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Ultrasonic coupled membrane bioreactor for treating difficultly-degradable organic waste water

A technology of membrane bioreactor and ultrasonic coupling, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, mechanical oscillation water/sewage treatment, etc., can solve the problems of low treatment efficiency and long residence time, etc. Achieve the effect of reducing operating costs, slowing down membrane fouling, and realizing online cleaning

Inactive Publication Date: 2011-08-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the problems of low treatment efficiency and long residence time in the biological treatment process of refractory organic wastewater, and further provides an ultrasonic coupling membrane bioreactor for treating refractory organic wastewater

Method used

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  • Ultrasonic coupled membrane bioreactor for treating difficultly-degradable organic waste water
  • Ultrasonic coupled membrane bioreactor for treating difficultly-degradable organic waste water
  • Ultrasonic coupled membrane bioreactor for treating difficultly-degradable organic waste water

Examples

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Effect test

Embodiment 1

[0013] Example 1: Process flow for treating high-concentration refractory organic wastewater.

[0014] Such as figure 1 As shown, for high-concentration refractory organic wastewater, it first enters the anaerobic reactor. On the one hand, part of the organic pollutants in the wastewater are removed to reduce the concentration of the wastewater. On the other hand, the structure of refractory organic substances is partially destroyed by anaerobic action. , improve its biodegradability, and create conditions for further aerobic treatment; then the wastewater enters the ultrasonically coupled membrane bioreactor, and an ultrasonic transducer is installed at the bottom of the membrane bioreactor, which is also connected to the ultrasonic generator, and the The high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation and propagated into the ultrasonic-coupled membrane bioreactor. The ultrasonic frequency is 10-35KHz,...

Embodiment 2

[0015] Example 2: Process flow for treating medium and low concentration refractory organic wastewater.

[0016] Such as figure 2 As shown, for medium and low concentrations of refractory organic wastewater directly into the ultrasonic coupling membrane bioreactor, an ultrasonic transducer is installed at the bottom of the membrane bioreactor, and the transducer is also connected to the ultrasonic generator, and the ultrasonic generator emits The high-frequency oscillation signal is converted into high-frequency mechanical oscillation and transmitted to the ultrasonic coupling membrane bioreactor. The frequency of the ultrasonic wave is 10-35KHz, the ultrasonic irradiation intensity is 0.05-0.2W / cm2, and the irradiation time is 2-20min. The irradiation period is 12-48 hours; the sludge concentration of the coupling reactor is 2-10g / L. Under the joint strengthening effect of ultrasonic wave and ultrafiltration membrane, the degradation rate of refractory organic matter can be...

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Abstract

The invention discloses an ultrasonic coupled membrane bioreactor for treating difficultly-degradable organic waste water, belonging to the technical field of sewage treatment. The bioreactor is characterized in that: the bottom of a membrane bioreactor is provided with an ultrasonic transducer; the ultrasonic transducer is connected with an ultrasonic generator and is used for converting a high-frequency oscillation signal transmitted by the ultrasonic generator into high-frequency mechanical oscillation and transmitting the high-frequency mechanical oscillation to the ultrasonic coupled membrane bioreactor; the frequency of ultrasonic waves is between 10 KHz and 35 KHz; the ultrasonic radiation intensity is between 0.05 W / cm<2> and 0.2 W / cm<2>; the radiation time is between 2 minutes and 20 minutes; the radiation period is between 12 hours and 48 hours; and the sludge concentration of the ultrasonic coupled membrane bioreactor is between 2 g / L and 10 g / L. By adopting the ultrasonic coupled membrane bioreactor, the biological activity and mass transfer capability are enhanced, the degradation efficiency of a difficultly-degradable organic matter is increased, the membrane pollution is reduced, online cleaning of a membrane component is realized, and the running cost of the membrane bioreactor is lowered.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to an ultrasonic coupling membrane bioreactor for treating refractory organic waste water. Background technique [0002] Refractory organic pollutants mainly come from industries such as pesticides, petrochemicals, printing and dyeing, pharmaceuticals, plastics and rubber, including phenols, halogenated organics, polycyclic aromatics, nitro compounds, and certain elemental compounds (such as organic phosphorus, organic mercury, etc.) , sulfides, sulfones, certain heterocyclic compounds, compounds containing double bonds and triple bonds or tertiary quaternary carbon atoms, etc. Such organic substances generally have teratogenic, mutagenic, and carcinogenic effects, and if they are discharged without treatment, they will cause great harm to the environment. [0003] The environmental problems caused by refractory organic matter are increasingly being paid attention to, and man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/36
Inventor 金若菲周集体王竞吕腾飞
Owner DALIAN UNIV OF TECH
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