Guangxi Polyaluminum Chloride Factory Outlet: Proportion and Dissolution Method of Solid Polyaluminum Chloride PAC Aqueous Solution
Guangxi Polyaluminum Chloride Factory OutletThe solid polyaluminum chloride PAC should be dissolved before use, and the variety, model and use of polyaluminum chloride PAC should be adjusted according to the sewage treatment situation. Therefore, pre-testing must be carried out before use to determine the variety type and dosage of the variety.Guangxi Polyaluminum Chloride Factory OutletIt is reminded that the preparation of PAC aqueous solution should be carried out in enamel, galvanized, aluminum or plastic drums, and cannot be prepared or stored in iron containers.
1. dissolution method:
Solid polyaluminium chloride PAC is used, which is first dissolved to a concentration of 0.1-0.5%, and then takes effect rapidly. During dissolution, PAC is first dissolved with normal temperature tap water. Raising the temperature can slightly promote dissolution, but the water temperature should not exceed 50 degrees. If the water temperature is too high, PAC will undergo thermal degradation, affecting the use effect. Water was added to halve the capacity of the dissolving tank. Turn on the stirrer to stir, stir the water in the dissolving tank at the same time, and slowly add the solid to make it evenly dispersed in the water. Don't let it form bumps, which is easy to block the pipeline and cause waste. In general, PAC requires a stirring time of about one hour to completely dissolve the powder. Poor mixing of polyvinyl chloride mixtures may affect other performance, and even form deposits, blocking pipelines and dosing pumps. Add water at the specified location to adjust the specific concentration. Stir continuously until completely dissolved. If strong stirring is carried out for a long time, it will cause performance degradation, soGuangxi Polyaluminum Chloride Factory OutletIt is recommended to use a mixing speed of about 20-200 revolutions per minute to dissolve the mixing. If the prepared water-soluble liquid is placed for a long time, its performance will gradually decrease with the change of water quality. Therefore, after the preparation of water-soluble liquid, please use it within two days.
2. adding dissolving liquid:
In general, it is necessary to add about 0.1% of the aqueous solution, but when the concentration of the suspension is high and the viscosity is high, it is recommended to further dilute the aqueous solution to about 0.01%, which can play a thorough mixing effect.Guangxi Polyaluminum Chloride Factory OutletIt is considered that, in the case of the suspension, after the addition of the flocculant, if the flocculant is vigorously stirred for a long period of time, the formed flocculate is destroyed, so that the suspension is added after the addition of the prepared aqueous solution.
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