Anti-scaling composition for water systems
AssigneeCabot Corporation
InventorsMei Xin, William K. Barron, Timothy Wruble
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Abstract
Techniques are described for preparing a water filtration composition that includes activated carbon having an ash content of at least 10 wt. % and particles of a solubilizing agent. The solubilizing agent forms a water-soluble complex with cations (e.g., calcium ions). This increases the solubility of calcium ions and other scale-forming ions in water, thus suppressing scale formation on interior surfaces of water processing infrastructure. The activated carbon and the solubilizing agent are processed to have particle sizes in a same range, thus enabling the activated carbon and the solubilizing agent to be thoroughly mixed together.
Claims21
A composition comprising:
- activated carbon including an ash content of at least 10 weight (wt.) %;
- and
- solubilizing agent particles at a concentration from 0.1 wt. % to 5.0 wt. % of the activated carbon, wherein
- the activated carbon and the solubilizing agent particles each have a D50 particle size between 5 microns and 100 microns, the solubilizing agent particles being admixed with the activated carbon.
12-16. (canceled)
A method of treating a water supply, the method comprising:
- forming a water-soluble complex with cations by contacting water to be treated with a composition comprising activated carbon admixed with a solubilizing agent, the carbon and the solubilizing agent having a D50 particle size between 5 microns and 100 microns, and the agent comprising at least one of pyrophosphate, polyphosphate, hexametaphosphate, and polyacrylic acid.
25-56. (canceled)
Dependencies are inferred from the claim text.