Membrane — Process Challenge

RO-Membran-Reinigungschemikalien (CIP)

Fouling-Schichten bilden sich auf RO-Membranen und müssen durch Clean-in-Place entfernt werden: eine niedrig-pH-Stufe für Mineralablagerungen/Metalloxide und eine hoch-pH-Stufe mit Tensid/Chelatbildner für Organika und Biofilm, alles innerhalb der Polyamid-pH-Grenzen
Updated Jun 2026
Lösungsansatz

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Treatment Workflow
1
Water & System Assessment
Characterize the water and the system — hardness, alkalinity, pH, TDS/conductivity, microbial load, and the metallurgy and temperatures of the equipment being protected.
2
Program & Chemistry Selection
Match coagulants, flocculants, scale and corrosion inhibitors, biocides, or pH adjusters to the water profile and discharge limits, factoring compatibility with any existing program.
3
Jar Testing & Dosing
Confirm coagulant and flocculant dose and feed point by jar test, set inhibitor and biocide treat rates, and size packaging (drums, totes, bulk) to consumption.
4
Monitoring & Control
Track residuals, turbidity, ORP, corrosion coupons, and effluent compliance, adjusting chemistry and dose as feedwater and load change.
Recommended Chemistries (6)
Citric Acid (Anhydrous, FCC Food Grade)
CAS 77-92-9
Säuren & Salze
Biodegradable chelant
Weak acid + chelant low-pH CIP that dissolves CaCO3 and iron/metal-oxide fouling while staying within polyamide membrane pH limits
Schmelzpunkt:153 °C (anhydrous)   Siedepunkt:Decomposes   Dichte:1.54 at 20 °C
Schnellansicht
Alle Details
Hydrochloric Acid
CAS 7647-01-0
Säuren & Salze
pH-Einstellung
1789 (HYDROCHLORIC ACID, SOLUTION) · Class
Mineral acid to drop CIP pH for stubborn carbonate/metal scale where a stronger acid stage is needed
Schmelzpunkt:-115 °C (Melting point is -25 °C for a 39.17% w…   Siedepunkt:51 °C at 760 mmHg   Dichte:1.05 at 15 °C for 10.17% weight/weight solution
Schnellansicht
Alle Details
Caustic Soda (Sodium Hydroxide) Beads
CAS 1310-73-2
Säuren & Salze
Primäralkali zur pH-Erhöhung
1824 (SODIUM HYDROXIDE SOLUTION) · Class
Raises high-pH cleaning stage to hydrolyze and lift organic foulants and biofilm off the membrane
Schmelzpunkt:318 °C   Siedepunkt:> 130 °C at 760 mmHg   Dichte:1.5 at 20 °C
Schnellansicht
Alle Details
Sodium Metasilicate Pentahydrate
CAS 10213-79-3
Säuren & Salze
pH-Einstellung
Alkaline builder that buffers the high-pH stage and disperses lifted soils, keeping them from redepositing on the element
Schnellansicht
Alle Details
Sodium Lauryl Sulfate (SLS)
CAS 151-21-3
Tenside
Reinigung / Entfettung
Anionic surfactant that wets the membrane and emulsifies organic/oil fouling during the alkaline CIP stage
Schmelzpunkt:204–207 °C   Dichte:> 1.1 at 20 °C   Solubility: < 1 mg/mL at 19 °C
Schnellansicht
Alle Details
Tetrasodium EDTA (EDTA Na4)
CAS 64-02-8
Amine & Amide
Chelatisierung / Sequestrierung
Tetrasodium EDTA chelates Ca/Mg/Fe in the alkaline CIP to strip metal-oxide and biofilm-bound hardness; a standard alkaline-CIP chelant a buyer expects here.
Schmelzpunkt:300 °C (decomposes)   Dichte:6.9 lb/gal /Apparent density/   Solubility: Slightly soluble in ethanol
Schnellansicht
Alle Details

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