AK-400 H

Summary

Product Overview

Veolia offers a comprehensive portfolio of spiral wound reverse osmosis (RO) and nanofiltration (NF) elements specifically designed for drinking water applications worldwide. These elements address diverse priorities, including the removal of pollutants and micropollutants (such as nitrate and emerging contaminants like per- and polyfluoroalkyl substances or PFAS), and optimizing energy consumption. The AK H Series elements are part of Veolia's ultra-low energy range, known for delivering high-quality water with reduced pressure and energy demand, which contributes to lower operating costs and extended element lifetimes.

Product Identification

This document primarily describes the Veolia AK H Series, which are ultra-low energy and high rejection reverse osmosis elements. Key models in this series include:

• AK-400 H
• AK-440 H

Operating Limits (AK H Series Testing)

The performance specifications for the AK H Series are derived from testing under the following conditions:

• Feed Solution: 500 ppm NaCl
• Operating Pressure: 115 psi (793 kPa)
• Temperature: 77°F (25°C)
• pH: 7
• Recovery: 15%

Feed Water

The membrane used in the AK H Series features a very hydrophilic surface, engineered to combat fouling by reducing the adsorption of organics and thereby minimizing cleaning frequency. Additionally, the elements incorporate an optimized 34 mil feed spacer designed to improve pressure drop and provide enhanced fouling resistance. The AK H Series is intended for applications requiring high rejection of salts, micropollutants, and low molecular weight organics.

Product Water

Performance Specifications (AK H Series)

• AK-400 H
  • Average permeate flow: 11,000 gpd (41.6 m³/day)
  • Typical NaCl rejection: 99.65%
  • Minimum NaCl rejection: 99.50%
• AK-440 H
  • Average permeate flow: 12,000 gpd (45.4 m³/day)
  • Typical NaCl rejection: 99.65%
  • Minimum NaCl rejection: 99.50%

Measured Rejection of Contaminants and Micropollutants (AK H Series)

The AK H Series membranes have demonstrated excellent rejection rates for various contaminants and micropollutants:

• Nitrate: 97.0%
• 1,4-dioxane: 95.8%
• Gen X: 97.3%
• Iomeprol: 98.7%
• Acesulfam: 90.4%
• Carbamazepine: 99.3%
• Mecoprop: 99.0%
• Diclofenac: 99.6%
• Ibuprofen: 99.6%

Note: Test conditions for these micropollutants varied. Some were tested with 500 ppm NaCl solution at 115 psi (793 kPa) operating pressure, 77°F (25°C), pH 7, and 15% recovery, along with specific contaminant concentrations (e.g., 200 mg/L NO₃⁻ and 5 µg/L of various organics). Gen X and 1,4-dioxane were tested at approximately 25°C, 95 psi (660 kPa), feed conductivity 125 µS/cm, and 92% recovery, with concentrations of 0.2 ng/L 1,4-dioxane and < 5 ng/L Gen X.

Mechanical / Hydraulic

The AK H Series membranes feature:

• Active area: 400 square feet
• Feed spacer: Optimized 34 mil

Other Veolia Brackish Water RO Elements

Veolia offers additional brackish water RO elements to suit various application needs:

• AG H Series: Characterized by the highest typical and minimum rejection among Veolia's brackish water RO products, designed for cleaner RO feed water.
• AG FR H Series: Optimized for fouling resistance, suitable for water sources with higher fouling potential, while maintaining high rejection.
• AG LE H Series: Developed to provide intermediate energy savings between the AG H/AG FR H Series and the ultra-low energy AK H Series, ideal when energy efficiency is a key consideration but water source fouling potential necessitates lower flux.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions present in the complete OEM PDF datasheet. For contractual data and full product specifications, please refer to the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet