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Treatment method for dyeing and printing effluent

A printing and dyeing sewage and treatment method technology, applied in the field of sewage treatment and printing and dyeing sewage treatment, can solve the problems of increased difficulty in treatment and reduced biodegradability of organic pollutants, so as to improve biodegradability, save energy and run The effect of low cost and low sludge production

Inactive Publication Date: 2015-12-23
朱忠良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the use of a large number of new additives and slurries, the biodegradability of organic pollutants has decreased, and the treatment has become more difficult

Method used

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  • Treatment method for dyeing and printing effluent
  • Treatment method for dyeing and printing effluent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Primary sedimentation step: the printing and dyeing sewage flows to the primary sedimentation tank and stays for 3.5h to remove impurities, sinkables and floating objects; the primary sedimentation tank contains 20 parts by weight of industrial waste sulfuric acid, 10 parts by weight of calcium hydroxide, 33 parts by weight of biochemical waste, 19 parts by weight of ferrous sulfate, 2 parts by weight of diatomite, 5 parts by weight of bentonite, 14 parts by weight of ceramsite, 15 parts by weight of quartz sand, 12 parts by weight of volcanic rock, 7 parts by weight of calcined kaolin and 6 parts by weight Parts by weight activated carbon;

[0058] (2) Filtration: pump the supernatant obtained in step (1) to filter to remove suspended particles in the water;

[0059] (3) Hydrolysis and acidification treatment: pump the sewage filtered in step (2) into the hydrolysis and acidification tank to stay for 5 hours, and carry out hydrolysis and acidification treatment;

...

Embodiment 2

[0067] (1) Primary sedimentation step: the printing and dyeing sewage flows to the primary sedimentation tank and stays for 1 hour to remove impurities, sinkables and floating objects; the primary sedimentation tank contains 30 parts by weight of industrial waste sulfuric acid, 15 parts by weight of calcium hydroxide, 28 Parts by weight of biochemical waste, 7 parts by weight of ferrous sulfate, 9 parts by weight of diatomite, 23 parts by weight of bentonite, 24 parts by weight of ceramsite, 42 parts by weight of quartz sand, 5 parts by weight of volcanic rock and 11 parts by weight of activated carbon;

[0068] (2) Filtration: pump the supernatant obtained in step (1) to filter to remove suspended particles in the water;

[0069] (3) Hydrolysis and acidification treatment: pump the sewage filtered in step (2) into the hydrolysis and acidification tank to stay for 10 hours, and carry out hydrolysis and acidification treatment;

[0070] (4) Anaerobic treatment: discharge the se...

Embodiment 3

[0077] (1) Primary sedimentation step: the printing and dyeing sewage flows to the primary sedimentation tank and stays for 2 hours to remove impurities, sinkables and floating objects; the primary sedimentation tank contains 25 parts by weight of industrial waste sulfuric acid, 12.5 parts by weight of calcium hydroxide, 30.5 parts by weight Parts by weight of biochemical waste, 13 parts by weight of ferrous sulfate, 5.5 parts by weight of diatomite, 14 parts by weight of bentonite, 19 parts by weight of ceramsite, 28.5 parts by weight of quartz sand, 8.5 parts by weight of volcanic rock, 3.5 parts by weight of calcined kaolin and 8.5 parts by weight activated carbon;

[0078] (2) Filtration: pump the supernatant obtained in step (1) to filter to remove suspended particles in the water;

[0079] (3) Hydrolysis and acidification treatment: pump the sewage filtered in step (2) into the hydrolysis and acidification tank to stay for 7.5 hours, and carry out hydrolysis and acidific...

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Abstract

The invention discloses a treatment method for dyeing and printing effluent. The method comprises the steps of primary settlement, filtration, hydrolytic acidification treatment, anaerobic treatment, oxidation treatment, coagulation decolorization treatment, photocatalytic treatment, activated carbon adsorption and ultrafiltration treatment. According to the treatment method for the dyeing and printing effluent, through effective combination of multiple technologies, the dyeing and printing effluent can be effectively treated, the effluent COD is smaller than or equal to 20 mg / L, the effluent BOD is smaller than or equal to 5 mg / L, the effluent SS is smaller than or equal to 5 mg / L, the sludge output is low, the effect is stable, the water quality meets 'The reuse of urban recycling water-Water quality standard for urban miscellaneous water consumption'(GB / T 18920-2002), and treated water can be applied to community and garden greening, road watering and the like.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment method, in particular to a printing and dyeing sewage treatment method. Background technique [0002] Printing and dyeing sewage is the main discharge of the textile printing and dyeing industry. According to incomplete statistics, the national annual printing and dyeing sewage is about 3.6×10 9 t, accounting for about one-third of the entire industrial wastewater. Strengthening the treatment of printing and dyeing sewage plays an important role in protecting the environment and maintaining ecological balance. Printing and dyeing wastewater has the characteristics of large chroma, high organic matter content, large changes in water temperature, water volume, water quality and pH value. In recent years, with the use of a large number of new additives and slurries, the biodegradability of organic pollutants has decreased, and the treatment has become more diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 朱忠良
Owner 朱忠良
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