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Chemicals

Persalt is not only a membrane supplier, but also a chemical supplier, offering a complete line of specialty chemicals for membrane plants.

This is a great advantage for RO water treatment system users, as besides having full technical support in both technologies, they can buy from the same company membranes and chemicals, to operate their plants successfully.

We have selected the most important and efficient products in the market for our customers.

Our manufacturers provide to Persalt effective and certified chemicals, to treat RO/NF/UF feedwaters preventing scale, biological growth and foulants on membrane surface during operation.

Using our dosing program PerDose, we can recommend the best dosage rate of our special and high-tech antiscalant PerScale for customer’s systems.

Basic RO/NF/UF principles, say systems must be cleaned, when normalized data show one of the following events, increasing 10%: DP per stage, feed pressure or salt passage.

Conventional chemicals most times cannot recover system start up conditions after cleanings, besides being aggressive to the membrane thin film composite.

Persalt’s PerClean series, liquid and powder, are buffered and high performance chemical cleaners, specially formulated for reducing operational costs, increasing membrane longevity and improving plant operation.

Cleaning and sanitization procedures, are part of the services and recommendations we offer to our customers, which allow a stable, and economical plant operation.

PerChlor ™ - Removes free and combined chlorine from RO/NF/UF feedwaters.

PerChlor is dosed continuously, as chlorine is present in feedwaters to retard microbiological growth. Chlorine needs to be removed to avoid irreversible membrane thin film damage, and element replacement.

Features

Avoids membrane damage by free and combined chlorine

Extends membrane life

Maintains stable permeate conductivity

PerBac ™ – Is a non-oxidizing sanitizer used to control biological growth, avoiding biofouling formation on the membrane surface, and feed spacers.

PerBac is a highly efficient product, sanitizing RO/NF/UF plants, increasing system run times. Associated with Persalt’s cleaners, PerClean series, reduces operational costs, improving cleaning performance, and prolonging membrane life. Our sanitizer can be applied in shock dosing and in CIP – Clean-In-Place systems.

Features

Controls biological growth

Prolongs membrane life

Improves cleaning performance

Reduces system downtimes

Compatible with polyamide, polysulfone and PVDF membrane thin films

PerScale ™ - RO/NF feedwaters create scaling and fouling potential due to the salt concentration process, caused by increasing recovery rates. 75% permeate recovery of a RO system is equivalent to 4 CD (Concentration Degree), meaning reject stream concentration is 4 times feedwater concentration. High Concentration Degrees can cause scaling and membrane fouling.

PerScale is a high-tech green antiscalant and dispersant, designed to inhibit scale formation, handling high levels of sulfate, carbonate and silica, while reducing membrane foulants.

PerDose software provides optimal dosage of PerScale R, diluted liquid product, ready for being dosed, while customers can buy the concentrated version, PerScale 10C. It is liquid product, 10 times concentrated, reducing storage requirements and shipping costs

Features

NSF 60 and ANSI Certifications

Phosphate free formulation

Lowers operational costs

Compatible with most leading membranes

Reduces cleaning frequency

Available in concentrated version

Prolongs membrane life

Powder Cleaners

PerClean ACP ™ – Is an acid powder (ACP) buffered cleaner, with chelants and solubilizing agents, specially formulated to remove scales, and metal foulants from membrane surface.

PerClean ACP is used for aggressive cleanings, removing carbonates, sulfates, metal hydroxides and calcium phosphates from membrane elements. It decreases membrane salt passage, when performed after alkaline cleaners, such as PerClean BAP or PerClean OFL.

Features

Phosphate free formula

Restores membrane projected salt passage

Dissolves easily to form a liquid solution

Extends membrane longevity

 

PerClean BAP ™ – Is a special basic powder (BAP) product, with high pH, efficiently used in the removal of organic materials, biological, and particulate deposits, from the membranes and spacers.

PerClean BAP is a high pH buffered cleaner formulated with complexing agents, and designed for aggressive cleanings, without damaging membrane thin film composite.

Features

Prolongs membrane life

Restores feed pressure and delta P close to initial plant start up

Improves permeate water quality and % recovery

Protects membranes from irreversible silica fouling

Mixes easily to form a liquid mixture

 

PerClean SIP ™ – Is a low pH powder cleaner for silica removal (SIP). Silica is one of the most difficult scales to be removed from the membranes, causing element irreversible fouling.

PerClean SIP is buffered and helps to remove inorganics.

Features

Highly effective for silica scale removal

Reduces element DP caused by silica scale

Increases membrane life

Mixes easily to form a liquid mixture

Protects membranes from irreversible silica fouling

 

Liquid Cleaners

PerClean SCL ™ – Most RO/NF/UF systems need less aggressive cleanings, PerClean SCL is a low pH liquid cleaner for scale removal (SCL), being effective for carbonates, sulfates, metal hydroxides and calcium phosphates scaling.

This buffered product, with chelants and special agents, helps decreasing the membrane salt passage, when performed after alkaline cleaners such as PerClean BAP or Perlean OFL.

Features

Phosphate free formula

Restores membrane projected salt passage

Prolongs membrane life

Removes iron and aluminum oxides

 

PerClean OFL ™ - Is a special alkaline liquid cleaner for organic fouling removal (OFL) from the membranes. Besides organics, this buffered cleaner removes particulate materials, colloids, biologicals and other impurities from membrane and spacers.

PerClean OFL is formulated with surfactants, chelants and dispersant agents, providing excellent results for less aggressive cleanings.

Features

Extends membrane life

Restores feed pressure and delta P close to initial plant start up

Improves permeate water quality and % recovery

Protects membranes from irreversible fouling

 

PerClean SIL ™ – Silica is one of the most difficult scales to be removed from the membranes, causing element irreversible fouling.

PerClean SIL is a low pH liquid cleaner (SIL) designed specially for silica and inorganic scales removal.

Features

Buffered product

Highly effective for silica scale removal

Reduces element DP caused by silica scale

Increases membrane life

 

PerStor L ™ – Is a preservative non-oxidizing liquid product, for long and short term storage, during RO/NF/UF system shutdown.

PerStor L helps to minimize biological growth, due to its biostatic property, without damaging membrane thin film composite.

Features

Protects membrane from biological growth

Non-oxidizing product

 

PerStor P ™ - helps to minimize biological growth due to its biostatic property without damaging membrane thin film composite.

Is a preservative non-oxidizing powder product for long and short term storage, during RO/NF/UF system’s shutdown.

Features

Protects membrane from biological growth

Non-oxidizing product

Dissolves easily to form a liquid solution

 

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