CN211664908U - Paint spraying wastewater treatment system - Google Patents

Abstract

The utility model discloses a paint spraying wastewater treatment system, including storage pond, air supporting pond, sedimentation tank, pressure filter and the clean water basin that connects gradually, be provided with the baffle in the air supporting pond, leave free passage between the bottom in baffle and air supporting pond, the baffle is cut apart into air supporting district and clear liquid district with the air supporting pond, is provided with backflow pipeline and dissolved air pump between clear liquid district and the air supporting district, still includes the dosing pump, and the dosing pump is connected to backflow pipeline through adding the dosing pipeline, the clear liquid district in air supporting pond is connected to the sedimentation tank, the utility model discloses can the effective treatment waste water that sprays paint, the paint in the messenger waste water that sprays paint forms paint sediment air supporting through adding the medicine mode and is convenient for clean, and sediment accessible pressure filter carries out the filter-pressing, will solid waste and separation of water, discharges qualified water or retrieval and utilization at last, and the equipment that uses is less.

Description

Paint spraying wastewater treatment system

Technical Field

The utility model belongs to the waste water treatment field of spraying paint, more specifically the utility model relates to a waste water treatment system sprays paint that says so.

Background

The paint spraying waste water is mainly from a wet type paint spraying chamber, the air of a paint spraying chamber operation area is washed by water, and paint substances and organic solvents in the air are transferred into the water to form the paint spraying waste water. The waste water contains a large amount of paint particles, and the water quality of the waste water is determined by the used coating (mainly acrylic paint, nitrolacquer, amino paint, alkyd paint and epoxy paint), solvent (such as ethanol, acetone, esters and benzene) and auxiliary agent.

In the paint spraying process, the over-sprayed paint mist flows into the water tank after being absorbed by the water curtain, the circulating water is turbid after being used for a long time, the water quality is smelly, the paint slag is precipitated too much, the pipeline can be blocked frequently, and the normal production is influenced. The paint spraying circulating water is difficult to degrade due to high pollution value, and is difficult to treat by a common wastewater treatment process; frequent water changing and pool cleaning consumes a large amount of manpower and material resources, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a can the effective treatment waste water that sprays paint makes the paint in the waste water that sprays paint form paint sediment air supporting through adding the medicine mode and be convenient for clean, and precipitate accessible pressure filter carries out the filter-pressing, will give up useless and separation of water admittedly, discharges qualified water or the retrieval and utilization at last, and the equipment that uses is less.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a paint spraying wastewater treatment system, is including the storage tank, air supporting pond, sedimentation tank, pressure filter and the clean water basin that connect gradually, be provided with the baffle in the air supporting pond, leave free passage between the bottom in baffle and air supporting pond, the baffle is cut apart into air supporting district and clear liquid district with the air supporting pond, is provided with backflow pipeline and dissolved air pump between clear liquid district and the air supporting district, still includes the dosing pump, and the dosing pump is connected to backflow pipeline through adding the medicine pipeline, the clear liquid district in air supporting pond is connected to the sedimentation tank.

Furthermore, one end of the backflow pipeline extending into the air floatation area is provided with a release head, and the release head extends into the air floatation area.

Further, an MBR membrane is arranged in the clean water tank.

Further, a sludge pipeline is arranged between the filter press and the sedimentation tank and connected to the bottom of the sedimentation tank.

And a degreaser is connected behind the clean water tank.

Further, a pipeline mixer is arranged at the joint of the dosing pipeline and the return pipeline.

Compared with the prior art, the beneficial effects of the utility model are that: the cooperation through dissolved air pump and release head can make the bubble diameter in the air supporting district less, the medicament that combines to add the medicine pump and will get rid of the viscidity of paint and the emulsibility of circulating water, fine solution the separation of paint sediment and water, it floats in the surface of water to make the paint sediment form loose state, salvage that can be very convenient, and air supporting district bottom gets water accessible free passage and flows to the clear liquid district, recycling through backflow pipeline and dissolved air pump with inside clear liquid, waste water after the deoiling gets into the sedimentation tank and deposits, will be useless admittedly and separate water through the pressure filter extrusion, the water after the separation conveniently carries out the retrieval and utilization.

Drawings

FIG. 1 is a schematic structural view of the paint spraying wastewater treatment system of the present invention.

Reference numerals: 1. a storage tank; 2. an air floatation tank; 21. an air flotation zone; 22. a clear liquid zone; 23. a free channel; 3. a sedimentation tank; 4. a filter press; 41. a sludge pipeline; 5. a clean water tank; 6. an oil remover; 81. a dosing pump; 82. a dosing pipeline; 91. a dissolved air pump; 92. a return line; 93. the head is released.

Detailed Description

The embodiment of the paint spraying wastewater treatment system of the present invention is further described with reference to FIG. 1.

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.

The utility model provides a paint spraying wastewater treatment system, is including storage tank 1, air supporting pond 2, sedimentation tank 3, pressure filter 4 and the clean water basin 5 that connect gradually, be provided with the baffle in the air supporting pond 2, leave free passage 23 between the bottom of baffle and air supporting pond 2, the baffle is cut apart into air supporting pond 2 and is distinguished 21 and clear liquid 22, is provided with backflow pipeline 92 and dissolved air pump 91 between clear liquid district 22 and the air supporting district 21, still includes dosing pump 81, and dosing pump 81 is connected to backflow pipeline 92 through adding medicine pipeline 82, sedimentation tank 3 is connected the clear liquid district 22 of air supporting pond 2.

As shown in fig. 1, in this embodiment, the storage tank 1 is connected to the flotation tank 2 through a water pump and a pipeline, the clear liquid region 22 is connected to the sedimentation tank 3 through a water pump and a pipeline, and water generated by the filter press 4 is introduced into the clear water tank 5 through the water pump and the sludge pipeline 41, wherein the direction indicated by the arrow in fig. 1 is the liquid flow direction.

The medicament added at the dosing pump 81 is DAC or AB medicament, and the air dissolving pump 91 is arranged behind the connection part of the return pipeline 92 and the dosing pipeline 82.

When the device works, paint spraying wastewater is guided into the storage tank 1 for storage, part of pollutants floating on the surface and settling at the bottom can be cleaned regularly, the wastewater in the storage tank 1 is guided into the air floatation tank 2 through the water pump, a medicament DAC or AB agent is added into the return pipeline 92 through the medicament adding pump 81, the air dissolving pump 91 mixes water extracted from the clear liquid zone 22 with the medicament, the air dissolving pump 91 also mixes air into the mixed liquid and sends the mixed liquid into the air floatation zone 21 together, small bubbles are formed in the air floatation zone 21, the DAC or AB agent removes the viscosity of paint and the emulsibility of circulating water in the air floatation zone 21, so that paint residues and water are separated, the paint residues float on the water surface in a loose state, workers can clean the paint residues regularly, the water is positioned below the paint residues, namely the middle lower part of the air floatation zone 21, and the clear liquid zone 22 is communicated with the air floatation zone 21 through the free channel 23, the water without paint residues flows to the clear liquid area 22 through the self-contained channel and then is mixed with the medicament to the air flotation area 21 through the return pipeline 92 to form circulation, namely, the paint residues are completely in the air flotation area 21, and the clear liquid area 22 is free of paint residues;

after paint is removed, water in the clear liquid area 22 is guided into the sedimentation tank 3 through the water pump to be precipitated, muddy water is formed at the bottom of the sedimentation tank 3, solid pollutants in the water are precipitated, the muddy water is guided into the filter press 4 through the water pump and the sludge pipeline 41 to be filter-pressed, solid waste is separated from the water, the sludge pipeline 41 extends into the bottom of the sedimentation tank 3, the separated water is free of paint residues and solid waste, the water can be guided into the clear water tank 5 through the water pump for standby, and the water in the clear water tank 5 can be used for paint spraying and recycling.

The one end that return line 92 stretched into air supporting district 21 that this embodiment is preferred is provided with release head 93, and release head 93 stretches into air supporting district 21 in, through the cooperation of release head 93 with dissolved air pump 91, the medicament that makes the interior entering of air supporting district 21 forms the micro bubble, is convenient for get rid of the viscidity of paint and the emulsibility of circulating water, the quick separation that makes water and paint sediment.

This embodiment is preferred be provided with the MBR membrane in the clean water basin 5, the MBR membrane can filter the tiny pollutant of clean water basin 5 water-logging in clean water basin 5, avoids blockking up paint spraying apparatus when the retrieval and utilization.

In the preferred embodiment, the rear part of the clean water tank 5 is connected with an oil remover 6, and the water in the clean water tank 5 is subjected to final oil removal operation before being reused, so that the water entering the paint spraying equipment is free of grease and solid waste.

The medicine pipeline 82 that this embodiment is preferred is provided with the line mixer with return line 92 junction, and the line mixer can make water and medicament misce bene by clear liquid district 22 backward flow, and the distribution is even when reentrant air supporting district 21, and the efficiency of water and the separation of paint sediment is improved to the more effective quick processing paint.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a waste water treatment system sprays paint which characterized in that: including storage tank, air supporting pond, sedimentation tank, pressure filter and the clean water basin that connects gradually, be provided with the baffle in the air supporting pond, leave free passage between the bottom in baffle and air supporting pond, the baffle is cut apart into air supporting district and clear liquid district with the air supporting pond, is provided with backflow pipeline and dissolved air pump between clear liquid district and the air supporting district, still includes the dosing pump, and the dosing pump is connected to backflow pipeline through adding the medicine pipeline, the clear liquid district in air supporting pond is connected to the sedimentation tank.

2. The paint spraying wastewater treatment system according to claim 1, characterized in that: and one end of the backflow pipeline extending into the air floatation area is provided with a release head, and the release head extends into the air floatation area.

3. The paint spraying wastewater treatment system according to claim 2, characterized in that: and an MBR membrane is arranged in the clean water tank.

4. The paint spraying wastewater treatment system according to claim 3, characterized in that: and a sludge pipeline is arranged between the filter press and the sedimentation tank and is connected to the bottom of the sedimentation tank.

5. The paint spraying wastewater treatment system according to claim 4, characterized in that: and an oil remover is connected behind the clean water tank.

6. The paint spraying wastewater treatment system according to claim 5, characterized in that: and a pipeline mixer is arranged at the joint of the dosing pipeline and the return pipeline.

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