Ultrosonic wave concerted biological adsorption water treating method

A biological adsorption and ultrasonic technology, applied in the field of water treatment, can solve the problems of high energy consumption and high production cost, and achieve high mass transfer efficiency, high removal rate and good removal effect

Inactive Publication Date: 2004-12-22
BEIJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In recent years, a water treatment method called the ozone biological activated carbon filter method has been adopted in China. The disadvantage of this method is that it consumes a lot of energy, the activated carbon needs to be replaced periodically, and the production cost is relatively high.

Method used

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  • Ultrosonic wave concerted biological adsorption water treating method
  • Ultrosonic wave concerted biological adsorption water treating method
  • Ultrosonic wave concerted biological adsorption water treating method

Examples

Experimental program
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Effect test

Embodiment 1

[0012] Such as figure 1 As shown, under the condition that the water temperature is normal temperature, the polluted surface water whose index concentration of potassium permanganate is less than 12mg / l is lifted by the water pump to the sedimentation tank for coagulation and sedimentation, and the water is mixed with FeCl 3 As a coagulant, the effluent after coagulation and sedimentation flows into the ultrasonic synergistic biosorption reactor under pressure. The effective volume of the reactor is 11 cubic meters. The residence time in the reactor was 30 minutes. Fill the reactor with 1 ton of powdered activated carbon with a particle size of 200 meshes, microorganisms are attached to the surface and pores of the activated carbon, and a blower is used to blow air to the porous aeration pipe installed in the reactor, and the activated carbon and water are discharged. Aeration, the ratio of the aeration volume to the influent flow rate is 8:1. Use a liquid whistle ultrasonic...

Embodiment 2

[0014] Such as figure 2 As shown, under the condition that the water temperature is lower than 15°C, the polluted surface water whose index concentration of potassium permanganate is less than 12 mg / l is lifted by the water pump to the sedimentation tank for coagulation and sedimentation, and is treated with FeCl 3 As a coagulant, the effluent after coagulation and precipitation flows into the ultrasonic synergistic biosorption reactor under pressure. The effective volume of the reactor is 11 cubic meters. The residence time of water in the reactor was 30 minutes. Fill the reactor with 1 ton of granular activated carbon with a particle size of 3mm. Microbes are attached to the surface and pores of the activated carbon, and the air compressor is used to blow air to the microporous aeration head installed in the reactor. and water for aeration, the ratio of the aeration volume to the influent flow rate is 10:1. Corresponding to the granular activated carbon, use the probe-typ...

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Abstract

The invention relates to a water treatment method of ultrasonic synergistic biological adsorption. Granular or powdery activated carbon is filled into the reactor, microorganisms are attached to the surface and pores of the activated carbon, and the activated carbon is made to flow in the reactor through water flow and aeration. Under the condition of better mass transfer of biosorption to polluted water, it can achieve high-efficiency removal of biodegradable and difficult-to-biodegradable organic matter. Activated carbon will be continuously regenerated through the metabolic activities of microorganisms and does not need to be replaced. Use ultrasonic waves with a frequency of 20-40kHz and a power of 5-40w to irradiate activated carbon with microorganisms attached to it, to improve the mass transfer capacity of the microbial cell wall, enhance the activity of enzymes, and make the microorganisms have a stronger ability to decompose refractory organic matter, even in low water temperatures. At 15°C, the removal rate of potassium permanganate index in polluted water source water is still above 40%. When the method of the present invention is applied to a water supply treatment system that requires higher water quality, the investment is small, the efficiency is high, and the purification effect is good.

Description

technical field [0001] The invention relates to a water treatment method, in particular to an ultrasonic wave cooperative biological adsorption water treatment method, which is suitable for purifying surface water or groundwater suffering from organic pollution and eutrophication pollution. Background technique [0002] At present, organic pollution and ammonia nitrogen pollution are common in my country's source water. The traditional drinking water purification process is basically powerless, and the quality of the effluent water cannot meet the drinking water standards. For polluted or slightly polluted source water in my country, biological pretreatment and purification methods have been researched, developed and promoted, that is, biological contact oxidation method or biological filter method. This method is adopted when the water source temperature is higher than 15°C The removal rate of ammonia nitrogen can reach 80-90%, and the removal rate of p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02C02F9/14
Inventor 刘红
Owner BEIJING NORMAL UNIVERSITY
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