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Treatment process of dyeing wastewater

A technology for printing and dyeing sewage and treatment process, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of low water reuse rate and improve the wastewater reuse rate. , Relieve the pressure of water resources, the effect of good water quality

Inactive Publication Date: 2014-04-16
江苏双圆袋鼠服饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The water reuse rate in the existing printing and dyeing sewage treatment process is low, generally around 30%, and it is mainly reused in the previous process with low requirements, which has also become the main obstacle restricting the reuse of reclaimed water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A treatment process for printing and dyeing sewage, comprising the steps of:

[0018] 1) Dissolve 8 parts by mass of ruthenium trichloride hydrate and 90 parts by mass of copper nitrate trihydrate in water to make an impregnation solution, and control the total mass concentration of ruthenium trichloride and copper nitrate in the impregnation solution to 445g / L;

[0019] 2) Use equal volume impregnation method to pour the aluminum oxide into the impregnation solution and impregnate completely;

[0020] 3) The impregnation is dried at 110°C for 5 hours;

[0021] 4) Calcining the dried carrier loaded with active component precursors of ruthenium trichloride and copper nitrate at 475°C for 8 hours to obtain a two-component composite metal catalyst;

[0022] 5) The printing and dyeing sewage is first flocculated and precipitated with conventional flocculants, and then subjected to A / O biochemical treatment;

[0023] 6) Add coagulant to the sewage for advanced pretreatment...

Embodiment 2

[0027] A treatment process for printing and dyeing sewage, comprising the steps of:

[0028] 1) Dissolve 10 parts by mass of ruthenium trichloride hydrate and 92 parts by mass of copper nitrate trihydrate in water to make an impregnation solution, and control the total mass concentration of ruthenium trichloride and copper nitrate in the impregnation solution to 50 g / L;

[0029] 2) Use equal volume impregnation method to pour the aluminum oxide into the impregnation solution and impregnate completely;

[0030] 3) The impregnation is dried at 120°C for 6 hours;

[0031] 4) Calcining the dried carrier loaded with the active component precursors of ruthenium trichloride and copper nitrate at 480°C for 9 hours to obtain a two-component composite metal catalyst;

[0032] 5) The printing and dyeing sewage is first flocculated and precipitated with conventional flocculants, and then subjected to A / O biochemical treatment;

[0033] 6) Add coagulant to the sewage for advanced pretrea...

Embodiment 3

[0037] A treatment process for printing and dyeing sewage, comprising the steps of:

[0038] 1) Dissolve 9 parts by mass of ruthenium trichloride hydrate and 91 parts by mass of copper nitrate trihydrate in water to make an impregnation solution, and control the total mass concentration of ruthenium trichloride and copper nitrate in the impregnation solution to 446g / L;

[0039] 2) Use equal volume impregnation method to pour the aluminum oxide into the impregnation solution and impregnate completely;

[0040] 3) The impregnation was dried at 117°C for 5.5 hours;

[0041] 4) Calcining the dried carrier loaded with active component precursors of ruthenium trichloride and copper nitrate at 478°C for 8.5 hours to obtain a two-component composite metal catalyst;

[0042] 5) The printing and dyeing sewage is first flocculated and precipitated with conventional flocculants, and then subjected to A / O biochemical treatment;

[0043] 6) Add coagulant to the sewage for advanced pretrea...

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PUM

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Abstract

The invention discloses a treatment process of dyeing wastewater. The treatment process comprises the following steps: 1) dissolving rutheniumchloride hydrate and trihydrate copper nitrate into water to form an impregnation liquid; 2) pouring aluminium oxide into the impregnation liquid to be impregnated completely according to an equivoluminal impregnation method; 3) drying the impregnation material at the temperature of 110 to 120 DEG C for 5 to 6 hours; 4) calcining dried carrier loaded with precursors of active components of ruthenium trichloride and copper nitrate at the temperature of 475 to 480 DEG C for 8 to 9 hours so as to obtain a bi-component compound metal catalyst; 5) firstly, performing flocculent precipitation on the dyeing wastewater through a conventional flocculating agent, and then carrying out an A / O biochemical treatment; 6) adding a coagulant into the wastewater, and carrying out deep pretreatment; 7) adding the bi-component compound metal catalyst into the wastewater through the deep pretreatment, inletting ozone, and carrying out reaction to obtain reusable wastewater after full reaction; 8) reusing tail gas obtained after the reaction on the O-section of the A / O biochemical treatment to supply oxygen. Through the adoption of the treatment process, the reuse rate of the wastewater can be increased by more than 70%.

Description

technical field [0001] The invention relates to a treatment process for printing and dyeing sewage. Background technique [0002] The water reuse rate in the existing printing and dyeing sewage treatment process is low, generally around 30%, and it is mainly reused in the previous process that is not too demanding, which has also become the main obstacle restricting the reuse of reclaimed water. Contents of the invention [0003] The purpose of the present invention is to provide a treatment process for printing and dyeing sewage, which can increase the reuse rate of sewage to more than 70%, which greatly relieves the pressure on water resources of industrial enterprises; used in the process. [0004] In order to achieve the above object, the technical solution of the present invention is to design a treatment process for printing and dyeing sewage, comprising the steps of: [0005] 1) Dissolve 8-10 parts by mass of ruthenium trichloride hydrate and 90-92 parts by mass o...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 王正球
Owner 江苏双圆袋鼠服饰有限公司
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