Poly Aluminium Chloride (PAC): Reliable Inorganic Coagulant for Modern‑Day Water Treatment
Water scarcity and stricter environmental discharge standards push water‑treatment facilities worldwide to seek high‑efficiency, cost‑saving coagulant chemicals. Poly Aluminium Chloride, commonly shortened as PAC, has become one of the most preferred inorganic polymer coagulants across municipal and industrial water‑purification projects. If you are sourcing dependable PAC for your water‑treatment workflows, you can explore our full‑range product specifications on the Jinlida Chemical Poly Aluminium Chloride product page.
What Exactly Is Poly Aluminium Chloride (PAC)
Poly Aluminium Chloride (CAS NO.1327‑41‑9) is a pre‑hydrolyzed inorganic polymer compound with chemical formula [Al₂(OH)ₙCl₆₋ₙ]ₘ. It is manufactured by controlled reaction between aluminium hydroxide and hydrochloric acid. PAC is mostly supplied in powder form, with two mainstream grades: industrial grade and drinking‑water grade, packed in standard 25‑kg woven bags.
Different from traditional coagulant alum (aluminium sulfate), PAC features pre‑polymerized aluminium‑hydroxide structures. Once dosed into water, positively‑charged PAC molecules quickly neutralize negative charges on suspended colloids, triggering particle aggregation to form large, dense flocs for fast sedimentation.
Core Application Scenarios of PAC
PAC’s powerful coagulation performance supports multiple water‑treatment sectors.
First, drinking‑water purification. Drinking‑grade PAC clarifies surface water and groundwater, removing turbidity, chroma and natural organic contaminants to meet potable‑water standards. Many water plants replace traditional alum with PAC for lower residual aluminium in finished water.
Second, municipal wastewater treatment. PAC performs well in phosphorus removal and sludge dewatering, helping municipal treatment plants satisfy tightened effluent‑discharge requirements.
Third, complex industrial effluent disposal. Factories from textile printing‑dyeing, papermaking, food processing and chemical production generate hard‑to‑treat wastewater. PAC handles suspended solids, partial colour and organic pollutants efficiently. Besides water treatment, PAC also works as sizing agent and retention aid inside paper‑making workshops; it supports oil‑water separation for oil‑gas produced‑water treatment as well.
Key Advantages of Jinlida PAC Products
Choosing high‑quality PAC directly lowers your overall water‑treatment operating cost. Our PAC brings multiple practical benefits for end‑users.
Superior coagulation efficiency: PAC builds bigger, heavier flocs that settle rapidly and shorten sedimentation cycles. Compared with alum, you only need 30‑50 % of PAC dosage to achieve equivalent purification outcomes, cutting chemical consumption costs.
Wide adaptability to water conditions. PAC maintains stable performance within pH 5.0‑9.0. You do not need frequent pH adjustment chemicals even when raw‑water quality fluctuates. It also delivers reliable coagulation results under low‑temperature raw‑water circumstances where many competing coagulants perform poorly.
Lower residual aluminium. Strict‑quality‑controlled Jinlida PAC keeps dissolved aluminium residue low in treated water, fully matching international drinking‑water safety standards.
Flexible supply & export‑ready packaging. As a China‑based chemical manufacturer, Qingdao Jinlida Chemical Group provides stable‑quality industrial‑grade and drinking‑grade PAC. Our goods adopt standard export‑oriented packaging for global shipment. To check our full product portfolio of water‑treatment chemicals, visit our official site: jinlidaqd.com.
Tips When Sourcing Poly Aluminium Chloride
Many buyers only compare unit prices while ignoring grade differences. Confirm your working scenario first: select drinking‑water‑grade PAC for potable‑water projects; pick industrial‑grade PAC for wastewater treatment. Basicity, alumina content and impurity indexes will greatly affect real‑world treatment results. We recommend conducting jar‑tests before large‑scale dosing.
If you face unstable raw‑water quality or plan to switch coagulant suppliers, contact our technical team for tailored product suggestions.
Final Thoughts
Global demand for PAC keeps rising as water‑protection regulations grow stricter worldwide. As a mature inorganic coagulant, Poly Aluminium Chloride balances high purification efficiency, flexible applicability and reasonable running expenses. Whether you run municipal water plants or handle industrial wastewater, qualified PAC will serve as your solid solution. Check our PAC product page for detailed parameters, packaging and quotation support.
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