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Copper-containing waste water treatment method based on magnetic adsorption agent

A magnetic adsorbent and wastewater treatment technology, applied in the field of water treatment, can solve problems such as copper content exceeding and sewage discharge standards, and achieve the effects of reduced copper ion content, convenient operation, and simple treatment methods

Inactive Publication Date: 2018-02-23
镇江市丹徒区华发五金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a copper-containing wastewater treatment method based on a magnetic adsorbent to solve the problem in the prior art that the copper content in the wastewater exceeds the national sewage discharge standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for treating copper-containing wastewater based on a magnetic adsorbent, comprising the following steps:

[0031] Step 1. Dissolve carboxymethyl cellulose in deionized water, stir ultrasonically for 10-20 min, add cyclohexaose, stir ultrasonically for 3 min, add NaOH, stir ultrasonically for 5 min, add a magnetic field of 0.8T, and continue the reaction for 1 h ;

[0032] Step 2, add FeCl to the solution obtained in step 1 3 ·6H 2 O, FeCl 2 ·4H 2 O and Fe 3 O 4 , ultrasonically stirred for 3 min, then heated to 30 °C, then added liquid paraffin, heated to 35 °C, and ultrasonically stirred for 1 min;

[0033] Step 3, adding NaOH solution to the solution obtained in step 2, ultrasonically stirring for 3min, then adding epichlorohydrin, ultrasonically stirring for 3h, standing for 5h, discarding the supernatant to obtain a gel for later use;

[0034] Step 4. Collect copper-containing wastewater: recycle the used industrial copper-containing wastewater, let ...

Embodiment 2

[0042] A method for treating copper-containing wastewater based on a magnetic adsorbent, comprising the following steps:

[0043] Step 1. Dissolve carboxymethyl cellulose in deionized water, stir ultrasonically for 105 min, add cyclohexaose, stir ultrasonically for 4 min, add NaOH, stir ultrasonically for 8 min, add a 1.0T magnetic field, and continue the reaction for 1-2 h ;

[0044] Step 2, add FeCl to the solution obtained in step 1 3 ·6H 2 O, FeCl 2 ·4H 2 O and Fe 3 O 4 , ultrasonically stirred for 4 min, then heated to 33 °C, then added liquid paraffin, heated to 50 °C, and ultrasonically stirred for 1 min;

[0045] Step 3, adding NaOH solution to the solution obtained in step 2, ultrasonically stirring for 4min, then adding epichlorohydrin, ultrasonically stirring for 3h, standing for 6h, discarding the supernatant to obtain a gel for later use;

[0046] Step 4. Collect copper-containing wastewater: recycle the used industrial copper-containing wastewater, let it ...

Embodiment 3

[0054] A method for treating copper-containing wastewater based on a magnetic adsorbent, comprising the following steps:

[0055] Step 1. Dissolve carboxymethylcellulose in deionized water, stir ultrasonically for 20 minutes, then add cyclohexaose, stir ultrasonically for 5 minutes, then add NaOH, stir ultrasonically for 10 minutes, apply a 1.2T magnetic field, and continue the reaction for 2 hours;

[0056] Step 2, adding FeCl to the solution obtained in step 1 3 ·6H 2 O, FeCl 2 4H 2 O and Fe 3 o 4 , ultrasonically stirred for 5 minutes, then heated to 35°C, then added liquid paraffin, heated to 70°C, and ultrasonically stirred for 2 minutes;

[0057] Step 3, adding NaOH solution to the solution obtained in Step 2, stirring ultrasonically for 5 minutes, then adding epichlorohydrin, stirring ultrasonically for 4 hours, standing for 7 hours, discarding the supernatant to obtain a gel for later use;

[0058] Step 4. Collect copper-containing wastewater: recycle the used in...

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Abstract

The invention discloses a copper-containing waste water treatment method based on a magnetic adsorption agent. The copper-containing waste water treatment method includes dissolving carboxymethyl celluloses in deionized water, and adding alpha-cyclodextrin and NaOH, and applying a magnetic field for reaction; adding FeCl3.6H2O, FeCl2.4H2O and Fe3O4 into the liquor, and adding liquid paraffin; adding a NaOH solution into the liqour, adding epichlorohydrin, and discarding supernate to obtain gel for standby use; collecting copper-containing waste water; recycling the used industrial copper-containing waste water, and naturally precipitating the used industrial copper-containing waste water to obtain supernate and sediments; adjusting the pH value of the supernate; adding the gel into the supernate, and applying a magnetic field for reaction; adsorbing copper ions in the copper-containing waste water by the gel. The copper-containing waste water treatment method has the advantages that the gel for adsorbing heavy metal is prepared at first, and then put into the copper-containing waste water to adsorb the copper ions in the copper-containing waste water; the treatment method is simpleand convenient to operate, the content of the copper ions in the industrial waste water treated by the treatment method is low, and national waste water discharge standards are met.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and particularly relates to a method for treating copper-containing wastewater based on a magnetic adsorbent. Background technique [0002] Industrial wastewater includes production wastewater, production sewage and cooling water. It refers to the wastewater and waste liquid generated in the industrial production process, which contains industrial production materials, intermediate products, by-products and waste generated in the production process. pollutants. [0003] Classified according to the products and processing objects of industrial enterprises, such as metallurgical wastewater, papermaking wastewater, coking gas wastewater, metal pickling wastewater, chemical fertilizer wastewater, textile printing and dyeing wastewater, dye wastewater, tanning wastewater, pesticide wastewater, power station wastewater, etc. [0004] One feature of industrial wastewater is that the water quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C02F1/28B01J20/28B01J20/30B01J20/24C02F101/20
CPCC02F9/00B01J20/06B01J20/22B01J20/24B01J20/28009B01J20/28047B01J2220/4825C02F1/28C02F1/36C02F1/48C02F1/66C02F2101/20
Inventor 邹卫国
Owner 镇江市丹徒区华发五金有限公司
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