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Organic waste water treaitng magnetic field and supersonic wave method

An organic waste water and ultrasonic technology, applied in the fields of magnetic field/electric field water/sewage treatment, mechanical oscillation water/sewage treatment, etc., can solve the problems of increased operating cost, difficult industrialization, large amount of electric energy, etc., to reduce fixed cost, easy to control, Ability-enhancing effect

Inactive Publication Date: 2002-04-17
南京大学环境学院
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Problems solved by technology

However, at the same time, the first type of combination process needs to use a large amount of high-cost oxidant, resulting in a significant increase in operating costs, and the second type of combination process also needs to use various artificial light sources, requiring a large amount of electric energy during operation
Practice has proved that the operating cost of the two types of combined processes per unit time is twice that of the single ultrasonic cavitation technology, so it is difficult to industrialize at present, which is the main obstacle for application in practical engineering

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  • Organic waste water treaitng magnetic field and supersonic wave method
  • Organic waste water treaitng magnetic field and supersonic wave method

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Embodiment Construction

[0014] The method of the present invention is, in the water treatment reactor, to industrial organic waste water or domestic sewage, carry out ultrasonic irradiation and magnetic field irradiation simultaneously, the frequency range of ultrasonic wave is 16kHz-10MHz, and its sound intensity is 0.1-12W / cm 2 , The magnetic flux density is 0.008-2T, and the cooperative radiation time is more than 5min.

[0015] For a specific organic wastewater, the above process parameters have optimal values. For different types of organic wastewater, due to the different types of organic matter contained, the generation of cavitation bubbles and molecular polarization conditions are different, the optimal values ​​of the above process parameters are also different. In general, the preferred frequency range of ultrasound is 20kHz-1MHz, and its sound intensity is 0.5-3W / cm 2 , The magnetic flux density is 0.020-1.0T, and the radiation time is more than 15min.

[0016] Since the sound field and...

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Abstract

In a water treating reactor, industrial organic waste water or domestic sewage is irradiated with supersonic wave and magnetic field simultaneously. The supersonic wave has a frequency range of 16 kHz to 10 MHz and a strength of 0.1-12 W / sq cm. The magnetic flux density is 0.008-2 T, and the combined irradiation time is over 5 min. The present invention utilizes magnetochemical effect to prevent and reduce the recombination of OH and H free radical pair produced in supersonic cavitation and this raise greatly the supersonic treatment effect of waste water. The method of the present invnetion is easy to control, high in efficiency and low in power consumption, and may be used widely.

Description

technical field [0001] The invention relates to a method for treating organic wastewater. Background technique [0002] At present, high-concentration toxic organic wastewater in some key industries such as printing and dyeing, medicine, chemical industry, and papermaking is one of the main reasons for the aggravation of water pollution in my country. The common feature of this kind of wastewater is that it is difficult to degrade in the environment, exists stably for a long time, and has bioaccumulation, which seriously affects human health and hinders the sustainable development of my country's economy. Therefore, the research and application of high-concentration refractory toxic organic wastewater is a hot spot in wastewater treatment technology today. [0003] For high-concentration refractory toxic organic wastewater, people have developed many high-efficiency advanced treatment processes, representative ones are activated carbon adsorption, macroporous resin adsorpti...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/36C02F1/48
Inventor 靳强郑正张全兴姜伟立张劲
Owner 南京大学环境学院
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