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Explore our core polyacrylamide flocculant lineup — precision-formulated for maximum dewatering efficiency in demanding treatment environments.
Cationic Polyacrylamide (CPAM) is a water-soluble, high-molecular-weight polymer carrying positive ionic charges along its backbone chain. These cationic charges enable CPAM to electrostatically attract and neutralize the negatively charged colloidal particles and organic matter suspended in sludge, triggering rapid flocculation and aggregation.
In sludge dewatering applications, CPAM works by bridging fine suspended solids into large, dense flocs that can be efficiently separated from water through mechanical dewatering equipment such as belt filter presses, centrifuges, and plate-and-frame filter presses.
The charge density, molecular weight, and ionic degree of CPAM can be precisely tailored to match specific sludge characteristics — making it the most versatile and effective flocculant available for modern wastewater treatment facilities.
Molecular Weight: 5–20 million Da
Ionic Degree: 10%–80%
Form: Powder / Emulsion
pH Range: 5–10
Solubility: Fully water-soluble
A four-stage electrochemical and physical process that transforms liquid sludge into manageable, dewatered cake.
Cationic groups on CPAM chains neutralize the negative surface charges of suspended particles and colloidal matter in sludge, destabilizing the suspension.
Long polymer chains physically bridge multiple destabilized particles together, forming large, porous floc structures with high settling velocity.
Under gentle agitation, micro-flocs aggregate into macro-flocs with sufficient mechanical strength to withstand shear forces in dewatering equipment.
Dense flocs are fed into belt presses, centrifuges, or filter presses, where free water is expelled rapidly, producing a dry, handleable sludge cake.
The cationic polyacrylamide flocculant market is experiencing robust growth driven by tightening environmental regulations, rapid urbanization, and the global push toward sustainable water management.
The global polyacrylamide market is projected to exceed USD 8 billion by 2030, with CPAM for sludge dewatering representing the fastest-growing segment at a CAGR of over 6.5%, driven by infrastructure investment in Asia-Pacific and the Middle East.
Governments worldwide are enforcing more rigorous standards for sludge disposal and effluent quality. China's "Sludge Ten Regulations" and the EU's Urban Wastewater Treatment Directive revision are compelling treatment plants to upgrade to high-performance CPAM flocculants.
Next-generation CPAM products are being developed with reduced residual monomer content (<0.01% acrylamide), biodegradable formulations, and bio-enhanced variants that combine flocculation with biological nutrient removal for zero-discharge facilities.
Smart water treatment systems now integrate real-time sludge characterization sensors with AI dosing algorithms that automatically adjust CPAM type and concentration, reducing chemical consumption by 15–30% while maintaining optimal dewatering performance.
Advanced dewatering with high-performance CPAM is enabling sludge cake moisture content below 60%, making it viable for energy recovery, construction material production, and agricultural land application — transforming waste into valuable resources.
China accounts for over 40% of global CPAM production capacity, with leading manufacturers like Smedic Technology continuously raising the bar on product quality, customization capability, and supply chain reliability for international markets.
CPAM flocculants deliver measurable performance advantages across a diverse range of sludge dewatering challenges — from urban sewage to complex industrial effluents.
In urban WWTPs processing mixed domestic and commercial wastewater, CPAM with medium-to-high ionic degree (30–60%) is used in centrifuge dewatering to achieve sludge cake moisture below 78%, reducing transport and landfill costs by up to 40%.
Paper mill sludge contains high concentrations of fine fibers and fillers with strong negative charges. High-charge-density CPAM (ionic degree 60–80%) enables rapid floc formation on belt presses, achieving fiber recovery rates above 95% and dramatically reducing effluent BOD.
Slaughterhouse, dairy, and starch processing effluents contain high organic loads and emulsified fats. Low-to-medium ionic degree CPAM combined with PAC coagulation achieves DAF flotation and centrifuge dewatering efficiencies exceeding 90% TSS removal.
Coal washing, phosphate, and metal ore processing generate high-volume tailings slurries. Custom CPAM formulations with ultra-high molecular weight accelerate tailings thickening and filtration, enabling water recycling rates above 85% in closed-loop systems.
Complex chemical plant effluents with variable pH and ionic strength require specially stabilized CPAM grades. Temperature-resistant formulations maintain flocculation efficiency across 5–60°C operating ranges in pharmaceutical and fine chemical manufacturing.
Oily sludge from refinery wastewater treatment requires amphiphilic CPAM variants that can simultaneously demulsify oil-water emulsions and flocculate suspended solids, enabling oil recovery while producing dewatered sludge compliant with hazardous waste disposal standards.
We tailor molecular weight (5–20M Da), ionic degree (10–80%), and physical form (powder/emulsion) to your exact sludge composition and dewatering equipment specifications.
Deployed in 600+ urban sewage treatment plants and 1,000+ industrial facilities across China, with documented cake dryness improvements of 5–12% over competitor products.
Our joint laboratories with Tsinghua University, Shandong University, and Beijing University of Technology continuously advance CPAM formulation science for emerging treatment challenges.
All CPAM products meet residual acrylamide monomer limits (<0.05%), comply with GB/T standards, and are certified under China's National High-tech Enterprise framework for environmental chemicals.
Multiple wholly-owned production bases in Hebei, Guizhou, and Shanxi, plus 10+ OEM partner factories and regional warehouses, ensure consistent supply with annual capacity exceeding 1 million tons.
Our team of senior engineers provides on-site jar testing, dosing optimization, and process troubleshooting services — ensuring you achieve maximum ROI from every kilogram of CPAM applied.
Smedic Technology Co., Ltd. was established in 2011 as a comprehensive solution provider specialized in environmental protection agents, integrating R&D, production, sales, and engineering-related technical services. We are dedicated to providing customers with customized chemical products, technical solutions, and services. Smedic produces environmental protection agents covering multiple sectors such as municipal sewage, industrial wastewater, and tap water treatment, as well as mineral processing agents, and oilfield chemicals. We offer more than 80 different environmental protection products, with an annual production capacity exceeding 1 million tons.
Our corporate headquarters is located in Beijing. We have multiple wholly-owned production bases in Hebei, Guizhou, Shanxi, and other regions, and have set up more than ten OEM partner factories and regional warehousing and logistics bases in Shandong, Shanxi, Anhui, Guangxi, and Sichuan provinces, among others. Our business and service network covers over 20 provinces across China. Our projects involve more than 600 urban sewage treatment plants and over 1,000 end customers in industrial wastewater treatment, mineral processing, and oilfield chemicals. The total sewage treatment capacity involved in the projects exceeds 20 million tons per day. We are a leading company in the Chinese market within the high-end segment of environmental protection chemicals for municipal and industrial wastewater treatment.
We have obtained qualifications such as National High-tech Enterprise, National Specialized, Refined, Unique and Innovative "Little Giant" Enterprise, National Key-Supported Specialized, Refined, Unique and Innovative "Little Giant" Enterprise, Hebei Province Specialized, Refined, Unique and Innovative "Little Giant" Demonstration Enterprise, Hebei Province Green Factory, Hebei Province Science and Technology-based Small and Medium-sized Enterprise, and China's Science and Technology-based Innovative Small and Medium-sized Enterprise.
We have a core technical team composed of academicians, experts, professors, and senior engineers, and have established an R&D system and a technology commercialization platform centered around one academy, three research institutes, and five bases. We have established the Hebei Provincial Enterprise Technology Center, the Hebei Provincial Advanced Water Treatment Chemicals Technology Innovation Center, and the Cangzhou Water Treatment Engineering Technology Research Center, and have been recognized as a Class A R&D institution in Hebei Province.
We have established an expert workstation with Tsinghua University Association of Senior Scientists and Technicians, and have set up joint R&D laboratories with Shandong University and Beijing University of Technology. Additionally, we also serve as a commercialization partner for the industry–academia–research achievements of institutions such as Peking University and Tianjin University.
We have been granted over sixty Chinese patents, including more than forty invention patents and over twenty utility model patents. We have led the drafting of more than ten national and industry standards, including those for composite carbon sources, composite coagulants, sodium acetate, and nitrifying and denitrifying bacterial agents.
The patented technologies and products we have independently developed, such as the bio-enhanced denitrification carbon source and the deep multi-nuclear phosphorus removal agent, have passed the scientific and technological achievement evaluation conducted by the Science and Technology Department of Hebei Province.
These achievements have been appraised as "internationally advanced" and have filled a domestic gap in this product category.
Our "Active Oxygen Compound Disinfectant" has been recognized as a National Construction Industry Scientific and Technological Achievement Promotion Project by the Science and Technology Development Promotion Center of the Ministry of Housing and Urban-Rural Development.
Our independently developed "Inorganic-Organic Covalent Bond Flocculant and Its Advanced Water Purification Technology" has won multiple awards, including the 22nd China Patent Award, the First Prize for Technological Invention from the China Petrochemical Industry Association, the Hebei Province Science and Technology Progress Award, and recognition as a Belt and Road SME Recommended Project.
We have been recognized as the "Leading Brand of Advanced Wastewater Treatment Chemicals" and the "Most Valuable Water Treatment Chemicals Brand" by China Water Network and the E20 Environmental Platform for four consecutive years.
We have established long-term strategic partnerships with dozens of major water groups, including Shouchuang Ecological and Environmental Group, Yangtze River Ecological and Environmental Group, Beijing Enterprises Water Group, OriginWater, and China Water Environment Group, and have been included in their centralized procurement supplier lists.
From cationic sludge dewatering grades to anionic and non-ionic variants for oil recovery and industrial treatment — Smedic offers a complete PAM solution portfolio.
Contact Smedic Technology's expert team for customized CPAM flocculant recommendations, free jar testing support, and competitive factory-direct pricing.
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