Poly Aluminium Chloride (PAC) is a widely used coagulant for water treatment and industrial processes.
Poly Aluminium Chloride (PAC) is an inorganic polymer coagulant designed primarily to remove suspended solids and turbidity from water.
Packaging
25 kg bags, 200L drums
Supply Region
Kenya, East Africa
Supplier
Zenco Systems Ltd
Poly Aluminium Chloride (PAC) is an inorganic polymer coagulant designed primarily to remove suspended solids and turbidity from water. It is widely applied in regions including Kenya, Uganda, Tanzania, and Rwanda for its effectiveness in both municipal and industrial water treatment settings. PAC's role extends beyond mere clarification; it accelerates sedimentation and enhances filtration efficiency, making it indispensable in diverse sectors such as chemical manufacturing, textiles, paper production, and mining.
As a versatile chemical supplied by Zenco Systems Ltd, PAC helps operations teams achieve stable water quality and cost efficiency. Its commercial importance lies in delivering rapid coagulation with relatively low dosing rates, thereby reducing operational downtime and sludge volumes. Facilities in East Africa depend on this chemical not only for potable water purification but also for wastewater treatment processes that seek to meet regulatory discharge standards.
Chemically, Poly Aluminium Chloride consists of polymeric aluminium hydroxide chlorides, often represented by the formula Aln(OH)mCl3n-m, where the ratio of hydroxide to chloride defines its basicity and performance characteristics. The product supplied by Zenco Systems Ltd typically features medium basicity, which balances rapid coagulation kinetics with manageable residual aluminium levels.
The coagulation mechanism relies on neutralizing negatively charged colloidal particles suspended in water. PAC’s positively charged polymeric aluminium species bridge the particles, destabilizing them, and encouraging aggregation into larger flocs. These flocs settle faster due to increased mass, facilitating easier removal through sedimentation or filtration. Compared to traditional coagulants like aluminium sulphate or ferric chloride, PAC exhibits faster action and lower sludge volume generation, translating into operational savings.
PAC is usually supplied in a granular or powdery yellowish solid form, which dissolves readily in water to form a clear solution. Its solubility and stability depend on storage conditions—exposure to moisture can cause premature hydrolysis, reducing efficacy. Hence, proper handling and storage are critical to maintaining performance.
In water treatment plants serving East Africa’s expanding urban and industrial demands, PAC enables reliable removal of turbidity, organic matter, and heavy metals. Its effectiveness across varying pH ranges and temperature conditions further supports its widespread adoption. Additionally, its compatibility with other treatment chemicals and ability to maintain clarity without excessive residual aluminium highlight its technical advantages.
In municipal water treatment, PAC is applied to coagulate and remove suspended solids, turbidity, and natural organic matter. Typical dosing ranges between 10 to 50 mg/L depending on raw water quality. Rapid floc formation improves sedimentation, enabling facilities in Kenya and Tanzania to provide clean drinking water with minimal residual aluminium, ensuring compliance with health standards.
PAC is frequently used in industrial and municipal wastewater plants to precipitate suspended solids and contaminants. It enhances sludge dewatering qualities and reduces treatment cycle time. In textile and paper wastewater, it effectively removes colour and chemical oxygen demand (COD), facilitating safer effluent discharge or reuse.
In mining operations, PAC acts as a flocculant to settle tailings and clarify process water. Its rapid coagulation minimizes downtime in recycling water circuits. The low sludge volume and easy handling reduce environmental impact and disposal costs in East African mining sites.
Paper mills utilize PAC for water clarification and fibre recovery. It binds fine suspended solids and fillers, enhancing paper sheet formation and reducing water consumption. This contributes to more sustainable production processes in the paper industry across Kenya and Uganda.
In textile dyeing and finishing, PAC removes dyes, suspended fibres, and chemicals from wastewater streams. It improves colour removal efficiency and reduces COD loads, aiding mills in meeting discharge regulations and maintaining cleaner production cycles.
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Because PAC contains polymeric aluminium species with high charge density, it neutralizes and aggregates suspended particles more rapidly than conventional coagulants. This leads to faster floc formation, reduced sedimentation times, and increased throughput in water treatment plants.
PAC generates less sludge compared to aluminium sulphate or ferric salts due to its polymeric nature and optimized basicity. This decreases disposal frequency and cost while reducing operational downtime related to sludge handling.
Poly Aluminium Chloride operates effectively over a broad pH range (typically 5.5 to 8.5), allowing treatment of variable raw water qualities without extensive chemical adjustments. This stability simplifies dosing and control strategies on site.
PAC's chemical properties make it highly compatible with additional water treatment steps such as filtration, disinfection, and membrane processes without causing adverse interactions or excessive residuals.
Zenco Systems Ltd provides consistent medium basicity PAC tailored for East African conditions, backed by technical support to optimize dosing and performance. This offers operators peace of mind for continuous production.
Poly Aluminium Chloride supplied by Zenco Systems Ltd is available in 25 kg bags for manageable handling and storage in water treatment and industrial facilities. For larger scale applications, 200L drums are offered as an economical option. Customers in Kenya, Uganda, Tanzania, and surrounding countries benefit from reliable cross-border logistics ensuring timely delivery of these standard commercial formats. On request, bulk supply arrangements may be discussed to facilitate large industrial consumption.
Standard formats: 25 kg bags, 200L drums
Poly Aluminium Chloride should be stored in a cool, dry place away from moisture and incompatible substances. Containers must be tightly sealed to prevent hydrolysis, which degrades coagulation performance. Ideal storage temperatures are between 5°C and 30°C. Avoid exposure to atmospheric humidity and direct sunlight. Handling requires gloves and eye protection due to its corrosive nature. Spills must be cleaned carefully to avoid skin or mucous membrane contact. Proper storage extends shelf life, which generally spans 6 to 12 months under optimal conditions.
Poly Aluminium Chloride is classified as corrosive and irritant. Personal protective equipment including gloves, eye protection, and protective clothing is mandatory during handling. In case of skin contact, rinse immediately with plenty of water. Eye contact requires urgent medical attention. Adequate ventilation is required when dissolving the product in water to avoid dust inhalation. Dispose of waste material and containers according to local regulations. The product's Safety Data Sheet (SDS) from Zenco Systems Ltd provides comprehensive hazard and first aid information.
Poly Aluminium Chloride is used mainly as a coagulant to remove suspended solids and turbidity from water and wastewater in municipal and industrial settings.
Dosage varies depending on water quality but typically ranges from 10 to 50 mg/L. Optimizing dose requires jar testing to balance coagulation efficiency and residual aluminium.
Yes, when dosed correctly and followed by proper filtration, PAC is widely approved for drinking water purification with acceptable residual aluminium levels.
Zenco Systems Ltd supplies PAC primarily in 25 kg bags and 200L drums, suitable for small to large scale industrial usage across Kenya, Uganda, Tanzania, and neighbors.
Store PAC dry in sealed containers away from moisture and extreme temperatures (optimal 5-30°C) to prevent hydrolysis and maintain coagulation performance.
Yes, Zenco Systems Ltd supplies PAC throughout East Africa, including Uganda, Tanzania, Rwanda, and neighboring countries, with logistics support for cross-border delivery.
PAC is generally compatible with common water treatment chemicals like chlorine and activated carbon, but site-specific compatibility tests are recommended.
Gloves, eye protection, and protective clothing are essential due to its corrosive nature. Adequate ventilation is recommended to avoid inhaling dust.
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