| 摘要 |
A waste water filter comprises a shield comprising a vertical peripheral wall defining a shield interior. The shield further includes an inlet for the entry of unfiltered wastewater into the shield interior. A shield filter element is disposed within the shield interior. An outlet in fluid communication with the second interior location for discharging filtered waste water is also included into the waste water filter. The shield filter element includes at least one filter surface having filter surface openings for the passage of relatively clear water while restricting the passage of solids larger than the openings. The shield filter element, when disposed within the shield, separates the shield interior into first and second interior locations. Unfiltered or partially filtered waste water in the first interior location is separated from filtered waste water in the second location by the shield filter element. The shield filter element is removable from the shield. Unfiltered or partially filtered waste water entering the shield interior after shield filter element removal will enter the first and second interior locations within the shield. The waste water filter Further includes an outlet filter, a gate valve, or proper outlet reservoir inlet opening positioning for preventing the flow of unfiltered or partially filtered waste water from the shield interior from passing through the outlet after the removal of the filter element from the shield. The outlet filter is typically disposed within the waste water filter independent of the shield filter element. The waste water filter may include filter elements comprising two or more filter surfaces which may be disposed in a concentric arrangement.
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