Accession Number : ADA241527


Title :   Evaluation of Military Field-Water Quality. Volume 8. Performance of Mobile Water-Purification Unit (MWPU) and Pretreatment Components of the 600-GPH Reverse Osmosis Water Purification Unit (ROWPU), and Consideration of Reverse Osmosis (RO) Bypass, Potable-Water Disinfection, and Water-Quality Analysis Techniques


Descriptive Note : Final rept. Nov 1986-May 1990


Corporate Author : LAWRENCE LIVERMORE NATIONAL LAB CA ENVIRONMENTAL SCIENCES DIV


Personal Author(s) : Selleck, R E ; Ungun, Z ; Chesler, G ; Diyamandoglu, V ; Daniels, J I


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a241527.pdf


Report Date : May 1990


Pagination or Media Count : 129


Abstract : A comparison is made between the performances of the 600-gph Reverse Osmosis Water Purification Unit (ROWPU) operated in the bypass mode and the Mobile Water Purification Unit (MWPU). Generally, the performance of the MWPU is significantly better than the pretreatment units of the ROWPU in terms of removing both turbidity and pathogenic organisms. It is recommended that the practice of bypassing the reverse osmosis (RO) components of the ROWPU be avoided unless it can be demonstrated clearly that the cartridge filters will remove the cysts of infectious organisms effectively and reliably. If the ROWPU must be operated in the bypass mode, it is recommended that the dose of disinfectant used be made equal to that currently employed in the field for untreated raw water. The analytical methods used to determine total dissolved solids (TDS) and residual free chlorine with the new Water-Quality Monitor (WQM) are also reviewed briefly. The limitations of the methods used to calibrate the TDS and free-chlorine probes of the new WQM are discussed.


Descriptors :   *REMOVAL , WATER , SOLIDS , REVERSE OSMOSIS , WATER TREATMENT , PURIFICATION , RESIDUALS , MOBILE , DOSAGE , FILTERS , INFECTIOUS DISEASES , DISSOLVING , PATHOGENIC MICROORGANISMS , CHLORINE , GERMICIDES , CARTRIDGES , TURBIDITY , CYSTS


Subject Categories : Logistics, Military Facilities and Supplies
      Water Pollution and Control


Distribution Statement : APPROVED FOR PUBLIC RELEASE