Filter free flow-through treatment with acoustic separator

T. Kambayashi*, Hitachi, Ltd., Research & Development Group, Japan

Separation of suspended matter from mixtures is important in many areas such as the petrochemical industry, the recovery of oil from emulsions and biomedical applications. The separation by use of ultrasonic standing wave, which is formed by the superposition of an incident wave travelling from the acoustic transducer and a reflected wave moving from the reflector, is one of the state of the art gentle separation technologies. This acoustic separation technology has been developed in the past few decades. Acoustic separation technology can be operated in either batch or flow-through mode. The flow-through mode is a continuous system and thus could realize high-throughput separation. A flow-through acoustic separation system in which there is a lot of flexibility in the design is reported here.

The prototype of the flow-through system was designed to be applied for the in-line use. Therefore, it is named as In-line Acoustic Separator (IAS). IAS is composed of an in-port unit, an ex-port unit and some acoustic units. Contaminated tap water with Al2O3 particle was used as the model suspension to demonstrate the IAS. Particle removal ratio, which was calculated from the turbidity of the model suspension before/after treatment, was used to evaluate the acoustic separator performance. The particle removal ratio increased up to...

Session: L10 - Short Oral + Poster Presentations
Day: 14 March 2018
Time: 14:45 - 16:45 h

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