Hydranautics A Nitto Denko Company products

The energy required to pressurize RO feed water is the largest contributor to the total energy consumption of the RO plant. ESPA membranes are the choice for applications demanding high-energy efficiency, with uncompromised productivity and salt rejection. Operating at significantly lower pressures, ESPA elements produce high quality water in a range of water treatment applications, ensuring energy cost savings. ESPA membranes are used in the treatment of drinking water, industrial process waters, municipal and industrial waste water recovery and reuse because of this exception performance capability. These membranes also serve as part of polishing units in seawater desalination plants when boron rejection is critical.

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 50-90% 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.

NANO-BW are high performance nanofiltration membranes ideal for treatment of low salinity surface or ground waters containing high molecular weight organics or pesticides. They provide 50%-90% salt rejection with ultra-low-pressure operations, increased energy savings, and significantly lower installation and operating costs.

PRO-XR supplies the best combination of high rejection and high flow capability at low pressures, compared to all commercial low-pressure type RO elements. PRO-XR membranes are useful in industries where high-purity water is critical like power generation, electronics, semiconductor, pharmaceutical and food & beverage.

PRO-LF are spiral wound RO membranes which are neutrally charged and have a hydrophilic coating to minimize fouling while treating high salinity wastewaters. The resistance to fouling exhibited by PRO-LF membranes is an important feature in the treatment of industrial wastewaters from coal to chemical plants, mines, tanneries and textile factories.

PRO-XS are charged nanofiltration membranes with high ion selectivity which provide high rejection of bivalent cations and anions to selectively remove and concentrate the ions to produce industrial grade chemicals like Glauber’s salt, hardness free NaCl, Na₂CO₃ etc. The ability to separate salts in the brine helps to reduce the amount of mixed salt wastes going to landfill and the purified salts produced, can be recycled or sold at a profit. PRO-XS membranes are useful in industries where salt separation is critical like chlor alkali, textiles, electroplating and dye.

PRO-XP are ultra high-pressure RO membranes which can can treat high TDS feed water and concentrate it up to 120,000 ppm (12%) while operating at pressures up to 1,800 psi (12.4 MPa). In a ZLD system, the PRO-XP is applied upstream of evaporators, to reduce the CAPEX and OPEX of downstream thermal equipments. PRO-XP increases the overall efficiency of the treatment facility by reducing the cost of brine concentration and maximizing water recovery. PRO-XP membranes are useful in coal to chemicals, mining, power plants, textles and tanneries. The PRO-XP elements are currently in the final stage of their development and will be launched soon.

SWC4 are the highest salt rejecting membranes used to treat varying levels of seawater salinities and produce low TDS permeate. SWC4 is popularly used in the treatment of sea and highly brackish waters. SWC4 membranes are available in two different types of variants, LD and MAX. Low differential LD Technology^® models are offered to minimize colloidal fouling when used with conventional pre-treatment equipment. They offer consistently low feed pressures and highest duration between two successive cleanings. The MAX models have a 440 ft² (40.9 m²) active membrane surface area. They provide excellent performance with high TDS and boron removal from warm waters.

CPA2-4040 is a high rejection RO membrane, available in a diameter of 4 inches. Ultrapure water is essential in several industrial applications. CPA RO membranes are regarded as the industry standard for all critical high purity applications – from pharmaceutical to power industry.