Water treatment compositions and methods of use
AssigneeDober Chemical Corporation
InventorsFrancis Kneib, Everett J. Nichols, James R. Scott, Ryan Wietholter
Life of this patent
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Abstract
Methods for clarifying water, reducing turbidity of water, and removing phosphate from water include adding a water treatment composition having an aluminum-containing coagulant, and a natural non-charged polysaccharide, such as guar. The aluminum-containing compound can include polyaluminum chloride, aluminum chlorohydrate, polyaluminum chlorohydrate, aluminum sulfate, sodium aluminate, polyaluminum sulfate, polyaluminum silicate chloride, polyaluminum silicate sulfate, or a combination thereof.
Claims6
A composition consisting of the following components:
- polyaluminum chloride having a basicity greater than 65% and less than 70%;
- uncharged guar;
- and
- water,
- wherein a weight ratio of the polyaluminum chloride to the uncharged guar in the composition is between 10:1 and 100:1;
- said composition being capable of clarifying or reducing a turbidity of a turbid water when an effective amount of said composition is mixed therewith.
A method for clarifying or reducing a turbidity of drill water, the method comprising:
- mixing a composition consisting of the following components:
- polyaluminum chloride having a basicity greater than 65% and less than 70%;
- and
- uncharged guar, wherein a weight ratio of the polyaluminum chloride to the uncharged guar in the composition is between 10:1 and 100:1;
- with the drill water;
- forming agglomerations in the drill water containing the composition that is mixed;
- and
- removing the agglomerations from the drill water,
- thereby clarifying or reducing the turbidity of the drill water.
A method for clarifying or reducing a turbidity of a process water comprising suspended materials from oil or gas drilling, hydraulic fracturing, or oil refinery operations, the method comprising:
- the step of forming a mixture comprising mixing a composition consisting of the following components:
- polyaluminum chloride having a basicity greater than 65% and less than 70%;
- and
- uncharged guar;
- and
- water,
- wherein a weight ratio of the polyaluminum chloride to the uncharged guar in the composition is between 10:1 and 100:1;
- with the process water from oil refinery operations containing suspended materials to form a mixed liquid;
- forming agglomerations in the mixed liquid;
- removing the agglomerations from the mixed liquid, thereby clarifying or reducing the turbidity of the process water.
Dependencies are inferred from the claim text.