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Method used for ultrasonic treatment of waste water

A technology for ultrasonic treatment and waste water, which is applied in the direction of combustion methods, chemical instruments and methods, water/sewage multi-stage treatment, etc. It can solve the problems that cannot meet the requirements of sewage treatment, expensive equipment investment and operation costs, and affect the economic benefits of enterprises. Achieve the effects of easy incineration, fast processing speed and improved dehydration effect

Active Publication Date: 2015-12-23
江西中竹生物质科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original sewage treatment process and sewage treatment equipment are gradually unable to meet the sewage treatment requirements
For enterprises that use biological treatment for sewage treatment, if only the existing technology is used, the equipment investment and operation costs are very expensive, which seriously affects the economic benefits of the enterprise

Method used

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  • Method used for ultrasonic treatment of waste water

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Effect test

Embodiment 1

[0019] The present invention in concrete implementation, comprises the following steps:

[0020] (1) Dosing: the method is to put the pulping wastewater into the reactor first, then add the water purifying agent and stir evenly, so that the mass concentration of the water purifying agent in the wastewater is 0.1-25%, and then it is prepared into a wastewater purifying agent mixed solution;

[0021] The water purifying agent is one of polyacrylamide, polyethyleneimine, aluminum sulfate, ferric sulfate or polyferric sulfate;

[0022] (2) Heating reaction: conduct heating reaction on the mixed solution of wastewater purifying agent, so that the temperature of the mixed solution of wastewater purifying agent rises to 25-35°C;

[0023] (3) Ultrasonic reaction: heat and react the mixed liquid of wastewater purifying agent at an ultrasonic power of 0.5-1.2kW / m 3 , the frequency is 50~250kHz, and the ultrasonic response time is 0.5~4h;

[0024] (4) Degradation: After the ultrasonic...

Embodiment 2

[0028] In specific implementation, the present invention can also be realized by the following steps:

[0029] (1) Dosing: the method is to first put the pulping wastewater into the reactor, then add the water purifying agent and stir evenly, so that the mass concentration of the water purifying agent in the wastewater is 0.5-20%, and then it is prepared into a wastewater purifying agent mixed solution;

[0030] The water purifying agent is a mixture made by mixing two of polyacrylamide, polyethyleneimine, aluminum sulfate, ferric sulfate or polyferric sulfate with the same weight;

[0031] (2) Heating reaction: conduct heating reaction on the mixed solution of wastewater purifying agent, so that the temperature of the mixed solution of wastewater purifying agent rises to 28-33°C;

[0032] (3) Ultrasonic reaction: heat and react the mixed liquid of wastewater purifying agent at an ultrasonic power of 0.8-1kW / m 3 , the frequency is 100~200kHz, and the ultrasonic response time...

Embodiment 3

[0037] The present invention can also be realized by the following steps in concrete implementation:

[0038] (1) Dosing: first put the pulping wastewater into the reactor, then add the water purifying agent and stir evenly, so that the mass concentration of the water purifying agent in the wastewater is 0.1-15%, and prepare the mixed liquid of the wastewater purifying agent;

[0039] The water purifying agent is a mixture made by mixing three or more of polyacrylamide, polyethyleneimine, aluminum sulfate, ferric sulfate or polyferric sulfate with the same weight;

[0040] (2) Heating reaction: conduct heating reaction on the mixed solution of wastewater purifying agent, so that the temperature of the mixed solution of wastewater purifying agent rises to 29-30°C;

[0041] (3) Ultrasonic reaction: heat and react the waste water purification agent mixture at an ultrasonic power of 0.9kW / m 3 , the frequency is 150kHz, and the ultrasonic response time is 2h;

[0042] (4) Degrada...

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Abstract

The invention relates to a method used for ultrasonic treatment of waste water. The method comprises following steps: a water purifying agent is added into pulping waste water for uniform stirring so as to obtain a waste water-water purifying agent mixed solution; the waste water-water purifying agent mixed solution is delivered into a reactor for heating reaction, after heating reaction the processed waste water-water purifying agent mixed solution is subjected to ultrasonic reaction for 0.2 to 5h; precipitates formed in the obtained processed waste water are removed via filtering, and an obtained product is subjected to ultrasonic treatment for a second time so as to degrade organic pollutant residues in the waste water; precipitation is carried out, precipitates are removed, and obtained waste water is discharged or recycled; the obtained precipitates are subjected to drying and incineration so as to realize ultrasonic treatment of paper-making pulping waste water. Occupied area of equipment used in the method is small; treatment speed is fast; combination with other water treatment methods can be realized; strong oxidative radicals obtained via ultrasound cavitation effects are used for decoloration of waste water obtained via biochemical treatment; bacteria left in waste water after crushing are capable of improving dewatering effects of subsequent waste water sludge and increasing sludge dryness degree, so that incineration treatment of sludge is more convenient, and economic and social benefits are great.

Description

technical field [0001] The invention relates to wastewater treatment, in particular to a method for ultrasonically treating wastewater. Background technique [0002] With the tightening of the country's environmental policy, the water pollution problem has been paid more and more attention by people. With the continuous improvement of sewage treatment standards, higher requirements are put forward for the effect and efficiency of sewage treatment. The original sewage treatment process and sewage treatment equipment gradually cannot meet the sewage treatment requirements. For enterprises that use biological treatment methods for sewage treatment, if only the existing technology is used, the equipment investment and operation costs are very expensive, which seriously affects the economic benefits of the enterprise. [0003] The research on ultrasonic degradation of organic pollutants in water began in the 1990s. Ultrasonic technology has the characteristics of high efficienc...

Claims

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Application Information

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IPC IPC(8): C02F9/08F23G7/00
Inventor 刘洁
Owner 江西中竹生物质科技有限公司
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