Product Introduction:

Alkaline aluminum chloride, also known as polyaluminum chloride (PAC) or basic aluminum chloride (BAC), is a novel inorganic polymeric coagulant. Its molecular formula is (Al₂(OH)ₙCl₆₋ₙ)ₘ (where m ≤ 10 and n = 3–5). The solid product appears black for drinking-water-grade applications.Due to the presence of varying numbers of hydroxyl groups in its molecular structure, when added to turbid raw water, it continues to hydrolyze under the pH conditions of the source water. This hydrolysis is accompanied by physical-chemical processes—including coagulation, adsorption, and precipitation—thereby achieving effective water purification.Alkaline aluminum chloride is an intermediate compound between AlCl₃ and Al(OH)₃. It is categorized into two types: standard basic aluminum chloride (produced from two raw materials) and composite basic aluminum chloride (produced from four raw materials, primarily used for treating acidic or fermentation wastewater and offering excellent decolorization performance).

Product Advantages:

Excellent flocculation performance: flocs form rapidly, exhibit high activity and strong filterability, resulting in large floc size and fast settling velocity. This significantly shortens the reaction and sedimentation time, and under appropriate conditions, can enhance treatment capacity by 1.5 to 3.0 times.

Strong adaptability: It functions effectively over a wide pH range, with coagulation achievable at source water pH levels between 5.0 and 9.0. It also demonstrates broad compatibility with various raw water qualities and allows for a wide dosage range. Moreover, its performance is less sensitive to water temperature compared to inorganic coagulants like aluminum sulfate, delivering effective treatment even for low-temperature water.

Ease of operation: It does not require the addition of alkaline coagulant aids, and its performance remains unaffected even if it undergoes deliquescence. At equivalent dosages, it consumes less alkalinity from the water during coagulation compared to other inorganic coagulants, resulting in minimal reduction of the treated water’s pH. When treating high-concentration wastewater, little or no alkaline additives or coagulant aids are needed. Additionally, it causes minimal corrosion to pipelines and equipment, making it well-suited for automated dosing systems.

Superior purification performance: It effectively removes heavy metals and radioactive substances that contaminate water, and demonstrates excellent capabilities in decolorization, deodorization, taste removal, and partial detoxification. The treated water contains lower levels of dissolved salts, which is advantageous for subsequent ion exchange processes and pure water production. Under typical raw water conditions, its coagulation performance surpasses that of conventional inorganic coagulants. The resulting water quality is superior to that achieved with aluminum sulfate and other traditional inorganic coagulants, while the overall treatment cost is 15–30% lower.

High product stability: It has a high concentration of active ingredients, making it easy to store and transport.

Service Industries:

Alkaline aluminum chloride can be applied in various fields, including metal production, chemical manufacturing, wastewater treatment, and pharmaceuticals. In wastewater treatment, it demonstrates excellent purification performance for industrial effluents, papermaking wastewater, and dyeing wastewater, exhibiting particularly outstanding efficacy in treating paper mill and textile dyeing wastewater.