Waste water treatment system

A modular wastewater treatment plant comprising:

• a pretreatment chamber having a first generally oblate spheroid shape and including a front wall, a back wall opposite and substantially parallel to the front wall, a left side wall connected between opposite sides of the front wall and the back wall, a right side wall connected between other opposite sides of the front wall and the back wall, a top wall connected between a top side of each of the front wall, the back wall, the left side wall and the right side wall, and a bottom wall connected between a bottom side of each the front wall, the back wall, the left side wall and the right side wall;
• a first plurality of vertical ribs on the front wall of the pretreatment chamber and a second plurality of vertical ribs on the back wall of the pretreatment chamber, the first plurality of vertical ribs extending down the front wall of the pretreatment chamber onto and across the bottom wall and the second plurality of vertical ribs extending down the back wall of the pretreatment chamber onto and across the bottom wall to connect to the first plurality of vertical ribs;
• a pretreatment chamber inlet formed in the front wall of the pretreatment chamber;
• a pretreatment chamber access opening formed in the top wall of the pretreatment chamber;
• a pretreatment chamber outlet formed in the back wall of the pretreatment chamber;
• a first and a second plurality of side wall vertical ribs extending from opposite sides of the top wall of and vertically down the left and right side walls of the pretreatment chamber, respectively, and around and onto the bottom wall of the pretreatment chamber to connect to a side of one of the first plurality of vertical ribs or one of the second plurality of vertical ribs;
• an aeration chamber having a second generally oblate spheroid shape and including a front wall, a back wall opposite and substantially parallel to the front wall, a left side wall connected between opposite sides of the front wall and the back wall, a right side wall connected between other opposite sides of the front wall and the back wall, a top wall connected between a top side of each of the front wall, the back wall, the left side wall and the right side wall, and a bottom wall connected between a bottom side of each the front wall, the back wall, the left side wall and the right side wall;
• a third plurality of ribs on the front wall of the aeration chamber and nested with the second plurality of ribs on the back wall of the pretreatment chamber;
• a fourth plurality of ribs on the back 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;
• 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 of the aeration chamber;
• and a third and a fourth plurality of side wall vertical ribs extending from opposite sides of the top wall of the aeration chamber vertically down the left and right side walls, respectively, around and onto the bottom wall of the aeration chamber with the outer pair of the third and fourth plurality of side wall vertical ribs connecting to a side of one of the third plurality of vertical ribs or one of the fourth plurality of vertical ribs, and adjacent ends of the inner pair of the third and fourth plurality of side wall vertical ribs being connected by a curved rib section;
• and
• a clarification chamber having a third generally oblate spheroid shape and including a front wall, a back wall opposite and substantially parallel to the front wall, a left side wall connected between opposite sides of the front wall and the back wall, a right side wall connected between other opposite sides of the front wall and the back wall, a top wall connected between a top side of each of the front wall, the back wall, the left side wall and the right side wall, and a bottom wall connected between a bottom side of each the front wall, the back wall, the left side wall and the right side wall;
• a fifth plurality of ribs on a front wall of the clarification chamber and nested with the fourth plurality of ribs on a back wall of the aeration chamber;
• a sixth plurality of ribs extending from the top wall and down the back wall of the clarification chamber and around, onto and across the bottom 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 the top wall of the clarification chamber;
• a clarification chamber outlet formed in the back wall of the clarification chamber;
• a return opening formed in the front wall of the clarification chamber and positioned to connect to the return receiving opening upon the nesting of the fourth plurality of ribs with the fifth plurality of ribs to provide an open channel for fluid communication between the aeration chamber and the clarification chamber;
• and a first, single vertical rib extending from near a top end of and vertically down the left side wall and a second, single vertical rib extending from near a top end of and vertically down the right side wall, and a bottom wall of the clarification chamber.

A modular wastewater treatment plant comprising:

• a pretreatment chamber means having a first generally oblate spheroid shape and a first plurality of ribs on a first side wall of the pretreatment chamber means and a second plurality of ribs on a second and opposite side wall of the pretreatment chamber means, a pretreatment chamber inlet means formed in the first side wall of the pretreatment chamber means, a pretreatment chamber access means formed in a top wall of the pretreatment chamber means, a pretreatment chamber outlet means formed in the second side wall of the pretreatment chamber means, a first plurality of horizontal flange pairs spaced vertically apart from each other and extending from the second side wall of the pretreatment chamber and each flange defining a first fastener opening, and a bottom wall of the pretreatment chamber means;
• an aeration chamber means having a second generally oblate spheroid shape and a third plurality of ribs on a first side wall of the aeration chamber means and positioned to nest with the second plurality of ribs on the second side wall of the pretreatment chamber means, and a fourth plurality of ribs on a second and opposite side wall of the aeration chamber means opposite of the first side wall of the aeration chamber means, an aeration chamber inlet means formed in the first side wall of the aeration chamber means and positioned to connect to the pretreatment chamber outlet means upon the nesting of the second plurality of ribs with the third plurality of ribs, an aeration chamber access means formed in a top wall of the aeration chamber means, an aeration chamber outlet means formed in the second side wall of the aeration chamber means, a return receiving means, a second plurality of horizontal flange pairs spaced vertically apart from each other and extending from the first side wall of the aeration chamber and each flange defining a second fastener opening and the second plurality of flange pairs arranged to cooperate with the first plurality of horizontal flange pairs so that a first plurality of fastening means can be secured through the first fastener openings and the second fastener openings to connect the first plurality of horizontal flange pairs to the second plurality of horizontal flange pairs, a third plurality of horizontal flange pairs spaced vertically apart from each other and extending from the second side wall of the aeration chamber and each flange defining a third fastener opening, and a bottom wall of the aeration chamber means;
• and
• a clarification chamber means having a third generally oblate spheroid shape and a fifth plurality of ribs on a first side wall of the clarification chamber means and positioned to nest with the fourth plurality of ribs on the second side wall of the aeration chamber means, a clarification chamber inlet means formed in the first side wall of the clarification chamber means and positioned to connect to the aeration chamber outlet means upon the nesting of the fourth plurality of ribs with the fifth plurality of ribs, a clarification chamber access means formed in a top wall of the clarification chamber means, a clarification chamber outlet means formed in a back wall of the clarification chamber means, a return means positioned to connect to the return receiving means upon the nesting of the fourth plurality of ribs with the fifth plurality of ribs to provide an open channel for fluid communication between the aeration chamber means and the clarification chamber means, a fourth plurality of horizontal flange pairs spaced vertically apart from each other and extending from the first side wall of the clarification chamber and each flange defining a fourth fastener opening and the fourth plurality of flange pairs arranged to cooperate with the third plurality of horizontal flange pairs so that a second plurality of fastening means can be secured through the third fastener openings and the fourth fastener openings to connect the third plurality of horizontal flange pairs to the fourth plurality of horizontal flange pairs, and a bottom wall of the clarification chamber means.

A modular wastewater treatment plant comprising:

• a pretreatment chamber having a first generally oblate spheroid shape and including a front wall, a back wall opposite and substantially parallel to the front wall, a left side wall connected between opposite sides of the front wall and the back wall, a right side wall connected between other opposite sides of the front wall and the back wall, a top wall connected between a top side of each of the front wall, the back wall, the left side wall and the right side wall, and a bottom wall connected between a bottom side of each the front wall, the back wall, the left side wall and the right side wall;
• a first plurality of vertical ribs on the front wall of the pretreatment chamber and a second plurality of vertical ribs on the back 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 the top wall of the pretreatment chamber;
• a pretreatment chamber outlet formed in the back wall of the pretreatment chamber;
• a first plurality of substantially circumferential ribs extending from opposite sides of the top wall vertically down the left and right side walls, respectively, and around, onto and across the bottom wall of the pretreatment chamber;
• and a plurality of pretreatment gussets connected between an adjacent pair of the first plurality of substantially circumferential ribs, where one of the plurality of pretreatment gussets is connected between the adjacent pair of the first plurality of substantially circumferential ribs on the right side wall, another of the plurality of pretreatment gussets is connected between the adjacent pair of the first plurality of substantially circumferential ribs on the left side wall, and the remainder of the plurality of pretreatment gussets is connected between the adjacent pair of the first plurality of substantially circumferential ribs on the bottom wall;
• an aeration chamber having a second generally oblate spheroid shape and including a front wall, a back wall opposite and substantially parallel to the front wall, a left side wall connected between opposite sides of the front wall and the back wall, a right side wall connected between other opposite sides of the front wall and the back wall, a top wall connected between a top side of each of the front wall, the back wall, the left side wall and the right side wall, and a bottom wall connected between a bottom side of each the front wall, the back wall, the left side wall and the right side wall;
• a third plurality of ribs on the front wall of the aeration chamber and nested with the second plurality of ribs on the back wall of the pretreatment chamber;
• a fourth plurality of ribs on the back 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;
• 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 of the aeration chamber;
• and a second plurality of substantially circumferential ribs extending from opposite sides of the aeration chamber access opening across the opposite sides of the top wall around, onto and vertically down the left and right side walls, respectively, and around, onto and across the bottom wall of the aeration chamber;
• and a plurality of aeration gussets connected between adjacent pairs of the second plurality of substantially circumferential ribs, where three of the plurality of aeration gussets are connected between adjacent pairs of the second plurality of substantially circumferential ribs on the top wall, where two of the plurality of aeration gussets are connected between adjacent pairs of the first plurality of substantially circumferential ribs on the right side wall, another two of the plurality of aeration gussets is connected between the adjacent pairs of the second plurality of substantially circumferential ribs on the left side wall, and the remainder of the plurality of aeration gussets is connected between the adjacent pairs of the second plurality of substantially circumferential ribs in a spaced apart relationship on the bottom wall;
• and
• a clarification chamber having a third generally oblate spheroid shape and including a front wall, a back wall opposite and substantially parallel to the front wall, a left side wall connected between opposite sides of the front wall and the back wall, a right side wall connected between other opposite sides of the front wall and the back wall, a top wall connected between a top side of each of the front wall, the back wall, the left side wall and the right side wall, and a bottom wall connected between a bottom side of each the front wall, the back wall, the left side wall and the right side wall;
• a fifth plurality of ribs on a front wall of the clarification chamber and nested with the fourth plurality of ribs on a back wall of the aeration chamber;
• a sixth plurality of ribs extending from the top wall and down the back wall of the clarification chamber and around, onto and across the bottom 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 the top wall of the clarification chamber;
• a clarification chamber outlet formed in the back wall of the clarification chamber;
• a return opening formed in the front wall of the clarification chamber and positioned to connect to the return receiving opening upon the nesting of the fourth plurality of ribs with the fifth plurality of ribs to provide an open channel for fluid communication between the aeration chamber and the clarification chamber;
• and a first, single vertical rib extending from near a top end of and vertically down the left side wall and a second, single vertical rib extending from near a top end of and vertically down the right side wall, and a bottom wall of the clarification chamber.