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Treating agent for treating electroplating wastewater containing heavy metal ions and preparation method thereof

A technology for heavy metal ions and electroplating wastewater, applied in metallurgical wastewater treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of ineffective removal of heavy metal ions in electroplating wastewater, difficult recycling of regeneration solution, and application effect No obvious problems, etc., to achieve the effect of good water quality, stable performance and convenient use

Inactive Publication Date: 2017-11-03
HUNAN VAUBAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of treatment and the difficulty of recycling the regeneration solution, the application effect is not obvious
The biological method has the advantages of high efficiency, strong selectivity, and large adsorption capacity, but currently has disadvantages such as low reaction efficiency, large consumption of medium, high treatment cost, residual organisms in the effluent can continue to reproduce, and cannot be directly reused.
Existing electroplating wastewater treatment agents cannot effectively remove heavy metal ions in electroplating wastewater. Therefore, developing a low-cost treatment agent that can effectively remove heavy metal ions in electroplating wastewater will have important market value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A treatment agent for treating electroplating wastewater containing heavy metal ions, made of the following raw materials in parts by weight: 15 parts of disodium edetate, 7 parts of starch xanthate, 30 parts of modified cross-linked rectorite, coke 18 parts of sodium sulfite, 46 parts of fly ash, 3 parts of ethylenediamine tetramethylene phosphonic acid, 14 parts of polyacrylamide, 2 parts of polyoxyethylene glyceryl ether, 5 parts of aminopropyl triethoxysilane, carboxymethyl starch Sodium 13 parts.

[0023] Wherein, the modified cross-linked rectorite is obtained through the following steps: crush the cross-linked rectorite, pass through an 80-mesh sieve, then calcinate at 350°C for 1 hour, cool naturally, add 15% citric acid aqueous solution of the same weight, Ball milling for 3 hours to obtain a slurry, add dropwise sodium hydroxide aqueous solution to the slurry, adjust the pH to 7.5, and then ultrasonically treat for 40min. After calcination at ℃ for 1 hour, it...

Embodiment 2

[0031] A treatment agent for treating electroplating wastewater containing heavy metal ions, made of the following raw materials in parts by weight: 16 parts of disodium edetate, 8 parts of starch xanthate, 31 parts of modified cross-linked rectorite, coke 21 parts of sodium sulfite, 49 parts of fly ash, 5 parts of ethylenediamine tetramethylene phosphonic acid, 15 parts of polyacrylamide, 3 parts of polyoxyethylene glyceryl ether, 7 parts of aminopropyl triethoxysilane, carboxymethyl starch Sodium 16 parts.

[0032] Wherein, the modified cross-linked rectorite is obtained through the following steps: crush the cross-linked rectorite, pass through a 90-mesh sieve, then calcinate at 360°C for 1.5h, cool naturally, and add 15% citric acid aqueous solution of the same weight , ball milling for 3 hours to obtain a slurry, add dropwise sodium hydroxide aqueous solution to the slurry, adjust the pH to 7.6, and then ultrasonically treat for 42min, the frequency of the ultrasonic trea...

Embodiment 3

[0040]A treatment agent for treating electroplating wastewater containing heavy metal ions, made of the following raw materials in parts by weight: 18 parts of disodium edetate, 9 parts of starch xanthate, 33 parts of modified cross-linked rectorite, coke 20 parts of sodium sulfite, 48 parts of fly ash, 5 parts of ethylenediamine tetramethylene phosphonic acid, 16 parts of polyacrylamide, 3 parts of polyoxyethylene glyceryl ether, 7 parts of aminopropyl triethoxysilane, carboxymethyl starch Sodium 15 parts.

[0041] Wherein, the modified cross-linked rectorite is obtained through the following steps: crush the cross-linked rectorite, pass through a 90-mesh sieve, then calcinate at 380°C for 1.5h, cool naturally, and add 15% citric acid aqueous solution of the same weight , ball milling for 3.5h, to obtain a slurry, dropwise add sodium hydroxide aqueous solution to the slurry, adjust the pH to 7.8, and then ultrasonically treat for 45min, the frequency of the ultrasonic treatme...

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PUM

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Abstract

The invention discloses a treating agent for treating electroplating wastewater containing heavy metal ions. The treating agent is prepared from the following raw materials in parts by weight: 15 to 20 parts of ethylenediaminetetraacetic acid disodium salt, 7 to 11 parts of starch xanthate, 30 to 35 parts of modified cross-linked rectorite, 18 to 22 parts of sodium pyrosulfite, 46 to 50 parts of coal ash, 3 to 6 parts of hexamethylenebis(nitrilodimethylene)tetrapho acid, 14 to 18 parts of polyacrylamide, 2 to 5 parts of glycerine ethoxylate, 5 to 8 parts of aminopropyltriethoxysilane and 13 to 17 parts of sodium carboxymethyl starch. The invention further discloses a preparation method of the treating agent for treating the electroplating wastewater containing the heavy metal ions. The prepared treating agent disclosed by the invention can effectively removing the heavy metal ions in the electroplating wastewater by a synergistic effect of all ingredients and has convenience in use and a wide market prospect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment agent for treatment of electroplating wastewater containing heavy metal ions and a preparation method thereof. Background technique [0002] The sources of electroplating wastewater are generally: (1) plating cleaning water; (2) waste electroplating solution; (3) other wastewater, including washing the floor of the workshop, scrubbing plate washing water, condensed water from ventilation equipment, and leakage from plating tanks. Or various tank liquids and drainages of "running, popping, dripping, and leaking" caused by improper operation and management; (4) Equipment cooling water, which has not been polluted except for the temperature rise during use. The water quality and quantity of electroplating wastewater are related to the process conditions of electroplating production, production load, operation management and water use methods and other factors. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F101/20C02F103/16
CPCC02F1/00C02F2101/20C02F2103/16
Inventor 刘军亮
Owner HUNAN VAUBAN ENVIRONMENTAL PROTECTION TECH CO LTD
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