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Zero-discharge treatment process and device for printed circuit board developing wastewater

A printed circuit board and treatment device technology, which is applied in the field of zero-discharge treatment process and device of printed circuit board development wastewater, can solve the problems of increasing the difficulty of mixed wastewater treatment and exceeding the COD standard, and achieves good environmental protection benefits, prolongs service life, and improves reliability. biochemical effects

Active Publication Date: 2015-01-07
YANGZHOU INGREENTREE ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the agglomerated membrane removed by general acidification and press filtration only accounts for 40-50% of the total COD of the raw wastewater, and the COD content in the filtrate is still as high as several thousand. Discharging into the mixed wastewater pool naturally increases the difficulty of mixed wastewater treatment, and often Make the COD after treatment exceed the standard, so it is very necessary to further treat the effluent after demulsification

Method used

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  • Zero-discharge treatment process and device for printed circuit board developing wastewater
  • Zero-discharge treatment process and device for printed circuit board developing wastewater
  • Zero-discharge treatment process and device for printed circuit board developing wastewater

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Embodiment 1

[0039] A zero-discharge treatment device for printed circuit board developing wastewater in this embodiment, such as Figure 2-6 As shown, it consists of a microfiltration device, a primary reverse osmosis device, a secondary reverse osmosis device, a seawater desalination device, and an acidification-iron-carbon micro-electrolysis device. The circulation tank 2 and the microfiltration filter 3; the first-level reverse osmosis device comprises a first-level reverse osmosis circulation tank 4 and a first-level reverse osmosis filter 5 connected by pipelines; the second-level reverse osmosis device comprises a pH adjustment tank 6, The secondary reverse osmosis circulation tank 7, the secondary reverse osmosis filter 8 and the water reuse tank 9; the seawater desalination device includes a seawater desalination circulation tank 10 and a seawater desalination filter 11 connected by pipelines; the acidification-iron-carbon micro-electrolysis device includes sequentially setting Ac...

Embodiment 2

[0046] Utilize the device of embodiment 1 to carry out the process of zero discharge treatment to 10 batches of printed circuit board developing waste water, as figure 1 shown, including the following steps:

[0047] (1) Collect the printed circuit board developing wastewater into the developing wastewater collection tank, start the microfiltration device, make the printed circuit board developing wastewater enter the microfiltration circulation tank, and then pass through the microfiltration filter for cross-flow filtration to obtain fresh water A and concentrated water A1, Concentrated water A1 is returned to the ultrafiltration circulation tank through the circulation loop for circulation and concentration, the final concentrated water A is sent to the filter press, and after being compressed by the filter press, the water is discharged to the ultrafiltration circulation tank, and the sludge after filtration is outsourced. , the fresh water A enters the primary reverse osmo...

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Abstract

The invention belongs to the technical field of sewage treatment and discloses a zero-discharge treatment process and device for printed circuit board developing wastewater. The treatment device is composed of a microfiltration device, a primary reverse osmosis device, a secondary reverse osmosis device, a sea water desalting device and an acidification-iron-carbon micro-electrolysis device. The device is adopted to treat printed circuit board developing wastewater mainly in a physical separation way and basically no agent is utilized in the whole process; the whole device is integrated by connecting the filtering devices in a series connection or parallel connection way, is capable of operating continuously and automatically, and has excellent economic benefit; and the treatment process is capable of realizing wastewater zero discharge and has excellent environmental protection benefit.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a zero-discharge treatment process and device for printed circuit board developing wastewater. Background technique [0002] Printed circuit boards produce stripping wastewater and developing wastewater in the process of image transfer. Because stripping wastewater and developing wastewater have similar properties, they are often classified into one category for discussion. This type of wastewater is alkaline, and because the wastewater contains a large amount of dissolved photosensitive film, the COD is as high as several thousand to tens of thousands. Analyze the main components in wastewater, mostly organic matter, the main organic compounds are organic acids, aldehydes, esters, amines, aromatic ketones, acid anhydrides and other 11 categories, including 1-methoxyisopropanol, Acrylic acid, 2-methacrylic acid, benzoic acid and other 45 compounds. Among th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06
CPCY02A20/131C02F9/00C02F1/441C02F1/444C02F1/4604C02F2001/46133C02F2103/08C02F2103/346
Inventor 林楚佳叶昌宏张峰林敏欧仁勇巫世文李家泉张汝嘉彭军廖利明
Owner YANGZHOU INGREENTREE ENVIRONMENTAL TECH CO LTD
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