Method and apparatus for processing and re-using of gray water for flushing toilets
AssigneeAirbus Deutschland GmbH
InventorsClaus Hoffjann, Hans-Juergen Heinrich
Life of this patent
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Abstract
In order to use so-called gray water for the flushing of toilets, for example in a conveyance such as a passenger aircraft, the gray water is passed through at least one filter, preferably through a coarse filter followed by a fine filter, into a treatment tank where it is anodically oxidized. The rinsing is performed by a pump that may be a rotary pressure pump or a piston cylinder pump. The pump passes the processed or oxidized water through an excess pressure valve and through at least one spray nozzle into a toilet bowl.
Claims23
A method for processing and reusing gray water for flushing a toilet bowl, comprising the steps:
- a) filtering said gray water to provide filtered water,
- b) collecting said filtered water in a processing tank,
- c) processing said filtered water by anodically oxidizing said filtered water in said processing tank to provide processed water, and
- d) using said processed water for flushing said toilet bowl,
- wherein said filtering comprises a coarse filtering and a fine filtering for removing dirt, coloring agents, and odor-causing agents from said gray water, and wherein said fine filtering is performed in said processing tank and said coarse filtering is performed outside said processing tank.
An apparatus for processing and reusing gray water for flushing a toilet bowl, comprising:
- a) filter means for filtering said gray water to provide filtered water,
- b) a processing tank for collecting said filtered water in said processing tank,
- c) anodic oxidizer means for processing said filtered water by anodically oxidizing said filtered water in said processing tank to provide processed water, and
- d) means for using said processed water for flushing said toilet bowl,
- wherein said filter means comprise a coarse filter and a fine filter for removing dirt, coloring agents, and odor-causing agents from said gray water, and wherein said fine filter is arranged in said processing tank and said coarse filter is arranged outside said processing tank.
Dependencies are inferred from the claim text.