Explore our industrial range of high-basicity coagulants, flocculants, and advanced color removal polymers designed for challenging municipal and industrial applications.
Aluminum Chlorohydrate (ACH) represents a highly concentrated, polymeric inorganic coagulant within the aluminum family, characterized by a high basicity (typically 83%). It stands at the forefront of municipal and industrial water treatment chemistry. Industrially, the chemical formula is characterized as [Al2(OH)5Cl]·nH2O. Because it offers the highest aluminum oxide (Al2O3) content of any pre-polymerized inorganic coagulant, it provides significantly higher charge density than standard aluminum sulfate (alum) or polyaluminum chloride (PAC).
With the global movement toward chemical footprint reduction and process efficiency, industrial facilities and municipal utilities are shifting from low-basicity salts to high-basicity ACH. In water purification, the high cationic charge density allows for lower dosing requirements, which subsequently translates to a reduction in chemical sludge volume of up to 50–70% compared to traditional metallic salts. This offers massive downstream cost-savings for chemical disposal and sludge dewatering operations.
From a safety perspective, ACH is considered a "safe" coagulant compared to more acidic alternatives. Because it has a pre-neutralized basic structure (83% basicity versus PAC's 30–50% or alum's 0%), it consumes far less alkalinity in the raw water. This eliminates the need for auxiliary pH-adjusting chemicals, such as lime, soda ash, or caustic soda, creating a safer, less corrosive handling environment for plant operators and preventing major structural corrosion in dosing lines and concrete basin infrastructures.
Understanding the molecular properties and quality parameters that define premium ACH formulation and production controls.
| Analytical Parameter | High Basicity ACH (Liquid) | High Basicity ACH (Powder) | Testing Reference Protocol |
|---|---|---|---|
| Aluminum Oxide (Al2O3) Content | 23.0% – 24.0% | 46.0% – 48.0% | GB/T 22627-2014 / AWWA B408 |
| Basicity (Hydroxyl Value) | 82.0% – 85.0% | 82.0% – 85.0% | Acid-Base Titration Method |
| pH Value (1% aqueous solution) | 3.5 – 4.5 | 3.5 – 4.5 | Electrode Potentiometry |
| Insoluble Matter | ≤ 0.1% | ≤ 0.3% | Gravimetric Method |
| Sulfate (SO42-) | ≤ 0.05% | ≤ 0.05% | Barium Sulfate Gravimetric |
| Arsenic (As) | ≤ 0.0001% (1 ppm) | ≤ 0.0002% (2 ppm) | ICP-MS / Atomic Fluorescence |
| Heavy Metals (as Pb) | ≤ 0.0005% (5 ppm) | ≤ 0.001% (10 ppm) | ICP-OES / AAS spectrophotometry |
Our chemical engineering processes utilize controlled acid-metal neutralization to yield stable polynuclear structures. The production steps below highlight the technical milestones in our facility.
Precision-screened aluminum hydroxide (Al(OH)3) is matched with high-grade synthetic hydrochloric acid. Impurity profiles (As, Heavy Metals) are evaluated prior to synthesis to ensure compliance with NSF/ANSI 60 limits.
Reactants are introduced into glass-lined pressurized reactors. Controlled temperature and pressure facilitate the dissolution and polymerization. The process is monitored in real-time to optimize thermodynamic yields of Al13 and Al30 polynuclear species.
Once dissolved, the Al/Cl molar ratio is refined to hit the 83% basicity threshold. The liquid undergoes a stabilization phase to prevent crystallization and guarantee a shelf-life of over 12 months under warehouse conditions.
Liquid ACH passes through filtration units to remove insoluble particles. For solid products, the liquid is atomized in a spray-drying tower under precise heat controls to produce highly soluble, low-dust, non-caking ACH micro-granules.
From municipal drinking water plants to specialized industrial manufacturing, our ACH formulations are customized for diverse operating environments.
In municipal settings, ACH functions as a primary coagulant that reduces turbidity, natural organic matter (NOM), and dissolved organic carbon (DOC). Its rapid hydrolysis rate forms heavy, stable flocs that settle easily in clarifiers. Because ACH consumes less alkalinity than other alum-based solutions, municipal facilities can bypass chemical storage and dosing loops for lime or caustic soda, streamlining process controls.
Our ACH complies with international purity standards for drinking water chemicals. It maintains low levels of trace elements, helping utilities meet strict limits on residual metals and disinfection byproducts (DBPs) by removing NOM before chlorination.
In the personal care sector, USP-grade ACH is the active ingredient in many antiperspirant products. It forms a temporary gel plug in sweat ducts to regulate perspiration.
We manufacture ACH under strict GMP conditions to ensure consistent pH and chemical profiles. This consistency is critical for formulation stability, skin compatibility, and long shelf-life in aerosol, roll-on, and stick antiperspirants.
Within paper mills, ACH serves as a dual-purpose retention aid and charge neutralizer. It neutralizes anionic trash in the white water loop, which improves the retention of fillers, size, and dyes on the paper web.
Using ACH prevents deposition issues caused by pitch and stickies on paper machines, reducing downtime. It also acts as an effective coagulant in paper mill wastewater loops, helping decolorize and clarify discharge streams.
Semiconductor manufacturing processes yield complex wastewater containing fluoride, silica, and heavy metal complexes. Standard coagulants are often insufficient for these streams.
ACH provides a concentrated charge that precipitates colloidal silica and fluoride nanoparticles. This facilitates filtration and recovery, assisting plants in meeting environmental discharge limits and supporting water reuse initiatives.
Wuxi BS Water Treatment Chemicals combines advanced production technology with extensive logistics infrastructure to ensure a reliable global supply.
Wuxi BS Water Treatment Chemicals maintains raw material security by integrating backward into primary aluminum and acid refinement lines. This structure buffers our production schedules from sudden commodity market shocks, ensuring price stability and reliable manufacturing timelines for our global contract partners.
Our facility near Shanghai ports enables convenient access to international shipping routes. We offer flexible supply options from bulk liquid tankers to dry powder containers, maintaining lead times within 7 to 14 days from order placement.
We operate in accordance with ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 management frameworks. Our products are NSF/ANSI 60 certified, confirming their suitability for use in potable water systems.
For European markets, our REACH registration supports frictionless customs clearance. Our compliance and regulatory documentation provides clients with the verification needed for strict regulatory environments.
Find answers to common questions about Aluminum Chlorohydrate chemistry, application dosing, and procurement logistics.
ACH offers higher basicity (83% compared to PAC's 30-50%) and a higher aluminum oxide content (up to 24% for liquid, 47% for solid). It neutralizes charges more efficiently, produces less sludge, and consumes less alkalinity, which minimizes pH variation in treated water.
We monitor trace metal impurities throughout production using ICP-MS. Our ACH meets NSF/ANSI Standard 60, limiting heavy metal and arsenic concentrations to ensure suitability for municipal drinking water systems.
Liquid ACH is best stored in corrosion-resistant vessels such as HDPE, FRP, or rubber-lined steel tanks. It should be kept between 5°C and 35°C to avoid freezing or thermal degradation. Under these conditions, the product has a shelf life of at least 12 months.
We supply liquid ACH in 1,000L IBC totes, 200L drums, and bulk tankers. Dry ACH powder is packaged in 25kg multi-wall bags with PE liners or 1,000kg super sacks. Standard export orders are processed and shipped within 10–15 days.
In most raw water applications with typical alkalinity, ACH operates effectively without pH correction. Under high-turbidity conditions, adding a small amount of high-molecular-weight cationic polymer (like PAM or PDADMAC) can accelerate settling rates.
Submit your raw water parameters and requirements via our contact form. Our technical team will supply the appropriate ACH grade and dosing recommendations for your jar tests or pilot runs.
Explore our additional polymer formulations, including specialized organic decolorizing agents, high-charge polyacrylamides, and PDADMAC liquids.
A history of engineering innovation, capacity expansion, and global integration.
Wuxi Bisheng Water Treatment Agent Co., Ltd. was established to manufacture chemical agents for local industrial municipal utilities.
The company was renamed and consolidated, introducing automated reaction systems to expand capacity and improve product consistency.
Wuxi BS initiated international exports, shipping water treatment agents to distributors and municipal systems across Southeast Asia and South America.
Annual sales revenue exceeded $10,000,000, supported by our expanded production lines and high-basicity ACH and PAC formulations.
We established a dedicated foreign trade division and implemented automated solid feeding systems to optimize batch processing and inventory management.
Contact our chemical engineering and service team to discuss technical specifications, verify product compliance, or coordinate chemical trial shipments.
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