Reverse Osmosis – Water Packaging Module (RO/WP Module)
MDD is developing the Reverse Osmosis-Water Packaging (RO/WP) Module under a Navy Small Business Innovative Research (SBIR) technology development program (N06-135 Potable Water Production Module). The RO/WP Module was developed to meet US Navy shipboard, US Marine Corps expeditionary, and non-military applications. The primary RO/WP Module application is to support the USMC in an inland, forward deployed operational situation. The present RO/WP Module technology development program is a Phase II SBIR effort.
Discussions with the USMC Ground Transportation & Engineering Systems Group have established the need for a new, mobile, potable water production and packaging unit. The RO/WP Module will fill operational gaps with the USMC, to support Forward Operating Bases (primary need), as well as possible pierside and shipboard needs (secondary needs). The RO/WP Module may also be deployed in roles other than military, such as in disaster relief and humanitarian situations. The following are preliminary requirements and objectives to meet the stated operational goals. To meet these goals in a cost effective manner, the RO/WP Module program has a baseline system development effort with extended optional enhanced system capability.
RO/WP Module capabilities and design features include operation as a single, integrated unit, with RO, WP, and electrical power supply sub-systems installed in a TRICON military container, with a total Module weight of less than 14,900 lbs. The Module’s RO capabilities include production of potable water meeting all TB-MED-577 drinking water requirements with the following operational characteristics:
a. Total Dissolved Solids (TDS): 25,000 to 60,000 ppm
b. Maximum Silt Density Index (SDI): 6.7
c. Maximum turbidity: 150 NTU
d. High density suspended solids: 20 ppm (nominal)
e. Low density suspended solids: 30 ppm (nominal)
f. pH range: 7.0 – 8.4
g. Temperature range: 34°F – 95°F
The Module’s RO sub-system operates at a minimum flow rate of 75 gallons per hour (gph) using brackish/seawater source feedwater and with a flow rate of 125 using freshwater (< 500 ppm TDS) source feedwater.
The Module’s WP Sub-System produces containers with a flexible, 1 liter bag design with a minimum shelf life of 30 days, both a tear-open corner and a drinking tube port, and can survive a 10′ vertical drop onto a flat surface without rupturing. The packages are ideally suited as sterile, NBC-equipment compatible disposable replacement bladders for the USMC Personal Hydration System. The Module is capable of concurrent packaging of the maximum potable water flow rate of the RO system, and each container will have a production date stamp attached for quality control tracking purposes.
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