A method for removing paint in spraying circulating water
A technology for circulating water and paint, which is applied in separation methods, grease/oily substance/floating matter removal devices, liquid separation, etc. It can solve the problems of heavy workload, difficult discharge of paint slag, waste of water resources, etc., and achieve the reduction of solid waste The effect of processing capacity, reducing the cost of solid waste treatment, and simple process flow
Inactive Publication Date: 2016-01-20
江苏佳有环保科技有限公司
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Problems solved by technology
At present, the treatment of paint slag in the circulating water in the factory is mostly carried out directly in the main circulating water tank. This method is not easy to discharge the separated paint slag, so it is necessary to discharge the circulating water regularly and treat the paint slag in the main circulating water tank. A large amount, and caused a lot of waste of water resources
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[0029] 1) The fan blows air into the spraying circulating water pool, and the paint residue sinking at the bottom of the pool is evenly stirred, and then pumps the paint residue water in the circulating water pool to the first reaction tank 1;
[0030] 2) Add a viscosifier, a ph regulator, and a water quality clarifier to the first reaction tank 1, and use a paddle mixer to stir quickly for 5 hours, then stir slowly for 0.4 hours, and the paint breaks the viscosity to form paint residue;
[0031] 3) The paint slag enters the second reaction pool 3 through the channel between the first reaction pool 1 and the second reaction pool 3 along with the waste water, and the main component is alginate in the second reaction pool 3. Special gelling agent, stir slowly for 2 hours to make the paint slag gather into large particles of rubber plume.
[0032] 4) The large particles of glue plume enter the sedimentation tank 5 with the sloping plate through the channel along with the paint wa...
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The invention discloses a method for removing paint in spraying circulating water. The method comprises the following steps: 1) pumping spraying circulating water uniformly mixed under stirring into a first reaction tank (1) by using a pump; 2) adding a drug mixed solution containing a viscosity eliminating agent into the first reaction tank (1) and carrying out stirring at a faster speed at first and a slower speed next with a paddle wheel agitator (2) so as to allow the viscosity eliminating agent to eliminate viscosity of paint water, thereby forming paint slag; 3) allowing the paint slag to enter into a second reaction tank (2) with waste water through an intermediate pore channel located between the first reaction tank (1) and the second reaction tank (2), adding a special gelatinizing agent with alginate as a main component into the second reaction tank (2) and carrying out slow stirring to allow the paint slag to form large-particle floc through aggregation; and 4) allowing waste water containing the large-particle floc into a settling basin (5) with an inclined plate (6) through the pore channel, bump into the inclined plate (6) in the settling basin (5) and then automatically settle to a bottom paint slag chamber (7), removing an organic solvent in clear waste water at an upper layer and pumping the clear waste water into the spraying circulating water for reuse.
Description
technical field [0001] The invention belongs to the field of wastewater treatment engineering, in particular to a method for removing viscous paint in sprayed circulating water. Background technique [0002] At present, various items used in people's lives are mostly sprayed. Through reasonable changes in the composition of the spray paint, it can not only beautify the items, but also play the role of anti-oxidation, moisture-proof, and anti-corrosion to a certain extent. Therefore, painting devices are widely used in various factories. A large amount of overspray paint mist and organic solvent waste gas generated during the spraying process of the workpiece are absorbed by the circulating water and then added with flocculants, and the paint waste formed after the organic waste gas and overspray paint mist fully contact with the circulating water will be discharged together with the circulating water. If paint waste is not disposed of in time, it will reduce the service lif...
Claims
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IPC IPC(8): C02F1/40
Inventor 李振峰
Owner 江苏佳有环保科技有限公司