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Method for treating printing and dyeing wastewater by composite biological enzyme

A technology of composite biological enzymes and printing and dyeing wastewater, which is applied in textile industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., to achieve high economic benefits, reduce sludge discharge, and enhance anti-toxin ability and the effect of impact resistance

Inactive Publication Date: 2013-07-03
SHAOXING HEQIAO JIANGBIN WATER TREATMENT
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  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, a large amount of organic substances that are difficult to biodegrade, such as PVA pulp, rayon alkali hydrolyzate (mainly phthalic acid substances), and new additives, have entered printing and dyeing wastewater, and traditional biological treatment processes have been severely challenged.

Method used

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  • Method for treating printing and dyeing wastewater by composite biological enzyme
  • Method for treating printing and dyeing wastewater by composite biological enzyme
  • Method for treating printing and dyeing wastewater by composite biological enzyme

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Embodiment Construction

[0021] Please refer to the attached figure 1 Shown, the present invention is a kind of printing and dyeing wastewater treatment method utilizing compound biological enzyme, and it comprises following processing steps:

[0022] 1), pump the printing and dyeing wastewater into the regulating tank, and stay in the regulating tank for 10.5 hours;

[0023] 2), send the sewage into the primary sedimentation tank, and add FeSO 4 and liquid caustic soda, and stay in the primary sedimentation tank for 7.25 hours;

[0024] 3), send the sewage into the anaerobic tank, add anaerobic enzyme and coenzyme, and stay in the anaerobic tank for 14.9 hours; wherein, the anaerobic enzyme is a hydrolytic enzyme, and the coenzyme is a nutrient substance; the temperature of adding the enzyme is 20-40°C;

[0025] 4), send the sewage into the intermediate sedimentation tank, and stay in the intermediate sedimentation tank for 16.56 hours;

[0026] 5), send the sewage into the aeration tank, add aer...

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Abstract

The invention relates to a method for treating printing and dyeing wastewater by a composite biological enzyme. The method comprises the following technological steps: 1), pumping the printing and dyeing wastewater into a regulating tank and keeping the printing and dyeing wastewater in the regulating tank for 10.5 hours; 2), conveying the wastewater into a primary settling tank, adding FeSO4 and liquid caustic soda, and keeping the wastewater in the primary settling tank for 7.25 hours; 3), conveying the wastewater into an anaerobic tank, adding an anaerase and a coenzyme, and keeping the wastewater in the anaerobic tank for 14.9 hours; 4), conveying the wastewater into a medium settling tank and keeping the wastewater in the medium settling tank for 16.56 hours; 5), conveying the wastewater into an aeration tank, adding an aerobiotic enzyme and a coenzyme, introducing air to aerate, and keeping the wastewater in the aeration tank for 37.4 hours; and 6), conveying the wastewater into a final settling tank, and discharging the effluent after mud and water are separated in the final settling tank. The method for treating the printing and dyeing wastewater by the composite biological enzyme has the advantages of good treatment effect, low cost, and reduction of secondary pollution, etc.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a printing and dyeing wastewater treatment method using a composite biological enzyme, and belongs to the technical field of sewage treatment technology. Background technique [0002] Printing and dyeing enterprises are large dischargers of industrial wastewater, which has the characteristics of large water volume, high content of organic pollutants, deep color, high alkalinity, and large changes in water quality. It is difficult to treat industrial wastewater. At present, the commonly used domestic printing and dyeing wastewater treatment processes are mainly divided into two categories: one is physical and chemical methods, that is, adding flocculants for precipitation or air flotation to remove pollutants in wastewater. Due to the high cost of dosing, incomplete removal of pollutants, large amount of sludge and difficulty in further treatment, a certain amount of secondary poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/30
Inventor 丁静张志峰
Owner SHAOXING HEQIAO JIANGBIN WATER TREATMENT
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