Banknote printing gravure ink wastewater treatment process

A technology for gravure printing ink and wastewater treatment, applied in water/sewage treatment, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc. Production and other issues, to achieve the effect of benefiting cost control, shortening processing costs, and reducing equipment corrosion
CN111470651APending Publication Date: 2020-07-31西安水牧环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西安水牧环境科技有限公司
Publication Date
2020-07-31

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Abstract

The invention provides a banknote printing gravure ink wastewater treatment process, and belongs to the field of hazardous wastewater treatment. The wastewater treatment process comprises the following steps: a raw material storage and conveying process, a wastewater pretreatment process, a pretreated wastewater transiting process, a solid-liquid separation process, a wastewater final post-treatment process and a post-hazardous wastewater treatment process. The ink wastewater solid residues treated by the method basically do not contain water, and are treated as hazardous wastes, the volume and mass are greatly reduced, the treatment cost is reduced therefore, leakage during the transportation process is prevented, the environment is protected, and the safety is guaranteed. The SS contentof the treated filtrate is low, various indexes are reduced, and the processed wastewater can be discharged into a factory water treatment master station. The separated liquid meets the discharge requirements, added calcium chloride reduces the content of chloride ions in water, the corrosion to equipment is reduced, the environment is not polluted, the pH value of the treated liquid is reduced, the COD is reduced, and the subsequent water treatment cost is also reduced.
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Description

technical field

[0001] The invention belongs to the technical field of hazardous waste sewage treatment, and in particular relates to a process for treating banknote printing gravure printing ink wastewater. Background technique

[0002] At present, the closest existing technology: With the increasingly severe domestic environmental protection, the requirements for wastewater treatment are getting higher and higher. The concentrated waste liquid mainly contains ink components, with a solid content of 8%-13%. Since the waste liquid is strongly alkaline and contains surfactants, the ink is extremely stable in the waste liquid and is not easy to be disposed of. Its high PH, COD, NH3-N, Tp, etc. can not achieve rapid solid-liquid separation with traditional treatment processes and methods, the separated liquid can be discharged, and the solid residue can basically contain no water.

[0003] In recent years, environmental protection requirements have become more and more stringe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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