Membrane — Process Challenge

RO膜洗浄薬剤(CIP)

RO膜に付着した汚染物質は、クリーンインプレイスで除去する必要がある:低pH段階で無機スケール・金属酸化物を、高pH段階で界面活性剤・キレート剤配合液で有機物・バイオフィルムを、いずれもポリアミドの許容pH範囲内で洗浄する
Updated Jun 2026
ソリューションアプローチ

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
酸・塩類
Biodegradable chelant
Weak acid + chelant low-pH CIP that dissolves CaCO3 and iron/metal-oxide fouling while staying within polyamide membrane pH limits
融点:153 °C (anhydrous)   沸点:Decomposes   密度:1.54 at 20 °C
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Hydrochloric Acid
CAS 7647-01-0
酸・塩類
pH調整
1789 (HYDROCHLORIC ACID, SOLUTION) · Class
Mineral acid to drop CIP pH for stubborn carbonate/metal scale where a stronger acid stage is needed
融点:-115 °C (Melting point is -25 °C for a 39.17% w…   沸点:51 °C at 760 mmHg   密度:1.05 at 15 °C for 10.17% weight/weight solution
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Caustic Soda (Sodium Hydroxide) Beads
CAS 1310-73-2
酸・塩類
pH上昇用の主要アルカリ剤
1824 (SODIUM HYDROXIDE SOLUTION) · Class
Raises high-pH cleaning stage to hydrolyze and lift organic foulants and biofilm off the membrane
融点:318 °C   沸点:> 130 °C at 760 mmHg   密度:1.5 at 20 °C
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Sodium Metasilicate Pentahydrate
CAS 10213-79-3
酸・塩類
pH調整
Alkaline builder that buffers the high-pH stage and disperses lifted soils, keeping them from redepositing on the element
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Sodium Lauryl Sulfate (SLS)
CAS 151-21-3
界面活性剤
洗浄 / 脱脂
Anionic surfactant that wets the membrane and emulsifies organic/oil fouling during the alkaline CIP stage
融点:204–207 °C   密度:> 1.1 at 20 °C   Solubility: < 1 mg/mL at 19 °C
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Tetrasodium EDTA (EDTA Na4)
CAS 64-02-8
アミン・アミド類
キレート化 / 金属イオン封鎖
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.
融点:300 °C (decomposes)   密度:6.9 lb/gal /Apparent density/   Solubility: Slightly soluble in ethanol
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