Mob.:
+86 156 3115 5652
Mob.:
+86 156 3115 5652
E-mail:
thinkdo_calvin@126.com/thinkdochem@126.com
Mob.:
+86 156 3115 5652
Mob.:
+86 156 3115 5652
E-mail:
thinkdo_calvin@126.com/thinkdochem@126.com
Water Treatment Applications
Polyaspartic Acid (PASP), as a novel green polymer, has become an ideal alternative to traditional phosphorus-containing, non-degradable scale inhibitors and corrosion inhibitors due to its core characteristics: phosphorus-free, environmentally friendly, biodegradable, strong chelation ability, and excellent compatibility. Its application as a green phosphorus-free scale inhibitor and corrosion dispersant spans multiple industrial fields, including industrial water treatment, oilfield development, and light industry manufacturing. Through chelation, dispersion, and lattice distortion, PASP achieves triple functionality—scale inhibition, corrosion protection, and dispersion. It enhances industrial efficiency, protects equipment, reduces environmental costs, and aligns with green and low-carbon policy trends, making it a multifunctional additive with both practical and environmental value.
Industrial water treatment is the most mature and widely applied field for PASP as a scale inhibitor and corrosion dispersant, suitable for open and closed-loop circulating water systems, pure water production, and wastewater treatment. It effectively prevents scaling, corrosion, and sediment deposition, significantly improving water treatment efficiency and equipment lifespan.
In industries such as steel, chemical, power, metallurgy, and pharmaceuticals, PASP effectively chelates metal ions in water, including calcium, magnesium, barium, and strontium. Through lattice distortion, it inhibits the formation and deposition of calcium carbonate, calcium sulfate, calcium phosphate, barium sulfate, achieving a scale inhibition rate above 98%. Simultaneously, it forms a dense protective film on metal surfaces (carbon steel, stainless steel), isolating corrosive ions from the metal surface and reducing corrosion rates, keeping carbon steel corrosion below 0.02 mm/a. Its excellent dispersion properties prevent iron oxide, silt, and sludge from depositing on heat exchangers, pipelines, and cooling towers, maintaining heat transfer efficiency, extending cleaning cycles, and lowering maintenance costs.
PASP is suitable for medium- and low-pressure industrial boilers, inhibiting scale formation, preventing scaling on boiler heat transfer surfaces, and reducing blowdown, improving steam quality. Compared to traditional phosphate-based boiler water treatments, its phosphorus-free feature avoids phosphate scaling and water eutrophication while providing effective corrosion protection, reducing boiler perforation risks.
In RO (reverse osmosis), NF (nanofiltration), and UF (ultrafiltration) systems for pure or ultrapure water, PASP serves as a pretreatment additive. It chelates calcium, magnesium, and heavy metal ions to prevent membrane fouling and scaling, stabilizing desalination rates and water output. Its dispersion ability minimizes suspended particle deposition, maintains stable membrane flux, and meets the high-purity water requirements of electronics, semiconductors, and food & beverage industries.
In thermal or membrane-based seawater desalination and brackish water treatment, PASP effectively inhibits scaling on evaporators, condensers, and membranes, enhancing desalination efficiency and reducing energy consumption. Its biodegradability ensures minimal residuals in treated water, meeting subsequent water use and discharge requirements.
For high-hardness and high-mineralization industrial wastewater, PASP chelates and disperses calcium and magnesium ions, preventing scaling in pipes and equipment during treatment and discharge. It also disperses suspended solids, improving flocculation and sedimentation, facilitating compliance with discharge standards or water reuse.
In oilfield operations such as drilling, production, and water injection, PASP as a scale inhibitor and corrosion dispersant adapts to high-temperature, high-mineralization, and high-corrosion conditions, preventing scaling and corrosion in equipment and formations, ensuring stable and efficient production.
During injection, calcium, magnesium, carbonate, and sulfate ions can precipitate in wells, pipelines, and formation pores, causing blockages. PASP inhibits calcium carbonate and calcium sulfate scaling and provides corrosion protection for injection pipelines and casings. Its dispersion property prevents sediment deposition, maintaining formation permeability and oil production capacity.
As an additive in drilling and fracturing fluids, PASP chelates high-valent metal ions, stabilizing pH and rheological properties, preventing flocculation or thickening. It disperses cuttings, reduces friction, and protects wellbore stability. Its phosphorus-free, biodegradable nature ensures no secondary pollution, supporting green oilfield development.
For pumps, pipelines, and storage tanks, PASP functions as a corrosion and scale inhibitor, preventing scaling and corrosion, reducing maintenance frequency, extending equipment life, and lowering operational costs.
In paper making, dyeing, and metal processing, PASP addresses scaling, corrosion, and material dispersion, enhancing product quality and efficiency.
In pulp, papermaking, and white water recycling systems, calcium and magnesium ions cause scaling and reduce sizing efficiency. PASP chelates metal ions, prevents scaling, and protects metal parts like wire sections and drying cylinders. Its dispersion ability improves fiber and filler (calcium carbonate, talc) retention, enhancing paper uniformity and strength, while reducing white water discharge and enabling water recycling.
High-hardness water in dyeing forms precipitates with dyes and auxiliaries, causing uneven color, color change, and poor fabric feel. PASP chelates and softens water, preventing dye-metal ion precipitation, improving color uniformity and fastness. It also disperses suspended dye particles, aiding wastewater treatment and protecting equipment from corrosion.
In cutting, grinding, and electroplating, PASP chelates metal ions in cutting fluids, cooling fluids, and plating solutions, preventing scaling on equipment and workpieces, while providing corrosion protection. Its dispersion properties prevent accumulation of chips and metal powders, ensuring machining precision and extending fluid lifespan.
Beyond these core industries, PASP as a green, phosphorus-free scale inhibitor and corrosion dispersant can be applied to central air conditioning water systems, cooling tower water treatment, chemical reactors, and food processing water treatment. Its phosphorus-free, biodegradable, and environmentally friendly properties offer unique advantages in food processing and HVAC industries where environmental safety is critical.
As a green, phosphorus-free scale inhibitor and corrosion dispersant, Polyaspartic Acid (PASP) integrates scale inhibition, corrosion protection, and dispersion in a single multifunctional additive. Its advantages—phosphorus-free, biodegradable, highly compatible, and adaptable to complex conditions—make it a vital additive in industrial water treatment and equipment protection. Applications enhance production efficiency, reduce maintenance and environmental costs, minimize dependence on traditional phosphate agents, and promote green, low-carbon, and sustainable industrial development. With rising environmental requirements, PASP’s market potential and application scenarios will continue to expand.
