Organic high-salinity wastewater bypass advanced oxidation clarification liquid taking device
Patent Information
- Application Number
- CN202522515634.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0003]蒸发结晶通过蒸发浓缩使溶质过饱和，实现结晶，而后通过离心分离、过滤或沉降等方法回收晶体并处理剩余废水，现有技术中，沉降分离依赖重力作用，晶体颗粒需通过自然沉降与母液分离，对于小粒径晶体（如微米级）或低浓度母液，沉降速度极慢，需长时间静置（可能达数小时甚至数天），导致处理效率低下
与现有技术相比，本实用新型在分离器下侧出料管上设置澄清取液罐，将废水分流进行澄清取液，同时澄清取液罐内设有阻流夹套，利用旋流、重力作用，将废水进行沉淀，结晶固体下沉，清液上浮，小颗粒结晶随着浓缩液回流入加热器中，继续加热蒸发，实现大颗粒结晶固体快速分离，有效提高废水处理效率。
Smart Images
Figure CN224812422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a bypass advanced oxidation clarification and liquid extraction device for organic high-salt wastewater. Background Technology
[0002] Evaporation crystallization is a commonly used wastewater treatment method. It refers to the process of separating the solvent from the solute in a solution by raising the temperature, ultimately causing the solute to polymerize into a solid (crystal). In wastewater treatment projects, evaporation crystallization is often used to treat high-salinity wastewater, achieving zero wastewater discharge while simultaneously recovering water resources and salts from the wastewater, ultimately achieving the goals of resource recovery, volume reduction, and harmless treatment of wastewater.
[0003] Evaporation crystallization involves evaporating and concentrating the solute to achieve supersaturation and crystallization. The crystals are then recovered and the remaining wastewater is treated by methods such as centrifugation, filtration, or sedimentation. In existing technologies, sedimentation separation relies on gravity, and the crystal particles need to be separated from the mother liquor by natural sedimentation. For small-diameter crystals (such as micron-sized particles) or low-concentration mother liquor, the sedimentation rate is extremely slow, requiring a long period of standing (which may be several hours or even days), resulting in low treatment efficiency. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bypass advanced oxidation clarification and liquid extraction device for organic high-salt wastewater.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: An advanced oxidation clarification and liquid extraction device for bypassing high-salt organic wastewater includes an evaporation and crystallization system and a bypass oxidation system. The evaporation and crystallization system includes a separator, a circulating pump, and a heater. The bypass oxidation system includes a mixer and an oxidation tank. The separator is connected to an inlet pipe and an outlet pipe. A clarification and liquid extraction tank is provided on one side of the outlet pipe. An upper connecting pipe and a lower connecting pipe are provided between the outlet pipe and the clarification and liquid extraction tank. A liquid discharge control valve is provided on the outlet pipe between the upper connecting pipe and the lower connecting pipe. A liquid extraction pipe is connected to the upper side of the clarification and liquid extraction tank. A sedimentation pipe and an outlet valve are provided at the bottom of the clarification and liquid extraction tank. A flow-blocking jacket is suspended in the middle of the inner side of the clarification and liquid extraction tank. One end of the upper connecting pipe passes through the clarification and liquid extraction tank and communicates with the inner side of the flow-blocking jacket.
[0006] Preferably, the lower end of the discharge pipe is connected to the inlet of the circulating pump, and the outlet of the circulating pump is connected to a three-way valve, which is connected to the heater and the mixer respectively.
[0007] Preferably, the upper part of the heater is connected to the separator, and the heater is provided with heat exchange tubes.
[0008] Preferably, the discharge port of the mixer is connected to the bottom of the oxidation tank, and the upper part of the oxidation tank is connected to the separator.
[0009] Preferably, the upper part of the separator and oxidation tank is connected to a steam recovery pipe, the steam recovery pipe is equipped with a compressor, the outlet of the compressor is connected to a heat exchange pipe, and the lower end of the heat exchange pipe is provided with an exhaust port.
[0010] Preferably, the flow-blocking jacket has openings at both the upper and lower ends, the upper connecting pipe is located in the tangential direction of the flow-blocking jacket, the outlet of the upper connecting pipe is located slightly above the middle of the flow-blocking jacket, and the height of the liquid inlet of the liquid taking pipe is lower than the height of the upper edge of the flow-blocking jacket.
[0011] Preferably, the top of the clarification tank is provided with an inspection port, and the upper side of the flow-blocking jacket is provided with a flow-blocking mesh cover, which is movably disposed on the inner side of the upper part of the clarification tank.
[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model sets up a clarification and liquid collection tank on the discharge pipe at the lower side of the separator to divert the wastewater for clarification and liquid collection. At the same time, the clarification and liquid collection tank is equipped with a flow-blocking jacket. By using the action of swirling flow and gravity, the wastewater is precipitated, the crystalline solids sink, and the clear liquid floats. Small crystalline particles flow back into the heater with the concentrated liquid for further heating and evaporation, thereby achieving rapid separation of large crystalline solid particles and effectively improving the wastewater treatment efficiency. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the overall assembly of an organic high-salt wastewater bypass advanced oxidation clarification and liquid extraction device proposed in this utility model. Figure 2 This is a schematic diagram of the overall assembly structure of an advanced oxidation clarification and liquid extraction device for bypassing high-salt organic wastewater proposed in this utility model (left view). Figure 3 This is a schematic diagram of the right-side cross-sectional structure of the clarification and extraction tank of the advanced oxidation clarification and extraction device for bypassing organic high-salt wastewater proposed in this utility model; Figure 4 This is a top view of the clarification tank of an advanced oxidation clarification and extraction device for bypassing organic high-salt wastewater, as proposed in this utility model.
[0014] In the diagram: 1. Separator; 11. Feed pipe; 12. Discharge pipe; 121. Upper connecting pipe; 122. Lower connecting pipe; 2. Clarification and liquid collection tank; 201. Flow-blocking jacket; 202. Flow-blocking mesh cover; 21. Liquid collection pipe; 22. Discharge valve; 221. Sedimentation pipe; 3. Circulation pump; 4. Three-way valve; 5. Heater; 6. Mixer; 7. Oxidation tank; 8. Steam recovery pipe. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0016] Reference Figure 1-4 An advanced oxidation clarification and liquid extraction device for bypassing high-salt organic wastewater includes an evaporation crystallization system and a bypass oxidation system. The evaporation crystallization system includes a separator 1, a circulating pump 3, and a heater 5. The bypass oxidation system includes a mixer 6 and an oxidation tank 7, forming two wastewater treatment systems for evaporation crystallization and oxidation decomposition. The separator 1 is connected to an inlet pipe 11 and an outlet pipe 12 for wastewater feeding and discharge. The lower end of the outlet pipe 12 is connected to the inlet of the circulating pump 3. The outlet of the circulating pump 3 is connected to a three-way valve 4. The three-way valve 4 is connected to the heater 5 and the mixer 6 respectively. Through the control of the three-way valve 4, the wastewater is selectively sent to the heater 5 or the mixer 6. The upper part of heater 5 is connected to separator 1. Heat exchange tubes are installed inside heater 5 to heat the wastewater. Finally, the wastewater flows into separator 1 from the upper part of heater 5 for evaporation and concentration, and finally crystallization. The discharge port of mixer 6 is connected to the bottom of oxidation tank 7, and the upper part of oxidation tank 7 is connected to separator 1. Mixer 6 fully mixes oxidant and wastewater. For example, oxygen is fully mixed with wastewater using a micro-nano bubble generator and sent into oxidation tank 7 for oxidation reaction to decompose organic matter in wastewater. The heat generated can be recovered and reused. The upper part of the separator 1 and the oxidation tank 7 is connected to a steam recovery pipe 8. A compressor is installed on the steam recovery pipe 8. The compressor compresses the generated steam, thereby increasing the temperature and pressure of the steam. The compressor outlet is connected to the heat exchange tube, and the compressed steam is passed into the heat exchange tube to heat the wastewater. The lower end of the heat exchange tube is provided with an exhaust port to discharge the condensate and air after the steam is cooled. A clarification and extraction tank 2 is provided on one side of the discharge pipe 12 to separate the supernatant of wastewater from the crystallized solids. An upper connecting pipe 121 and a lower connecting pipe 122 are provided between the discharge pipe 12 and the clarification and extraction tank 2. A discharge control valve is provided on the discharge pipe 12 between the upper connecting pipe 121 and the lower connecting pipe 122 to divert a portion of the wastewater in the discharge pipe 12 to the clarification and extraction tank 2, which facilitates the separation of the supernatant and the crystallized solids. A extraction pipe 21 is connected to the upper side of the clarification and extraction tank 2, through which the supernatant is discharged. A sedimentation pipe 221 and a discharge valve 22 are provided at the bottom of the clarification and extraction tank 2. The sedimentation pipe 221 is used to deposit the crystallized solids, which facilitates the discharge valve 22 to discharge the concentrate containing the crystallized solids, thus achieving discharge and facilitating further processing of the concentrate in the later stage. A flow-blocking jacket 201 is suspended in the middle of the inner side of the clarification liquid collection tank 2. The flow-blocking jacket 201 is fixed to the inner side of the clarification liquid collection tank 2 by a connecting rod or a connecting plate. The flow-blocking jacket 201 is open at the upper and lower ends. One end of the upper connecting pipe 121 passes through the clarification liquid collection tank 2 and communicates with the inner side of the flow-blocking jacket 201. The upper connecting pipe 121 is located in the tangential direction of the flow-blocking jacket 201, and the outlet of the upper connecting pipe 121 is located at the upper part of the middle of the flow-blocking jacket 201. Inside the flow-blocking jacket 201, the upper connecting pipe 121 feeds in a tangential swirling motion. Under the action of swirling motion and gravity, the heavier solids are thrown toward the inner wall of the flow-blocking jacket 201 and settle downwards, while the clear liquid overflows upwards. The height of the liquid inlet of the liquid collection pipe 21 is lower than the height of the upper edge of the flow-blocking jacket 201. The flow-blocking jacket 201 isolates the heavy solids and the light supernatant, thus achieving clear liquid collection. The top of the clarification tank 2 is equipped with an inspection port, and the upper side of the flow-blocking jacket 201 is equipped with a flow-blocking mesh cover 202. The flow-blocking mesh cover 202 is movably set on the upper inner side of the clarification tank 2. The upper clear liquid passes through the mesh of the flow-blocking mesh cover 202, reducing water fluctuations, which helps the crystallized solids to settle and the upper clear liquid to overflow smoothly.
[0017] In this embodiment, the wastewater to be treated is added to the separator 1 through the feed pipe 11. The circulating pump 3 pumps the wastewater and controls it through the three-way valve 4 to pass the wastewater into the heater 5 or the mixer 6. The heater 5 heats the wastewater and then it flows into the separator 1 for evaporation and crystallization. At the same time, part of the wastewater passes through the mixer 6 and is evenly mixed with the oxidant, and then passes into the oxidation tank 7 for oxidation reaction to decompose the organic matter in it. As the wastewater evaporates and crystallizes, salt crystals appear in the concentrate. The discharge control valve adjusts the flow area, and part of the wastewater is fed into the flow-blocking jacket 201 through the upper connecting pipe 121. The wastewater is fed in a tangential swirling motion and rotates slowly in the flow-blocking jacket 201. Solids begin to settle and separate. The lighter upper clear liquid floats to the surface and overflows from the upper edge of the flow-blocking jacket 201. The upper clear liquid is discharged through the liquid collection pipe 21. The discharge valve 22 is normally closed. Large particles of solid slowly settle in the sedimentation pipe 221. Part of the wastewater and small particles of solid flow back to the discharge pipe 12 through the lower connecting pipe 122 and are heated and evaporated again. Periodically open the discharge valve 22 to discharge the deposited salt crystals and concentrated liquid for subsequent processing and resource recovery.
[0018] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
Claims
1. A bypass advanced oxidation clarification and liquid extraction device for organic high-salt wastewater, comprising an evaporation and crystallization system and a bypass oxidation system, characterized in that, The evaporation crystallization system includes a separator (1), a circulating pump (3) and a heater (5). The bypass oxidation system includes a mixer (6) and an oxidation tank (7). The separator (1) is connected to a feed pipe (11) and a discharge pipe (12). A clarification and liquid collection tank (2) is provided on one side of the discharge pipe (12). An upper connecting pipe (121) and a lower connecting pipe (122) are provided between the discharge pipe (12) and the clarification and liquid collection tank (2). The discharge pipe (12) is provided with a liquid discharge control valve located between the upper connecting pipe (121) and the lower connecting pipe (122). The upper side of the clarification liquid collection tank (2) is connected to the liquid collection pipe (21). The bottom of the clarification liquid collection tank (2) is provided with a sedimentation pipe (221) and a discharge valve (22). The middle of the inner side of the clarification liquid collection tank (2) is provided with a flow-blocking jacket (201). One end of the upper connecting pipe (121) passes through the clarification liquid collection tank (2) and is connected to the inner side of the flow-blocking jacket (201).
2. The organic high-salt wastewater bypass advanced oxidation clarification and liquid extraction device according to claim 1, characterized in that, The lower end of the discharge pipe (12) is connected to the inlet of the circulating pump (3), and the outlet of the circulating pump (3) is connected to a three-way valve (4). The three-way valve (4) is connected to the heater (5) and the mixer (6) respectively.
3. The organic high-salt wastewater bypass advanced oxidation clarification and liquid extraction device according to claim 2, characterized in that, The upper part of the heater (5) is connected to the separator (1), and the heater (5) is provided with a heat exchange tube.
4. The advanced oxidation clarification and liquid extraction device for bypassing high-salt organic wastewater according to claim 2, characterized in that, The discharge port of the mixer (6) is connected to the bottom of the oxidation tank (7), and the upper part of the oxidation tank (7) is connected to the separator (1).
5. The organic high-salt wastewater bypass advanced oxidation clarification and liquid extraction device according to claim 3, characterized in that, The separator (1) and the oxidation tank (7) are connected to a steam recovery pipe (8) at the top. A compressor is provided on the steam recovery pipe (8). The outlet of the compressor is connected to the heat exchange pipe. An exhaust port is provided at the lower end of the heat exchange pipe.
6. The advanced oxidation clarification and liquid extraction device for bypassing high-salt organic wastewater according to claim 1, characterized in that, The flow-blocking jacket (201) has openings at the top and bottom. The upper connecting pipe (121) is located in the tangential direction of the flow-blocking jacket (201). The outlet of the upper connecting pipe (121) is located in the upper middle part of the flow-blocking jacket (201). The height of the liquid inlet of the liquid taking pipe (21) is lower than the height of the upper edge of the flow-blocking jacket (201).
7. The organic high-salt wastewater bypass advanced oxidation clarification and liquid extraction device according to claim 6, characterized in that, The top of the clarification liquid collection tank (2) is provided with an inspection port, and the upper side of the flow-blocking jacket (201) is provided with a flow-blocking mesh cover (202), which is movably set on the upper inner side of the clarification liquid collection tank (2).