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Explore our core polyacrylamide product range — precision-engineered for decolorization, sludge dewatering, and sustainable textile wastewater treatment.
Anionic Polyacrylamide (APAM) is a water-soluble, high-molecular-weight polymer synthesized through the copolymerization of acrylamide and anionic monomers such as acrylic acid. With molecular weights typically ranging from 8 to 25 million Daltons and an anionic degree (hydrolysis ratio) adjustable between 10% and 40%, APAM flocculants exhibit exceptional charge density and chain flexibility — properties that make them uniquely effective for capturing and aggregating suspended dye particles, colloids, and fine solids in textile wastewater streams.
In the context of textile dye removal, APAM functions through a combination of charge neutralization, bridging flocculation, and sweep coagulation mechanisms. The negatively charged carboxylate groups along the polymer backbone interact with positively charged dye molecules and metal coagulant flocs, forming large, settleable aggregates that can be efficiently removed by sedimentation, dissolved air flotation (DAF), or filtration.
⚡ Key Insight: APAM flocculants can reduce COD by up to 85%, color by over 95%, and suspended solids by more than 90% in reactive and disperse dye wastewater — outperforming conventional inorganic coagulants when used in optimized dosing systems.
The textile and dyeing industry is one of the most water-intensive manufacturing sectors globally, consuming an estimated 200 liters of water per kilogram of fabric processed. Effluents from dyeing, printing, and finishing operations contain complex mixtures of reactive dyes, acid dyes, vat dyes, disperse dyes, surfactants, salts, and auxiliary chemicals — presenting a formidable challenge for conventional wastewater treatment technologies.
Achieves >95% color removal efficiency for reactive, acid, and disperse dyes through optimized polymer-dye charge interaction and bridging mechanisms.
Effective across pH 5–11, accommodating the wide pH variability typical of combined textile effluent streams without chemical pre-adjustment.
Optimal performance at 2–10 mg/L dosage rates, significantly reducing chemical costs compared to inorganic coagulants used in standalone applications.
Produces dense, rapidly settling flocs that reduce sludge volume by 30–50%, lowering disposal costs and improving overall plant throughput.
Low residual monomer (<0.1%) formulations comply with EU REACH, China GB standards, and international environmental discharge regulations.
Compatible with DAF, clarifier, belt filter press, centrifuge, and membrane bioreactor (MBR) systems — adaptable to existing plant infrastructure.
The global polyacrylamide market was valued at approximately USD 4.8 billion in 2023 and is projected to exceed USD 7.2 billion by 2030, growing at a CAGR of 5.8%. Within this landscape, the water treatment segment — driven significantly by textile and dyeing industry demand — accounts for the largest application share, representing over 35% of total APAM consumption worldwide.
Asia-Pacific dominates both production and consumption, with China, India, Bangladesh, and Vietnam collectively accounting for over 65% of global textile wastewater treatment chemical demand. China alone processes more than 50 billion meters of fabric annually, generating an estimated 2.5 billion cubic meters of dyeing wastewater per year — the vast majority of which requires advanced flocculation treatment before discharge.
Increasingly stringent discharge standards — including China's GB 4287-2012 textile dyeing wastewater standard and the EU's Industrial Emissions Directive (IED) — are compelling textile manufacturers to upgrade from basic coagulation to advanced polymer-assisted flocculation systems. APAM flocculants are at the core of these compliance-driven upgrades.
Southeast Asian textile hubs in Vietnam, Cambodia, and Indonesia are rapidly scaling manufacturing capacity, creating new demand centers for APAM-based wastewater treatment solutions. Local environmental enforcement is tightening, and international brands' supply chain sustainability requirements are accelerating the adoption of high-performance flocculants.
The shift toward Zero Liquid Discharge systems in premium textile manufacturing is creating new application scenarios for APAM — particularly in pre-treatment stages of reverse osmosis and membrane filtration systems, where effective flocculation is critical to protecting membrane integrity and extending service life.
Reactive dyes — used extensively in cotton and cellulose fiber dyeing — present one of the most challenging decolorization scenarios due to their high water solubility, complex chromophore structures, and resistance to biodegradation. APAM with hydrolysis degrees of 25–35% and molecular weights of 12–18 million Daltons demonstrates optimal performance when combined with aluminum sulfate or polyaluminum chloride (PAC) coagulants. The combined system achieves color removal exceeding 97% and COD reduction of 80–88% in continuous flow treatment systems.
Polyester and nylon dyeing operations generate effluents rich in disperse dyes, carriers, leveling agents, and high-temperature process chemicals. APAM's bridging mechanism is particularly effective for capturing the fine colloidal disperse dye particles (typically 0.1–1 μm) that pass through conventional coagulation. High-molecular-weight APAM (18–25 million Daltons) at dosages of 3–8 mg/L achieves turbidity removal exceeding 98% and enables efficient DAF separation.
Screen printing and digital textile printing operations produce highly concentrated effluents containing pigment binders, thickeners, and cross-linking agents. APAM combined with cationic coagulants (PAC or ferric chloride) forms robust floc structures capable of capturing pigment aggregates up to 100 μm in diameter. This application is increasingly important as digital textile printing capacity expands globally, projected to grow at 12% CAGR through 2028.
Beyond clarification, APAM plays a critical role in the dewatering of textile dyeing sludge on belt filter presses, centrifuges, and plate-and-frame filter presses. Tailored APAM grades with specific charge densities condition the sludge floc structure, increasing cake dryness from 18–22% to 28–35% dry solids — significantly reducing transportation and disposal costs for textile manufacturers.
In Zero Liquid Discharge installations, APAM-assisted coagulation-flocculation serves as a critical pre-treatment step before ultrafiltration (UF) and reverse osmosis (RO) membranes. Effective removal of colloidal dyes, organic matter, and suspended solids in the APAM treatment stage reduces membrane fouling rates by 40–60%, extending membrane replacement intervals and lowering the total cost of ownership for ZLD systems.
Next-generation APAM formulations incorporate stimuli-responsive functional groups that adjust charge density in response to pH or temperature changes — enabling self-optimizing flocculation performance across variable effluent conditions.
Research into partially bio-based polyacrylamide incorporating cellulose or chitosan-derived monomers is gaining momentum, addressing sustainability concerns and aligning with circular economy principles in textile manufacturing.
Integration of real-time spectrophotometric monitoring with AI-controlled dosing systems is enabling dynamic APAM dose adjustment based on influent dye load, color, and turbidity — reducing chemical consumption by 15–25%.
Emerging electrochemical regeneration and thermal desorption technologies are being piloted for APAM recovery from dewatered sludge, potentially enabling partial flocculant recycling and reducing raw material consumption.
Advanced inverse emulsion APAM products with rapid dissolution profiles (<60 seconds) are replacing conventional powder forms in automated dosing systems, improving consistency and reducing preparation labor in large-scale textile plants.
APAM is increasingly deployed as part of integrated treatment trains combining electrocoagulation, advanced oxidation (Fenton, ozone), and biological polishing — achieving discharge quality suitable for direct water recycling within textile facilities.
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.
The company was established in 2011.
Over 80 types of environmental protection agent products.
Annual production capacity exceeds one 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. 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.
Explore our comprehensive range of APAM, CPAM, and NPAM flocculants — each engineered for specific textile wastewater treatment challenges and compliant with international quality standards.
Contact Smedic Technology's expert team for customized APAM flocculant recommendations, technical dosing support, and competitive pricing for your textile wastewater treatment application.
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