Environment-friendly white board coating wastewater recovery treatment method

Abstract

The invention relates to a wastewater treatment technology, in particular to an environment-friendly white board coating wastewater recovery treatment method, which is used for solving the problems that electric flocculate cannot be treated in time and a common filter screen is easy to block when white board coating wastewater is treated. According to the device, flocculates generated in the recovery pool are cleaned in time through movement of the fishing net, the flocculates are effectively prevented from adsorbing all assemblies in the recovery pool, meanwhile, when the filter net arranged in the side direction is not used, the flowing speed of liquid in the recovery pool cannot be affected, and the components can be effectively recovered through the rising action of the fishing net. Flocculate collected from waste water by the fishing net is collected and treated in a centralized mode, recycling of metal ions in the flocculate is facilitated, through the main cleaning rod and the auxiliary cleaning rod, the net face of the fishing net is effectively cleaned, the fishing net is prevented from being blocked, the fishing effect of the flocculate is improved, and the service life of the fishing net is prolonged. And flocculates can be prevented from being secondarily dispersed into water when the fishing net returns to the wastewater again.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an environment-friendly method for recycling and treating wastewater from coated whiteboard paper. Background technique [0002] Coating wastewater mainly comes from the coating process of carbonless copy paper. In this production process, various pigments, color developers, adhesives, color formers, adhesives and other coatings are often added. The loss of these coatings in the production process makes the coating wastewater contain more refractory pollutants and a small amount of metal ions. Therefore, the coating wastewater is one of the more difficult industrial wastewaters to treat. At present, the main treatment technologies are as follows: Physicochemical method and biochemical method, among which physicochemical method has a relatively obvious removal effect on suspended solids in wastewater, which is conducive to further treatment. Therefore, physicochemical...

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Problems solved by technology

[0005] In the present invention, the flocs produced in the recovery pool are cleaned in time through the movement of the fishing net, thereby avoiding excessive accumulation of flocs in the recovery pool, effectively preventing the flocs from adsorbing each component in the recovery pool, preventing The situation of equipment jamming and blockage occurs, and at the same time, the filter installed sideways will not affect the liquid flow rate inside the recovery tank when it is not in use, which is conducive to the discharge of waste water after the treatment in the recovery tank is completed. Through the upward movement of the fishing net, The flocs collected by fishing nets from wastewater can be collected and processed in a centralized manner, which is conducive to the recovery and reuse of metal ions in the flocs, avoiding the pollution of metal ions to the environment, and realizing the recycling and reuse of metal ions, energy saving and environmental protection. Through the main cleaning rod and the auxiliary cleaning rod, the net surface of the fishing net can be effectively cleaned to avoid clogging of the fishing net, improve the fishing effect of flocs, and prevent the secondary dispersion of flocs when the fishing net returns to the wastewater To solve the problem that the electroflocculation cannot be processed in time and the ordinary filter is easy to block when the wastewater coated with whiteboard paper is treated, and an environmentally friendly wastewater treatment method for coated whiteboard paper is proposed

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