Spraying wastewater treatment device

Abstract

The utility model relates to a treatment device for spraying wastewater, in particular to a treatment device for spraying wastewater. The problems of complicated and changeable water quality, high treatment technical difficulty and high operation cost in the existing spraying wastewater treatment are solved. The device is composed of a flocculation sedimentation tank, a pH adjusting tank, a biological reaction tank, an ozone oxidation tank and an activated carbon adsorption tank. The water outlet of the flocculation sedimentation tank is communicated with the water inlet of the pH regulating tank; the water outlet of the pH regulating tank is communicated with the water inlet of the biological reaction tank; a water outlet of the biological reaction tank is communicated with a water inlet of the ozone oxidation tank; a water outlet of the ozone oxidation tank is communicated with a water inlet of the activated carbon adsorption tank. The biological reaction tank is divided into an anaerobic reaction zone, an anoxic reaction zone and an aerobic reaction zone, and a reflux water outlet of the aerobic reaction zone is communicated with a reflux water inlet of the anoxic reaction zone. Through a plurality of functional modules, pollutants such as suspended matters, organic matters and heavy metals in the spraying wastewater are removed.

Description

Technical Field

[0001] The utility model relates to a treatment device for spraying wastewater. Background Art

[0002] With the rapid development of industrialization, spray coating technology has been widely used in industries such as automobiles, furniture, and home appliances. Spray coating wastewater contains a variety of organic compounds, such as resins, pigments, and solvents, as well as heavy metal ions such as lead, chromium, and cadmium. The types and concentrations of these compounds vary significantly depending on the spraying process, coating type, and usage, making wastewater treatment more challenging. Direct discharge without effective treatment poses a serious threat to the environment and human health. Spray coating wastewater contains high concentrations of organic compounds, and some are difficult to biodegrade. Traditional biological treatment methods have limited effectiveness in removing these organic compounds, necessitating a combination of physical and chemical methods. However, these methods are often costly and may cause secondary pollution. Heavy metal ions in wastewater require specialized treatment methods, such as chemical precipitation, ion exchange, and membrane separation. The effectiveness of these methods is affected by various factors, such as wastewater pH, heavy metal ion concentration, and type. Furthermore, the sludge generated during heavy metal treatment also requires proper disposal to prevent secondary pollution. Furthermore, to remove pollutants such as organic matter and heavy metal ions from wastewater, a large amount of chemicals, such as flocculants, oxidants, and reducing agents, must be added. The consumption of these chemicals not only increases treatment costs but may also have a certain impact on the environment. Therefore, the development of efficient, economical, and environmentally friendly spray wastewater treatment equipment is crucial. Utility Model Content

[0003] The purpose of the utility model is to provide a treatment device for spraying wastewater, so as to solve the problems of complex and changeable water quality, difficult treatment technology and high operating cost in the existing treatment of spraying wastewater.

[0004] A device for treating spraying wastewater consists of a flocculation sedimentation tank, a pH adjustment tank, a biological reaction tank, an ozone oxidation tank and an activated carbon adsorption tank; one side of the flocculation sedimentation tank is connected to a spraying wastewater inlet pipe, the water outlet of the flocculation sedimentation tank is connected to the water inlet of the pH adjustment tank; the water outlet of the pH adjustment tank is connected to the water inlet of the biological reaction tank; the water outlet of the biological reaction tank is connected to the water inlet of the ozone oxidation tank; the water outlet of the ozone oxidation tank is connected to the water inlet of the activated carbon adsorption tank, and the side of the activated carbon adsorption tank away from the water inlet is connected to the water outlet pipe.

[0005] The beneficial effects of the utility model are:

[0006] This utility model not only significantly improves the efficiency and effectiveness of wastewater treatment, ensuring consistent and qualified effluent quality, but also reduces chemical usage and energy consumption through process optimization, thereby lowering treatment costs. Furthermore, the device boasts a flexible design that can adapt to varying water quality and volume requirements, enhancing adaptability and stability. More importantly, its environmentally friendly and energy-saving design minimizes pollution generated during the treatment process and maximizes resource utilization, providing a more efficient, economical, and environmentally friendly solution for the treatment of spray wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The utility model is a structural schematic diagram of a device for treating spraying wastewater. DETAILED DESCRIPTION

[0008] The technical solution of the present invention is not limited to the specific implementation methods listed below, but also includes any combination of the specific implementation methods.

[0009] Specific implementation method 1: Figure 1 The present embodiment is described in detail. A treatment device for spray wastewater in the present embodiment comprises a flocculation sedimentation tank 1, a pH adjustment tank 2, a biological reaction tank 3, an ozone oxidation tank 4, and an activated carbon adsorption tank 5; a spray wastewater inlet pipe 6 is connected to one side of the flocculation sedimentation tank 1, and the water outlet of the flocculation sedimentation tank 1 is connected to the water inlet of the pH adjustment tank 2; the water outlet of the pH adjustment tank 2 is connected to the water inlet of the biological reaction tank 3; the water outlet of the biological reaction tank 3 is connected to the water inlet of the ozone oxidation tank 4; the water outlet of the ozone oxidation tank 4 is connected to the water inlet of the activated carbon adsorption tank 5, and the activated carbon adsorption tank 5 is connected to an outlet pipe 7 on the side away from the water inlet.

[0010] This implementation method organically combines flocculation and sedimentation, pH adjustment, biological reaction, ozone oxidation, and activated carbon adsorption treatment technologies to form a highly efficient and economical spraying wastewater treatment system. This system can comprehensively remove pollutants based on the characteristics of spraying wastewater, while simultaneously reducing treatment costs and secondary pollution, providing strong support for the sustainable development of the spraying industry.

[0011] Workflow: During operation, the spraying wastewater first enters the flocculation sedimentation tank. The addition of flocculants causes suspended solids and colloidal matter in the wastewater to rapidly coagulate into larger particles that settle to the bottom of the tank, effectively removing primary impurities. Subsequently, the wastewater enters the pH adjustment tank, where the pH value is adjusted to a range suitable for biological treatment, creating favorable conditions for subsequent biological reactions.

[0012] In the bioreactor, wastewater passes through the anaerobic, anoxic, and aerobic reaction zones, where the acclimated activated sludge and microbial communities on the filler deeply degrade organic matter. The anaerobic and anoxic reaction zones primarily remove easily degradable organic matter, while the aerobic reaction zone, through aeration, provides ample oxygen to promote microbial growth and metabolic activity, further removing recalcitrant organic matter. Simultaneously, a portion of the effluent from the aerobic reaction zone is returned to the anoxic reaction zone via a peristaltic pump, creating an internal loop and improving the system's treatment efficiency and stability.

[0013] After being treated in the biological reactor, wastewater enters the ozone oxidation tank, where ozone's strong oxidizing properties are used to oxidize and decompose the remaining refractory organic matter in the wastewater, improving the wastewater's biodegradability. The use of ozone catalytic oxidation fillers further enhances the oxidation effect, ensuring efficient and stable treatment results.

[0014] Finally, the wastewater enters the activated carbon adsorption tank for deep purification. The activated carbon adsorption layer uses granular activated carbon as the adsorption medium, leveraging its large specific surface area and pore structure to efficiently adsorb and remove residual organic matter, color, odor and other pollutants in the wastewater.

[0015] Compared with existing technologies, the spraying wastewater treatment device of this utility model has shown significant benefits in terms of improving treatment efficiency and effectiveness, reducing treatment costs, enhancing adaptability and stability, and achieving environmental protection and energy conservation. This device not only solves the problem of spraying wastewater treatment, but also provides strong support for the sustainable development of the spraying industry.

[0016] Specific embodiment 2: This embodiment differs from specific embodiment 1 in that a waste discharge pipe 8 is connected to the center of the bottom of the flocculation sedimentation tank 1. Other features are the same as those of specific embodiment 1.

[0017] Specific embodiment 3: This embodiment differs from specific embodiment 1 in that: an acid-base detection probe 10 is provided in the pH adjustment tank 2, and the pH of the effluent after adjustment is 7.0-8.0. Other aspects are the same as specific embodiment 1.

[0018] Specific embodiment 4: This embodiment differs from specific embodiment 1 in that a stirring motor 9 is provided at the center upper portion of the flocculation sedimentation tank 1 and the pH adjustment tank 2, and the stirring motor 9 is connected to a stirring rod and a stirring impeller. Other features are the same as specific embodiment 1.

[0019] Specific embodiment 5: This embodiment differs from specific embodiment 1 in that the biological reaction tank 3 is sequentially composed of an anaerobic reaction zone 3-1, an anoxic reaction zone 3-2, and an aerobic reaction zone 3-3. Other features are the same as those of specific embodiment 1.

[0020] Specific embodiment 6: This embodiment differs from specific embodiment 5 in that the anaerobic reaction zone 3-1 and the anoxic reaction zone 3-2 are filled with acclimated activated sludge at a filling ratio of 1 / 2 to 2 / 3; the aerobic reaction zone 3-3 is filled with polyurethane filler at a filling ratio of 1 / 2 to 2 / 3. Other aspects are the same as specific embodiment 5.

[0021] Specific embodiment 7: This embodiment differs from specific embodiment 6 in that the size of the polyurethane filler is 2 cm×2 cm. Other aspects are the same as specific embodiment 6.

[0022] Specific embodiment eight: This embodiment differs from specific embodiment five in that an aeration device is provided at the bottom center of the aerobic reaction zone 3-3, the dissolved oxygen content in the water is 4-6 mg / L, and a portion of the effluent from the aerobic reaction zone 3-3 is recirculated to the anoxic reaction zone 3-2 using a peristaltic pump, with a reflux ratio of 1:2 to 1:1. Other aspects are the same as specific embodiment five.

[0023] Specific embodiment 9: This embodiment differs from specific embodiment 8 in that: an ozone catalytic oxidation filler is provided in the ozone oxidation tank 4, and the filling rate of the filler is 50-60%. Other aspects are the same as specific embodiment 8.

[0024] Specific embodiment 10: This embodiment differs from specific embodiment 1 in that the adsorption in the activated carbon adsorption tank 5 uses granular activated carbon with a dosage of 15-20 mg / L. Other aspects are the same as specific embodiment 1.

Claims

1. A treatment device for spraying wastewater, characterized in that The treatment device for spraying wastewater consists of a flocculation sedimentation tank (1), a pH regulating tank (2), a biological reaction tank (3), an ozone oxidation tank (4) and an activated carbon adsorption tank (5); one side of the flocculation sedimentation tank (1) is connected to a spraying wastewater inlet pipe (6); the water outlet of the flocculation sedimentation tank (1) is connected to the water inlet of the pH regulating tank (2); the water outlet of the pH regulating tank (2) is connected to the water inlet of the biological reaction tank (3); the water outlet of the biological reaction tank (3) is connected to the water inlet of the ozone oxidation tank (4); the water outlet of the ozone oxidation tank (4) is connected to the water inlet of the activated carbon adsorption tank (5), and the side of the activated carbon adsorption tank (5) away from the water inlet is connected to a water outlet pipe (7).

2. A treatment device for spraying wastewater according to claim 1, characterized in that A waste discharge pipe (8) is connected to the center of the bottom of the flocculation sedimentation tank (1).

3. The treatment device for spraying wastewater according to claim 1, characterized in that An acid-base detection probe (10) is provided in the pH adjustment tank (2), and the pH of the effluent after adjustment is 7.0-8.

0.

4. The treatment device for spraying wastewater according to claim 1, characterized in that A stirring motor (9) is provided at the upper center of each of the flocculation sedimentation tank (1) and the pH adjustment tank (2), and the stirring motor (9) is connected to a stirring rod and a stirring impeller.

5. The treatment device for spraying wastewater according to claim 1, characterized in that The biological reaction tank (3) is composed of an anaerobic reaction zone (3-1), an anoxic reaction zone (3-2) and an aerobic reaction zone (3-3) in sequence.

6. A treatment device for spraying wastewater according to claim 5, characterized in that The anaerobic reaction zone (3-1) and the anoxic reaction zone (3-2) are filled with domesticated activated sludge at a filling ratio of 1 / 2 to 2 / 3; the aerobic reaction zone (3-3) is filled with polyurethane filler at a filling ratio of 1 / 2 to 2 / 3.

7. A treatment device for spraying wastewater according to claim 6, characterized in that The size of the polyurethane filler is 2 cm×2 cm.

8. The treatment device for spraying wastewater according to claim 5, characterized in that An aeration device is provided at the bottom center of the aerobic reaction zone (3-3). The dissolved oxygen content in the water is 4-6 mg / L. A portion of the effluent from the aerobic reaction zone (3-3) is returned to the anoxic reaction zone (3-2) using a peristaltic pump, and the reflux ratio is 1:2-1:

1.

9. The treatment device for spraying wastewater according to claim 1, characterized in that The ozone oxidation tank (4) is provided with ozone catalytic oxidation fillers, and the filling rate of the fillers is 50-60%.

10. The treatment device for spraying wastewater according to claim 1, characterized in that The adsorption in the activated carbon adsorption tank (5) uses granular activated carbon with a dosage of 15-20 mg / L.

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