Consistently delivering exceptional performance

ESNA membranes by Hydranautics are designed using the latest technology and exhibit unparalleled performance at ultra-low pressures. Ideal for softening applications and removal of pesticides and pathogens, ESNA membranes provide 91%-99% salt rejection.

ESNA membranes also remove iron and TOC (Total Organic Carbon), while allowing passage of monovalent ions like sodium and chloride. This makes them the preferred choice for municipal potable water systems. Hydranautics advanced membrane technology and unique features of ESNA membranes help achieve significant savings in operation cost and energy. This makes them these membranes the preferred choice for municipal potable water systems.

ESNA1-LF-LD are high-performance nanofiltration membranes ideal for softening applications and removal of pesticides, bacteria and viruses. They provide 50%-90% salt rejection with ultra-low-pressure operations, increased energy savings, and significantly lower installation and operating costs.

They use patented Low Differential LDTM technology designed to minimize colloidal fouling.

ESNA1-LF-LD membranes use a patented 34 mil thickness feed spacer that prevents colloidal fouling and increases the effectiveness of membrane cleaning. As a result, the ESNA1-LF-LD membrane does not need to be cleaned frequently – thus reducing treatment cost – while offering extreme durability and consistent performance.

ESNA1-LF-LD membrane is globally acclaimed for high hardness rejection characteristics in softening applications. It significantly reduces operating costs and provides optimum hardness rejection in softening applications.

ESNA1-LF-LD membrane is available in 4-inch and 8-inch diameter sizes.

Product Name Size Download
ESNA1-LF-LD-4040 4″ diameter & 40″ length
ESNA1-LF-LD 8″ diameter & 40″ length

ESNA1-LF2-LD is a high flow nanofiltration membrane that provides superior Natural Organic Matter (NOM) rejection and moderate hardness rejection, operating at less than 100 psi pressures. Thus, the membrane offers savings in costs and energy.
ESNA1-LF2-LD use patented Low Differential LDTM technology designed to minimize colloidal fouling.

ESNA1-LF2-LD membranes use a patented 34 mil thickness feed spacer that prevents colloidal fouling and increases effectiveness of membrane cleaning. As a result, the ESNA1-LF2-LD membrane does not need to be cleaned frequently – thus reducing treatment cost – while offering extreme durability and consistent performance.

ESNA1-LF2-LD membrane is acclaimed for its high NOM and color rejection. It also significantly reduces operating costs.

ESNA1-LF2-LD membrane is available in 4-inch and 8-inch diameter sizes.

Product Name Size Download
ESNA1-LF2-LD-4040 4″ diameter & 40″ length
ESNA1-LF2-LD 8″ diameter & 40″ length

ESNA4-LD’s selective separation capability using nanofiltration technology can be used to deliver high quality permeate water while removing specific contaminants such as nitrates and larger organic compounds from waters with low salinity.

Given this capability of ESNA4-LD, it finds its application in treating groundwaters used by farming communities where there is a need to remove nitrates which contaminate the water due to the use of fertilizers.

ESNA4-LD also finds its use in the treatment of waters containing sulfates found in the wastewaters from the mining industry. Regulations governing sulfate concentrations have become more stringent as mine planners and operators are required to develop sulfate management in their water management plans with minimal impact on drinking water resources.

ESNA4-LD membrane is available in 8-inch diameter sizes.

Product Name Size Download
ESNA4-LD 8″ diameter and 40″ length