Engineered for unmatched charge neutralization, floc formation velocity, and molecular weight distribution.
A technical overview of Aluminum Chlorohydrate’s performance profiles compared to standard PAC and Alum coagulants.
Aluminum Chlorohydrate (ACH) is a highly concentrated, polymeric inorganic aluminum complex. Characterized by a high basicity (typically 83% to 84%) and high alumina content ($Al_2O_3$ up to 23% in liquid form, and 46% to 50% in solid powder form), ACH represents the pinnacle of modern primary coagulation chemistry. Unlike traditional aluminum salts such as aluminum sulfate (alum) or standard polyaluminum chloride (PAC), ACH contains the stable, highly charged polynuclear aluminum ion complex known as the $\text{Al}_{13}$ polymer (specifically $\text{[Al}_{12}\text{O}_4\text{(OH)}_{24}\text{(H}_2\text{O)}_{12}\text{]}^{7+}$ or its larger, more stable derivative $\text{Al}_{30}$).
This macro-molecular structure allows for extreme charge density per unit of aluminum, resulting in rapid destablization of negatively charged colloidal particles in raw water. In municipal wastewater treatment and drinking water purification systems, ACH delivers superior performance by transitioning instantly into sweep flocculation without dramatically shifting the pH profile of the source water. The high basicity means that minimal alkalinity is consumed during hydrolysis, eliminating the need for neutralizing additives such as lime or sodium hydroxide.
| Parameters | Aluminum Chlorohydrate (ACH) | Polyaluminum Chloride (PAC) | Aluminum Sulfate (Alum) |
|---|---|---|---|
| Al₂O₃ Content (%) | 23% (Liquid) / 46%-50% (Powder) | 10%-15% (Liquid) / 28%-30% (Powder) | 8% (Liquid) / 17% (Solid) |
| Basicity (%) | 83% - 85% | 50% - 75% | 0% (Highly Acidic) |
| Alkalinity Consumption | Negligible (under 10%) | Moderate (40%-60%) | Very High (100%) |
| Optimal pH Range | 5.5 - 9.0 (Extremely Broad) | 6.0 - 8.5 | 6.0 - 7.5 (Narrow) |
| Sludge Production Volume | Lowest (Reduced up to 50%) | Moderate | High (Dense Hydroxide Sludge) |
In water treatment processes, coagulants operate under two primary mechanisms: charge neutralization and sweep-gel coagulation. Aluminum Chlorohydrate utilizes both simultaneously but with enhanced thermodynamic efficiency. Because ACH's poly-cationic species carry charge values up to $+7$, they instantly adsorb onto colloidal impurities (silica, clays, organic humic substances) that carry negative charges. This neutralizes the zeta potential of the particles, allowing Van der Waals forces to dominate and initiate micro-floc formation.
Furthermore, because ACH is already pre-polymerized, it bypasses the intermediate monomeric hydrolysis steps that consume alkalinity. Consequently, it creates larger, more shear-resistant flocs that settle up to three times faster than those generated by aluminum sulfate. This property makes ACH particularly beneficial in high-rate clarification systems, dissolved air flotation (DAF) units, and direct filtration systems where contact times are minimal.
Founded in 1998, Wuxi BS Water Treatment Chemicals Co., Ltd. possesses advanced production technology and rich management experience. We specialise in producing a series of water treatment products for the treatment of drinking water and various types of domestic and industrial wastewater.
Years of Engineering & Manufacturing Experience
Tons of Annual Coagulant Sales Volume
Tons of Finished Product Warehouse Capacity
Global Industrial & Municipal Clients Served
Continuous innovation in polymeric chemistry to meet strict environmental demands and process optimizations.
Developing ultra-high basicity (>85%) formulations that completely eliminate the need for alkaline dosing agents in soft or low-temperature raw water inputs, minimizing operational complexity.
Implementing high-purity raw hydrochloric acid and high-purity aluminum hydroxide mineral processing technologies to synthesize cosmetic-grade and pharmaceutical-grade ACH with near-zero trace metals.
R&D efforts focused on blending ACH with cationic organic polymers (like PDADMAC and Polyamines) inside the reactor to produce single-dose, high-efficiency hybrid clarifying agents.
Wuxi BS Water Treatment operates a highly optimized manufacturing hub, deeply integrated into the Yangtze River Delta's chemical supply network. Our strategic geographical positioning ensures raw materials (hydrochloric acid and high-purity alumina) are piped or delivered continuously, insulating us from volatile global raw material shocks.
By implementing digital, automated solid-feeding systems and real-time reactor pressure control systems, we maintain a production cycle that minimizes thermal energy loss, reduces waste footprints, and provides unmatched cost competitiveness on bulk shipping orders.
Providing specialized solutions matching localized environmental regulations, water qualities, and industrial needs.
Meeting international quality marks to ensure safe delivery, high-quality standards, and environmental compliance.
Our municipal grades strictly comply with NSF/ANSI Standard 60, EN 883, and AWWA B408 guidelines, ensuring minimal trace toxic metals (arsenic, lead, mercury) during dosing.
For deodorant and antiperspirant manufacturing, we offer USP-grade ACH conforming to FDA regulations, guaranteeing low iron content and excellent optical clarity.
Full registration and regulatory alignment with EU REACH, US EPA TSCA, and localized SDS documentation to assist custom clearance processes in any port.
Tailored molecular weights, basicity ratios, and packaging configurations matching your custom operation profiles.
Our dedicated chemical engineering group provides full-cycle "water quality diagnostics" to design customized coagulant recipes.
With 500,000+ tons annual capacity and huge warehousing reserves, we effortlessly secure contract stability for regional distributors.
Supported by digital intelligent production lines and a thorough, ISO-certified raw material to finished product control regime.
Since 2007, our products have successfully reached over 40 countries, leveraging highly robust packing standards for maritime voyages.
Our quality management is audited against ISO9001, ISO14001, and OHSAS18001 standards. View our latest compliance and patent certifications:
In-depth insights prepared by our Lead Chemist for water treatment engineers, distributors, and procurement officers.
Our engineering and logistics teams are ready to configure the optimal shipping, dosing, and bulk pricing specs for your operations.
Submit your fluid specifications, pH environment, or requested coagulant grades to receive an accurate quote within 24 hours.
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