ESPA1, ESPA2 and ESPA4 high-efficiency polyamide Hydranautics membranes

ESPA1 membrane has the same chemical composition as ESPA2 membrane, but has a higher permeability. Due to its high efficiency, the ESPA1 membrane requires even lower feed pressures than the ESPA2, which translates into lower energy consumption.

The ESPA1 membrane is very popular in the treatment of low TDS water to produce high quality drinking water. Thanks to its high permeability, the ESPA1 membrane is capable of producing drinking water efficiently and cost-effectively.

The ESPA1 membrane is available in 4.0 and 8.0 inch diameters. The 4.0-inch diameter membrane is available in Low Differential LD™ technology. This technology allows for greater control of water flow and greater energy efficiency. See the ESPA2-LD membrane page for more information on LD features and benefits.

ESPA1 Membrane Data Sheets

Model ESPA1-LD-4040: Download

Model ESPA1: Download

ESPA2 membranes are the ideal solution when optimum salt rejection and permeate flux are required. These membranes are chosen when lower permeate TDS and lower feed pressures are required. ESPA2 membranes offer the highest energy efficiency at the lowest costs and are used in large municipal wastewater treatment plants.

ESPAB membranes are low pressure brackish water membranes that have a high rejection for boron.

The ESPA2-LD membrane is available in 4.0 and 8.0 inch diameters. ESPA2 membranes are available in the LD variant. LD® low differential technology models are offered to minimize colloidal clogging when used with conventional pretreatment equipment. These membranes offer consistently low feed pressures and longer intervals between cleanings.

ESPA2 and ESPAB membranes are available in the MAX variant with an active membrane surface area of 440 square feet (40.9 m2). An increased membrane area reduces capital costs by requiring fewer pressure vessels and less floor space.

Innovations have enabled us to offer ESPA2-LD MAX membranes that have a membrane area of 440 square feet (40.9 m2) and use a 34 mil feed spacer. These membranes are ideal for water treatment applications requiring high efficiency and low cost.

ESPA2 and ESPAB membranes are ideal for the treatment of municipal and brackish wastewater, respectively. The LD variant of the ESPA2 membrane offers higher energy efficiency and less colloidal clogging, while the MAX variant offers a larger active membrane area and reduced capital costs. Take advantage of advanced membrane technology and improve your SEO with environmentally friendly solutions!

ESPA2 Membrane Data Sheets

Model ESPA2-LD-4040: Download
Model ESPA2-LD: Download
ESPAB MAX Model: Download
Model ESPA2 MAX: Download
Model ESPA2-LD MAX: Download

ESPA4 are membranes that offer low energy consumption. ESPA4 membranes require ultra-low pressures without compromising high salt rejection and are commonly used in the second stage of a reverse osmosis system.

ESPA4 membranes are available in LD variant. LD® low differential technology models are offered to minimize colloidal clogging when used with conventional pretreatment equipment. These membranes offer consistently low feed pressures and longer intervals between cleanings.

ESPA4-LD HP are high flow membranes that offer low energy consumption without compromising high rejection. These membranes have an active membrane area of 400 square feet (37.2 m2), a 34 mil brine spacer and a high pressure construction to operate up to 1200 psi (8.27 MPa) to allow for higher feed solution concentration.

ESPA4 membranes are available in the MAX variant with an active membrane surface area of 440 square feet (40.9 m2). An increased membrane area reduces capital costs by requiring fewer pressure vessels and less floor space.

ESPA4 membranes are the ideal solution for applications requiring high efficiency and low energy consumption. The LD variant of the ESPA4 membrane offers higher energy efficiency and less colloidal clogging, while the MAX variant offers a larger active membrane area and reduced capital costs.