If using only Nitrogen Sweep mode, then the nitrogen will saturate the water according to Henry’s Law.  However, if using a combo mode (N2 + vacuum) the N2 will be removed and there will be no addition of dissolved N2 to water at contactor effluent. In fact, under vacuum with the addition of N2 sweep gas (aka combo mode) both N2 and O2 are removed from the process water. The technology is based on the partial pressure of the gases in the water phase, Henry's Law, and the partial pressure of the N2 in the vacuum side. Since the N2 partial pressure on the vacuum side is small, and the vacuum deep, both N2 and O2 transfer from the water phase into the vacuum. The system performance (O2 removal) is enhanced significantly by the presence of the sweep gas (high purity N2 in this case). Additionally, the N2 sweep gas helps to keeps the water vapor that transfers into the gas phase from condensing and causing pump problems.