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Method for treating methyl violet dye wastewater

A dye wastewater and treatment method technology, which is applied in textile industry wastewater treatment, water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of unsatisfactory treatment effect of high-concentration printing and dyeing wastewater, slow dye adsorption, low hardness, etc. , to achieve the effect of low cost, improved adsorption treatment, and simple method

Inactive Publication Date: 2018-11-06
TAIYUAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lignite activated coke has a relatively loose structure, low hardness, serious regeneration loss, and its treatment effect on high-concentration printing and dyeing wastewater is not satisfactory; in addition, the cost of adsorption methods such as bentonite and fly ash is relatively low, but the adsorption of dyes slower, smaller capacity,

Method used

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  • Method for treating methyl violet dye wastewater
  • Method for treating methyl violet dye wastewater
  • Method for treating methyl violet dye wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A treatment method for methyl violet dye wastewater, comprising the following steps:

[0029] a) Adsorbent treatment: heat ordinary fresh coke in a water bath at 60°C for 80 minutes, dry at 130°C for 2 hours, and grind to 100 mesh;

[0030] b) Adjust the pH of the methyl violet dye wastewater to 5.5;

[0031] c) Oscillation: add adsorbent to the pH-adjusted methyl violet dye wastewater, add 1g of adsorbent per 50ml methyl violet dye wastewater; shake for 40min, then let stand for 100min; the concentration of the methyl violet dye wastewater It is 4 mg / L.

Embodiment 2

[0033] A treatment method for methyl violet dye wastewater, comprising the following steps:

[0034] a) Adsorbent treatment: heat the coke in a water bath at 80°C for 60 minutes, dry it at 130°C for 2 hours, and then grind it to 120 mesh;

[0035] b) Adjust the pH of the methyl violet dye wastewater to 6.5;

[0036] c) Oscillation: add adsorbent to the pH-adjusted methyl violet dye wastewater, add 1g of adsorbent per 60ml of methyl violet dye wastewater; shake for 30min, then let stand for 90min; the concentration of the methyl violet dye wastewater It is 2 mg / L.

Embodiment 3

[0038] A treatment method for methyl violet dye wastewater, comprising the following steps:

[0039] a) Adsorbent treatment: heat the coke in a water bath at 70°C for 70 minutes, dry it at 130°C for 2 hours, and then grind it to 140 mesh;

[0040] b) Adjust the pH of the methyl violet dye wastewater to 6;

[0041] c) Oscillation: Add 1 g of adsorbent to the methyl violet dye wastewater after pH adjustment, and add 1 g of adsorbent to every 55 ml of methyl violet dye wastewater; after shaking for 30 minutes, let it stand for 90 minutes; the concentration of the methyl violet dye wastewater is 3 mg / L.

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Abstract

The invention discloses a method for treating methyl violet dye wastewater, and relates to the technical field of dye sewage treatment. The method particularly includes heating coke in water bath at the temperature of 60-80 DEG C for 60-80 min, drying the coke and then grinding the coke until the size of the coke reaches 100-140 meshes; adjusting the pH (potential of hydrogen) of the methyl violetdye wastewater until the pH of the methyl violet dye wastewater reaches 5.5-6.5; adding an adsorbent into the methyl violet dye wastewater with the adjusted pH, then oscillating the methyl violet dyewastewater for 30-40 min and then allowing the methyl violet dye wastewater to stand still for 70-100 min. The concentration of the methyl violet dye wastewater is 2-4 mg / L. The method has the advantages that micro-activation treatment is carried out on the coke in mild water bath modes at the normal temperature under the normal pressure, and accordingly the method is simple and feasible and is low in cost; the treated coke is used as the adsorbent, accordingly, methyl violet in water can be effectively removed, the concentration of the methyl violet in wastewater treated by the aid of the method is lower than 1 micro-g / L, and the methyl violet cannot be detected by visible ultraviolet spectrophotometers; the method has an excellent application prospect for treating dye wastewater.

Description

technical field [0001] The invention relates to the technical field of dye wastewater treatment, in particular to a treatment method for methyl violet dye wastewater. Background technique [0002] High organic content, high chroma, high toxicity and complex water quality are the characteristics of printing and dyeing wastewater. If it is discharged directly, it will cause serious pollution to the environment. At present, there are many kinds of organic dye removal methods, such as chemical coagulation method, biochemical method, electrochemical method, oxidation method, biological treatment method, adsorption method and so on. However, these methods have some problems that cannot be ignored, such as low removal efficiency, high cost, and the impact of the material itself on the environment, etc., which are limited in practical application. Among these methods, the adsorption method has the simplest process and the lowest cost consumption, so it is the most widely used and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/34C02F101/30C02F103/30
CPCB01J20/3433B01J20/3483C02F1/283C02F2101/308C02F2103/30C02F2303/16
Inventor 田芳侯安鑫
Owner TAIYUAN NORMAL UNIV
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