Discover our industrial grade flocculants and coagulants manufactured with extreme precision and stability.
Cationic Polyacrylamide (CPAM) is a highly efficient, water-soluble linear polymer formulated through the copolymerization of acrylamide and cationic monomers (such as DAC, DMC, DMAEMA, or DADMAC). Characterized by its highly reactive positive charge centers along the polymer chain, CPAM is specifically engineered to interact with negatively charged colloidal particles, organic matter, and suspended solids prevalent in municipal sewage and industrial wastewater.
Our manufacturing processes at Wuxi BS Water Treatment focus on molecular weight customization (ranging from 8 million to 15 million Daltons) and charge density tailoring (ranging from 10% to 80% ionic content). These physical parameters dictate the flocculation efficiency, settling rates, and cake filtration resistance across various wastewater matrices.
The Shift Towards Sustainable Synthesis: Over the last decade, global environmental regulations have pushed the polymer chemistry market away from heavy-residual products toward ultra-low monomer content (below 250 ppm) CPAM formulations. Industry demands focus heavily on minimizing micro-toxicity profiles in effluent discharge, encouraging manufacturers to refine their polymerization systems.
Technical and logistics criteria scrutinized by procurement divisions of multinational water companies and chemical distributors.
Procurement agencies mandate a minimum active polymer content of 90% for dry powders to optimize logistics costs and dosage efficiency. Standardized batch testing must prove negligible deviation (+/- 2% max) in molecular weight and hydrolysis degree to prevent process upsets in automated sludge dewatering lines.
CPAM powders must dissolve completely within 45 to 60 minutes under standard agitation. Any presence of insolubles ("fish-eyes") risks clogging dosing pumps, destroying filter belt surfaces, and reducing separation kinetics, raising operations and maintenance costs.
Due to the hygroscopic nature of polyacrylamide, industrial buyers require multi-layer packaging (typically 25kg PE/PP bags with internal moisture barriers or 750kg composite big bags). Extended shelf-life stability (at least 24 months under dry, shaded storage conditions) is critical for strategic stockpiling.
How Wuxi BS Cationic Polyacrylamide aligns with specific heavy-industry operations globally.
Challenge: High organic content, gelatinous structure, and slow gravity drainage rates.
Solution: We apply high-molecular weight (12-15M Daltons), medium-to-high charge density (30%-60% ionicity) CPAM. This creates strong shear-resistant flocs suitable for decanter centrifuges and belt filter presses, lowering moisture content in the final cake and cutting disposal costs.
Challenge: Emulsified oils, variable pH ranges, and complex chemical oxygen demand (COD) matrices.
Solution: Dosing our high-charge density CPAM alongside inorganic coagulants (like PAC or ACH) speeds up oil-water separation. Our products neutralize charges on suspended oil droplets, allowing air flotation units to achieve over 95% oil removal efficiency.
Challenge: Loss of fine fibers, sizing agents, and filler materials, resulting in excessive raw material consumption and high wastewater loads.
Solution: Low-to-medium charge density CPAM acts as a highly efficient retention and drainage aid. It binds fine fibers to the sheet structure, accelerating dewatering on the paper machine wire, improving machine speeds, and reducing white-water solids load.
Challenge: Fine clay mineral suspensions that settle extremely slowly in thickeners.
Solution: Combining specialized ultra-high molecular weight anionic polymers with targeted cationic polyacrylamide blends speeds up mineral settling rates, allowing recycled process water to return to the plant wash circuits immediately.
Founded in 1998, Wuxi BS Water Treatment Chemicals Co., Ltd. is a technology leader with 27 years of expertise in the formulation and mass production of advanced water treatment chemicals. We specialize in producing complete chemical ranges for both domestic drinking water sanitation and complex industrial wastewater purification.
Operating from our highly automated manufacturing plants, we consistently supply critical reagents like Polyaluminium Chloride (PAC), Cationic Polyacrylamide (CPAM), and Water Decoloring Agents to municipality networks and multinational distributors. With ISO-certified quality control systems and dedicated R&D resources, Wuxi BS is dedicated to clean water solutions globally.
High-demand active agents tested and approved for critical purification facilities.
High molecular weight powder designed for rapid settling and sludge cake formation under high shear.
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Dicyandiamide formaldehyde resin-based polymer, ideal for color removal in textile dye-houses.
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Liquid cationic polymer designed for charge neutralization and coagulation in potable water.
View DetailsCustomized molecular weights, active ingredients, and packaging solutions for worldwide markets.
Our experienced chemical engineers provide a full-cycle service, starting from initial "water quality analysis" and product screening to lab jar testing and on-site dosage optimization.
With an annual sales volume exceeding 500,000 tons and a dedicated raw material warehouse holding over 20,000 tons, Wuxi BS secures your supply chain against market volatility.
Powered by automated production lines and comprehensive QC testing protocols, we guarantee batch-to-batch consistency and fast lead times for bulk shipments.
We work closely with university research centers to pioneer new polymer structures, aiming to reduce dissolution times and improve shear stability in sludge processing.
Exporting internationally since 2007, we have developed logistics partnerships across North America, Europe, Southeast Asia, and South America to handle ocean freight and local customs compliance.
Selling water treatment polymers internationally requires strict compliance with local regulatory frameworks. At Wuxi BS Water Treatment Chemicals, our product formulations adhere to international directives:
Additionally, our technical sales engineers provide on-site jar testing and trial runs, helping customers adjust dosing parameters to balance treatment efficiency and cost control.
Recognized and certified by global standards and local environmental groups.
The field of water treatment flocculants is shifting toward smart and green solutions. Wuxi BS keeps pace with these shifts by investing in three primary areas:
Over two decades of development, growth, and commitment to the water purification industry.
Where our specialty polymer formulations are deployed to keep production and environmental footprints clean.
Technical answers from our laboratory experts on product selection, usage, and safety.
Selecting the right CPAM depends on the type of sludge and the dewatering equipment used. For organic-heavy municipal sludge processed by decanter centrifuges, high molecular weight (12-15M) and medium-to-high charge density (30%-50%) are typically required to withstand the high shear forces. For belt presses, slightly lower molecular weights and medium charge densities provide better water release. A laboratory jar test is always recommended to verify performance.
CPAM performs best in neutral to acidic environments (pH 4 to 8). In highly alkaline water (pH > 9), the cationic groups can undergo hydrolysis, reducing the positive charge density and weakening the polymer's ability to neutralize negatively charged particles.
Undissolved polymer particles, known as "fish-eyes," can clog dosing pumps, block filter cloths, and reduce overall flocculation efficiency. Complete dissolution requires feeding the powder slowly into a vortex of clean water, with gentle mechanical stirring (100–300 rpm) for 45 to 60 minutes.
The main difference is the charge of the polymer chains and where they are applied. APAM carries a negative charge and is primarily used for inorganic solids, mining tailings, and industrial water. CPAM carries a positive charge and is used for organic sludge, municipal sewage, and papermaking retention systems.
When stored as a dry powder in its original packaging in a cool, dry, and ventilated warehouse, CPAM has a shelf life of up to 24 months. Once dissolved into a liquid solution, it should be used within 24 to 48 hours, as the polymer chains degrade over time, reducing effectiveness.
While polymerized polyacrylamide is non-toxic, the unreacted acrylamide monomer (AM) is a known neurotoxin. Our production lines at Wuxi BS use advanced polymerization controls to keep residual monomer levels below 250 ppm, complying with international environmental safety standards.
Yes. In many cases, combining inorganic coagulants (like PAC or ACH) with CPAM yields better results than using either alone. The inorganic coagulant neutralizes charges and forms small micro-flocs, which the CPAM then bridges into larger, shear-resistant flocs that settle out rapidly.
Cold water temperatures (below 10°C) slow down the dissolution rate of CPAM and increase viscosity, requiring longer mixing times. In warm temperatures, dissolution is faster, but storage temperatures above 40°C can cause the dry powder to degrade.
Our standard packaging consists of 25kg multi-layer paper-plastic composite bags with an inner PE liner, palletized and shrink-wrapped. We also offer 750kg and 1000kg jumbo bags (super sacks) to suit different bulk handling setups.
Yes. Our R&D team works closely with municipal plants and industrial clients to formulate custom molecular weights, charge densities, and product formats (powder, emulsion, or liquid) based on water samples and target processing goals.
Connect with Wuxi BS Water Treatment Chemicals Co., Ltd. Our engineering team can help you select the right polymer, optimize dosages, and provide competitive pricing.
Tel: +86 13584221461
Email: [email protected]
Follow our company updates, technical developments, and global expansion milestones.
Sep 09, 2025
Wuxi BS Water Treatment Chemicals Co., Ltd. continues to grow its presence in the international market, improving supply logistics and localized technical services...
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Aug 21, 2025
We officially launched our new digital smart feeding equipment, helping clients optimize their chemical consumption and overall processing costs...
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Aug 21, 2025
In line with environmental sustainability goals, Wuxi BS presented new research on composite flocculant safety and carbon footprint reduction...
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