Multi-column continuous resin regeneration system

A continuous resin regeneration system for use in cleaning a water stream from a contaminated water reservoir, comprising:

• a contaminated water reservoir;
• a first anion exchange resin set having a first anion exchange resin column and a second anion exchange resin column connected in parallel with the first anion exchange resin column, said first anion exchange resin column and said second anion exchange resin column of said first anion exchange resin set containing an anion exchange resin;
• a first cation exchange resin set having a first cation exchange resin column and a second cation exchange resin column connected in parallel with the first cation exchange resin column, said first cation exchange resin column and said second cation exchange resin column of said first cation exchange resin set containing a cation exchange resin;
• a first three-way control valve positioned in the water stream between the contaminated water reservoir and an upstream side of the first anion exchange resin set to alternately direct the water stream to said first anion exchange resin column of said first anion exchange resin set or to said second anion exchange resin column of said first anion exchange resin set;
• a second three-way control valve with positioned in the water
• stream adjacent a downstream side of the first anion exchange resin set to alternately direct the water stream from said first anion exchange resin column of said first anion exchange resin set toward the first cation exchange resin set or said second anion exchange resin column of said first anion exchange resin set toward the first cation exchange resin set;
• a third three-way control valve positioned in the water stream adjacently upstream of an upstream side of the first cation exchange resin set to alternately direct the water stream from the second three-way control valve to said first cation exchange resin column of said first cation exchange resin set or to said second cation exchange resin column of said first cation exchange resin set:
• a fourth three-way control valve positioned in the water stream adjacent a downstream side of the first cation exchange resin set to alternately direct the water stream from said first cation exchange column of said first cation resin set toward a downstream location or from said second cation exchange column of said first cation resin set toward a downstream location;
• a first sensor positioned in the water stream between the contaminated water reservoir and the first three-way control valve for sensing a condition of the water stream flowing from the contaminated water reservoir;
• a second sensor positioned in the water stream between the second three-way control valve and the third three-way control valve for sensing a condition of the water stream treated by one of the first anion exchange resin column and the second anion resin column:
• a third sensor positioned in the contaminated water stream adjacent a downstream side of the fourth three-way control valve for sensing a condition of the contaminated water stream treated by one of the first cation exchange resin column and the second cation exchange resin column;
• and
• a controller in data communication with said first sensor said second sensor and said third sensor, said controller configured to determine if a capacity for removing anions of said anion exchange resin associated with said first anion exchange resin column of said first anion exchange resin set is greater than a predetermined parameter and, if so, to actuate said first three-way control valve and said second three-way control valve to direct the water stream into said first anion exchange resin column of said first anion exchange resin set and, if not, to direct the water stream into said second anion exchange resin column of said first anion exchange resin set.