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Treatment method of malachite green dye wastewater

A technology of dye wastewater and malachite green, which is applied in waste coating treatment, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve problems such as short treatment time, achieve low cost, low energy consumption, and solve secondary pollution Effect

Inactive Publication Date: 2013-04-24
CHENGDU KUAIDIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to: aim at the above existing problems, to provide a treatment method for malachite green dye wastewater, the present invention utilizes the adsorption characteristics of steel slag to malachite green, and the performance of coke absorbing microwaves to generate high temperature to process malachite Green dye wastewater has the characteristics of simple method, low production cost, high efficiency, and short processing time. At the same time, the used steel slag can be reused repeatedly through microwave treatment, avoiding the problem of secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 100ml of malachite green solution with a concentration of 600mg / L, and add a mixed adsorbent with a mass percentage of 0.8% of wastewater to it. The mixed adsorbent is composed of steel slag and coke in a mass ratio of 1:1, and the particle size of the steel slag is 50 mesh. Shake for 30 hours after adding, and then separate the steel slag in the waste water. It has been determined that the decolorization rate of wastewater is 91%.

[0027] Finally, the separated steel slag is heated by microwave, the heating temperature is 800° C., and the heating time is 5 minutes. The obtained steel slag can be used for recycling again.

Embodiment 2

[0029] Take 100ml of malachite green solution with a concentration of 600mg / L, and add a mixed adsorbent with a mass percentage of wastewater of 2% to it. The mixed adsorbent is composed of steel slag and coke in a mass ratio of 1:0.8, and the particle size of the steel slag is 80 mesh. Shake for 0.5h after adding, and then separate the steel slag in the waste water. It has been determined that the decolorization rate of wastewater is 87%.

[0030] Finally, the separated steel slag is heated by microwave, the heating temperature is 600° C., and the heating time is 30 minutes. The obtained steel slag can be used for recycling again.

Embodiment 3

[0032] Take 100ml of malachite green solution with a concentration of 600mg / L, and add a mixed adsorbent with a mass percentage of wastewater of 1.2% to it. The mixed adsorbent is composed of steel slag and coke in a mass ratio of 1:1.5, and the particle size of the steel slag is 60 mesh. Shake for 3 hours after adding, and then separate the steel slag in the waste water. It has been determined that the decolorization rate of wastewater is 97%.

[0033] Finally, the separated steel slag is heated by microwave, the heating temperature is 650° C., and the heating time is 10 minutes. The obtained steel slag can be used for recycling again.

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Abstract

The invention discloses a treatment method of malachite green dye wastewater, and aims to solve the problems in an existing treatment method of malachite green dye wastewater, such as high cost, long period, poor operation stability and likelihood of causing secondary pollution. The method comprises the following steps: (1) preparation of a mixed adsorbent: mixing steel slag and coke in a mass ratio of 1:0.8-1.5; (2) oscillation: adding an adsorbent 0.8-2 wt% of the wastewater into the malachite green dye wastewater, and oscillating for 0.5-30 h; and (3) solid-liquid separation: separating steel slag in the wastewater to obtain treated water. The invention has the characteristics of simple method, low production cost, high efficiency and short treatment time; while, the used steel slag can be treated by microwave for reuse, so as to avoid secondary pollution.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment method for malachite green dye wastewater. Background technique [0002] Malachite green, also known as alkaline green or malachite green, is a green crystal with metallic luster. As an industrial dye, malachite green is used in pottery, textile, leather and cytochemical dyeing; because of its antibacterial and insecticidal effects, it is also often used as a fungicide. Malachite green is a toxic triphenylmethane chemical. After the condensation of benzaldehyde and N,N-dimethylaniline in hydrochloric acid or sulfuric acid to form a recessive base of tetramethyl-substituted diaminotriphenylmethane, It is made by oxidation of lead dioxide in acid medium. It has high toxicity, high residue, carcinogenic, teratogenic, and mutagenic effects, and seriously threatens human health. Therefore, water and wastewater containing malachite green must be effectively treated. [00...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/30B09B3/00C02F101/32
CPCB01J2220/42B01J2220/4875C02F1/281C02F1/283C02F1/34C02F2101/308C02F2103/14
Inventor 张荣斌
Owner CHENGDU KUAIDIAN TECH
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