초록 ▼

A method and system combining filtration and ion-exchange structures for removing contaminants from liquids. In overall concept, contaminated liquid is passed through filtering mediums to remove particulate matter from the incoming contaminated liquid. Organics are removed from the liquid by passage

A method and system combining filtration and ion-exchange structures for removing contaminants from liquids. In overall concept, contaminated liquid is passed through filtering mediums to remove particulate matter from the incoming contaminated liquid. Organics are removed from the liquid by passage through adsorbent non-ionic type resins. The liquid is then passed through strong acid cation exchange resins, weak base anion exchange resins, weak acid cation exchange resins, and strong base anion exchange resins arranged in a predetermined location in the liquid flow path to provide optimized contaminant removal. One of the optimization techniques is through the pH adjustment of the liquid at predetermined points in the flow path. Additionally, the liquid to be purified is passed through mixed bed polisher resins as well as chelation resins to provide a final substantially contaminant free liquid which is returned to use in a closed loop fashion.

대표청구항 ▼

A method of purifying mineral contaminated water, said water including mineral contaminants of copper, cadmium, chromium (Cr+6), iron, cyanide, and phosphate, including the steps of: (a) dividing said mineral contaminated water from a storage tank into a first stream and a second stream; (b) transpo

A method of purifying mineral contaminated water, said water including mineral contaminants of copper, cadmium, chromium (Cr+6), iron, cyanide, and phosphate, including the steps of: (a) dividing said mineral contaminated water from a storage tank into a first stream and a second stream; (b) transporting said first stream through a first plurality of ion exchange resins connected in series flow each to the other including series passage through a strong acid cation exchange resin in the hydrogen form to provide an efflux having a pH value within the range of 1.0 and 5.0, and a weak base anion exchange resin in the hydroxyl form to provide an efflux having a pH value within the range of 7.0 and 10.0, (c) simultaneously passing said second stream through a second plurality of ion exchange resins coupled each to the other in series flow including consecutive series flow through a strong base anion exchange resin in the hydroxyl form to provide an efflux pH value within the range of 7.0-10.0, and a weak acid cation exchange resin in the hydrogen form to provide an efflux having a pH value within the range of 3.0-7.0; and (d) combining liquid efflux of said first and second plurality of ion exchange resins for return to said storage tank.