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Method and device for treating waste gas generated by printing and dyeing wastewater

A printing and dyeing wastewater and waste gas treatment technology, applied in separation methods, chemical instruments and methods, air quality improvement, etc., to achieve the effects of avoiding the increase of operating costs, ensuring the odor load, and reducing the impact load

Inactive Publication Date: 2014-04-02
HUAFANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the absolute content of sulfur-containing pollutants is not high, they bring strong sensory pollution due to their low smell threshold, at ppm or even ppb level

Method used

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  • Method and device for treating waste gas generated by printing and dyeing wastewater

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Experimental program
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Effect test

Embodiment 1

[0051] Fan 9 The humidifier is connected in sequence through the pipeline 10, biological drip filter bed 12, biological filter bed 15;

[0052] The top of the biological dripping bed 12 is the purification gas emissions port I11, the lower part of the biological dripping bed 12 has the waste liquid discharge port I16, the biological drip filter bed 12 has the filler layer Ⅰ13 inside the biological dripping bed;The type of pipeline is connected below and above the filler layer;

[0053] The top 15 of the biological filter bed is Ⅱ14, the lower part of the biological filter bed 15 has the waste liquid emission port II, and the internal filler layer II18 is in the biological filter bed 15;

[0054] The purification gas emission port of the biological filter bed 15 is connected to the absorbent 19 in adjacent places with the deepening treatment of the absorption tower. The upper part of the absorption tower 1 is sprayed.

[0055] The above -mentioned filler layer 2 is located at a hei...

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Abstract

The invention belongs to the technical field of waste gas treatment and particularly relates to a method for treating waste gas generated by printing and dyeing wastewater. The method comprises the following steps of: firstly, treating the waste gas; and then carrying out primary biological treatment and secondary biological treatment on the waste gas. When the method disclosed by the invention is adopted to treat the waste gas generated by the wastewater in the printing and dyeing process, by removing dust in odor and preventing the dust from entering a subsequent biotrickling filter to cause increase of a pressure drop, increase of operating cost and even failure of operation are avoided. The method has another advantage that the method is low in investment, is low in operating cost, has low power consumption, does not consume chemical agents, does not generate secondary pollutants, is convenient to manage and operate, has good impact resistance, is rapidly recovered after shutdown, can reach a full load only in 2 to 3 days, is the most natural and green environmental-friendly process and is suitable for places in which the gas volume is large, concentration is low and pollutant ingredients can be biodegraded.

Description

Technical field [0001] The invention is the field of exhaust gas treatment technology. It specifically involves a method of exhaust gas treatment generated by a printing and dyeing wastewater, and also involves the device for this method. Background technique [0002] With the continuous improvement of my country's economic level, odor treatment has become an important environmental investment project in my country's environmental protection field.Due to the volatility of vulnerability gases, prone to diffusion, and large irritating odor, it may adversely affect human respiratory system, digestive system, endocrine system, nervous system, and spirit. Therefore, the odor has huge social value. [0003] The odor is usually due to the odor produced during the process of heating, decomposition, and synthesis of sulfur -containing compounds.The main harm of low concentration of odor to people is psychological pressure, because these unpleasant odors can cause anorexia, breathing, nau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/78B01D53/84
CPCY02A50/20
Inventor 王力民罗维新贾洪斌李春光张炳营王希刚赵成伟张志勇孙天天
Owner HUAFANG
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