Highly selective for phosphate and arsenate anions in neutral to slightly alkaline conditions.
Stable polyacrylate matrix offering excellent chemical resistance to oxidants and high pH environments.
Low operating pressure drop due to uniform spherical bead structure and optimized particle size distribution.
Regenerable with sodium chloride or sodium hydroxide, enabling sustainable long-term operation.
Low leachable organics content, meeting stringent requirements for potable water and pharmaceutical-grade effluent polishing.
Phosphate removal from municipal and industrial wastewater prior to discharge or reuse.
Polishing of surface water and groundwater for drinking water production where phosphate or arsenic compliance is critical.
Treatment of cooling tower blowdown to prevent scale formation and meet environmental phosphorus limits.
Pre-treatment for reverse osmosis systems to protect membranes from fouling by multivalent anions.
End-of-pipe remediation in semiconductor manufacturing rinse water streams.
| Chemical Type | Strong-base anion exchange resin (Type I, polyacrylate matrix) |
| Product Form | Moist, spherical beads |
| Appearance | Off-white to light yellow, uniform granules |
| Functional Group | Quaternary ammonium (–N(CH₃)₃⁺) |
| Ion Form | Chloride form (Cl⁻) |
| Particle Size Range | 0.3 – 1.2 mm |
| Moisture Content | 45 – 55 % (w/w) |
| pH Stability Range | 0 – 14 (short-term exposure up to pH 14) |
Q1: What is the primary functional group and ion exchange mechanism of LEWATIT PH 2061?
A: LEWATIT PH 2061 is a strongly acidic cation exchange resin based on a sulfonated polystyrene-divinylbenzene matrix. It operates via reversible H⁺/Na⁺ (or other cation) exchange, making it especially effective for demineralization, softening, and selective cation removal in aqueous process streams.
Q2: Is LEWATIT PH 2061 suitable for food-grade or pharmaceutical water purification applications?
A: Yes — LEWATIT PH 2061 is manufactured and tested to meet relevant global regulatory expectations for use in purified water systems, including those supporting pharmaceutical manufacturing and beverage production. Users must validate compliance with their specific local regulatory requirements and system validation protocols.
Q3: How does LEWATIT PH 2061 differ from standard gel-type strong acid cation resins in terms of physical structure and performance?
A: Unlike conventional gel-type resins, LEWATIT PH 2061 features a macroporous structure that provides enhanced mechanical stability, superior resistance to fouling by organic matter, and more consistent performance under variable feedwater conditions — particularly beneficial in challenging industrial or pretreated wastewater applications.
Q4: What are typical regeneration requirements for LEWATIT PH 2061 in continuous service?
A: Regeneration is typically performed using dilute mineral acids such as hydrochloric or sulfuric acid. The required acid dosage and concentration depend on service cycle length, influent ion load, and desired effluent quality — but generally follow standard strong acid cation resin practices with attention to flow distribution and rinse efficiency.
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