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Method for treating heavy metal copper ions in industrial sewage by combined adsorbent

A technology of industrial sewage and copper ions, applied in water/sewage treatment, adsorption water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of limited adsorption capacity, weak force of metal ions and adsorbents, etc., to achieve Good adsorption and removal functions, important social and economic benefits, and the effect of overcoming high costs

Inactive Publication Date: 2019-10-11
TONGREN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal ions in heavy metal sewage are mainly adsorbed on the surface of these adsorbents through physical action, and the force between metal ions and adsorbents is weak, so the adsorption capacity is limited.

Method used

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  • Method for treating heavy metal copper ions in industrial sewage by combined adsorbent
  • Method for treating heavy metal copper ions in industrial sewage by combined adsorbent
  • Method for treating heavy metal copper ions in industrial sewage by combined adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for treating heavy metal copper ions with a combined adsorbent in industrial sewage is characterized in that it comprises the following steps:

[0029] (1) Preparation of adsorption carrier: Dissolve tofu chai pectin in deionized water, adjust the pH to 8 with sodium hydroxide solution, stir and hydrolyze for 10 minutes at room temperature;

[0030] (2) Magnetic separator Fe 3 o 4 Preparation: Take FeCl 3 •6H 2 O was dissolved in deionized water, and then transferred to a three-necked flask, and N was added dropwise under ultrasonic and stirring conditions. 2 H4•H 2 O, ultrasonic stirring continued after the dropwise addition; FeSO was added dropwise under ultrasonic 4 •7H 2 O solution, ultrasonically stirred at room temperature for 10 min; then NH was added dropwise to the solution 3 •H 2 O, adjust pH=9 with deionized water, then stir at room temperature for 30 min; after stirring, then carry out magnetic separation, wash the reaction product with deio...

Embodiment 2

[0033] A method for treating heavy metal copper ions with a combined adsorbent in industrial sewage is characterized in that it comprises the following steps:

[0034] (1) Preparation of adsorption carrier: Dissolve tofu chai pectin in deionized water, adjust the pH to 8 with sodium hydroxide solution, stir and hydrolyze at room temperature for 15 minutes;

[0035] (2) Magnetic separator Fe 3 o 4 Preparation: Take FeCl 3 •6H 2 O was dissolved in deionized water, and then transferred to a three-necked flask, and N was added dropwise under ultrasonic and stirring conditions. 2 h 4 •H 2 O, ultrasonic stirring continued after the dropwise addition; FeSO was added dropwise under ultrasonic 4 •7H 2 O solution, ultrasonically stirred at room temperature for 10 min; then NH was added dropwise to the solution 3 •H 2 O, adjust pH=9 with deionized water, then stir at room temperature for 30 min; after stirring, then perform magnetic separation, wash the reaction product with dei...

Embodiment 3

[0038] A method for treating heavy metal copper ions with a combined adsorbent in industrial sewage is characterized in that it comprises the following steps:

[0039] (1) Preparation of adsorption carrier: Dissolve tofu chai pectin in deionized water, adjust pH to 8 with sodium hydroxide solution, stir and hydrolyze at room temperature for 20 minutes;

[0040] (2) Magnetic separator Fe 3 o 4 Preparation: Take FeCl 3 •6H 2 O was dissolved in deionized water, and then transferred to a three-necked flask, and N was added dropwise under ultrasonic and stirring conditions.2 h 4 •H 2 O, ultrasonic stirring continued after the dropwise addition; FeSO was added dropwise under ultrasonic 4 •7H 2 O solution, ultrasonically stirred at room temperature for 10 min; then NH was added dropwise to the solution 3 •H 2 O, adjust pH=9 with deionized water, then stir at room temperature for 30 min; after stirring, then perform magnetic separation, wash the reaction product with deionized...

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Abstract

The invention discloses a method for treating heavy metal copper ions in industrial sewage by a combined adsorbent. The combined adsorbent is a pectin / Fe3O4 combined magnetic material. The method hasthe advantages that the adsorbent provided is economical and environmentally friendly and has good adsorption and removal effect on the copper ions, and the removal rate for 1.2mg / mL of metal copper ion sewage can reach more than 91.67%, so that the method can be widely applied to adsorption treatment of the copper ions in the high-concentration sewage, the defects in the prior art, such as high cost and low adsorption removal efficiency, are overcome, and the method has high social and economic benefits. The adsorption treatment method for the copper-ion-containing sewage includes the steps of (1) pretreatment of an adsorption carrier, (2) preparation of a magnetic separation agent, (3) selection of the feeding amount of the adsorption carrier, (4) selection of the feeding amount of the separation agent, (5) selection of the adsorption time and(6) selection of the adsorption frequency.

Description

technical field [0001] The invention relates to the field of heavy metal treatment in industrial sewage, in particular to a method for treating heavy metal copper ions in industrial sewage with a combined adsorbent. Background technique [0002] Chemical industry, printing and dyeing, electroplating, non-ferrous smelting, non-ferrous metal mining, electronic material rinsing sewage, dye production and other processes often produce sewage containing a large amount of copper ions. The copper content in copper-containing sewage is high, and direct discharge not only causes environmental pollution, but also is a waste of resources. Therefore, it is necessary to treat copper-containing sewage, recycle copper ions through technical means, and discharge after the water quality reaches the standard. [0003] Copper sewage treatment technologies include chemical precipitation, electrolysis, ion exchange, heavy metal chelating agent, membrane separation and replacement. Some of the a...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F9/12B01J20/24B01J20/28B01J20/30C02F101/20
CPCB01J20/06B01J20/24B01J20/28009B01J2220/46B01J2220/4806B01J2220/4825C02F1/281C02F1/286C02F1/48C02F2101/20
Inventor 姚元勇陈仕学何来斌袁利军
Owner TONGREN UNIV
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