Basin Water, Inc.

Other

Envirogen Technologies, Inc.

Gerald A Guter

Peter L Jensen

Dan Ziol

The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The invention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.

High efficiency ion exchange system for removing arsenic contaminants from water

The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The intention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.

High efficiency ion exchange system for removing nitrate contaminants from water

High efficiency ion exchange system for removing perchlorate contaminants from water

High efficiency ion exchange system and method for removing chromium from water

The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operation position to another as is required in moving bed ion exchange water purification systems. The invention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.

High efficiency ion exchanges system for removing contaminants from water

An ion exchange process for removing arsenic from drinking water is disclosed which uses a mixed ion regenerant and generates minimal levels of waste.

Zero brine, zero rinse water process for treatment of contaminated drinking water for removal of arsenic

High efficiency ion exchange system for removing contaminants from water

The disclosed invention is a fixed bed ion exchange system from removing arsenic from water. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The invention combines features of single fixed bed ion exchange systems with those of a moving bed system.

High efficiency ion exchange system for removing arsenic from water

A process for removing nitrate ions from a contaminated aqueous feed solution containing the same, and also chloride ion, by forcing the solution through a reverse osmosis membrane which permits passage of nitrate ions through the membrane and into the product water while rejecting chloride ion and other anions such as sulfate and bicarbonate, and concentrating such anions in the brine waste water. An anion exchange resin bed charged in the chloride form is placed in the product water during the reverse osmosis operation. Reverse osmosis product water containing nitrate is treated by the anion exchange resin bed to remove the nitrate ions and replace them with chloride ions. The resulting product water is essentially free of the nitrate impurity and a concentrated waste brine stream is obtained containing essentially chloride salts. In a preferred embodiment, when such anion exchange bed has exhausted the chloride ions and becomes loaded with nitrate ions, the resulting anion exchange resin charged with nitrate is placed in the concentrated waste brine stream to regenerate the anion exchange resin with an equivalent amount of chloride ion, liberating the nitrate ion in concentrated form into the waste brine concentrate stream from the reverse osmosis system. Thus, ionic impurities such as nitrate ion are concentrated in the waste brine solution. The same process will remove contaminant ions similar to nitrate such as arsenate, selenate and borate.

Process for purification of contaminated water

A water purification unit particularly adapted for household use, and for operation at high pressures, including two main co-operating parts forming a chamber, with a seal positioned between such parts, and a cap compressing the seal and holding the two parts together. The interior of the chamber can contain one or more filtering elements such as a particulate matter filter, a carbon filter or a reverse osmosis filter. To withstand high internal pressures without leakage or damage, mechanical connections are provided within the chamber to form a further positive connection between the two main parts forming the chamber, so as to maintain such filter elements in position within the chamber. A water purification system particularly suitable for household use is provided, incorporating the above unit, wherein tap water is fed to the unit and purified outlet product water is discharged and introduced drop by drop into an open container, affording an aerated storage reservoir of purified water ready for use, and including water overflow means from such container to an outlet drain, the waste water from the water purification unit being also discharged to such drain.

Growing community of inventors

San Clemente, CA, United States of America

Gerald A Guter