Water treatment device

Details Water treatment device Water treatment device

2006-03-14

2006-03-14

Lawrence, Frank M. (Department: 1724)

Liquid purification or separation

With preliminary chemical manufacture

C210S205000, C210S243000, C204S661000, C204S666000

Reexamination Certificate

active

07011750

ABSTRACT:
The object of the present invention is to provide a water treatment device in which temperature does not affect performance in nitrogen removal. Water circulates in a first anaerobic filter bed chamber5, a second anaerobic filter bed chamber10, a contact aeration chamber14, a sedimentation chamber19, and an electrolytic chamber59for phosphorus removal. The supernatant in sedimentation chamber19flows into a disinfection chamber21and is then sent to an electrolytic chamber100for nitrogen removal. An electrode pair is provided inside electrolytic chamber100. Halogen ions present in the water are oxidized on the anode side. After halogen gas is generated, this gas reacts with water and generates hypohalous acid. On the cathode side, the nitrogen components in the water are converted to nitrate ions, and these nitrate ions are further converted to ammonium ions. The hypohalous acid and ammonium ions react, and the nitrogen components are converted to nitrogen gas by way of chloramine.

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