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Treatment method of copper-containing waste liquid

A treatment method and waste liquid technology, applied to the improvement of process efficiency, photographic technology, instruments, etc., can solve the problems of rising raw material prices, biological toxicity hazards, and increased cost of outsourcing waste liquid treatment, so as to reduce treatment costs Effect

Inactive Publication Date: 2015-04-29
UNIMICRON TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, hydrazine is toxic to organisms. In recent years, international awareness of environmental protection has increased, and the management of pollution related to environmental protection has become increasingly stringent. In addition to the high dosage of liquid alkali and coagulant aids required for the original waste liquid, the price of raw materials Increasingly, the cost of waste liquid outsourcing treatment also increases

Method used

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  • Treatment method of copper-containing waste liquid
  • Treatment method of copper-containing waste liquid

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Embodiment Construction

[0021] figure 1 It is a schematic flow chart of treating copper-containing waste liquid according to an embodiment of the present invention. figure 2 for figure 1 A block diagram of the equipment used in the treatment of copper-containing waste liquid.

[0022] Below, will be figure 1 and figure 2 The method for treating copper-containing waste liquid in one embodiment will be described in detail.

[0023] Please also refer to figure 1 and figure 2 , proceed to step S10, reacting the hydrazine-containing waste liquid with the acidic copper-containing waste liquid to form a mixed liquid containing copper colloidal powder. In the above steps, for example, the hydrazine-containing waste liquid and the acidic copper-containing waste liquid are mixed in the reaction tank 100 . Specifically, during the step S10, the copper ions in the acidic copper-containing waste liquid are reduced and precipitated through the reducing hydrazine in the hydrazine-containing waste liquid, ...

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Abstract

The invention provides a treatment method of a copper-containing waste liquid. The treatment method comprises the following steps: reacting a diamine-containing waste liquid with an acidic copper-containing waste liquid to form a mixed liquid containing colloidal copper powder; performing aggregation treatment on the colloidal copper powder in the mixed liquid containing the colloidal copper powder, thereby forming a solution containing the copper metal solid.

Description

technical field [0001] The invention relates to a treatment method for waste liquid, and in particular to a treatment method for acidic copper-containing waste liquid. Background technique [0002] In the printed circuit board industry, hydrazine-containing waste liquid and acidic copper-containing waste liquid are one of the common hazardous wastes. Due to the low recovery value of hydrazine-containing waste liquid and acidic copper-containing waste liquid, and the easy production of copper chelates in hydrazine-containing waste liquid and acidic copper-containing waste liquid, it is difficult to control the discharge of copper-containing wastewater. The industry uses incineration or chemical methods to dispose of the above-mentioned waste liquid. [0003] However, hydrazine is toxic to organisms. In recent years, international awareness of environmental protection has increased, and the management of pollution related to environmental protection has become increasingly st...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B15/00C25C1/12
CPCY02P10/20
Inventor 廖本卫张樱喻李宗其康雅评
Owner UNIMICRON TECH CORP