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| Number | Title | Issue Date |
| 7276155 | Waste treatment apparatus with integral membrane apparatus A wastewater treatment method and apparatus including a denitrification (anoxic) chamber for denitrifying wastewater, an aeration basin with Bio-Wheel for aerating the wastewater, and a membrane device in which sludge particles are separated out of the wastewater, l... | 10/02/2007 |
| 6613229 | Waste treatment method and apparatus with denitrification chamber A waste treatment method and apparatus including a denitrification chamber for denitrifying waste, an aeration basin for aerating the waste, and a clarifying device in which sludge particles separate out of the waste, leaving discharge and reusable sludge... | 09/02/2003 |
| 6572774 | Waste treatment method and apparatus with integral clarifier A waste treatment method and apparatus including an aeration basin for holding waste, an aerating device for aerating the waste and an integral clarifier in which sludge particles separate out of the waste, leaving discharge water and recycled sludge. Bet... | 06/03/2003 |
