Composition for water clarification

• US 6,136,219 A
• Filed: 07/01/1999
• Issued: 10/24/2000
• Est. Priority Date: 07/01/1999
• Status: Expired due to Fees

• Current Assignee: Maureen Casey
• Original Assignee: Stephen W. Decker
• Inventors: Decker, Stephen W.
• Primary Examiner(s): Warden, Jill
• Assistant Examiner(s): CROSS, LATOYA I
• Application Number:
  US09/346,433
• Time in Patent Office: 481 Days
• Field of Search: 252/180, 252/175, 252/178, 252/181, 424/76.5
• US Class Current: 252/180
• CPC Class Codes: C02F 5/125 combined with inorganic substances

Abstract

The composition for clarifying a body of water comprises at least an anionic polyacrylamide, aluminum chloral hydrate or aluminum oxide and citric acid combined in amounts sufficient to produce a clarification of a body of water. If necessary, calcium carbonate or calcium sulfate may be included in the composition to neutralize pH in acidic environments for increased effectivity.

Claims

1. A composition for use in clarifying a body of water consisting essentially of at least one element selected from the group of calcium sulfate and calcium carbonate in the amount of 0% to 99% by weight of the composition;

an anionic high molecular weight polyacrylamide having more than 100,000 monomer units per molecule in the amount of 1% to 99% by weight of the composition;

citric acid in the amount of 0.01% to 20% by weight of the composition; and

of at least one compound selected from the group of aluminum chloral hydrate and aluminum oxide in the amount of 1% to 99% by weight of the composition.

2. A composition for use in clarifying a body of water consisting essentially of 0% to 99% at least one element selected from the group of calcium sulfate and calcium carbonate by weight of the composition;

1.0% to 99% an anionic high molecular weight polyacrylamide having more than 100,000 monomer units per molecule by weight of the composition;

0.01% to 20% citric acid by weight of the composition; and

1% to 99% of at least one compound selected from the group of aluminum chloral hydrate and aluminum oxide by weight of the composition.

3. A composition for use in clarifying a body of water where no pH balancing is required consisting essentially of, by weight, 49% an anionic high molecular weight polyacrylamide having more than 100,000 monomer units per molecule;

approximately 49% at least one compound selected from the group of aluminum chloral hydrate and aluminum oxide, and 2% citric acid.

4. A composition for use in clarifying a body of water where pH balancing is required consisting essentially of, by weight, 46% an anionic high molecular weight polyacrylamide having more than 100,000 monomer units per molecule, 46% at least one compound selected from the group of aluminum chloral hydrate and aluminum oxide, 6% of at least one compound selected from the group of calcium carbonate and calcium sulfate;

and approximately 2% citric acid.