Patent ID: 8277627
Filing Date: 2012-10-02
Classification: B01D,C02F,Y02A

Abstract:
1. A method comprising: introducing water to be treated comprising at least one of seawater and brackish water into an electrically-driven separation apparatus to provide irrigation water having a sodium adsorption ratio (SAR) value of less than about 20; passing at least one monovalent cationic species in the water to be treated through at least one monovalent cation selective membrane having a effective selectivity of at least about 1.5 in the electrically-driven separation apparatus; and irrigating at least a portion of an agricultural facility with the irrigation water, wherein the SAR value is determined according to the formula, wherein [Na] is the sodium species concentration, in mol/m wherein [Ca] is the calcium species concentration, in mol/m wherein [Mg] is the magnesium species concentration, in mol/m