Khemical Diamite Membrane Cleaners
About this product
Khemical Diamite membrane cleaners are professional liquid clean-in-place (CIP) chemicals for reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF) membrane systems, supplied in 5-gallon containers. The line provides low-pH, silica-targeted, and high-pH formulations covering the full spectrum of scale and fouling encountered in membrane operation. Liquid formulations dissolve directly into the cleaning solution, eliminating the dust handling and incomplete dissolution associated with powder cleaners. The cleaner line is NSF/ANSI 60 certified for use in drinking-water treatment facilities.
Definitions
- Scale — crystalline mineral deposits (for example calcium carbonate or calcium sulfate) that precipitate onto the membrane surface as feed water is concentrated.
- Fouling — accumulation of organic matter, microorganisms, or colloidal particles that reduces membrane flux.
- Antiscalant — a chemistry that dissolves or inhibits mineral scale.
- Dispersant — a chemistry that suspends loosened foulant particles so they can be flushed from the system.
- Flux — the rate of permeate (treated water) production through the membrane.
Formulations
| Product | Class | Target Deposits | Typical Solution Character | Size |
|---|---|---|---|---|
| Low pH Membrane Cleaner | Antiscalant / Antifoulant, broad spectrum | Inorganic mineral scale: calcium carbonate, calcium sulfate, metal hydroxides, hardness scale | Acidic (low pH) | 5-Gallon |
| Silica Membrane Cleaner | Antiscalant / Dispersant / Antifoulant | Silica scale and colloidal silica, which are resistant to standard cleaning and dependent on pH and temperature | Targeted | 5-Gallon |
| High pH Membrane Cleaner | Dispersant / Antifoulant | Organic matter, biological fouling, and colloidal/particulate foulants | Alkaline (high pH) | 5-Gallon |
Functional Mechanism
Low-pH (acid) cleaners dissolve inorganic mineral scale and metal-based deposits by chemical attack on the crystalline structure. High-pH (alkaline) cleaners hydrolyze and disperse organic, biological, and colloidal foulants. Silica fouling, which neither acid nor standard alkaline cleaning fully addresses, is removed by the dedicated silica formulation. Because residual scale or foulant acts as a nucleation site that accelerates re-fouling, complete removal with the correct chemistry extends the interval between cleanings and prolongs membrane life.
Application Protocol
- Cleaning trigger: clean each RO train when normalized productivity has declined approximately 15% from clean baseline operation, or when differential pressure or salt passage indicates fouling.
- Solution preparation: prepare as a 1:40 ratio of neat cleaner to finished cleaning solution by filling the CIP tank with the required volume of permeate or deionized (DI) water, then adding chemical while mixing or circulating.
- Residual water accounting: if the system is not drained after flushing, assume approximately 4 gallons of water remain in each 8-inch by 40-inch membrane element and 1 gallon in each 4-inch by 40-inch element.
- Sequence: perform a thorough low-pressure system flush before cleaning; where both scale and organic/silica fouling are present, the low-pH (acid) clean precedes the high-pH or silica clean. Rinse completely between cleaners.
- Documentation: monitor and record solution pH during each step to fine-tune soak and circulation times, which vary with the degree of fouling.
Compliance
NSF/ANSI 60 certified for use in drinking-water treatment applications.
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NKH370 Khemical Diamite Low pH Membrane Cleaner - Antiscalant/Antifoulant - Broad Spectrum - 5-Gallon
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NKH371 Khemical Diamite Silica Membrane Cleaner - Antiscalant/Dispersant/Antifoulant - 5-Gallon
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NKH372 Khemical Diamite High pH Membrane Cleaner - Dispersant/Antifoulant - 5-Gallon
Details
Khemical Diamite membrane cleaners are professional liquid clean-in-place (CIP) chemicals for reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF) membrane systems, supplied in 5-gallon containers. The line provides low-pH, silica-targeted, and high-pH formulations covering the full spectrum of scale and fouling encountered in membrane operation. Liquid formulations dissolve directly into the cleaning solution, eliminating the dust handling and incomplete dissolution associated with powder cleaners. The cleaner line is NSF/ANSI 60 certified for use in drinking-water treatment facilities.
Definitions
- Scale — crystalline mineral deposits (for example calcium carbonate or calcium sulfate) that precipitate onto the membrane surface as feed water is concentrated.
- Fouling — accumulation of organic matter, microorganisms, or colloidal particles that reduces membrane flux.
- Antiscalant — a chemistry that dissolves or inhibits mineral scale.
- Dispersant — a chemistry that suspends loosened foulant particles so they can be flushed from the system.
- Flux — the rate of permeate (treated water) production through the membrane.
Formulations
| Product | Class | Target Deposits | Typical Solution Character | Size |
|---|---|---|---|---|
| Low pH Membrane Cleaner | Antiscalant / Antifoulant, broad spectrum | Inorganic mineral scale: calcium carbonate, calcium sulfate, metal hydroxides, hardness scale | Acidic (low pH) | 5-Gallon |
| Silica Membrane Cleaner | Antiscalant / Dispersant / Antifoulant | Silica scale and colloidal silica, which are resistant to standard cleaning and dependent on pH and temperature | Targeted | 5-Gallon |
| High pH Membrane Cleaner | Dispersant / Antifoulant | Organic matter, biological fouling, and colloidal/particulate foulants | Alkaline (high pH) | 5-Gallon |
Functional Mechanism
Low-pH (acid) cleaners dissolve inorganic mineral scale and metal-based deposits by chemical attack on the crystalline structure. High-pH (alkaline) cleaners hydrolyze and disperse organic, biological, and colloidal foulants. Silica fouling, which neither acid nor standard alkaline cleaning fully addresses, is removed by the dedicated silica formulation. Because residual scale or foulant acts as a nucleation site that accelerates re-fouling, complete removal with the correct chemistry extends the interval between cleanings and prolongs membrane life.
Application Protocol
- Cleaning trigger: clean each RO train when normalized productivity has declined approximately 15% from clean baseline operation, or when differential pressure or salt passage indicates fouling.
- Solution preparation: prepare as a 1:40 ratio of neat cleaner to finished cleaning solution by filling the CIP tank with the required volume of permeate or deionized (DI) water, then adding chemical while mixing or circulating.
- Residual water accounting: if the system is not drained after flushing, assume approximately 4 gallons of water remain in each 8-inch by 40-inch membrane element and 1 gallon in each 4-inch by 40-inch element.
- Sequence: perform a thorough low-pressure system flush before cleaning; where both scale and organic/silica fouling are present, the low-pH (acid) clean precedes the high-pH or silica clean. Rinse completely between cleaners.
- Documentation: monitor and record solution pH during each step to fine-tune soak and circulation times, which vary with the degree of fouling.
Compliance
NSF/ANSI 60 certified for use in drinking-water treatment applications.