| 摘要 |
An improved sewer apparatus comprising a maintenance hole and an influent line for carrying sewage to the maintenance hole, a vortex form disposed substantially within the maintenance hole which accepts the sewage from the influent line, the vortex form having a spiral channel of decreasing diameter, and a conduit also disposed within the maintenance hole and fluidly connected to the vortex form and extending substantially downwardly from the vortex form to a flow exit near the maintenance hole base. The improved sewer apparatus reduces the release of odorous and corrosive gas emissions from sewage into the sewer and surrounding environment and improves aeration of the sewage.
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