Advanced coagulants tailored for high-basicity operations, dynamic sweep flocculation, and extreme water conditions across Spanish industrial sectors.
Spain is facing severe, structural water stress driven by long-term hydrological shifts, rising average temperatures, and localized drought events—especially in critical agro-industrial and manufacturing clusters such as Andalusia, Catalonia, Murcia, and the Valencian Community. The Spanish national water management authorities, alongside municipal operators like Canal de Isabel II in Madrid and Aigües de Barcelona, must manage raw water sources characterized by highly variable organic loading, hard mineral background levels, and elevated seasonal turbidity.
In this challenging hydrological context, conventional aluminium sulfate (alum) is increasingly proving inadequate. Under fluctuating raw water pH and temperature, alum is highly sensitive and prone to leaving excessive residual aluminium ions in treated drinking water, risking non-compliance with Spain's strict Real Decreto 3/2023 (governing water quality for human consumption). Polyaluminium Chloride (PAC), with its pre-hydrolyzed polymeric structures, has emerged as the premier coagulation choice across both municipal drinking water facilities and industrial wastewater recycling plants throughout the Iberian Peninsula.
Polyaluminium chloride is synthesized to possess varying degrees of basicity (typically measured as the percentage of hydroxyl groups relative to aluminium ions). High-basicity formulations (spanning 65% to 85% basicity ratios) offer unique operational advantages for Spanish water utilities:
The efficiency of Polyaluminium Chloride is fundamentally determined by its chemical structure, specifically the distribution of polymeric species. During the controlled hydrolysis of aluminium chloride, various oligomers are formed, including monomeric aluminium ($Al_a$), medium-polymeric species ($Al_b$, primarily the highly active Keggin-structure $Al_{13}$ polymer: $[AlO_4Al_{12}(OH)_{24}(H_2O)_{12}]^{7+}$), and larger colloidal structures ($Al_c$).
Our manufacturing processes utilize advanced temperature control and precise base-addition rates to maximize the concentration of the $Al_{13}$ polymer. This specific structure provides maximum positive charge density per unit of aluminium, ensuring rapid charge neutralization of negatively charged colloidal impurities (such as humic acids, clays, and bacteria). This chemical control results in a much faster coagulation process, forming larger, heavier flocs that settle up to 2.5 times faster than those generated by alum, thereby maximizing the volumetric capacity of existing Spanish sedimentation basins without requiring costly physical plant expansions.
Our technical team conducted a comparative evaluation on raw water sourced from the Ebro River basin (average NTU: 45, average pH: 7.8, total hardness: 220 mg/L as CaCO3). The results demonstrate the outstanding efficacy of High-Basicity PAC in demanding operational environments.
Wuxi BS Water Treatment Chemicals Co., Ltd., established in 1998, integrates digital manufacturing processes with advanced research to supply top-tier municipal and industrial clients globally.
Operating from our modern production facilities, we specialize in drinking water grade and industrial grade Polyaluminium Chloride (PAC), Polyacrylamide (PAM), Aluminum Chlorohydrate (ACH), and specialty decolorizing agents. Since 2007, our products have been exported globally through reliable distribution networks, supported by dedicated laboratories that offer customized "water quality diagnostics" to ensure optimum dosing chemistry and lowest operational costs for our partners in Spain and across Europe.
Importing industrial chemicals into the European Union requires compliance with strict environmental, health, and quality standards. For Spanish purchasers, ensuring that chemical supplies conform to European regulations is vital for legal security and risk management.
Our entire portfolio of water treatment chemicals, including our high-purity Polyaluminium Chloride, is fully registered under the REACH regulation (EC No 1907/2006). This guarantees that all substances have been thoroughly evaluated for human health and environmental safety. For drinking water applications, our PAC products strictly comply with the requirements of European standard UNE-EN 888:2005 (Chemicals used for treatment of water intended for human consumption - Polyaluminium hydroxide chloride silicate). This ensures that impurities like lead, arsenic, cadmium, and mercury remain well below the strict threshold limits allowed in municipal drinking water supplies.
We provide comprehensive supply chain configurations to optimize transit times and import duties for Spanish buyers:
| Standard | Status |
| EU REACH | ✔ Fully Registered |
| UNE-EN 888:2005 | ✔ Compliant (Drinking Grade) |
| ISO 9001:2015 | ✔ Certified Facility |
| ISO 14001:2015 | ✔ Certified Facility |
A history of continuous innovation, capacity expansion, and global expansion in the water treatment industry.
Our advanced manufacturing facility was established to produce high-performance coagulants for municipal drinking water and industrial wastewater systems.
We expanded operations and officially renamed the business to Wuxi Bisheng Water Treatment Agent Co., Ltd. (Wuxi BS), marking a commitment to technical scale.
Our foreign trade division launched, starting exports of high-basicity PAC and cationic polymer formulations to partners across Southern Europe and Latin America.
Our annual international sales exceeded $10 million, reflecting strong adoption of our spray-dried PAC and specialty decolorizers in global markets.
We upgraded to smart digital feeding equipment, integrated process controls, and expanded direct supply routes to service municipal utilities in Spain.
Expert answers addressing chemistry, dosage optimization, logistics, and compliance for the Spanish market.
Explore our wide range of coagulants, polymeric flocculants, and customized decolorizing agents designed for Spanish industrial sectors.
Get a direct quote, arrange product samples, or schedule a technical jar test evaluation with our laboratory engineers.
BS Water