Patent ID: 8137544
Filing Date: 2012-03-20
Classification: C02F,Y02W

Abstract:
1. A modular wastewater treatment plant comprising: a pretreatment chamber having a first generally oblate spheroid shape with a first plurality of vertical ribs on a front wall of the pretreatment chamber, a second plurality of vertical ribs on a back wall of the pretreatment chamber opposite the front wall of the pretreatment chamber, a pretreatment chamber inlet formed in the front wall of the pretreatment chamber, a pretreatment chamber access opening formed in a top wall of the pretreatment chamber, a pretreatment chamber outlet formed in the back wall of the pretreatment chamber, and a bottom wall of the pretreatment chamber; an aeration chamber having a second generally oblate spheroid shape and a third plurality of vertical ribs on a front wall of the aeration chamber and positioned to nest with the second plurality of vertical ribs on the back wall of the pretreatment chamber, and a fourth plurality of vertical ribs on a back wall of the aeration chamber opposite of the first side wall of the aeration chamber, an aeration chamber inlet formed in the front wall of the aeration chamber and connected to the pretreatment chamber outlet for fluid communication there through and the second plurality of vertical ribs nested with the third plurality of vertical ribs, an aeration chamber access opening formed in a top wall of the aeration chamber, an aeration chamber outlet formed in the back wall of the aeration chamber, a return receiving opening formed in the back wall below the aeration chamber outlet, and a bottom wall of the aeration chamber; and a clarification chamber having a third generally oblate spheroid shape and a fifth plurality of vertical ribs on a front wall of the clarification chamber nested with the fourth plurality of vertical ribs on a back wall of the aeration chamber, a sixth plurality of vertical ribs on a back wall of the clarification chamber, a clarification chamber inlet formed in the front wall of the clarification chamber and connected to the aeration chamber outlet, a clarification chamber access opening formed in a top wall of the clarification chamber, a clarification chamber outlet formed in the back wall of the clarification chamber, a return connected to the return receiving opening to provide an open channel for fluid communication between the aeration chamber and the clarification chamber, and a bottom wall of the clarification chamber.