Method for Preparing Reverse Osmosis Flocculants

High-purity white polyaluminium chloride (food grade, 30% content): This white polyaluminium chloride is manufactured using premium aluminium hydroxide powder and hydrochloric acid as raw materials, produced via spray drying. It represents the highest quality grade and is suitable for high-end applications in papermaking, pharmaceuticals, cosmetics, and similar sectors. Preparation Method Dissolution Concentration: Solid PAC is typically prepared as a solution at a weight ratio of 10–20% (i.e., 10–20kg PAC added to 100kg water), stirred for 30–60 minutes until completely dissolved. Dilution instructions: After dissolution, dilute to the required concentration (e.g., 2%-3%). Adjust the dilution ratio according to the turbidity of the raw water; higher turbidity necessitates a lower dilution factor. Dissolution Guidelines: When dissolving, slowly add PAC to rotating water to prevent clumping caused by bulk addition. Dissolution slows below 5°C, but avoid temperatures exceeding 60°C to prevent degradation. When adding flocculant during reverse osmosis pretreatment: Select white, high-purity polyaluminium chloride as the flocculant. Pure water ratio: 1:15. Add pure water first, then the chemical. Dissolve and stir thoroughly in the barrel before transferring to the chemical tank. Dosage: 3 ppm. Dosage Determination: ‌Reference Range‌: The standard dosage ranges from 50 to 200 mg/L (equivalent to 50–200 grams per tonne of water), with specific adjustments required based on raw water turbidity.‌‌ ‌Turbidity-Dosage Correspondence‌: For raw water turbidity between 100–500 mg/L, add 5–20 kg of PAC per thousand tonnes of water. ‌‌ For highly turbid water, dosage may be appropriately increased, but pilot testing is required to avoid excess.‌‌ ‌Pilot Testing Method‌: Conduct beaker tests using water samples. Gradually increase PAC dosage while observing floc formation rate and supernatant clarity to determine the optimum dosage.‌‌ The main products of flocculant manufacturer Xinhuan Water Treatment are: White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polymerized iron and aluminium chloride, and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：86 19139972558 Email：Sunny@xhwtm.com Contact:Sunny