Paint-containing waste paint wastewater treatment system

Abstract

The utility model discloses a waste paint-containing wastewater treatment system which comprises a wastewater collection tank, AB agent feeding equipment, a wastewater pump, an agent reaction tank, a solid-liquid separation system, a waste paint slag collection box and a clear water collection tank, waste water containing waste paint in the waste water collecting tank is pumped into the agent reaction tank through the waste water pump to carry out agent reaction, an agent A is put into the water inlet pipe of the waste water pump through the agent AB putting equipment while water pumping is carried out, the agent A flows into the agent reaction tank along with water flow, and the agent A is mixed with water under the flowing action of the water flow; the AB agent feeding equipment adds an agent B into the agent reaction tank, water and waste paint are separated through the agent reaction tank, the water and the waste paint are discharged into the clear water collection tank and the waste paint slag collection tank through the solid-liquid separation system respectively, and the situation that waste water containing paint is directly discharged to block a pipeline is avoided; water recycling is achieved, water resource waste is avoided, and waste paint is prevented from harming the ecological environment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment system containing waste paint. Background Technology

[0002] During the painting process, circulating water is needed to absorb paint mist. This causes the water to absorb a large amount of paint particles, solvent particles, dyes, and synthetic resins, making it turbid, deteriorated, and smelly, which affects normal production. The water in the painting line contains waste paint. Directly discharging water containing waste paint not only causes pipe blockage but also wastes water resources. The waste paint in the wastewater also pollutes the environment.

[0003] To address the shortcomings of existing technologies, it is necessary to design a wastewater treatment system containing waste paint. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wastewater treatment system containing waste paint.

[0005] A wastewater treatment system containing waste paint includes a wastewater collection tank, an AB agent dosing device, a wastewater pump, a reagent reaction tank, a solid-liquid separation system, a waste paint residue collection box, and a clean water collection tank. The A agent dosing port of the AB agent dosing device is connected to the inlet pipe of the wastewater pump via a pipe. The wastewater pump inlet pipe is located inside the wastewater collection tank. The outlet of the wastewater pump is connected to the inlet of the reagent reaction tank. The B agent dosing port of the AB agent dosing device is connected to the reagent reaction tank via a pipe. The solid-liquid separation system includes a liquid inlet, a residue outlet, and a drain outlet. The outlet of the reagent reaction tank is connected to the liquid inlet of the solid-liquid separation system. The waste paint residue collection box is located at the residue outlet. The clean water collection tank is connected to the drain outlet via a pipe.

[0006] Furthermore, the solid-liquid separation system includes a release device, a flotation tank, a dissolved air tank, an air compressor, a dissolved air pressurizing pump, and a sludge scraper; the liquid inlet is located on one side of the flotation tank near the bottom, the drain outlet is located on the other side of the flotation tank near the bottom, the release device is located near the liquid inlet of the flotation tank and connected to the dissolved air tank through a pipe, the air compressor and the dissolved air pressurizing pump are both located on the dissolved air tank, the sludge scraper is located above the flotation tank, and the sludge outlet is located on the sludge scraper.

[0007] Furthermore, control valves are installed on both the inlet and outlet.

[0008] Furthermore, a baffle is provided on the inner wall of the bottom of the flotation tank, and the baffle is installed near the release device and inclined towards the drain outlet of the flotation tank.

[0009] Furthermore, the baffle is tilted at an angle of 45 degrees.

[0010] Beneficial effects: This utility model uses a wastewater pump to draw wastewater containing paint waste from a wastewater collection tank into a chemical reaction tank for chemical reaction. Simultaneously, an AB agent dosing device adds agent A into the inlet pipe of the wastewater pump. As the water flows into the chemical reaction tank, agent A mixes with the water. The AB agent dosing device then adds agent B to the chemical reaction tank. The chemical reaction tank separates the water and paint waste. Afterwards, a solid-liquid separation system discharges the water and paint waste into a clean water collection tank and a waste paint residue collection box, respectively. This avoids directly discharging paint-containing wastewater, which could clog pipes and increase maintenance costs. It also achieves water recycling, avoids water waste, and prevents paint waste from harming the ecological environment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the wastewater treatment system of this utility model;

[0012] In the picture:

[0013] Wastewater collection tank 1; AB agent dosing equipment 2; wastewater pump 3; reagent reaction tank 4; solid-liquid separation system 5; release device 51; air flotation tank 52; dissolved air tank 53; air compressor 54; dissolved air pressurization pump 55; slag scraper 56; waste paint residue collection box 6; clear water collection tank 7. Detailed Implementation

[0014] 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 protection scope of the present utility model.

[0015] Please refer to Figure 1This embodiment proposes a wastewater treatment system containing waste paint, including a wastewater collection tank 1, an AB agent dosing device 2, a wastewater pump 3, a reagent reaction tank 4, a solid-liquid separation system 5, a waste paint residue collection box 6, and a clean water collection tank 7. The A agent dosing port of the AB agent dosing device 2 is connected to the inlet pipe of the wastewater pump 3 via a pipe. The inlet pipe of the wastewater pump 3 is located inside the wastewater collection tank 1, and the outlet of the wastewater pump 3 is connected to the inlet of the reagent reaction tank 4. The B agent dosing port of the AB agent dosing device 2 is connected to the reagent reaction tank 4 via a pipe. The solid-liquid separation system 5 is equipped with an inlet, a residue outlet, and a drain outlet. The outlet of the reagent reaction tank 4 is connected to the inlet of the solid-liquid separation system 5. The waste paint residue collection box 6 is located at the residue outlet. The clean water collection tank 7 is connected to the drain outlet via a pipe. The inlets are connected, and the wastewater containing paint waste in the wastewater collection tank 1 is pumped by the wastewater pump 3 to the chemical reaction tank 4 for chemical reaction. At the same time as pumping the water, the AB agent dosing device 2 adds agent A to the inlet pipe of the wastewater pump 3. Agent A has a desiccant effect and flows into the chemical reaction tank 4 with the water flow. Agent A mixes with the water under the action of the water flow. The AB agent dosing device 2 adds agent B to the chemical reaction tank 4. Agent B has a coagulation effect. The chemical reaction tank 4 separates the water and paint waste. Then, the solid-liquid separation system 5 discharges the water and paint waste into the clear water collection tank 7 and the waste paint residue collection box 6 respectively, realizing the recycling of water resources, avoiding wastewater waste, preventing paint waste from harming the ecological environment, and avoiding direct discharge of paint-containing wastewater to avoid clogging pipes and increasing maintenance costs.

[0016] The wastewater after separating waste paint and water through the solid-liquid separation system 5 is further treated, allowing the water to be recycled and the waste paint to be disposed of safely. The solid-liquid separation system 5 includes a release device 51, a flotation tank 52, a dissolved air tank 53, an air compressor 54, a dissolved air pressurization pump 55, and a sludge scraper 56. The inlet is located on one side of the flotation tank 52 near the bottom, and the outlet is located on the other side of the flotation tank 52 near the bottom. The release device 51 is located near the inlet of the flotation tank 52 and is connected to the dissolved air tank 53 via a pipeline. The system is interconnected. Air compressor 54 and dissolved air pressurization pump 55 are both mounted on dissolved air tank 53. Sludge scraper 56 is positioned above flotation tank 52, with the sludge outlet located on scraper 56. Control valves are installed on both the inlet and outlet. These valves control the inlet of flotation tank 52, allowing wastewater that has undergone chemical reaction in reagent reaction tank 4 to enter flotation tank 52. The pressurized dissolved air water in dissolved air tank 53 releases a large number of microbubbles into flotation tank 52 via release device 51. These bubbles provide buoyancy by adsorbing onto the waste paint, promoting rapid solid-liquid separation and improving water purification. Sludge scraper 56 removes the separated waste paint and discharges it into waste paint sludge collection box 6 through the sludge outlet. No manual sludge removal is required, significantly improving wastewater treatment efficiency.

[0017] A baffle is installed on the inner wall of the bottom of the flotation tank 52. The baffle is installed near the release device 51 and tilted towards the drain outlet of the flotation tank 52. The tilt angle of the baffle is 45 degrees. In order to improve the solid-liquid separation effect of the flotation tank 52, the baffle is installed at its bottom. The baffle is located near the release device 51 to help reduce the interference of water flow on suspended solids, making it easier for suspended solids to float and be removed. The baffle shortens the time for suspended solids to float and separate, thereby improving the treatment efficiency of the flotation tank 52.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment system for oil-based paint containing waste paint, characterized by: The system comprises a wastewater collecting tank (1), an AB agent feeding device (2), a wastewater pump (3), a reagent reaction tank (4), a solid-liquid separation system (5), a waste paint residue collecting tank (6) and a clean water collecting tank (7). The A agent feeding port of the AB agent feeding device (2) is connected with the water inlet pipe of the wastewater pump (3) through a pipeline, the water inlet pipe of the wastewater pump (3) is arranged in the wastewater collecting tank (1), the water outlet end of the wastewater pump (3) is connected with the water inlet port of the reagent reaction tank (4), the B agent feeding port of the AB agent feeding device (2) is connected with the reagent reaction tank (4) through a pipeline, the solid-liquid separation system (5) is provided with a liquid inlet port, a residue outlet port and a drainage port, the water outlet port of the reagent reaction tank (4) is connected with the liquid inlet port of the solid-liquid separation system (5), the waste paint residue collecting tank (6) is arranged at the residue outlet port, and the clean water collecting tank (7) is connected with the drainage port through a pipeline.

2. The wastewater treatment system of claim 1, wherein: The solid-liquid separation system (5) comprises a releaser (51), a flotation tank (52), a dissolved air tank (53), an air compressor (54), a dissolved air pressurizing pump (55) and a residue scraping machine (56); the liquid inlet port is arranged at one side of the flotation tank (52) close to the bottom, the drainage port is arranged at the other side of the flotation tank (52) close to the bottom, the releaser (51) is arranged close to the liquid inlet port of the flotation tank (52) and is connected with the dissolved air tank (53) through a pipeline, the air compressor (54) and the dissolved air pressurizing pump (55) are both arranged on the dissolved air tank (53), the residue scraping machine (56) is arranged above the flotation tank (52), and the residue outlet port is arranged on the residue scraping machine (56).

3. The wastewater treatment system of claim 1, wherein: Control valves are arranged on the liquid inlet port and the drainage port.

4. The wastewater treatment system of claim 2, wherein: A baffle is arranged on the inner wall of the bottom of the flotation tank (52), the baffle is arranged close to the releaser (51) and is inclined to the drainage port of the flotation tank (52).

5. The wastewater treatment system of claim 4, wherein: The inclination angle of the baffle is 45 degrees.

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