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Zero drainage circulation ultilization process and equipment of electroplate waste water

A technology of electroplating wastewater and zero discharge, applied in the direction of electrolysis process, electrolysis components, cells, etc., to achieve the effect of small investment, overcome high energy consumption, and occupy a small area

Inactive Publication Date: 2011-06-29
王俊川
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to overcome many problems of the existing electroplating wastewater treatment methods, thereby providing a zero-discharge cycle of electroplating wastewater with small footprint, zero discharge of heavy metals, recyclable and reuse of heavy metals and water for electroplating, and low energy consumption Use of technology and equipment

Method used

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  • Zero drainage circulation ultilization process and equipment of electroplate waste water
  • Zero drainage circulation ultilization process and equipment of electroplate waste water

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Embodiment Construction

[0018] Refer below figure 1 A specific embodiment of the present invention will be described.

[0019] The zero-discharge recycling equipment for electroplating wastewater mainly includes a collection tank 3 , a pretreatment module 5 , a membrane module 7 , and an evaporator 11 . The collection tank 3 is connected to the electroplating rinse tank 2 through an overflow pipe 15 for collecting the electroplating waste water produced by the electroplating rinse tank 2 . The entrance of pretreatment assembly 5 is connected with collection tank 3 by pipeline, and booster pump 4 is provided in this pipeline, and this pretreatment assembly 5 is the serial combination of activated carbon filtration assembly, microfiltration membrane assembly, ultrafiltration membrane assembly, for Preliminary separation is performed on the electroplating wastewater in the collection tank 3, and small molecular weight organic matter and suspended matter are intercepted. The inlet of the membrane modul...

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Abstract

The invention relates to electroplating waste water zero discharging recycling technology that includes the following steps: pre-treating to the electroplating waste water; separating the heavy metal; vaporizing and condensing to make the liquid achieve the thickness needed by electroplating. The device includes collecting groove, pre-treating component and evaporator. The invention could realizethe zero discharging of heavy metal and have saving and environment protecting effects.

Description

technical field [0001] The invention relates to the treatment of electroplating wastewater, specifically refers to the process and equipment for recovering and recycling heavy metals and water in the combination of separation and concentration by membrane method and evaporation and concentration, so as to realize zero discharge of heavy metals. Background technique [0002] A considerable amount of rinsing wastewater is discharged during the electroplating production process. Sometimes due to the filtration of the plating solution, the discarding of the plating solution and the reasons of running, running, dripping and leaking, some high-concentration plating solutions may be discharged. These wastewater or electroplating solutions contain many harmful or toxic substances, the most common ones are chromium, nickel, copper, zinc, hydrogen and so on. The wastewater and electroplating solution of some electroplating workshops also contain tin, cadmium, gold, silver, phosphate,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D21/16
Inventor 王俊川
Owner 王俊川
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