Small surface liquid decantation apparatus and process for making same
First Claim
1. A small surface liquid decantation apparatus comprising a main revolution tank, with a central inlet, an exhaust for the products decanted by the bottom and an exhaust on the upper peripheral edge for the purified liquid, wherein the main body comprises arcuate compartments defined at least in part by adjacent arcuate walls and in communication with the lower portion of the main body, provided with the exhaust for the decanted products, at least one indented zone, forming an overflow channel for exhausting the upper layer of purified water, being formed in the upper edge of a wall of each compartment, the said indented zones being circumferentially spaced from one compartment to the next.
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Abstract
The invention relates to a small surface liquid decantation apparatus and process for making same.
The decantation apparatus consists of a main tank of revolution (1) with a central inlet (8), an exhaust (3) of the decanted products by the bottom and an exhaust (13) on the upper peripheral edge for the purified liquid. The main body (1) comprises annular compartments defined laterally by coaxial walls of revolution (4 to 7) and in communication with the lower portion of the main body (1), provided with an exhaust (3). An indented zone (11, 13 to 17) forming an overflow channel for exhausting the upper layer of purified liquid is provided in the upper edge of each wall (4 to 7). Said indented zones (11, 13 to 17) are substantially diametrically opposite each other from one wall to the next.
Current applications for decantation.
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Citations
21 Claims
- 1. A small surface liquid decantation apparatus comprising a main revolution tank, with a central inlet, an exhaust for the products decanted by the bottom and an exhaust on the upper peripheral edge for the purified liquid, wherein the main body comprises arcuate compartments defined at least in part by adjacent arcuate walls and in communication with the lower portion of the main body, provided with the exhaust for the decanted products, at least one indented zone, forming an overflow channel for exhausting the upper layer of purified water, being formed in the upper edge of a wall of each compartment, the said indented zones being circumferentially spaced from one compartment to the next.
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13. A small surface liquid decantation apparatus consisting of a main body of revolution with a central inlet, an exhaust for the decanted products by the bottom and an exhaust of the purified liquid on the upper peripheral edge of said body, the upper portion of the main body comprising a spiral wall connecting the inlet to the exhaust of the purified liquid, wherein said exhaust is localized on the substantially circular upper peripheral edge of the main body;
- the spiral wall is vertical; and
radial partitions are positioned on the spiral pathway defined by the said wall, the upper edge of said radial partitions being below the water level. - View Dependent Claims (14, 15)
- the spiral wall is vertical; and
- 16. A liquid decantation process comprising the steps of providing a space of revolution filled with a liquid mass, continuously delivering to the center of the space of revolution and into the liquid mass a liquid holding in suspension particles having a density greater than the density of the liquid, presenting the movement of the liquid mass in a radial direction and effecting vertical decantation of the dense particles, and at the same time providing for movement of a surface layer of the liquid generally in a horizontal plane with each unit volume of the liquid in the surface layer progressively moving from the center of the space of revolution to an exhaust at the periphery of the space of revolution while controlling the path of movement of each unit volume of the liquid in the horizontal plane to be along successive spiral fractions, and removing the dense particles from a lower portion of the space of revolution.
Specification