Recent Developments in Water Quality Monitoring for Space Station Reclaimed Wastewaters 871447
This paper discusses the recent developments in water quality monitoring for Space Station reclaimed wastewaters. A preprototype unit that contains an ultraviolet absorbance organic carbon monitor integrated with pH and conductivity sensors is presented. The preprototype has provisions for automated operation and is a reagentless flow-through system without any gas/liquid interfaces. The organic carbon monitor detects by ultraviolet absorbance the organic impurities in reclaimed wastewater which may be correlated to the organic carbon content of the water. A comparison of the preprototype organic carbon detection values with actual total organic carbon measurements is presented. The electrolyte double junction concept for the pH sensor and fixed electrodes for both the pH and conductivity sensors are discussed. In addition, the development of a reagentless organic carbon analyzer that incorporates ultraviolet oxidation and infrared detection is presented. Detection sensitivities, hardware development, and operation are included.
Citation: Small, J., Verostko, C., Linton, A., and Burchett, R., "Recent Developments in Water Quality Monitoring for Space Station Reclaimed Wastewaters," SAE Technical Paper 871447, 1987, https://doi.org/10.4271/871447. Download Citation
Author(s):
John W. Small, Charles E. Verostko, Arthur T. Linton, Ray Burchett
Pages: 10
Event:
Intersociety Conference on Environmental Systems
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1987 Transactions: Aerospace-V96-6
Related Topics:
Spacecraft
Water quality
Water pollution
Conductivity
Corrosion
Electrolytes
Gases
Sensors and actuators
Water
Hardware
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