C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/52 (2006.01) C02F 1/48 (2006.01)
Patent
CA 2725648
A wastewater treatment apparatus is provided that treats wastewater by performing flocculation and magnetic separation by adding a flocculant and magnetic powder to the wastewater and removing magnetic flocs generated thereby. The wastewater treatment apparatus can reduce energy requirements and recover magnetic powder from recovered magnetic flocs with high efficiency with a simple apparatus configuration. Magnetic powder and a flocculant are added to wastewater to generate magnetic flocs. The magnetic flocs are recovered by a magnetic force. After the pressure of the recovered magnetic flocs is increased to a high pressure, the flow rate is increased and the recovered magnetic flocs are decomposed and caused to flow to fluid piping 42 arranged around a cylindrical electromagnet 41. Magnetic powder is caused to attach to the fluid piping 42 by a magnetic force of the electromagnet 41, so that only magnetic powder is recovered. Temperature control and pH control are used in combination to improve the efficiency of decomposing the recovered magnetic flocs.
Isogami Hisashi
Miyabayashi Satoshi
Hitachi Plant Technologies Ltd.
Robic
LandOfFree
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