A device for treating oil-containing wastewater from tertiary amine production by air flotation
Patent Information
- Application Number
- CN202522672306.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-17
AI Technical Summary
然而，目前市场上尚缺乏专门针对叔胺生产含油废水设计的微纳米气泡处理装置，无法满足该领域对高效、稳定废水处理技术的迫切需求
[0016]1、本实用新型通过微纳米气泡发生器产生大量致密微小的气泡，这些气泡与含油废水在微纳米气泡混合箱内充分混合，高效扩展了废水中油的表面积，使油类物质更容易被气泡吸附并带动上浮，从而显著提高了油水分离效率。气浮处理过程中，带气泡的水流通过溶气水分布器均匀分布在箱体内底部，气泡上浮时紧密结合废水中的油类物质，形成油沫并快速上浮至水面，经过刮渣机刮除排出，有效去除了废水中的油类物质，处理后的水质明显改善。
Smart Images
Figure CN224917550U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of oily wastewater treatment devices, and in particular relates to an air flotation treatment device for oily wastewater produced by tertiary amine production. Background Technology
[0002] The production of tertiary amines generates a large amount of process wastewater containing oily substances. This wastewater typically contains about 1% of the finished tertiary amine product, fatty alcohols, and other oily substances. If it is directly discharged into the environment or into an inadequately treated wastewater treatment plant, it will not only significantly increase production material consumption but also pollute the ecological environment.
[0003] Currently, the treatment of wastewater from tertiary amine production mainly relies on traditional oil-water separation technology, which utilizes the difference in specific gravity between water and oil to separate the oil. However, this method has significant limitations. Due to the complexity of oil-water mixtures, especially when oil droplets are small or oily substances exist in an emulsified state, traditional gravity-based oil separation methods struggle to achieve complete oil-water separation. Direct discharge of wastewater containing some oily substances without adequate treatment not only exacerbates material losses during production and increases production costs but also places higher demands on the treatment capacity of wastewater treatment plants, further increasing treatment expenses.
[0004] Furthermore, traditional oil-water separation processes often involve multiple processing steps and complex equipment configurations, resulting in a lengthy and complicated entire process. This not only increases the difficulty and cost of manual operation but may also lead to unstable treatment results due to improper operation or equipment failure, further affecting the improvement of wastewater treatment efficiency.
[0005] With increasingly stringent environmental regulations and rising demands for sustainable development in industrial production, developing a highly efficient, stable, and easy-to-operate technology for treating oily wastewater from tertiary amine production is of paramount importance. Micro-nano bubble technology, as an emerging wastewater treatment technology, has attracted considerable attention due to its ability to generate a large number of dense, tiny bubbles, effectively expanding the surface area of pollutants in wastewater and promoting the binding and flotation of pollutants with the bubbles. However, currently, there is a lack of micro-nano bubble treatment devices specifically designed for oily wastewater from tertiary amine production, failing to meet the urgent need in this field for efficient and stable wastewater treatment technology.
[0006] Therefore, it is necessary to develop an air flotation treatment device for oily wastewater from tertiary amine production. Through the thorough mixing of micro-nano bubbles with wastewater and air flotation treatment, the device can achieve efficient separation of oily substances and ensure that the wastewater meets discharge standards.
[0007] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0008] The purpose of this invention is to provide an air flotation treatment device for oily wastewater produced by tertiary amine production. Through the thorough mixing of micro-nano bubbles with wastewater and air flotation treatment, the device achieves efficient separation of oily substances and ensures that the wastewater meets discharge standards.
[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0010] This utility model relates to a flotation treatment device for oily wastewater from tertiary amine production, comprising a tank, a dissolved air pump, a sludge scraper, a micro / nano bubble generator, a dissolved air / water distributor, and a micro / nano bubble mixing tank connected to the left end of the tank. The sludge scraper is installed on the upper end of the tank, and two micro / nano bubble inlet pipes are fixedly connected through the upper end of the micro / nano bubble mixing tank. The micro / nano bubble generator is connected to the two micro / nano bubble inlet pipes via two air guide hoses. A wastewater inlet pipe is located in the middle of the left side of the micro / nano bubble mixing tank. A drainage trough is provided at the right end of the tank, and a drainage pipe is fixedly connected through the side wall of the drainage trough. The air and water inlet of the dissolved air pump is connected to the bottom of the drainage trough via a return pipe. The water outlet of the dissolved air pump is connected to the dissolved air / water distributor located at the bottom of the tank via a connecting pipe. The sludge scraper mainly includes a motor, a reducer, a drive shaft, a driven shaft, a drive sprocket, a driven sprocket, a chain, a scraper assembly, bearings, and bearing seats. The sludge scraper scrapes the foam in the tank into the sludge discharge trough.
[0011] As a preferred embodiment of this utility model, a slag discharge trough is fixed between the front and rear inner walls of the box body; a sloping guide plate is fixed to the left side of the upper port of the slag discharge trough; a first baffle plate is fixed vertically downward at the lower end of the sloping guide plate and does not contact the bottom surface of the box body; a second baffle plate is fixed on the right side of the box body between the front and rear inner walls of the box body and is flush with its upper end surface; an overflow hole that cooperates with the drainage trough is opened on the right wall of the box body; and a slag discharge pipe that communicates with the slag discharge trough is fixedly through the front wall of the box body.
[0012] As a preferred technical solution of this utility model, the left end of the box is respectively fixed with a first bracket and a second bracket for supporting the micro-nano bubble generator and the dissolved gas pump.
[0013] As a preferred embodiment of this utility model, the micro-nano bubble mixing box is a rectangular box structure with a right opening; a porous plate is fixed to the inner wall of the micro-nano bubble mixing box near its left end; a first baffle plate is fixed to the upper wall of the micro-nano bubble mixing box located to the right of the micro-nano bubble inlet pipe; and a second baffle plate is fixed to the lower wall of the right end of the micro-nano bubble mixing box.
[0014] As a preferred embodiment of this utility model, the dissolved air water distributor includes a rectangular box; a connector for connecting to the connecting pipe is fixed through the middle of the upper end of the rectangular box; and a row of horizontally arranged distribution water pipes is fixed through the side wall of the rectangular box relative to the drainage trough.
[0015] This utility model has the following beneficial effects:
[0016] 1. This invention generates a large number of dense, tiny bubbles using a micro-nano bubble generator. These bubbles are thoroughly mixed with oily wastewater in a micro-nano bubble mixing tank, efficiently expanding the surface area of the oil in the wastewater. This makes it easier for oily substances to be adsorbed by the bubbles and float to the surface, thus significantly improving oil-water separation efficiency. During the flotation process, the water containing bubbles is evenly distributed at the bottom of the tank through a dissolved air distributor. As the bubbles rise, they tightly bind with the oily substances in the wastewater, forming oil foam that quickly rises to the surface. This foam is then scraped off and discharged by a sludge scraper, effectively removing oily substances from the wastewater and significantly improving the water quality after treatment.
[0017] 2. Compared with the traditional method of separating oil by the difference in specific gravity between water and oil, this device treats more thoroughly, reduces the direct discharge of wastewater containing some oily substances to the sewage treatment plant, thereby reducing the loss of production materials and environmental pollution, and also reducing the additional costs caused by substandard treatment.
[0018] 3. This utility model has a reasonable design and is easy to operate. It can achieve continuous and stable operation through automated control, which simplifies the complex steps in traditional processing technology, reduces the difficulty of operation and labor costs, and is conducive to its widespread application in industrial production.
[0019] 4. Each component in this utility model device, such as the micro-nano bubble mixing box, dissolved air water distributor, and slag scraper, has been carefully designed to ensure thorough mixing of bubbles and wastewater, uniform distribution of bubbles, and effective removal of oil scum. At the same time, the overall structure of the device is stable and reliable, with a low failure rate and low maintenance cost during operation.
[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1This is a schematic diagram of the structure of the air flotation treatment device for oily wastewater in the production of tertiary amines according to this utility model.
[0023] Figure 2 This is a schematic diagram of the structure of the present invention after the removal of the slag scraper.
[0024] Figure 3 for Figure 2 A structural diagram from another perspective.
[0025] Figure 4 This is a schematic diagram of a dissolved air water distributor.
[0026] Figure 5 This is a cross-sectional schematic diagram of the structure of a micro / nano bubble mixing box.
[0027] The attached diagram lists the components represented by each number as follows:
[0028] 1-Box body, 2-Dissolved air pump, 3-Slag scraper, 4-Micro-nano bubble generator, 41-Gas guide hose, 5-Dissolved air water distributor, 51-Rectangular box body, 52-Connector, 53-Distribution water pipe, 6-Micro-nano bubble mixing box, 61-Micro-nano bubble inlet pipe, 62-Wastewater inlet pipe, 63-Perforated plate, 64-First baffle, 65-Second baffle, 7-Drainage trough, 71-Drainage pipe, 8-Return pipe, 9-Connecting pipe, 11-Slag discharge trough, 12-Sloping guide plate, 13-First baffle, 14-Second baffle, 15-Overflow hole, 16-Slag discharge pipe, 17-First bracket, 18-Second bracket. Detailed Implementation
[0029] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Specific Implementation Example 1:
[0031] Please see Figure 1-5 As shown, this utility model is an air flotation treatment device for oily wastewater generated during the production of tertiary amines. This device aims to solve the problems of incomplete treatment, complex processes, and high costs associated with the treatment of oily wastewater generated during the production of tertiary amines. Specifically, the device includes a tank 1, a dissolved air pump 2, a slag scraper 3, a micro / nano bubble generator 4, a dissolved air water distributor 5, and a micro / nano bubble mixing tank 6 connected to the left end of the tank 1.
[0032] A slag scraper 3 is installed at the top of the housing 1 to scrape off oil scum formed on the inner surface of the housing 1. The micro-nano bubble mixing tank 6 is a rectangular tank structure with a right-opening design, and two micro-nano bubble inlet pipes 61 are fixed through its upper end. The micro-nano bubble generator 4 is connected to the two micro-nano bubble inlet pipes 61 through two air guide hoses 41 to deliver micro-nano bubbles into the micro-nano bubble mixing tank 6. A wastewater inlet pipe 62 is provided in the middle of the left side of the micro-nano bubble mixing tank 6 to introduce oily wastewater into the tank and mix it with the micro-nano bubbles. A drain trough 7 is provided at the right end of the housing 1, and a drain pipe 71 is fixed through the side wall of the drain trough 7 to discharge the treated water. The air and water inlet of the dissolved air pump 2 is connected to the bottom of the drain trough 7 through a return pipe 8, and the water outlet of the dissolved air pump 2 is connected to the dissolved air-water distributor 5 placed at the bottom of the housing 1 through a connecting pipe 9 to form a circulating treatment system.
[0033] In actual operation, oily wastewater is introduced into the micro / nano bubble mixing box 6 through the wastewater inlet pipe 62, while the micro / nano bubble generator 4 generates a large number of micro / nano bubbles (the total number of nano bubbles generated is 1.2 × 10⁻⁶). 8 These bubbles (number per ml) mix thoroughly with the wastewater, forming a dense cluster of tiny bubbles that efficiently expands the surface area of the oil in the wastewater. The mixed, bubble-laden wastewater is piped into tank 1. Dissolved air pump 2 draws a portion of the treated water from the bottom of drain tank 7 through return pipe 8, and then transports it to dissolved air water distributor 5 through connecting pipe 9. Dissolved air water distributor 5 evenly distributes the bubble-laden water flow at the bottom of tank 1. As the bubbles rise, they bind tightly with the oil in the wastewater, forming oil foam that quickly rises to the surface.
[0034] The slag scraper 3 (mainly including a motor, reducer, drive shaft, driven shaft, drive sprocket, driven sprocket, chain, scraper assembly, bearing, and bearing housing) starts working, scraping the oil scum formed on the inner surface of the housing 1 into the slag discharge trough 11. A ramp guide plate 12 is fixed to the left side of the upper port of the slag discharge trough 11, and a first baffle 13 is fixed vertically downward at the lower end of the ramp guide plate 12, not in contact with the bottom surface of the housing 1, ensuring that the oil scum slides smoothly into the slag discharge trough 11. A second baffle 14, flush with the upper surface of the housing 1, is fixed between the front and rear inner walls on the right side of the slag discharge trough 11 to prevent oil scum from flowing back. An overflow hole 15, which cooperates with the drainage trough 7, is opened on the right wall of the housing 1. When the water level in the housing 1 is too high, excess water flows into the drainage trough 7 through the overflow hole 15. A slag discharge pipe 16, communicating with the slag discharge trough 11, is fixed through the front wall of the housing 1 for periodically discharging the oil scum accumulated in the slag discharge trough 11.
[0035] The left end of the housing 1 is fixed with a first bracket 17 and a second bracket 18 for supporting the micro-nano bubble generator 4 and the dissolved air pump 2, respectively, to ensure stable operation of the equipment.
[0036] A porous plate 63 is fixed to the inner wall near its left end of the micro-nano bubble mixing box 6, which helps to uniformly mix the bubbles and wastewater. At the same time, a first baffle plate 64 is fixed to the upper wall of the micro-nano bubble inlet pipe 61 on the right side, and a second baffle plate 65 is fixed to the lower wall of the right end, which further enhances the mixing effect.
[0037] This embodiment presents an air flotation treatment device for oily wastewater produced by tertiary amines. Through the thorough mixing of micro-nano bubbles with wastewater and air flotation treatment, oily substances are effectively driven to float up quickly and scraped off and discharged, which significantly improves the treatment efficiency and quality of oily wastewater, and reduces production material consumption and environmental pollution.
[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An air flotation treatment device for oily wastewater from tertiary amine production, comprising a tank (1), a dissolved air pump (2), and a slag scraper (3); wherein the slag scraper (3) is installed at the upper end of the tank (1), characterized in that: It also includes a micro-nano bubble generator (4), a dissolved air water distributor (5), and a micro-nano bubble mixing box (6) connected to the left end of the box (1). The micro-nano bubble mixing box (6) has two micro-nano bubble inlet pipes (61) fixed through its upper end; the micro-nano bubble generator (4) is connected to the two micro-nano bubble inlet pipes (61) through two air guide hoses (41); the micro-nano bubble mixing box (6) has a wastewater inlet pipe (62) in the middle of its left side. A drainage trough (7) is provided on the right end of the box (1); a drainage pipe (71) is fixed through the side wall of the drainage trough (7); the air inlet and water inlet of the dissolved air pump (2) are connected to the bottom of the drainage trough (7) through the return pipe (8); the water outlet of the dissolved air pump (2) is connected to the dissolved air water distributor (5) placed at the bottom of the box (1) through the connecting pipe (9).
2. The air flotation treatment device for oily wastewater in tertiary amine production according to claim 1, characterized in that, A slag discharge trough (11) is fixed between the front and rear inner walls of the box (1); a ramp guide plate (12) is fixed on the left side of the upper port of the slag discharge trough (11); a first baffle (13) is fixed at the lower end of the ramp guide plate (12) and is vertically downward and does not contact the bottom surface of the box (1); a second baffle (14) is fixed between the front and rear inner walls of the box (1) on the right side of the slag discharge trough (11) and is flush with its upper end surface; an overflow hole (15) is opened on the right wall of the box (1) to cooperate with the drainage trough (7); a slag discharge pipe (16) communicating with the slag discharge trough (11) is fixed through the front wall of the box (1).
3. The air flotation treatment device for oily wastewater in tertiary amine production according to claim 2, characterized in that, The left end of the housing (1) is fixed with a first bracket (17) and a second bracket (18) for carrying the micro-nano bubble generator (4) and the dissolved air pump (2).
4. The air flotation treatment device for oily wastewater in tertiary amine production according to claim 2 or 3, characterized in that, The micro-nano bubble mixing box (6) is a rectangular box structure with a right opening; a porous plate (63) is fixed on the inner wall of the micro-nano bubble mixing box (6) near its left end; a first baffle plate (64) is fixed on the upper wall of the micro-nano bubble mixing box (6) located to the right of the micro-nano bubble inlet pipe (61); a second baffle plate (65) is fixed on the lower wall of the right end of the micro-nano bubble mixing box (6).
5. The air flotation treatment device for oily wastewater in tertiary amine production according to claim 1, characterized in that, The dissolved air water distributor (5) includes a rectangular box (51); a connector (52) connected to the connecting pipe (9) is fixed through the middle of the upper end of the rectangular box (51); a row of horizontally arranged distribution water pipes (53) is fixed through the side wall of the rectangular box (51) relative to the drainage trough (7).