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Printing ink sewage treatment technology

A technology for treating process and sewage, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of difficult degradation by biological methods, high chroma of COD value, and poor effect and other problems, to achieve the effect of simple operation, reduced processing costs, and low cost

Inactive Publication Date: 2015-09-09
ANHUI SHUNTONG PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Water-based ink will produce a lot of sewage in the process of production and application. The main components of these sewage are acrylic resin, hydrophilic pigments and some other additives, so water-based ink sewage has a higher COD value and higher chroma , if discharged directly into the environment, it will cause serious environmental pollution
At present, in the treatment of water-based ink sewage, the effect of some conventional methods is not very good, and the treatment cost is high and the treatment is difficult. Especially for the treatment of sewage chroma, commonly used biological methods are difficult to degrade

Method used

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Examples

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Embodiment

[0013] Preferred embodiments of the present invention will be described in detail below.

specific Embodiment approach

[0014] A specific embodiment of the treatment process of ink sewage in the present invention: a treatment process of ink sewage, including the following process steps: (1), pretreatment: pour the ink sewage into the adjustment tank, and add coagulant And flocculant, stirred into a colloid; (2), activation treatment: put the colloid in the electrolytic cell for projection and precipitate the suspended matter to obtain the sediment; (3), neutralize the sediment: put the sediment into the pool, adjust pH until the pH is 7~8. In the step (1): the process of adding the coagulant is carried out in the fast mixing tank, and the process of adding the flocculant is carried out in the slow mixing tank. The sediment is allowed to stand between the step (2) and the step (3) for 2-3 hours.

[0015] After the above process steps, the treated yomo sewage meets the requirements of the first-level discharge standard of the national comprehensive sewage discharge standard (GB8978-1996), and re...

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PUM

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Abstract

The invention discloses a printing ink sewage treatment technology. The technology comprises the following steps: 1, pre-treating; 2, activating; and 3, neutralizing a sediment. The technology is simple to operate, meets the wastewater decoloring requirement, removes above 98% of organic matters, has a very high removal rate of the chroma and COD of printing ink sewage, greatly reduces the treatment cost by treating wastes through using wastes, has very high production application values, and does not need a large amount of chemical agents, so the increase amount of total dissolved solids of the wastewater is limited, the reuse of wastewater reclaimed water reaching standards is facilitated, the cost is low, and the national resource is effectively saved.

Description

technical field [0001] The invention relates to the field of ink treatment, in particular to a process for treating ink sewage. Background technique [0002] Ink is an important material for printing. It expresses patterns and characters on the substrate through printing. Ink is generally composed of pigments, binders, solvents and additives. These components are evenly mixed and rolled repeatedly to form a viscous colloidal fluid. Ink is widely used in various printings such as books, periodicals, packaging and decoration, architectural decoration, etc. With the increase of social demand, the variety and output of ink have also expanded and increased accordingly. Water-based ink is a new type of green printing material. It uses water as a solvent and contains very little organic solvent. It has the characteristics of non-flammability, no residue, and no harm to the human body, so it is widely used in the printing industry. [0003] Water-based ink will produce a lot of se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06
Inventor 李东霖
Owner ANHUI SHUNTONG PACKAGING MATERIAL
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