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Printing and dyeing wastewater treatment process

A technology for treating process and printing and dyeing wastewater, which is applied in textile industry wastewater treatment, water/sewage treatment, biological water/sewage treatment, etc. It can solve problems such as high requirements for operators, increased investment in senior talents, and low recycling rate. Achieve good filtration effect, speed up water flow, and good effect

Inactive Publication Date: 2016-09-28
CHANGXING XINTIANLONG PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many treatment processes for printing and dyeing wastewater. The most representative one is the traditional method of direct chemical treatment. This method has a low recycling rate, and the discharged treated wastewater still contains a large amount of harmful substances, and the cost is high and the efficiency is low; The second is to use the plasma exchange method. This method has high requirements for operators. As far as the current textile industry is concerned, it is necessary to increase the investment in high-level talents in this regard. After the wastewater is treated, it is still in a state of eutrophication.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A printing and dyeing wastewater treatment process, including five steps of bleaching treatment, physical and chemical treatment, filtration treatment, microbial treatment and physical and chemical sludge treatment:

[0021] Step 1: the bleaching treatment is to use a bleaching agent to bleach and decolorize the wastewater;

[0022] Step 2: In the physical and chemical treatment, the wastewater flows into the homogeneous adjustment tank, adding aluminum sulfate solution, and adjusting the pH of the wastewater to 8.0-8.5, so that the pollutants in the water are solidified into large particles and precipitated;

[0023] Step 3: In the filtration treatment, the physical and chemically treated water is lifted by the pump to pass through the biomass filter layer, the sand filter layer and the activated carbon filter layer in turn to remove the residual pollutants in the water;

[0024] Step 4: In the microbial treatment, the filtered water is sent to the microbial treatment ...

Embodiment 2

[0031] A printing and dyeing wastewater treatment process, including five steps of bleaching treatment, physical and chemical treatment, filtration treatment, microbial treatment and physical and chemical sludge treatment:

[0032] Step 1: the bleaching treatment is to use a bleaching agent to bleach and decolorize the wastewater;

[0033] Step 2: In the physical and chemical treatment, the wastewater flows into the homogeneous adjustment tank, adding aluminum sulfate solution, and adjusting the pH of the wastewater to 8.0-8.5, so that the pollutants in the water are solidified into large particles and precipitated;

[0034] Step 3: In the filtration treatment, the physical and chemically treated water is lifted by the pump to pass through the biomass filter layer, the sand filter layer and the activated carbon filter layer in turn to remove the residual pollutants in the water;

[0035] Step 4: In the microbial treatment, the filtered water is sent to the microbial treatment ...

Embodiment 3

[0042] A printing and dyeing wastewater treatment process, including five steps of bleaching treatment, physical and chemical treatment, filtration treatment, microbial treatment and physical and chemical sludge treatment:

[0043] Step 1: the bleaching treatment is to use a bleaching agent to bleach and decolorize the wastewater;

[0044] Step 2: In the physical and chemical treatment, the wastewater flows into the homogeneous adjustment tank, adding aluminum sulfate solution, and adjusting the pH of the wastewater to 8.0-8.5, so that the pollutants in the water are solidified into large particles and precipitated;

[0045] Step 3: In the filtration treatment, the physical and chemically treated water is lifted by the pump to pass through the biomass filter layer, the sand filter layer and the activated carbon filter layer in turn to remove the residual pollutants in the water;

[0046] Step 4: In the microbial treatment, the filtered water is sent to the microbial treatment ...

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Abstract

The invention provides a printing and dyeing wastewater treatment process. According to the process, a biomass filtering layer, a dinas filtering layer and an activated carbon filtering layer are adopted for filtering the water, and therefore a better effect is achieved. The developed root system of vetiver grass is utilized for treating the waste water, and the effect is good. Activated carbon can effectively absorb matter in the water to improve the quality of the filtered water, and therefore a better effect is achieved.

Description

technical field [0001] The invention relates to the field of textile wastewater treatment, in particular to a printing and dyeing wastewater treatment process. Background technique [0002] The textile industry is one of the pillars of the current economic development, but in the printing and dyeing of textile fabrics, a lot of sewage will be produced, causing very serious environmental pollution. Even if the treated sewage is discharged, it will still cause eutrophication of the water in the river. As a result, plants such as water hyacinth and blue-green algae grow wildly, affecting the entire ecosystem, and many manufacturers choose not to treat sewage and discharge it quietly for petty profits. Therefore, it is very necessary to set up a waste water treatment process with low cost and effective utilization of waste water. [0003] There are many treatment processes for printing and dyeing wastewater. The most representative one is the traditional method of direct chemic...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/30
CPCC02F1/001C02F1/283C02F1/286C02F1/5245C02F1/66C02F3/34C02F9/00C02F11/121C02F2103/30
Inventor 严建民沈泽平
Owner CHANGXING XINTIANLONG PRINTING & DYEING CO LTD
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