# US 12,180,099 B2 · Water treatment compositions and methods of use

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- Number: US 12,180,099 B2
- Document ID: US12180099B2
- Status: Granted
- Kind: B2
- Application number: 14/505,309
- Filed: 2014-10-02
- Published: 2015-04-02
- Granted: 2024-12-31
- Earliest claimed: 2012-03-28
- Assignees: Dober Chemical Corporation
- Applicants: Dober Chemical Corp.
- Inventors: Francis Kneib; Everett J. Nichols; James R. Scott; Ryan Wietholter
- Web page: https://patentgrep.com/patent/US12180099B2

## CPC

- C02F 1/5245: {using basic salts, e.g. of aluminium and iron}
- C02F 1/5263: {using natural chemical compounds}
- C02F 2101/10: Inorganic compounds
- C02F 2101/105: {Phosphorus compounds}
- C02F 2101/32: Hydrocarbons, e.g. oil
- C02F 2103/10: from quarries or from mining activities
- C02F 2103/20: from animal husbandry
- C02F 2103/32: from the food or foodstuff industry, e.g. brewery waste waters
- C02F 2103/343: {from the pharmaceutical industry, e.g. containing antibiotics}
- C02F 2103/365: {from petrochemical industry (e.g. refineries)}
- C02F 2303/04: Disinfection
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the weight ratio of the uncharged guar to the polyaluminum chloride is about 1:34.

### Claim 3 (depends on 1)

The composition of claim 1, wherein the composition is made by a process comprising mixing the uncharged guar in a solid guar form and the polyaluminum chloride in a solid polyaluminum chloride form, and adding the water to the solid guar form and the solid polyaluminum chloride form.

### Claim 4

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.

### Claim 5 (depends on 4)

The method of claim 4, comprising:
mixing the uncharged guar in solid form and the polyaluminum chloride in solid form to form a solid mixture and adding water to said solid mixture.

### Claim 6

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.