Treatment method of copper-containing industrial wastewater

A technology for industrial wastewater and treatment methods, which is applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as inability to separate in depth, limit applications, and insufficient treatment, and achieve wastewater Good treatment effect, more precipitation generation, good use effect

Inactive Publication Date: 2014-10-08
福建联鑫环境工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional chemical reduction-precipitation method needs to add chemical agents, which has serious secondary pollution problems. At the same time, this method can only treat copper ion wastewater to a certain extent, and cannot deionize deeply. Generally, it needs to be combined with subsequent processes; the adsorption method requires Choosing a suitable adsorbent is generally only used to treat trace amounts of low-concentration wastewater, and the above two methods all have the problem of difficulty in recycling copper ions; membrane separation methods include electrodialysis, reverse osmosis and electrodeionization, etc., but this The method has high requirements on the membrane, and the cost is high and uneconomical
Alth

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  • Treatment method of copper-containing industrial wastewater

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Effect test

Embodiment 1

[0021] Embodiment 1 A kind of treatment method of copper-containing industrial wastewater

[0022] A treatment method for copper-containing industrial wastewater, comprising the steps of:

[0023] 1) Iron-carbon micro-electrolysis: adjust the pH of the copper-containing industrial wastewater to 2.0, add iron-carbon micro-electrolysis particles to the copper-containing wastewater, and react for 3 hours; wherein the preparation method of the iron-carbon micro-electrolysis particles is: by weight Accurately weigh 40 parts of iron filings, 20 parts of activated carbon, 10 parts of fly ash, 4 parts of ferrous sulfate, 5 parts of diatomaceous earth, 3 parts of quicklime, and 3 parts of magnesium chloride. Water glass, add 3 times the volume of water of the mixture mass and stir evenly, then extrude the mixture mechanically to obtain spherical particles with a diameter of 60mm, dry the spherical particles at 50°C for 3 hours after natural drying, and isolate the air sintering at 850...

Embodiment 2

[0027] Embodiment 2 A kind of treatment method of copper-containing industrial wastewater

[0028] A treatment method for copper-containing industrial wastewater, comprising the steps of:

[0029] 1) Iron-carbon micro-electrolysis: adjust the pH of the copper-containing industrial wastewater to 3.0, add iron-carbon micro-electrolysis particles to the copper-containing wastewater, and react for 5 hours; the preparation method of the iron-carbon micro-electrolysis particles is: by weight Accurately weigh 40 parts of iron filings, 20 parts of activated carbon, 10 parts of fly ash, 4 parts of ferrous sulfate, 5 parts of diatomaceous earth, 3 parts of quicklime, and 3 parts of magnesium chloride. Water glass, add water 3 times the volume of the mixture and stir evenly, then extrude the mixture mechanically to obtain spherical particles with a diameter of 60mm, dry the spherical particles at 100°C for 2 hours after natural drying, and isolate the air sintering at 1000° C. for 2 hou...

Embodiment 3

[0033] Embodiment 3 A kind of treatment method of copper-containing industrial wastewater

[0034] A treatment method for copper-containing industrial wastewater, comprising the steps of:

[0035] 1) Iron-carbon micro-electrolysis: adjust the pH of the copper-containing industrial wastewater to 2.5, add iron-carbon micro-electrolysis particles to the copper-containing wastewater, and react for 4 hours; wherein the preparation method of the iron-carbon micro-electrolysis particles is: by weight Accurately weigh 40 parts of iron filings, 20 parts of activated carbon, 10 parts of fly ash, 4 parts of ferrous sulfate, 5 parts of diatomaceous earth, 3 parts of quicklime, and 3 parts of magnesium chloride. Water glass, add 3 times the volume of water of the mixture mass and stir evenly, then extrude the mixture mechanically to obtain spherical particles with a diameter of 60mm, dry the spherical particles at 80°C for 3 hours after natural drying, and isolate the air sintering at 900...

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Abstract

The invention relates to a treatment method of copper-containing industrial wastewater and in particular relates to a treatment method for removing metal ions from copper-containing wastewater by adopting a combined process. In order to overcome the technical defects that the content of copper ions is relatively high and the treatment of other metal ions does not meet the standard in a copper-containing industrial wastewater treatment process in the prior art, the invention provides a treatment method of copper-containing industrial wastewater. The treatment method comprises four reaction steps of iron carbon microelectrolysis, catalytic oxidation, alkalization precipitation and acid-base neutralization. After the treatment, the content of the copper ions is remarkably lower than the national emission standard, and the content of other toxic ions also can meet the national emission standard, so that the treatment method is suitable for popularization and application in the copper-containing wastewater treatment industry.

Description

technical field [0001] The invention relates to a treatment method for copper-containing industrial wastewater, in particular to a treatment method for removing metal ions in copper-containing wastewater by a combined process. Background technique [0002] Chemical industry, printing and dyeing, electroplating, non-ferrous smelting, non-ferrous metal mining, electronic material rinsing wastewater, dye production and other processes often produce wastewater containing a large amount of copper ions. Due to the different processes of wastewater generation, the existence state, mass concentration and composition of copper ions in copper-containing wastewater are also different, and the differences are quite large. Pollutants in the copper-containing wastewater produced in the electroplating production process, such as copper sulfate, sulfuric acid, copper pyrophosphate, etc., have a mass concentration of 100mg / L and 50mg / L or less; copper-containing wastewater produced in the ci...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F101/20
Inventor 段希福
Owner 福建联鑫环境工程有限公司
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