Polyaluminium chloride(PAC) is a water-soluble substance. It has good thermal stability and high solubility. At the same time, it is also a polymer flocculant. It is widely used in water treatment process.
In order to achieve better treatment effect, polyaluminium chloride should pay attention to the following matters, and then strictly control its influencing factors to achieve good effect.
There are occasional bubbles in the use of polyaluminium chloride. Because of the different water quality, the reaction of adding polyaluminium chloride is also different during treatment. Therefore, when we first add water purifying agents, we first know the quality of the treated sewage. We can do a small test first. For different water, the dosage range of polyaluminium chloride is 100-1000mg / L; The dosage range of polyacrylamide is 4-20mg/l. As for adding polyaluminum chloride, there are many bubbles. It may be that there is a lot of bubbles in the subsequent biochemical aeration tank. If it is, it may be too much polyacrylamide, or too much dispersant and so on in the production process. There is also the phenomenon that occurs in the initial stage of sludge culture in the aeration tank, which will disappear after about a week.