Ultrasonic demulsification device for rendering of scouring wastewater

Abstract

The invention discloses an ultrasonic demulsification device for rendering of scouring wastewater, which is characterized by comprising an ultrasonic radiation tank, a preheater in front of the ultrasonic radiation tank and a settling tank in rear of the ultrasonic radiation tank. The scouring wastewater enters the preheater through a first sewage pump, a preheater outlet is communicated with the upper end of the ultrasonic radiation tank, and a plurality of ultrasonic generators are uniformly distributed on a top cover and the tank wall of the ultrasonic radiation tank. The bottom of the ultrasonic radiation tank is provided with an outlet which is communicated with an inlet at the upper end of the settling tank through a second sewage pump, an oil skimmer is arranged at the top of the settling tank, the middle of the settling tank is provided with a water outlet, and the bottom of the settling tank is provided with a sludge outlet.

Description

technical field [0001] The invention relates to a demulsification device for emulsion, in particular to an ultrasonic demulsification device for extracting fat from wool scouring wastewater. Background technique [0002] Wool scouring wastewater is high-concentration organic wastewater discharged from the wool scouring process, which mainly contains sediment, sheep manure, and also contains a small amount of detergent, wool fiber and lanolin. Lanolin, also known as wool wax, is a brown-yellow viscous substance whose main chemical composition is a mixture of esters of sterols, fatty alcohols and higher fatty acids and a small amount of free sterols, fatty alcohols and hydrocarbons. It is lipophilic and hydrophobic, has strong emulsifying power, stable chemical properties and has affinity to human skin. It is widely used in the manufacture of pharmaceutical ointments, cosmetics, lubricants, antirust agents and raw materials for fine chemical products. [0003] At present, the...

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Problems solved by technology

[0004] There are four main methods for extracting lanolin from wool washing wastewater: (1) centrifugation, the treated wastewater can be reused, but the recovery rate is low and the energy consumption is high

(2) Acid analysis method, the gained lanolin of this method is black and has stench, and acid consumption is big, increases follow-up wastewater treatment difficulty

(3) The solvent method can recover 85% to 90% lanolin; but the investment is large and the solvent loss is large

(4) Flocculation extraction method, which has simple process, low investment and high recovery rate, but it will increase the difficulty of subsequent sludge treatment, and solvent extraction and fat extraction also have the problems of pollution and large loss

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