Inclusion of a recycling loop for partially-desalted water from second-stage reverse-osmosis permeate has been shown useful for achieving high-recovery at moderate applied pressures. This approach has now been applied to simulated wash waters, to obtain data on retention by the membranes of solutes in a mixture comparable to anticipated spacecraft hygiene wastewaters, and to generate an estimate of the maximum concentration that can be expected without causing membrane fouling. A first experiment set provides selectivity information from a single membrane and an Igepon detergent, as a function of final concentration. A reject concentration of 3.1% Total Organic Carbon has been reached, at a pressure of 1.4 Mega Pascals, without membrane fouling. Further experiments have generated selectivity values for the recycle configuration from two washwater simulations, as a function of applied pump pressure. Reverse osmosis removal has also been tested for washwater containing detergent formulated for plant growth compatibility (containing nitrogen, phosphorous and potassium functional groups.)
Performance of high-recovery recycling reverse osmosis with wash water
SAE, International Conference on Environmental Systems ; 1993 ; Colorado Springs, CO, United States
1993-01-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
Performance of High-Recovery Recycling Reverse Osmosis with Wash Water
SAE Technical Papers | 1993
|Reverse osmosis for spacercraft wash water recycling high pressure pump definition
Tema Archiv | 1974
|Tema Archiv | 1990
|Shower Water Recovery by Reverse Osmosis
SAE Technical Papers | 1987
|