Treatment method of printing ink wastewater generated in circuit board production

A technology for ink wastewater and treatment methods, which is applied in water/sewage treatment, illuminated water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of membrane pollution, poor effect, difficult treatment, etc., and achieve reduction of membrane pollution and efficiency High, the effect of improving the service life

Active Publication Date: 2014-05-14
GUANGDONG VICDI TECH +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In the prior art, there is a combined process of "solid-liquid separation system + internal electrolysis system + biochemical system" to treat ink wastewater generated by water-based printing, and there is also a combination of "coagulation + filter press + membrane filtration + advanced treatment + waste liquid recovery" Process treatment of ink wastewater in the carton packaging industry. However, the composition and treatment methods of ink wastewater in various industries are different, and the treatment effects are also different. The ink-containing wastewater generated in the production process of circuit boards is difficult to treat. Industrial wastewater, its COD, SS, high chroma, poor biodegradability
The coagulation process used in the prior art cannot satisfy the ink-containing wastewater generated in the circuit board production process. If only the coagulation process of the prior art is used, it is not only difficult to remove the suspended ink and other insoluble inks in the wastewater. Macromolecular organic matter, and has a greater impact on the subsequent solid-liquid separation process, that is, the filter press effect, and at the same time, it is more likely to cause membrane fouling, i.e. membrane clogging, etc. in the subsequent membrane filtration process, which is not conducive to the long-term operation and operation of the wastewater treatment process. The maintenance of equipment leads to low efficiency and poor effect of wastewater treatment; in addition, in the process of comprehensive wastewater treatment, the degradation of macromolecular organic matter is also a major problem in wastewater treatment. How to ensure the effective degradation of macromolecular organic matter while effectively preventing the Membrane fouling caused by subsequent membrane filtration makes the entire wastewater treatment process more sustainable and sustainable, which is an important problem that needs to be solved urgently in the prior art

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  • Treatment method of printing ink wastewater generated in circuit board production
  • Treatment method of printing ink wastewater generated in circuit board production
  • Treatment method of printing ink wastewater generated in circuit board production

Examples

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Embodiment 1

[0024] A method for treating ink wastewater produced by circuit boards, comprising the steps of:

[0025] S1. Raw water collection pool: firstly, import the raw water of circuit board production ink wastewater into the raw water collection pool for water quality balance, and then pump it into S2, reaction pool;

[0026] S2. Reaction tank: The wastewater after the water quality balance in the raw water collection tank is adjusted in the reaction tank to make the pH value of the wastewater 3.0. At the same time, a coagulant is added to the reaction tank. The amount of the coagulant added is 3mg / L; the coagulant is powdered activated carbon particles, the fineness of the powdered activated carbon particles is 130-200 mesh, stirred and mixed to form a mud-water mixture of flocs;

[0027] S3, filter press: use a pump to send the mud-water mixture in the reaction tank into the plate-and-frame filter press, perform solid-liquid separation on the mud-water mixture, transport the filt...

Embodiment 2

[0037] A method for treating ink wastewater produced by circuit boards, comprising the steps of:

[0038] S1. Raw water collection pool: firstly, import the raw water of circuit board production ink wastewater into the raw water collection pool for water quality balance, and then pump it into S2, reaction pool;

[0039] S2. Reaction tank: The wastewater after the water quality balance in the raw water collection tank is adjusted in the reaction tank to make the pH value of the wastewater 2.6. At the same time, a coagulant is added to the reaction tank. The amount of the coagulant added is 4mg / L; the coagulant is a mixture of powdered activated carbon particles, aluminum sulfate, and ferrous sulfate, and the mass ratio of each component is powdered activated carbon particles: aluminum sulfate: ferrous sulfate=1:1:1, the powdery The fineness of activated carbon particles is 130-200 mesh, stirring and mixing to form a mud-water mixture of flocs;

[0040] S3, filter press: use a...

Embodiment 3

[0050] A method for treating ink wastewater produced by circuit boards, comprising the steps of:

[0051] S1. Raw water collection pool: firstly, import the raw water of circuit board production ink wastewater into the raw water collection pool for water quality balance, and then pump it into S2, reaction pool;

[0052] S2. Reaction tank: The wastewater after the water quality balance in the raw water collection tank is adjusted in the reaction tank to make the pH value of the wastewater 2.9. At the same time, a coagulant is added to the reaction tank. The amount of the coagulant added is 5mg / L; the coagulant is formed by mixing powdered activated carbon particles and ferric chloride at a mass ratio of 1:1, the fineness of the powdered activated carbon particles is 130-200 mesh, stirred and mixed to form a mud-water mixture of flocs ;

[0053] S3, filter press: use a pump to send the mud-water mixture in the reaction tank into the plate-and-frame filter press, perform solid-...

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Abstract

The invention discloses a treatment method of printing ink wastewater generated in circuit board production. The treatment method comprises the following steps: firstly guiding printing ink raw wastewater generated in circuit board production into a raw water collecting tank, carrying out water quality equalization, then pumping into a reaction tank in the step two, coagulating so as to form muddy water mixed liquid of flocs, feeding the muddy water mixed liquid into a plate-and-frame filter press, carrying out solid-liquid separation, pumping filtrate into a Fenton oxidization/ultraviolet tank in the step four, carrying out oxidative degradation, electrolyzing, entering the electrolyzed wastewater to a membrane filtration device, and further carrying out biochemical treatment on the wastewater filtered by using a membrane. The treatment method can be used for effectively removing COD, ammonia nitrogen, total phosphorus and heavy metals in the printing ink wastewater generated in circuit board production, effectively preventing membrane pollution, continuously and effectively carrying out wastewater treatment and ensuring the final discharged water of the printing ink wastewater generated in circuit board production to meet the primary standards of Guangdong province water pollutant emission limits (DB44/26-2001).

Description

technical field [0001] The invention relates to the technology in the field of wastewater treatment, in particular to a method for treating ink wastewater produced by circuit boards. Background technique [0002] At present, the methods of ink wastewater treatment mainly include electrochemical method, coagulation sedimentation method, ultrafiltration method, biochemical method and other methods and their combination processes. In the prior art, there is a combined process of "solid-liquid separation system + internal electrolysis system + biochemical system" to treat ink wastewater generated by water-based printing, and there is also a combination of "coagulation + filter press + membrane filtration + advanced treatment + waste liquid recovery" Process treatment of ink wastewater in the carton packaging industry. However, the composition and treatment methods of ink wastewater in various industries are different, and the treatment effects are also different. The ink-contain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/32C02F1/72C02F1/461C02F1/44
Inventor 张燕厚吕斯濠梁继业梁志辉曾燕艳范洪波
Owner GUANGDONG VICDI TECH
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