Membrane Chemicals
Protect your RO feedwater from scale, bacterial growth and fouling
build up on the membrane surface during operations. GE’s membrane chemicals can help keep
suspended solids, microorganisms, and mineral scale from fouling your membrane elements.
These deposits can cause loss in output and/or rejection levels and reduce total system

GE offers membrane anti-scalants, membrane cleaners, membrane biological control and
membrane pretreatment chemicals.

Membrane Anti-scalants
Eliminate scale and reduce fouling in your
membrane systems

RO systems creates salt concentrated water streams that
could produce scale or fouling, while “the narrow feedwater
channel found in your spiral wound and hollow fiber elements
accentuates scaling and fouling”. GE's membrane anti-scalants
are a pretreatment programs designed to eliminate scale and
reduce fouling in membrane systems, regardless of the
feedwater source.
Membrane Antiscalant Features

strontium sulfate, calcium fluoride, iron, colloidal material, silica, and other organic and inorganic
• Compatible with most leading RO membranes
• Products are NSF 60 certified
• Reduced need to handle sulfuric or hydrochloric acid
• Reduced cleaning and maintenance costs
• Lower operating cost
• RO systems operate at higher recovery rates due to reduced scale
Membrane Cleaners
Membrane cleaners for effective fouling & scaling
Successful membrane cleaning relies on both the effectiveness of
the cleaning compounds, their professional application and the
ensure effective results that will protect against irreversible
membrane fouling.
Membrane Cleaner Features
• Restores flux rates close to that of new membranes
• Prolongs membrane life
• Improves % recovery and % rejection rates
• Protects membranes from irreversible fouling
Membrane Biological Control
Reverse osmosis (RO) systems are favorable environments for
microorganisms to thrive. GE’s Biomate* products are non-
oxidizing biocides that are highly effective in reducing bacterial
growth and the build-up of slime on a variety of membrane types.

Biomate MBC products are EPA registered non-oxidizing biocide
for sanitizing RO and ultrafiltration (UF) systems and
membranes. Most effective as bactericides, they will also control
GE’s line of cleaners is formulated to function on all types of membrane systems, including food
and beverage systems and suitable for most of the scale and fouling materials.
fungi and algae when used at higher dosages. A treatment program using products from both
Biomate and Kleen™ will result in more effective membrane cleaning and decreased cleaning
While treatment with an ordinary antiscalant does provide some improvement, the use of GE’s
patented chemistry maximizes efficacy against a broad range of scale-forming substances and
keeps fouling material in suspension.
Membrane Biological Control Features
• Reduced unscheduled downtime and operating costs
• Increased efficiency
• Reliable production and supply
• Maximum water recovery (less wastewater) at highest permeate quality
• Extended membrane life
• Minimal chemical handling
• Effective sanitation of RO and other membrane water treatment systems
• Compatible with thin film polyamide, polysulfone, and PVDF membranes
• May be fed continuously, intermittently, or in an off-line clean-in-place mode
Membrane Pretreatment
Increase pre-filtration efficiency, remove chlorine
and control pH in your feedwater systems
with chlorine to retard microbiological growth. This chlorine,
however, can irreversibly damage many thin-film composite
membranes. GE DeChlor* DCL series is a membrane
pretreatment designed to remove free and combined chlorine
from reverse osmosis (RO) and ultrafiltration (UF) feedwaters.
In addition, filter-aid and pH control agents from GE can increase pre-filtration efficiency and
help improve productivity in membrane systems for worry-free RO feedwater. GE's solutions are
suitable for direct membrane filtration processes (UF/MF), multi-media filters and clarifiers.
Membrane Pretreatment Features
• Best chlorine reduction method and stoichiometric reactive
• Will not add organic material or carbon fines to the feedwater or to the RO or UF systems
• Helps maintain optimum feedwater conditions to and from your membrane system
• Restores and prolongs membrane life
• Maintains system performance
• Reduces down time
• Protects membranes from oxidizing agents
• Decreases particulate loading on RO systems
• Extends cartridge filter and membrane element life
• Effective over a wide pH range
• Minimizes backwash waste
• Increases resistance-to-filter breakthrough
• Improves overall operation of filtration systems and clarifier
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