Method for treating wastewater from ADC vesicant, and integrated plant

An ADC foaming agent and wastewater treatment technology, applied in natural water treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Pollution and other problems, to achieve the effect of improving the hydraulic state, short process flow, and good water quality

Inactive Publication Date: 2008-08-13
JIANGSU UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0004] Existing processing method mainly contains physicochemical method, wherein Yao Cheng, Dai Qun, Zhou Xisheng's (Journal of Pollution Prevention and Control Technology Volume 11 No. 3 Issue 1998.9) in the prior art, its The chemical method is adopted, and the materials used are lime and bleaching powder. Although this method has a certain effect, the removal rate of ammonia nitrogen is only 35.4%, and the removal rate of chemical oxygen demand is only 78.1%.
In addition, there is a large amount of secondary pollution such as lime slag
Another invention patent: (Patent No.: CN2005100382685), the principle of this method is to add alkali to strip, although it has a certain effect, but the disadvantage is that the amount of alkali consumed is too much , too much energy consumption.

Method used

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  • Method for treating wastewater from ADC vesicant, and integrated plant
  • Method for treating wastewater from ADC vesicant, and integrated plant
  • Method for treating wastewater from ADC vesicant, and integrated plant

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Embodiment Construction

[0025] The integrated device used in the present invention is composed of three parts: 1. The first part mainly includes an ultrasonic generator, an ultrasonic transducer and a water tank, wherein the ultrasonic generator is a key component for determining the wastewater treatment effect. The ultrasonic generator converts the usual power frequency into a high-frequency electrical signal above 20KHZ (generally 20KHZ to 10MHZ) and sends it to the ultrasonic transducer, thereby generating powerful ultrasonic vibrations and spreading them into the waste water, generating a series of Physical and chemical effects, which promote the degradation of chemical pollutants in wastewater. At the same time, in order to enhance the effect, an aeration device is attached to this part. The fan used is placed at the bottom, and the gas pipe and gas nozzle are arranged at the lower part. 2. The latter part is biochemical treatment equipment, which is mainly composed of three parts in series: the...

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Abstract

This invention relates to a method for treating wastewater by using ADC foaming agent. The method comprises: (1) pretreating by ultrasonication; (2) treating by biochemical method (A / DAT-IAT technique). The method has such advantages as reasonable equipment structure, simple process, stable operation, high efficiency and high water quality.

Description

technical field [0001] The invention relates to wastewater treatment technology in environmental science and engineering, in particular to an ADC foaming agent wastewater treatment method and an integrated device. Background technique [0002] The chemical name of ADC blowing agent is azodicarbonamide (English name is Azodicarbonamide), Molecular formula is C 2 h 4 o 2 N 2 , The appearance is light yellow crystalline powder, the decomposition temperature is 195-220 ℃, and a large amount of nitrogen gas, an appropriate amount of carbon monoxide, a small amount of carbon dioxide, ammonia and other gases are released during decomposition. ADC is non-toxic, odorless, non-flammable, and has the characteristics of large gas generation, uniform bubbles, no pollution to products, non-toxic gas, no corrosion to molds, easy temperature control, and no influence on curing or molding speed. At present, the product is widely used as a foaming agent in the processing of polyvinyl chl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/36C02F3/30C02F101/16C02F103/38
Inventor 缪应祺
Owner JIANGSU UNIV
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