper 130. At this point, the DM waste further passes through the discharge pipe 311 and is precisely introduced into the reaction chamber 301 through the feed port 310 of the reactor 300.

[0039] Within reaction chamber 301, reactor 300 fully utilizes its heating function to heat and crack the DM waste within the chamber. Specifically, during the cracking process, the DM waste gradually transforms from a brownish-yellow solid into a black, viscous liquid. Complete cracking takes approximately five hours, and the cracked material is discharged through discharge port 320 of reactor 300. This process gradually transforms the DM waste into a resin material under the influence of high temperature, thus achieving the reuse of hazardous waste.

[0040] In some specific embodiments, the first drain port 210 is disposed on the sidewall of the water storage tank 200. This design is primarily intended to effectively prevent the DM waste within the filter chamber 101 from being erroneously introduced into the circulation system during the flushing process. This design significantly ensures the thoroughness and efficiency of the flushing process, preventing any impurities that could affect water quality or system efficiency from being reintroduced into the circulation, thereby ensuring the stability and reliability of the entire treatment process.

[0041] In some specific embodiments, the bottom of the water storage tank 200 is provided with a second drain port 250, which is connected to the water inlet 110 via a water inlet pipe 230. After flushing the previous batch of DM waste from the filter chamber 101 and before preparing to flush a new batch of DM waste from the filter chamber 101, the operator can first open the second drain port 250 and simultaneously close the first drain port 210 for a certain period of time. During this period, the second drain port 250 allows the filtered material deposited at the bottom of the water storage tank 200 to be effectively discharged with the water flow. This process essentially performs a self-flushing of the water storage tank 200, helping to draw accumulated impurities and dirt into the filter tank along with the water flow.

[0042] After the self-flushing process is complete, the operator immediately closes the second drain port 250 and reopens the first drain port 210. The system then enters the formal cyclic flushing phase for the DM waste within the filter tank. This consistent operational flow not only ensures the regular flushing of the water tank 200 but also successfully prevents the accumulation of impurities and dirt within the water tank 200 due to prolonged operation. This ensures that the water tank 200 remains in good working condition, providing a strong guarantee for the smooth operation of the entire system.

[0043] In some specific embodiments, the water tank 200 has a conical bottom, and the second drain outlet 250 is located at the lowest end of the conical bottom. The shape of the conical bottom is such that when water or sediment enters the water tank 200, due to the effect of gravity, they will naturally slide down the conical slope and eventually converge at the lowest end of the conical bottom. When the water tank 200 is self-cleaning, the filtered matter deposited at the lowest end of the conical bottom can be quickly and smoothly discharged through the second drain outlet 250 along with the water flow, effectively avoiding the problems of blockage and residue, and ensuring the cleanliness and operating efficiency of the water tank 200. A control valve 251 is correspondingly provided between the first drain outlet 210, the second drain outlet 250 and the water inlet pipe 230. Both control valves 251 are externally connected to a control module. This design makes the control of the drain outlet no longer limited to traditional manual operation, but can be achieved through remote control or automatic control. This control method not only greatly improves the convenience and flexibility of operation.

[0044] like Figure 2 As shown, in some specific embodiments, the reactor 300 is provided with a stirring assembly 330, and the stirring assembly 330 is used to stir the waste in the reaction chamber 301 to ensure that each part of the waste can be evenly heated, thereby accelerating the process of the cracking reaction.

[0045] In some specific embodiments, the stirring assembly 330 includes a stirring shaft 331 and a stirring motor 332. The stirring shaft 331 is vertically inserted into the reaction chamber 301, and the stirring motor 332 is arranged on the reactor 300. The stirring motor 332 is in transmission cooperation with the stirring shaft 331. Stirring rods 333 are evenly distributed on the side walls of the stirring shaft 331. These stirring rods 333, driven by the stirring shaft 331, can perform complex motion trajectories in the reaction chamber 301, effectively turning and mixing the waste. The end of the stirring rod 333 away from the stirring shaft 331 is provided with a side scraper 334. The scraping edge of the side scraper 334 away from the stirring shaft 331 is parallel to the inner wall of the reaction chamber 301, so that it can fit closely to the chamber wall during the stirring process and scrape off the waste attached to it. Through such a design, when the stirring component 330 stirs the DM waste in the reaction chamber 301, it can not only achieve uniform mixing of the waste, but also completely scrape off the waste on the inner wall of the reaction chamber 301 through the action of the side scraper 334, thereby avoiding the waste of waste and the problem of insufficient reaction.

[0046] In some specific embodiments, the discharge port 320 is located at the bottom of the reactor 300, and the end of the stirring shaft 331 near the discharge port 320 is connected by a connecting rod to provide a bottom scraper 335. The scraping edge shape of the bottom scraper 335 near the bottom wall of the reaction chamber 301 is set to correspond to the shape of the bottom wall of the reaction chamber 301, so that the stirring component 330 can continuously scrape off the waste attached to the bottom wall of the reaction chamber 301 during the stirring process of the DM waste, thereby avoiding the cracking material from sticking to the wall at the bottom of the reaction chamber 301 when it needs to be discharged, thereby affecting the discharge.

[0047] In some more specific and detailed embodiments, to improve the performance and durability of the side scrapers 334 and bottom scrapers 335, PTFE blades are installed in their scraping areas. PTFE, also known as polytetrafluoroethylene (PTFE), is a material with excellent chemical stability and wear resistance, maintaining excellent performance in high temperatures, high pressures, and various corrosive environments.

[0048] The installation of a PTFE blade on the side scraper 334 effectively enhances the scraping effect of the side scraper 334 on the inner wall of the reaction chamber 301. Because the PTFE blade has a low coefficient of friction and high hardness, it can easily scrape away waste material adhering to the chamber wall, while also reducing wear on the chamber wall and extending the service life of the reactor 300.

[0049] Similarly, bottom scraper 335 is equipped with a PTFE blade to ensure that bottom scraper 335 thoroughly and effectively scrapes waste material from the bottom of reaction chamber 301. The wear resistance and corrosion resistance of the PTFE blade enable bottom scraper 335 to maintain a stable scraping effect during long-term operation, avoiding waste residue and accumulation, and ensuring the thoroughness and uniformity of the reaction.

[0050] In some more specific and advanced embodiments, the water storage tank 200 is specifically designed to store triple-effect evaporation water produced during the triple-effect evaporation process of DM wastewater. This step is a critical step in the wastewater treatment process, aiming to effectively utilize resources and optimize treatment efficiency. As a product of the evaporation process, triple-effect evaporation water typically maintains a pH of around 8, exhibiting a weakly alkaline characteristic.

[0051] At the same time, DM waste is highly acidic, posing a challenge for direct treatment and discharge. To effectively neutralize the acidity of DM waste, we have innovatively proposed a circulating flushing method using triple-effect evaporation water. This method not only cleverly utilizes the weak alkalinity of the distilled water but also significantly improves treatment efficiency through the circulating flushing process. Specifically, triple-effect evaporation water is introduced into the flushing system, where the DM waste is circulated and flushed for a continuous hour. During this process, the weak alkalinity of the distilled water neutralizes the strong acidity of the waste, gradually lowering the pH value of the DM waste to the ideal range of 6-7, thus achieving the desired neutralization effect.

[0052] It's worth noting that after the triple-effect evaporator completes its flushing task, its pH value also decreases due to a neutralization reaction with the acidic waste. However, this change does not adversely affect subsequent treatment. On the contrary, because the water has been effectively utilized and its pH has dropped, it is no longer strongly alkaline, allowing it to be discharged directly without requiring additional treatment steps. This design not only simplifies the treatment process but also reduces treatment costs, achieving efficient resource utilization and environmental protection.

[0053] In some specific embodiments, the reactor 300 heats the reaction chamber 301 to a temperature of 200 to 220 degrees Celsius. Specifically, setting the heating temperature above 200 degrees Celsius ensures that the reactant molecules receive sufficient energy, thereby accelerating the rate of the chemical reaction. At the same time, the upper limit of the temperature is controlled below 220 degrees Celsius to prevent excessively high temperatures from causing reactant decomposition or the production of byproducts, which could affect the reaction selectivity and product purity.

[0054] Within this temperature range, Reactor 300 can efficiently catalyze the cracking reaction of DM waste, converting it into more valuable products. Furthermore, precise temperature control can reduce energy consumption, extend equipment life, and improve overall production efficiency and economic benefits.

[0055] In some specific embodiments, a circulation pump 231 is provided on the water inlet pipe 230 to increase the circulation and flushing speed of the DM waste in the filter chamber 101 .

[0056] In some specific embodiments, a one-way valve 232 is provided on the water inlet pipe 230 to prevent the water in the water inlet pipe 230 from flowing back, thereby ensuring reliable flushing of the DM waste.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A DM waste processing equipment, characterized in that: include: A filter press device (100), the filter press device (100) comprising a filter chamber (101) consisting of a filter plate and a filter frame, the filter chamber (101) being used to place DM waste, the filter press device (100) being provided with a water inlet (110) and a water outlet (120), and a drop hopper (130) being provided below the filter chamber (101); A water storage tank (200), wherein the water storage tank (200) is provided with a first drain port (210) and a water return port (220), wherein the first drain port (210) is connected to the water inlet (110) via a water inlet pipe (230), and the water return port (220) is connected to the water outlet (120) via a water outlet pipe (240); A reactor (300) is provided with a reaction chamber (301) therein, the reactor (300) having a feed port (310) and a discharge port (320) in communication with the reaction chamber (301), the feed port (310) being in communication with the hopper (130) via a discharge pipe (311), the discharge port (320) being located at the bottom of the reactor (300), and the reactor (300) being used for heating the reaction chamber (301).

2. The DM waste treatment equipment according to claim 1, characterized in that: The first drain port (210) is provided on a side wall of the water storage tank (200).

3. The DM waste treatment equipment according to claim 2, characterized in that: A second drain outlet (250) is provided at the bottom of the water storage tank (200), and the second drain outlet (250) is communicated with the water inlet (110) through a water inlet pipe (230).

4. The DM waste treatment equipment according to claim 3, characterized in that: The water storage tank (200) has a conical bottom, the second drain outlet (250) is located at the lowest end of the conical bottom, and control valves (251) are correspondingly provided between the first drain outlet (210), the second drain outlet (250) and the water inlet pipe (230).

5. The DM waste treatment equipment according to claim 1, characterized in that: The reactor (300) is provided with a stirring assembly (330), and the stirring assembly (330) is used to stir the waste material in the reaction chamber (301).

6. The DM waste treatment equipment according to claim 5, characterized in that: The stirring assembly (330) includes a stirring shaft (331) and a stirring motor (332), wherein the stirring shaft (331) is vertically inserted into the reaction chamber (301), and the stirring motor (332) is arranged on the reactor (300), and the stirring motor (332) is in transmission cooperation with the stirring shaft (331); stirring rods (333) are evenly distributed on the side wall of the stirring shaft (331); a side scraper (334) is provided at the end of the stirring rod (333) away from the stirring shaft (331), and the scraping edge of the side scraper (334) away from the stirring shaft (331) is parallel to the inner wall of the reaction chamber (301).

7. The DM waste treatment equipment according to claim 6, characterized in that: The discharge port (320) is located at the bottom of the reactor (300), and the end of the stirring shaft (331) close to the discharge port (320) is connected to a bottom scraper (335) via a connecting rod. The scraping edge of the bottom scraper (335) close to the inner bottom wall of the reaction chamber (301) is arranged to correspond to the shape of the inner bottom wall of the reaction chamber (301).

8. The DM waste treatment equipment according to any one of claims 1 to 7, characterized in that: The water storage tank (200) is used to store triple-effect evaporated water generated by the triple-effect evaporation process of DM wastewater.

9. The DM waste treatment equipment according to any one of claims 1 to 7, characterized in that: The reactor (300) heats the reaction chamber (301) to a temperature of 200 to 220 degrees Celsius.

10. The DM waste treatment equipment according to any one of claims 1 to 7, characterized in that: A circulation pump (231) is provided on the water inlet pipe (230).

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