Membrane Chemicals

membrane chemicals

MBR Membrane Bioreactor Cleaning Chemical

CAS: N/A (blend)

Dual-component cleaning system for MBR hollow-fiber and flat-sheet membranes. The alkaline component (NaOH + NaOCl) removes biofouling and EPS deposits; the acidic component (citric acid solution) dissolves inorganic scale and struvite. Supports both in-situ maintenance cleaning and ex-situ recovery cleaning protocols.

membrane chemicals

Membrane Pre-Treatment Flocculant

Low-charge, low-residual cationic flocculant for RO/UF pretreatment. Minimizes membrane fouling from residual polymer while maximizing SDI reduction.

membrane chemicals

NF Membrane Antiscalant

Antiscalant specifically formulated for nanofiltration membranes with tighter pore structure. Effective against CaCO3 and organic fouling at lower operating pressures.

membrane chemicals

RO Antiscalant for Barium/Strontium Sulfate Scale

CAS: N/A (blend)

Specialty RO antiscalant formulated with high-efficacy threshold inhibitors and crystal modifiers to prevent BaSO₄ and SrSO₄ scale — the most difficult sulfate scales to control due to their extremely low solubility. Effective at LSI up to +2.5 and SDI <5 in brackish water RO systems.

membrane chemicals

RO Antiscalant for Fluoride-Rich Groundwater

CAS: N/A (blend)

Specialty antiscalant formulated to prevent CaF₂ and fluorapatite [Ca₅(PO₄)₃F] scale formation in RO and NF systems treating fluoride-rich groundwater (F⁻ 5–50 mg/L). Threshold inhibitors and dispersants prevent crystal nucleation on membrane surfaces at concentrations well above fluoride solubility limits in the concentrate stream.

membrane chemicals

RO Antiscalant — High Hardness Formula

RO antiscalant optimized for feedwater with calcium hardness > 500 ppm and LSI > 2.5. Strong CaCO3 and CaSO4 threshold inhibition at elevated recovery rates.

membrane chemicals

RO Antiscalant — High Silica Formula

Specialized RO antiscalant for feedwater with silica > 120 ppm. Prevents colloidal and reactive silica deposition on membrane surfaces at high recovery rates.

membrane chemicals

RO Membrane Biocide (DBNPA-Based)

DBNPA-based non-oxidizing biocide formulated for online dosing in RO systems. Fast-acting with rapid degradation — no membrane damage risk from residual biocide.

membrane chemicals

RO Membrane Cleaner — Acidic

Acidic membrane cleaner (pH 1.5–2.5) for dissolving inorganic scale deposits (CaCO3, CaSO4, iron oxide, metal hydroxides) from RO/NF membranes.

membrane chemicals

RO Membrane Cleaner — Alkaline

Alkaline membrane cleaner (pH 11–12) for removing organic fouling, biofilm and silica deposits from RO/NF membranes. Restores flux and rejection rates.

membrane chemicals

RO Membrane Preservative

Sodium bisulfite-based preservative solution for RO membranes during shutdown or storage. Prevents biological growth and oxidative damage during idle periods.

membrane chemicals

Seawater Desalination RO Antiscalant

CAS: N/A (blend)

Purpose-formulated antiscalant for seawater RO (SWRO) desalination systems operating at TDS 35,000–45,000 mg/L. Controls CaCO₃, CaSO₄, and Mg(OH)₂ scale under extreme ionic strength and high Mg²⁺/Ca²⁺ concentrations typical of seawater concentrate streams.

membrane chemicals

Sodium Bisulfite (RO Dechlorination Reducing Agent)

CAS: 7631-90-5

Sodium bisulfite is a fast-acting reducing agent used to neutralize free chlorine and chloramines in RO feedwater, protecting polyamide membranes from oxidative degradation. Dosed at 1–3 mg/L per 0.1 mg/L free Cl₂ to achieve ORP <200 mV before the RO lead element.

membrane chemicals

UF Membrane Cleaner

Combined alkaline-surfactant cleaner for UF/MF membrane systems. Removes organic fouling, colloids and biofouling from hollow-fiber and flat-sheet membranes.