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Treating method suitable for high-acidity metallurgical-industry wastewater

A technology of metallurgical industry and treatment method, applied in the field of high acidity metallurgical industry wastewater treatment, can solve the problems of application cost, insufficient treatment efficiency, metallurgical acid wastewater pollution, etc., and achieves the effects of strong practicability, cheap raw materials and good application prospects

Inactive Publication Date: 2016-12-07
吴小慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, although the above treatment methods have solved the pollution problem of metallurgical acid wastewater to a certain extent, there are still many shortcomings in terms of application cost and treatment efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Discharge the industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of the cinder is 1.5mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0031] (2) Collect the supernatant after the precipitation treatment, and add a composite treatment agent according to the dosage of 20mg / L wastewater. The composite treatment agent is composed of the following components: 20 parts of polymerized ferric chloride, 20 parts of corn starch , 18 parts of coconut shell charcoal, 15 parts of perlite, 10 parts of potassium periodate, 8 parts of cinnamaldehyde, 6 parts of alum, 5 parts of iron citrate, 5 parts of polyurethane, 4 parts of plant fiber, hydrogen peroxide 4 parts, 3 parts of benzoin diethyl ether, 3 parts of sodium carboxymethylcellulose, 1 part of baicalin orthophosphate, 10 parts of polyacrylamide, and the...

Embodiment 2

[0038] (1) Discharge industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of the cinder is 2 mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0039] (2) Collect the supernatant after the precipitation treatment, and add a composite treatment agent according to the dosage of 25 mg / L of wastewater. The composite treatment agent is composed of the following components: 25 parts of polymerized ferric chloride, 23 parts of corn starch 22 parts of coconut shell charcoal, 20 parts of perlite, 11 parts of potassium periodate, 9 parts of cinnamaldehyde, 7 parts of alum, 6 parts of iron citrate, 6 parts of polyurethane, 5 parts of plant fiber, peroxide 5 parts of hydrogen, 4 parts of benzoin diethyl ether, 4 parts of sodium carboxymethylcellulose, 2 parts of baicalin orthophosphate, 15 parts of sodium silicate, and t...

Embodiment 3

[0046] (1) Discharge industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of cinder is 2.5mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0047] (2) Collect the supernatant after the precipitation treatment, and add a composite treatment agent according to the dosage of 30mg / L wastewater. The composite treatment agent is composed of the following components: 30 parts of polymerized ferric chloride, 26 parts of corn starch , 26 parts of coconut shell charcoal, 25 parts of perlite, 12 parts of potassium periodate, 10 parts of cinnamaldehyde, 8 parts of alum, 7 parts of iron citrate, 7 parts of polyurethane, 6 parts of plant fiber, hydrogen peroxide 6 parts, 5 parts of benzoin diethyl ether, 5 parts of sodium carboxymethylcellulose, 3 parts of baicalin orthophosphate, 20 parts of diatomaceous earth, and the r...

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Abstract

The invention discloses a treating method suitable for high-acidity metallurgical-industry wastewater. A composite treatment agent is prepared from polyferric chloride, corn starch, coconut shell charcoal, perlite, potassium periodate, cinnamyl aldehyde, alum, ferric citrate, polyurethane, plant fibers, hydrogen peroxide, benzoin diethyl ether, sodium carboxymethylcellulose, baicalein phosphate and a coagulant aid, the corresponding water treatment technologies including adsorption, treating-agent treatment, anaerobic treatment, photo-catalytic oxidation, sodium hypochlorite oxidation, aeration, electric flocculation, electroflotation and the like are used in cooperation, and the acidity of the treated wastewater is greatly reduced; meanwhile, heavy metal such as lead, arsenic and chromium is effectively removed, the environment-protection requirement of standards can be met, and good application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of harmless treatment of industrial wastewater, in particular to a treatment method suitable for high-acidity metallurgical industrial wastewater. Background technique [0002] During the hydrometallurgical process, a large amount of acidic metallurgical wastewater such as pit water, acid leaching solution, extraction residue, and electrowinning barren solution will be produced. These wastewaters are often strongly acidic and contain high concentrations of iron ions and sulfate ions. Due to the strong corrosiveness of acidic wastewater, direct discharge will corrode pipes, channels and structures, interfere with self-purification of water bodies, and cause soil acidification or salinization. At the same time, heavy metals in wastewater will seriously affect the health and even life safety of children and adults. All of these heavy metals can cause headaches, dizziness, insomnia, forgetfulness, joint pain, s...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/16C02F101/20C02F101/22C02F101/10
CPCC02F9/00C02F1/283C02F1/32C02F1/463C02F1/465C02F1/50C02F1/5236C02F1/56C02F1/725C02F1/76C02F3/28C02F2001/007C02F2101/103C02F2101/20C02F2101/22C02F2103/16C02F2305/10
Inventor 吴小慧
Owner 吴小慧
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