The national standard content of solid polyaluminum chloride is 28%, and the liquid content is 10%. Before using solids, the solids should be dissolved into 10% concentration (gas mixing or mechanical mixing can be used for dissolution). The dosage can be determined according to the turbidity of raw water. Generally, 10-20kg/1000 tons of water can be added when the turbidity of raw water is 100-500mg/l, and the details can be determined according to the small test.
How much polyaluminium chloride is needed to treat one ton of sewage? Polyaluminum chloride is used in sewage treatment. It is mainly a solid substance of yellow or yellowish brown powder. Water treatment has a flocculating effect and is suitable for professional water treatment in printing and dyeing plants, paper mills, leather factories, food factories, etc. It also has a phosphorus removal effect. It can deposit with phosphate radical in wastewater and is suitable for phosphorus removal in sewage plants. Because the effects are different, the concentration and dosage of the products are very different. How do we determine the concentration and dosage of polyaluminum chloride.
Mix the solid polyaluminum chloride (at room temperature) with 1:3 water. After the medicine is dissolved evenly for about 30 minutes, add 25-30 times of fresh water to dilute it, and then put it into water for operation. The dosage for drinking water purification is 1/100000 of the raw water, that is, the dosage (solid) per thousand tons of water is about 15kg polyaluminum chloride. For sewage treatment, the best dosage can be found through experiments according to the different turbidity and content of the local water quality. Before use, make a small test to find out the good dosage, and then add it.
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