Paint-containing wastewater treatment system

Abstract

The utility model discloses a paint-containing wastewater treatment system which comprises a nano generator, a water storage tank, a liquid conveyor and an air guide device, the water storage tank is used for storing coating-containing wastewater; the liquid conveyor is arranged between the water storage tank and the nano generator and is used for guiding the coating-containing wastewater in the water storage tank into the nano generator for reaction; the air guide device is connected with the nano generator and is used for guiding air into the nano generator to provide required oxygen for the reaction of the coating-containing wastewater; compared with the prior art, the device mainly comprises the nano generator, the water storage tank, the liquid conveyor and the air guide device, the water storage tank is used for storing the coating-containing waste water, the coating-containing waste water can be stably guided into the nano generator through the liquid conveyor, and meanwhile, the air guide device guides air into the nano generator; the coating-containing wastewater and air are matched to form nano bubble water in the nano generator, and the nano bubble water contains a large number of hydroxyl free radicals, so that the nano bubble water has strong oxidizing property and is used for decomposing refractory substances in a water body.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a paint-containing wastewater treatment system. Background Art

[0002] Spraying wastewater mainly comes from the wet spraying room using water to wash the air in the spraying room working area, and the paint and organic solvents in the air are transferred to the water to form spraying wastewater. The wastewater contains a large amount of paint particles, and its water quality depends on the paint used (mainly nitro paint, amino paint, alkyd paint and epoxy paint), solvents (such as ethanol, acetone, esters, benzene) and additives.

[0003] CN211971970U discloses a spraying wastewater treatment and recycling system, which includes a pretreatment system, an ultrafiltration system, an activated carbon filtration system, and a reuse system arranged in sequence along the sewage treatment direction. The pretreatment system, the ultrafiltration system, and the activated carbon filtration system are connected to the sludge treatment system via a sludge main pipe.

[0004] The pretreatment system in the above-mentioned spray wastewater treatment and recycling system needs to add alkali solution, flocculants and other drugs, which leads to high treatment costs of the spray wastewater and also introduces new ions into the spray wastewater, affecting the treatment effect of the spray wastewater. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a paint-containing wastewater treatment system to solve the problem in the prior art that the existing paint-containing wastewater treatment system requires the addition of chemicals, resulting in high treatment costs for the paint-containing wastewater and also introducing new ions that affect the treatment effect of the paint-containing wastewater.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: a paint-containing wastewater treatment system, comprising:

[0007] Nano generator;

[0008] A water storage tank, the water storage tank is used to store paint-containing wastewater;

[0009] A liquid conveyor, which is arranged between the water storage tank and the nano generator and is used to introduce the coating-containing wastewater in the water storage tank into the nano generator for reaction;

[0010] The air guide is connected to the nano generator and is used to introduce air into the nano generator to provide the required oxygen for the reaction of the coating wastewater.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The paint-containing wastewater treatment system is mainly composed of a nanogenerator, a water storage tank, a liquid conveyor and an air guide. The paint-containing wastewater is first stored in the water storage tank, and then the paint-containing wastewater can be stably introduced into the nanogenerator through the liquid conveyor. At the same time, the air guide introduces air into the nanogenerator. The paint-containing wastewater and air are combined in the nanogenerator to form nano bubble water. The nano bubble water contains a large amount of hydroxyl free radicals with strong oxidizing properties, which can decompose the difficult-to-degrade substances in the water body. The whole process does not require the addition of drugs and no other pollutants are produced. It has the advantages of simple operation, good treatment effect and strong feasibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a process flow chart of an embodiment of the utility model;

[0014] Figure 2 This is a process flow chart of another embodiment of the utility model;

[0015] Figure 3 It is a structural schematic diagram of a liquid distribution pipe in another embodiment of the utility model. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below through specific implementation methods:

[0017] like Figure 1 As shown, an embodiment of the utility model proposes a paint-containing wastewater treatment system, comprising a nanogenerator, a water storage tank, a liquid conveyor and an air guide; wherein the water storage tank is used to store paint-containing wastewater; the liquid conveyor is arranged between the water storage tank and the nanogenerator, and is used to introduce the paint-containing wastewater in the water storage tank into the nanogenerator for reaction; the air guide is connected to the nanogenerator, and is used to introduce air into the nanogenerator to provide the required oxygen for the paint-containing wastewater reaction.

[0018] In this embodiment: the liquid conveyor is a circulating water pump, and the air guide is a vortex fan.

[0019] When using:

[0020] The paint-containing wastewater enters the water storage tank for collection and storage, and the circulating water pump runs to stably deliver the paint-containing wastewater in the water storage tank into the nano generator; at the same time, the vortex fan runs to draw the outside air into the nano generator, and the air and the paint-containing wastewater cooperate in the nano generator to form nano bubble water. The nano bubble water contains a large amount of hydroxyl free radicals with strong oxidizing properties, which decomposes the difficult-to-degrade substances in the water body, thereby efficiently purifying the paint-containing wastewater.

[0021] The nano generator, water storage tank, circulating water pump and vortex fan are mainly made of stainless steel, which is durable and has a long operating cycle.

[0022] The paint-containing wastewater treatment system can cooperate with the existing central control system to automatically control its normal operation.

[0023] like Figure 2 As shown, according to another embodiment of the utility model, the paint-containing wastewater treatment system further includes a grille pool, which is connected to the water tank and is located at the front side of the water tank.

[0024] During the spraying process, solid wastes such as resins are mixed in the paint-containing wastewater; the paint-containing wastewater is first passed through a grid pool to remove some large particles of solid waste, which is conducive to the efficient and safe operation of the paint-containing wastewater entering the nanogenerator.

[0025] In order to further improve the treatment effect of paint-containing wastewater, the paint-containing wastewater treatment system also includes a pretreatment tank, which is connected between the grid tank and the water storage tank, and the liquid outlet of the nanogenerator is formed with a return pipe connected to the pretreatment tank.

[0026] The paint-containing wastewater is introduced into the grille pool to remove some large particles of solid waste in the paint-containing wastewater; then the paint-containing wastewater is introduced into the pretreatment pool, and the return pipe introduces part of the purified paint-containing wastewater discharged from the outlet of the nanogenerator into the pretreatment pool. Since the paint-containing wastewater guided back by the return pipe also contains hydroxyl radicals, the paint-containing wastewater can be pretreated in the pretreatment pool and then introduced into the water storage tank for storage. The circulating water pump is operated to stably send the paint-containing wastewater in the water storage tank into the nanogenerator; at the same time, the vortex fan is operated to draw external air into the nanogenerator, and the air and the paint-containing wastewater cooperate in the nanogenerator to form nano bubble water. The nano bubble water contains a large amount of hydroxyl radicals and has strong oxidizing properties, which can decompose the difficult-to-degrade substances in the water body, thereby purifying the paint-containing wastewater more efficiently.

[0027] In order to evenly distribute the paint-containing wastewater returned by the return pipe into the pretreatment tank to improve the pretreatment effect; Figure 2 and Figure 3 As shown, according to another embodiment of the utility model, in the paint-containing wastewater treatment system, a liquid distribution pipe connected to the liquid return pipe is arranged in the pretreatment tank.

[0028] The nano bubble water returned from the return pipe is evenly distributed into the pretreatment tank through the liquid distribution pipe, so as to improve the pretreatment effect of the paint-containing wastewater; specifically, the liquid distribution pipe includes an annular pipe section and a branch pipe section; wherein the annular pipe section is arranged along the circumferential direction of the bottom side of the pretreatment tank and has a plurality of first liquid distribution holes thereon; the branch pipe sections have a plurality of and are all connected to the annular pipe section, and the branch pipe sections are staggered along the transverse and longitudinal directions on the inner side of the annular pipe section, and each branch pipe section has a plurality of second liquid distribution holes thereon.

[0029] A liquid distribution pipe is formed by cooperating with a plurality of branch pipe sections and an annular pipe section to evenly distribute the nano bubble water returned from the return pipe into the pretreatment tank, thereby improving the pretreatment effect of the paint-containing wastewater.

[0030] In order to further improve the treatment effect of paint-containing wastewater, Figure 2 As shown, according to another embodiment of the utility model, in the paint-containing wastewater treatment system, the water outlet of the nanogenerator is also connected to an activated carbon adsorber.

[0031] After the paint-containing wastewater is treated by the nano generator, it is introduced into the activated carbon adsorber for adsorption, which can further remove the organic matter content and also remove odor.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A paint-containing wastewater treatment system, characterized in that: include: Nano generator; A water storage tank, the water storage tank is used to store paint-containing wastewater; A liquid conveyor, which is arranged between the water storage tank and the nano generator and is used to introduce the coating-containing wastewater in the water storage tank into the nano generator for reaction; The air guide is connected to the nano generator and is used to introduce air into the nano generator to provide the required oxygen for the reaction of the coating wastewater.

2. A paint-containing wastewater treatment system according to claim 1, characterized in that: Also includes: A grid pool is connected to the water storage tank and is located at the front side of the water storage tank.

3. A paint-containing wastewater treatment system according to claim 2, characterized in that: Also includes: The pretreatment tank is connected between the grid tank and the water storage tank, and the liquid outlet of the nano generator is formed with a liquid return pipe connected to the pretreatment tank.

4. A paint-containing wastewater treatment system according to claim 3, characterized in that: A liquid distribution pipe connected with the liquid return pipe is arranged in the pretreatment tank.

5. A paint-containing wastewater treatment system according to claim 4, characterized in that: The liquid distribution pipe comprises: an annular pipe section, which is arranged along the circumferential direction of the inner bottom side of the pretreatment tank and has a plurality of first liquid distribution holes; There are several branch pipe sections, all of which are connected to the annular pipe section. The branch pipe sections are staggered along the transverse and longitudinal directions on the inner side of the annular pipe section, and each branch pipe section is provided with several second liquid distribution holes.

6. A paint-containing wastewater treatment system according to claim 1, characterized in that: The liquid conveyor is a circulating water pump.

7. A paint-containing wastewater treatment system according to claim 1, characterized in that: The air guide is a vortex fan.

8. A paint-containing wastewater treatment system according to claim 1, characterized in that: The water outlet of the nano generator is also connected to an activated carbon adsorber.

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