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72142results about "Water contaminants" patented technology

Particle electrode for efficiently removing various organic compounds and preparation method thereof

The invention discloses a particle electrode for efficiently removing various organic compounds and a preparation method thereof. The preparation method comprises the following steps of adding AgNO3 to isopropanol to obtain a solution A, adding treated Al2O3 to the solution A, filtering the solution to obtain a particle B and micro-emulsion X, and obtaining a particle D after washing the particle B with ethanol; adding the particle D to X to obtain a particle F after filtration; utilizing Ce(NO3)2, NiCl2, CuCl2, isopropanol and concentrated hydrochloric acid to prepare solutions B, C, D, E and F; adding the particle F to the solution B to obtain a particle I through filtration; adding the particle I to the solution C to obtain a particle J through filtration, washing the particle J with ethanol, and drying the particle J, thus obtaining a particle K; adding the particle K to the solution D to obtain a particle L through filtration, washing the particle L with ethanol, and drying the particle L, thus obtaining a particle M; adding M to E to obtain a particle N through filtration, washing the particle N with ethanol, and drying the particle N, thus obtaining a particle O; adding the particle O to the solution F to obtain a particle P through filtration, washing the particle P with ethanol, and drying and roasting the particle P for four hours, thus obtaining the needed particle electrode.
Owner:BEIJING NORMAL UNIVERSITY

Method and Apparatus for Demulsifying an Oil-Water Emulsion Via Ultrasonic

A method for demulsifying water-oil emulsions through ultrasonic action, comprises a step of making the water-oil emulsions flow through at least one ultrasonic acting region in a flow direction, wherein: within the ultrasonic acting region, a concurrent ultrasonic wave whose traveling direction is the same as the flow direction of the water-oil emulsions is generated by at least a one first ultrasonic transducer provided at the upstream end of the ultrasonic acting region, and at same time, a countercurrent ultrasonic wave whose traveling direction is opposite to the flow direction of the water-oil emulsions is generated by at least a one second ultrasonic transducer provided at the downstream end of the ultrasonic acting region; and the concurrent ultrasonic wave and the countercurrent ultrasonic wave act simultaneously on the water-oil emulsions which flow through the ultrasonic acting region, so as to demulsify the water-oil emulsions. After being demulsified, the water-oil emulsions gravity settle and separate, or settle and separate under an electric field, so as to be dewatered. The present invention can apply to various water-oil separating technologies in the procedures from mining to processing of crude oil.
Owner:CHINA PETROCHEMICAL CORP
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