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Method for Treating Nickel-Containing/Copper-Containing Electroplating Wastewater Using Weak Acid Ion Exchange Fiber

An ion-exchange fiber, electroplating wastewater technology, applied in ion-exchange water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. , to achieve the effect of fast desorption rate, large adsorption capacity and high efficiency

Inactive Publication Date: 2015-11-04
佛山市中耀卓邦企业管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been reports on the adsorption performance of nickel-containing wastewater by using strong and weak acid ion exchange fibers, but most of them are limited-bath and single-column adsorption processes under laboratory conditions. There are differences in wastewater, and the amount of wastewater treated is small

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  • Method for Treating Nickel-Containing/Copper-Containing Electroplating Wastewater Using Weak Acid Ion Exchange Fiber
  • Method for Treating Nickel-Containing/Copper-Containing Electroplating Wastewater Using Weak Acid Ion Exchange Fiber
  • Method for Treating Nickel-Containing/Copper-Containing Electroplating Wastewater Using Weak Acid Ion Exchange Fiber

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Embodiment 1

[0033] The present invention uses a method for treating nickel-containing electroplating wastewater by using weak acid ion exchange fibers (in this method, the ion exchange fibers are subjected to 200 adsorption regenerations). The detailed steps of the treatment method are as follows:

[0034] a. Pretreatment of nickel-containing electroplating wastewater: firstly, the electroplating wastewater is allowed to stand and settle to remove suspended solids and particulate solid impurities in the wastewater; the concentration of nickel in the original nickel-containing electroplating wastewater is 210.2mg / L, and the electroplating wastewater after treatment pH is 6;

[0035] b. Pretreatment of weak acid ion exchange fiber: Wetly load 2g of weak acid ion exchange fiber (the weak acid ion exchange fiber is an ion exchange fiber prepared according to the technical scheme of Patent No. 200410060275. 0) into a Φ10×300mm ion exchange column, and then Use the sodium hydroxide solution with a c...

Embodiment 2

[0043] The present invention utilizes weak acid ion exchange fiber to treat nickel ion-containing electroplating wastewater. The detailed steps of the treatment method are as follows:

[0044] a. Pretreatment of nickel-containing electroplating wastewater: firstly, the electroplating wastewater is allowed to stand for precipitation to remove suspended solids and particulate solid impurities in the wastewater; then use sodium hydroxide solution to adjust the electroplating wastewater after impurities are removed, and adjust the pH of the electroplating wastewater to 6.5;

[0045] The concentration of nickel in the original nickel-containing electroplating wastewater is 197.55 mg / L, the concentration of calcium is 52.9 mg / L, and the concentration of magnesium is 31.4 mg / L;

[0046] b. Pretreatment of weak acid ion exchange fiber: 1.39g weak acid ion exchange fiber (the weak acid ion exchange fiber is an ion exchange fiber prepared according to the technical scheme of Patent No. 2004100...

Embodiment 3

[0055] The present invention uses weak acid ion exchange fiber to treat nickel-containing electroplating wastewater. The detailed steps of the treatment method are as follows:

[0056] a. Pretreatment of electroplating wastewater: First, the electroplating wastewater is allowed to stand and settle to remove suspended solids and particulate solid impurities in the wastewater;

[0057] The concentration of nickel in the original nickel-containing electroplating wastewater is 30-40mg / L, the concentration of calcium is 0-10mg / L, the concentration of magnesium is 0-10mg / L, and the pH is 6-7;

[0058] b. Pretreatment of weak acid ion exchange fiber: Weigh 1.5146g of weak acid ion exchange fiber (the weak acid ion exchange fiber is an ion exchange fiber prepared in accordance with the technical scheme of Patent No. 200410060275. 0) wet-processed and installed on a Φ10×300mm ion exchange column , And then use the sodium hydroxide solution with a concentration of 1mol / L to pass through the io...

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Abstract

The present invention discloses a method for treating nickel / copper-containing electroplating wastewater by using weak acid ion exchange fibers. The method comprises: carrying out a pre-treatment on electroplating wastewater; filling fibers in an ion exchange column to carry out treatment transformation to obtain a treated ion exchange column, wherein the original fibers are transformed into the Na type fibers; connecting 1-4 treated ion exchange columns in series to form an ion exchange system; introducing the treated electroplating wastewater into the ion exchange system to carry out an absorption treatment, and directly discharging when the metal ion concentration in the effluent is less than 0.5 mg / L; adjusting the flow rate of the wastewater to make the first absorption column achieve a saturated state when the wastewater penetrates through the last absorption column, and carrying out elution regeneration recycling on the saturated absorption column; and carrying out absorption cycle operation. According to the present invention, the method is the process method for quickly and efficiently removing heavy metal ions in electroplating wastewater and concurrently obtaining a high purity and high concentration eluent, and the obtained eluent can be used for electrolysis so as to obtain zero-valent metal nickel / copper.

Description

technical field [0001] The invention relates to a treatment method for electroplating wastewater, in particular to a method for treating nickel / copper-containing electroplating wastewater by using weak acid ion exchange fibers. Background technique [0002] The source of electroplating wastewater: the general electroplating production process is composed of three parts: electroplating pre-treatment process, electroplating process and electroplating post-treatment process. Each process has wastewater to a certain extent. Among them, the plating piece rinsing wastewater in the electroplating production process is electroplating One of the main sources of wastewater, accounting for about 80% of workshop wastewater discharge. [0003] The necessity of treating electroplating wastewater: heavy metals are difficult to degrade in nature, and have strong concealment and enrichment. Irrigation of farmland with wastewater containing heavy metals will affect the yield and quality of cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/42C02F9/04
Inventor 原思国张捷宋艳阳代立波惠跟雷冯俊波
Owner 佛山市中耀卓邦企业管理有限公司