Direct supply from state-of-the-art Chinese chemical production bases. Maximizing treatment efficiency, ensuring regulatory compliance.
Rapid industrialization, coupled with stringent environmental regulations, has placed immense pressure on municipal and industrial water treatment systems worldwide. Traditional water treatment methods are no longer sufficient to meet modern standards. Today, advanced coagulants and flocculants are critical to removing heavy metals, suspended solids, phosphorus, and organic pollutants.
Aluminum-based coagulants, specifically Aluminum Chloride ($AlCl_3$) and Polyaluminum Chloride (PAC), represent the cornerstone of modern chemical water purification. As industrial plants scale their operations and municipal installations expand, the demand for high-performance chemical solutions that offer rapid settling times, minimal sludge generation, and excellent cold-water performance has surged.
Aluminum Chloride ($AlCl_3$) and its polymeric relative Polyaluminum Chloride (PAC) are primary inorganic coagulants. Their primary function in aqueous systems is charge neutralization and sweep flocculation. Raw water contains colloids (such as clay particles, organic matter, and microbes) that carry negative electrostatic surface charges, keeping them suspended in water due to mutual repulsion.
When Aluminum Chloride is dissolved, it releases highly charged trivalent aluminum ions ($Al^{3+}$) and various polynuclear hydroxo-complexes (like $[Al_{13}O_4(OH)_{24}(H_2O)_{12}]^{7+}$). These positively charged complexes adsorb onto the surface of negatively charged colloidal particles, neutralizing their charge. This process collapses the electrical double layer surrounding the particles, allowing van der Waals forces to pull them together into microflocs.
At appropriate pH levels, aluminum ions precipitate out as amorphous aluminum hydroxide ($Al(OH)_3$). This precipitate forms a sticky, gelatinous matrix that physically sweeps through the water column, entrapping smaller particles that were not fully destabilized. Simultaneously, these aluminum compounds react chemically with soluble orthophosphates to form insoluble aluminum phosphate ($AlPO_4$), which precipitates out and is easily removed via sedimentation, effectively eliminating nutrient pollution.
| Coagulant Type | Chemical Form | Basicity Range (%) | Optimal pH Range | Primary Applications |
|---|---|---|---|---|
| Aluminum Chloride | $AlCl_3$ (Anhydrous/Liquid) | 0% | 5.5 - 6.5 | Sludge dewatering, industrial wastewater, petrochemical cracking catalysts. |
| Polyaluminum Chloride (PAC) | $[Al_2(OH)_nCl_{6-n}]_m$ | 35% - 85% | 5.0 - 9.0 | Municipal tap water, paper mill effluent, heavy metal binding. |
| Polyferric Sulfate (PFS) | $[Fe_2(OH)_n(SO_4)_{3-n/2}]_m$ | N/A | 4.0 - 11.0 | Dye manufacturing, complex organic wastewater, cod removal. |
Smedic Technology Co., Ltd. was established in 2011 as a leading comprehensive solution provider specialized in environmental protection agents. We integrate R&D, production, sales, and engineering-related technical services to provide custom chemical formulations and optimization services. Our extensive portfolio covers municipal sewage, industrial wastewater, tap water purification, mineral processing agents, and oilfield chemicals.
With corporate headquarters based in Beijing, Smedic operates wholly-owned production bases in Hebei, Guizhou, Shanxi, and other regions, supported by more than ten regional warehousing and logistics bases in Shandong, Anhui, Guangxi, and Sichuan. This ensures high-speed distribution, minimal lead times, and lower supply chain risks for our global clients.
Today, our business network spans across 20 provinces in China and exports globally. We serve over 600 urban sewage treatment facilities and over 1,000 end-users in specialized heavy industries, treating an aggregate volume of over 20 million tons of wastewater every single day.
We are recognized as a National High-tech Enterprise and a National Specialized, Refined, Unique and Innovative "Little Giant" Enterprise. Our dedicated technical team includes academicians, professors, and senior engineers collaborating with top-tier research institutes.
Our production facilities are certified under international quality, environmental management, and safety protocols, adhering to strict global industry standards.
Leveraging advanced chemistry and manufacturing protocols to deliver superior value to wastewater treatment operators.
We modify basicity, active aluminum concentration, polymer chain length, and pH levels to match the specific flocculation speed and water characteristics of your plant.
With an annual capacity exceeding 1 million tons across multiple facilities, we secure stable procurement contracts without vulnerability to market shortages.
Our Class A municipal-level water laboratory provides complimentary jar testing, dosage calculations, and sludge volume studies to optimize your operations.
A history of innovation, scale expansion, and chemical engineering achievements.
Smedic was founded, introducing high-efficiency coagulants to the domestic water purification market.
Established a complete portfolio of environmental chemicals, optimizing logistics for municipal partners.
Recognized as a Key National High-Tech Enterprise, unlocking federal R&D grants for novel polymeric chemistry.
Built and commissioned a massive production base in Guiyang, securing regional capacity for Southwest China.
Production bases across Hebei, Shandong, and Guizhou reached a combined capacity exceeding 1 million tons per annum.
Official designation as a National Specialized, Refined, Unique and Innovative "Little Giant" Enterprise.
Established the Hebei Province Advanced Water Treatment Chemicals Technology Innovation Center.
Appraised as a National Intellectual Property Advantage Enterprise with over 60 utility and invention patents.
Partnered with the Chengdu Institute of Mineral Comprehensive Utilization, China Geological Survey to advance raw mineral processing agents.
Smedic's chemical agents are used globally in challenging operational environments, tailored to specific wastewater characteristics.
In electronics manufacturing, metal finishing, and plating facilities, effluents contain toxic dissolved heavy metals like copper, nickel, chromium, and lead. Traditional alkaline precipitation often fails to meet strict environmental regulations when complexing agents are present. Smedic's Heavy Metal Removal Agent uses chelating polymers to bind heavy metal ions, creating stable, insoluble flocs that settle rapidly, even in high-flow systems.
Refining and oil extraction produce complex water emulsions stable due to natural surfactants and hydrocarbons. Our customized **Mineral Oil Defoamers** and organic silicone formulations break these oil-water emulsions rapidly, preventing foaming in aeration tanks and clarifying towers while protecting critical downstream RO filtration membranes from fouling.
Mineral processing plants handle high volumes of slurry with massive amounts of suspended solids. To recycle wash water quickly, operators require high-efficiency flocculants. Using Smedic's **Premium Anionic Polyacrylamide (APAM)** alongside Polyaluminum Chloride yields extremely fast settling times, ensuring clear overflow water can be reused immediately, reducing raw water intake.
Technical guidance and product specifications for global chemical buyers and project engineers.
Explore our comprehensive range of municipal and industrial water purification agents designed for diverse treatment needs.
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