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Processing method of waste water generated in printing ink plastic package container cleaning

A technology for plastic packaging and wastewater treatment, applied in water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. Reduced disposal cost, easy removal effect

Inactive Publication Date: 2019-09-06
珠海市安能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the cleaning of ink plastic packaging containers is basically aimed at cleaning a single type of ink packaging container. The pollutants and pH values ​​of the cleaning wastewater obtained in this way are not the same, and the subsequent treatment is also very different. The physical and chemical advanced treatment of cleaning wastewater cannot be carried out, and no reusable resources can be obtained
This leads to complex processing methods in the whole process, and more additives are used, resulting in waste

Method used

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  • Processing method of waste water generated in printing ink plastic package container cleaning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A wastewater treatment method for cleaning ink plastic packaging containers, comprising the following steps:

[0029] 1) Take the material, heat soak and clean the UV ink plastic packaging tank to obtain alkaline wastewater, and heat soak and clean the water-based ink plastic packaging barrel to obtain acid wastewater;

[0030] 2) Mix, inject the above alkaline wastewater and acid wastewater into the neutralization reaction tank and mix until uniform;

[0031] 3) Acid precipitation and precipitation, add 10% H to the mixed wastewater 2 SO 4 dilute acid, adjust the pH to 3, then add bentonite, stir and react to obtain a solid-liquid mixture;

[0032] 4) Press filtration, pump the obtained solid-liquid mixture into a filter press for solid-liquid separation, and obtain filter residue and primary filtrate respectively, wherein the filter residue is filter residue containing ink pigment, and the primary filtrate is resin filtrate containing ink ;

[0033] 5) filter resi...

Embodiment 2

[0041] A wastewater treatment method for cleaning ink plastic packaging containers, comprising the following steps:

[0042] 1) Take the material, heat soak and clean the UV ink plastic packaging tank to obtain alkaline wastewater, and heat soak and clean the water-based ink plastic packaging barrel to obtain acid wastewater;

[0043] 2) Mix, inject the above alkaline wastewater and acid wastewater into the neutralization reaction tank and mix until uniform;

[0044] 3) Acid precipitation, adding hydrochloric acid to the mixed wastewater, adjusting the pH to 3, then adding bentonite, stirring and reacting to obtain a solid-liquid mixture;

[0045] 4) Press filtration, pump the obtained solid-liquid mixture into a filter press for solid-liquid separation, and obtain filter residue and primary filtrate respectively, wherein the filter residue is filter residue containing ink pigment, and the primary filtrate is contain ink resin filtrate;

[0046] 5) filter residue treatment, d...

Embodiment 3

[0052] A wastewater treatment method for cleaning ink plastic packaging containers, comprising the following steps:

[0053] 1) Take the material, heat soak and clean the UV ink plastic packaging tank to obtain alkaline wastewater, and heat soak and clean the water-based ink plastic packaging barrel to obtain acid wastewater;

[0054] 2) Mix, inject the above alkaline wastewater and acid wastewater into the neutralization reaction tank and mix until uniform;

[0055] 3) Acid precipitation and precipitation, add 10% H to the mixed wastewater 2 SO 4 dilute acid, adjust the pH to 4, then add bentonite, stir and react to obtain a solid-liquid mixture;

[0056] 4) Press filtration, pump the obtained solid-liquid mixture into a filter press for solid-liquid separation, and obtain filter residue and primary filtrate respectively, wherein the filter residue is filter residue containing ink pigment, and the primary filtrate is contain ink resin filtrate;

[0057] 5) filter residue...

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Abstract

The invention discloses a processing method of waste water generated in printing ink plastic package container cleaning. The processing method comprises following steps: material collecting and processing, neutralizing adjusting, plate-frame pressure filtration, flocculation deposition, filter residue drying, Electro-Fenton processing, and the like. According to the processing method, the processing technology is stable; less pollution is generated in or after processing technology; water source is saved; the product obtained through processing can be recycled; and resource full utilization isrealized.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a waste water treatment method for cleaning ink plastic packaging containers. Background technique [0002] Liquid photosensitive solder resist inks, UV inks and water-based inks used in PCB (printed circuit board) manufacturing and printing and packaging industries will produce waste packaging after use, and waste water will also be generated when cleaning such waste, and the cleaning waste water contains a lot of Toxic and harmful substances, and included in the 2016 edition of the "National Hazardous Waste List" HW12 category 900-256-12 and HW13 category 900-016-13 items. [0003] In the existing technology, the cleaning of ink plastic packaging containers is basically aimed at cleaning a single type of ink packaging container. The pollutants and pH values ​​of the cleaning wastewater obtained in this way are not the same, and the subsequent treatment...

Claims

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Application Information

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IPC IPC(8): C02F9/06
CPCC02F1/001C02F1/4672C02F1/5236C02F1/66C02F9/00
Inventor 狄旭东
Owner 珠海市安能环保科技有限公司
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