Reverse osmosis flocculant can be added to condense the suspended impurities in water into large particles flocculent, precipitate under the action of gravity, and thus separate from water. Flocculation filtration is to add flocculant in the water, and repeatedly contact the sand filter for flocculation reaction. After reaching a certain volume, the generated flocculent is left in the sand column gap, and the trapped flocculent fully adsorbed the fine alum flowers in the water flow.
There are many types of commonly used flocculants, common aluminum salts, organic flocculants, and flocculants can be added when the flocculant flocculation effect is not ideal. The addition of coagulant aid can significantly improve the internal structure of the flocculant, form larger flocculation particles, settle faster, and also adjust the pH value of the water to create the best flocculation conditions.
Flocculant is mainly used to treat groundwater, if the water company takes water from deep Wells, the turbidity is very low and the organic carbon content in the water is very small, activated carbon and multi-media filter can effectively clean up the organic microorganisms in the water, do not add flocculant. The flocculant itself will have a certain adverse effect on the membrane, which will cause the membrane to be dirty. Adding flocculant will produce flocculent on the surface of the membrane, and may even cause internal pollution of the membrane, resulting in membrane blockage and system pressure increase.
Therefore, if there is no need to add flocculant, considering its adverse effect on the RO device, the dosage can be adjusted appropriately, the dosage of fungicide is 5mg/L, once a week, the dosage of scale inhibitor is 5mg/L, and continuous dosing.
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