| 摘要 |
A waste water filter apparatus includes a filter vessel, a filter, and a pump. The filter vessel acts as a buffer in which waste water enters at the bottom and exits at the top. While the water is in the filter vessel, it is pumped from the bottom by the pump through the filter and back to the top of the filter vessel. According to a preferred embodiment, the waste water is filtered as many as six times before it exits the filter vessel. Should the pump fail, the flow of water through the filter vessel is not impeded in any way. During backwash, water is pumped through the filter in the reverse direction and into the filter vessel above the bottom of the filter vessel and exits the filter vessel below the top. This results in the capture of backwashed filter media in the filter vessel where it will be returned to the filter when the filter mode is next activated. The backwash water exits the filter vessel below the clean water exit into a sludge holding tank.
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