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Dye wastewater treatment technology

A technology of dye wastewater and treatment process, which is applied in textile industry wastewater treatment, water/sewage treatment, neutralized water/sewage treatment, etc. It can solve problems such as poor treatment effect, secondary pollution, and difficult treatment, and achieve cost reduction. Low cost, high output, simple and easy operation

Inactive Publication Date: 2016-10-12
CHONGQING JIAOTONG UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In order to solve the problems that the existing industrial methods of treating dye wastewater are difficult to deal with, the treatment effect is not good and there is a risk of secondary pollution, the present invention proposes a dye wastewater treatment process

Method used

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  • Dye wastewater treatment technology

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Effect test

Embodiment 1

[0032] A dye wastewater treatment process is as follows: in the wastewater storage tank to be treated, the initial concentration of the wastewater to be treated is adjusted to 489 mg / L, and the pH value is adjusted to 5.0; Add 5.0 g / L of Fe-Ni-Mn / Al to the wastewater 2 o 3 Heterogeneous catalyst and 5 mL / L of H 2 o 2 , turn on the ultrasonic generator and transducer, wherein the output power and frequency of the ultrasonic generator are 200W and 20 kHz respectively; and the dye wastewater is filled with Ar + air saturated gas through the aeration head, and the two are in volume ratio 1:1 mix. Through intensified low-frequency ultrasonic degradation for 3 h; the treated wastewater was put into the treated wastewater storage tank. After testing, the chroma removal rate of the treated wastewater is 95.5%.

Embodiment 2

[0034] A dye wastewater treatment process is as follows: in the wastewater storage tank to be treated, the initial concentration of the wastewater to be treated is adjusted to 495 mg / L, and the pH value is adjusted to 3.0; Add 8.0 g / L of Fe-Ni-Mn / Al to the wastewater 2 o 3 Heterogeneous catalyst and 5mL / L of H 2 o 2, turn on the ultrasonic generator and transducer, wherein the output power and frequency of the ultrasonic generator are 300W and 40 kHz respectively; and fill the dye wastewater with Ar and air saturated gas through the aeration head, and the two are proportional to the volume ratio 1:1 mix. Through intensified low-frequency ultrasonic degradation for 2 h; the treated wastewater was put into the treated wastewater storage tank. After testing, the chroma removal rate of the treated wastewater was 98.2%.

Embodiment 3

[0036] A dye wastewater treatment process is as follows: in the wastewater storage tank to be treated, the wastewater initial concentration of the wastewater to be treated is adjusted to 481mg / L, and the pH value is adjusted to 4.3; then the wastewater is put into the wastewater treatment working pool, and the wastewater were added to

[0037] 6.0 g / L Fe-Ni-Mn / Al 2 o 3 Heterogeneous catalyst and 5mL / L of H 2 o 2 , turn on the ultrasonic generator and transducer, wherein the output power and frequency of the ultrasonic generator are 250W and 30 kHz respectively; and the dye wastewater is filled with Ar + air saturated gas through the aeration head, and the two are in volume ratio 1:1 mix. Through intensified low-frequency ultrasonic degradation for 2 h; the treated wastewater was put into the treated wastewater storage tank. After testing, the chroma removal rate of the treated wastewater is 97%.

[0038] A dye wastewater treatment process of the present invention uses l...

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Abstract

In order to solve the problems that the existing industrial methods for treating dye wastewater are difficult to deal with, the treatment effect is not good and there is a risk of secondary pollution, the present invention proposes a dye wastewater treatment process. A dye wastewater treatment process of the present invention adopts Fe-Ni-Mn / Al 2 o 3 Heterogeneous catalyst, the catalyst is added to the dye wastewater, and low-frequency ultrasonic waves are applied to degrade the dye wastewater synergistically, and a saturated gas with an argon-to-air ratio of 1:1 is blown in during the degradation process. The technical effect of the dye wastewater treatment process of the present invention is: the degradation effect on dye wastewater is good, which is better than the sum of the degradation effects of single ultrasonic degradation and direct treatment of dye wastewater by catalysts, and its operation is simple and easy, and the cost is low, which solves the problem of dye wastewater Large output, difficult to degrade and other problems.

Description

technical field [0001] The invention relates to a high-concentration, refractory organic wastewater treatment process, in particular to a dye wastewater treatment process. Background technique [0002] Dye wastewater mainly comes from the production enterprises of dyes and dye intermediates, and is composed of dyes, pastes, and auxiliaries discharged during the dyeing and finishing process. With the rapid development of the printing and dyeing industry, dye wastewater has become one of the most important sources of pollution in water bodies. [0003] Dye is the main pollutant in dye wastewater, with various chromogenic groups (such as -N = N-, -N = O, etc.) and some polar groups ( -SO 3 Na, -OH, -NH 2 ), complex composition, deep color, poor biodegradability, and often contain a variety of organic substances with biological toxicity or "three effects", which are refractory organic pollutants. Its characteristics: [0004] (1) Most of the organic matter in wastewater is ...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F103/30
CPCC02F9/00C02F1/36C02F1/66C02F1/722C02F1/725C02F2103/30
Inventor 张占梅李锐付婷瞿瑞
Owner CHONGQING JIAOTONG UNIVERSITY
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