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A comprehensive study on the macro-market development, production routes, and ecological regulatory frameworks governing inorganic polymer coagulants.
In the modern era of industrial processing and municipal urban planning, water purification represents one of the most critical challenges. Among inorganic polymer flocculants, High-Purity Polyaluminium Chloride (PAC) has established itself as the leading choice. Recognized for its excellent structural stability, high molecular weight, and rapid hydrolytic kinetics, High-Purity PAC (typically featuring $\mathrm{Al_2O_3}$ content $\ge 30\%$) has become a standard requirement in chemical coagulation processes globally.
Unlike conventional aluminum sulfate or ferric salts, high-purity PAC is produced through advanced spray-drying systems utilizing synthetic raw materials such as highly purified aluminum hydroxide and hydrochloric acid. This process ensures the material remains free of heavy metal contaminants like Arsenic ($\mathrm{As}$) and Lead ($\mathrm{Pb}$), making it fully compliant with global municipal drinking water standards, including the US NSF/ANSI 60 standard and the European EN 883 regulations.
The global shift toward stricter discharge limits and safer drinking water has changed the chemical requirements for water treatment. Standard industrial-grade PAC (produced from natural bauxite or clay minerals) often contains insoluble materials and trace heavy metals. When applied at scale, these impurities can accumulate in municipal sludge or end up in biological treatment loops.
To address these issues, high-purity PAC uses raw materials and drying methods that limit insoluble residues to less than 0.1%. This reduces membrane fouling in reverse osmosis systems and prevents secondary pollution in delicate chemical manufacturing processes, such as pulp and paper sizing and pharmaceutical water filtration.
SEO Insight on Information Gain: When sourcing High-Purity Polyaluminium Chloride from China, professional buyers look beyond pricing. They prioritize chemical metrics like the basicity ratio ($80\%\text{--}90\%$), polymerization distribution ($\mathrm{Al_{13}}$ and $\mathrm{Al_{30}}$ species), and the chemical stability of the liquid form over long distances. Wuxi BS Water Treatment Chemicals Co., Ltd. addresses these requirements with over 27 years of manufacturing experience.
Understand the precise chemical variance between various grades of Polyaluminium Chloride (PAC) and Aluminum Chlorohydrate (ACH) to optimize your dosing systems.
| Parameter / Specification | High-Purity PAC (PAC-01 Spray Dry) | Industrial Grade PAC (Solid) | Aluminum Chlorohydrate (ACH) | PAFC (Poly-Alum-Ferric) |
|---|---|---|---|---|
| $\mathrm{Al_2O_3}$ Content (\%) | $\ge 30.0\%$ (White Granules) | $28.0\% - 29.0\%$ (Yellow Granules) | $\ge 46.0\% - 50.0\%$ (Liquid/Powder) | $\ge 29.0\%$ (Alum) + $3.0\%$ (Iron) |
| Basicity (\%) | $80\% - 90\%$ | $50\% - 85\%$ | $82\% - 85\%$ | $50\% - 85\%$ |
| Insoluble Matter (\%) | $\le 0.1\%$ | $\le 1.5\%$ | $\le 0.1\%$ | $\le 1.0\%$ |
| pH Value ($1\%$ aqueous sol) | $3.5 - 5.0$ | $3.5 - 5.0$ | $3.5 - 4.5$ | $3.0 - 5.0$ |
| Heavy Metals (As/Pb) | Virtually Zero / Food Grade | Trace levels present | Virtually Zero / High Basicity | Standard industrial limit |
| Primary Application | Drinking Water / Paper / RO Pretreatment | Municipal Sewage / Industrial Wastewater | Antiperspirants / Municipal Drinking Water | High Turbidity / Low Temp Water Treatment |
The efficiency of High-Purity Polyaluminium Chloride is determined by its polymerization configuration, primarily the ratio of monomeric aluminum ($\mathrm{Al^a}$), oligomeric aluminum ($\mathrm{Al^b}$), and highly polymerized aluminum ($\mathrm{Al^c}$). In high-purity spray-dried products, the dominant chemical species is $\mathrm{[Al_{12}O_4(OH)_{24}(H_2O)_{12}]^{7+}}$ (the $\mathrm{Al_{13}}$ Keggin ion) alongside the larger $\mathrm{Al_{30}}$ structures.
These highly charged polycations provide strong charge neutralization, destabilizing negatively charged colloidal particles (such as humic acids, clay particles, and bacteria) at lower dosages than traditional metal salts. This reduces the amount of chemical sludge produced and prevents significant drop in the treated water's pH, minimizing the need for subsequent alkaline neutralization.
Tailored coagulant application frameworks designed to solve purification issues across different industries.
For over 27 years, Wuxi BS Water Treatment Chemicals Co., Ltd. has developed high-performance chemical solutions for drinking water and domestic/industrial wastewater management.
By integrating advanced automated spray-drying towers, real-time polymerization monitors, and a dedicated quality control program, we produce water treatment solutions that meet global standards. We provide technical support, customized formulation services (OEM/ODM), and water analysis for customers worldwide.
Providing high-value OEM/ODM services backed by raw material sourcing control and experienced chemical engineers.
Our chemical engineers customize molecular weights, basicity levels, and formulation structures to target your specific water conditions.
Advanced digital spray-drying towers allow us to produce high-purity solid coagulants without dust or caking.
We work with international logistics networks to ensure timely shipping, complete batch documentation, and secure transit.
Demonstrating our commitment to quality standards, environmental management, and production safety.
Stay informed about global trends, technical advancements, and corporate milestones in the water treatment sector.
Wuxi BS Water Treatment Chemicals Co., Ltd. (hereinafter referred to as Wuxi BS) is expanding its international operations, bringing specialized water purification chemicals and services directly to global markets.
Wuxi BS has introduced advanced digital intelligent solid feeding equipment, improving dosing accuracy and handling efficiency for industrial water treatment applications.
The 2025 Innovation and Development Conference highlighted the role of advanced coagulants in supporting national carbon neutrality and environmental initiatives.
Common questions from water treatment engineers and chemical procurement managers resolved by Wuxi BS technical experts.
Speak with our chemical specialists to find the right coagulant formulation, determine optimal dosage rates, or request batch samples for jar testing.
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