The reason why polyaluminum chloride is put into water to produce foam. The situation of adding polyaluminum chloride to water treatment to produce foam mostly occurs in winter and spring, which is mainly due to the low temperature in these two seasons, which is easy to cause microfilament bacteria. Therefore, adding polyaluminum chloride at this time will produce foam. In summer, this kind of situation will not occur, which is relatively stable, rather than the problem of temperature difference.
Customers will encounter the problem of blocking the pump with chemicals when using polyaluminum chloride for sewage treatment. The following points need to be considered: first, whether there is a problem in the operation should be considered. Second, pay attention to the dilution ratio of polyaluminum chloride to water. Maybe the problem is the proportion allocation.
At present, conventional water treatment dilutes polyaluminum chloride by fully dissolving it with clean water (tap water), and the ratio of water to polyaluminum chloride is more than 3:1, which turns into liquid. At this time, the concentration of the aqueous solution is relatively high, and then dilute it again in the proportion of 1:10 based on the aqueous solution, so that the pump blockage problem will not occur.
That is, the quality of the product itself, and the alkalinity and water-soluble matter are two indicators to measure the quality of polyaluminum chloride. If the pump is always blocked when adding polyaluminum chloride, it may be that the product produced by the polyaluminum chloride product itself has a low content of water insoluble substances and high alkalinity, and there are many impurities in the product itself, which leads to the pump blocking problem. It is recommended to buy products with high content and purity. In addition, it may also be caused by the excessive moisture of the product and the agglomeration of the product during the production process. It is suggested to slow down the dosing speed on the one hand. On the other hand, it is possible to speed up the mixing speed.
The new type of polyaluminum chloride is to atomize the 40% - 50% content of polyaluminum chloride through the spray tower to form droplets, and then evaporate the water through the drying technology to obtain a granular solid, which is the polyaluminum chloride agent, and its color is golden yellow.
Because the new polyaluminum chloride product is porous particles or hollow particles, using the pressure spray drying technology, the product has excellent flow performance, which makes the product have a large contact area with water, and the speed of purifying water is significantly higher than that of sheet products. In addition, the product has the advantages of wide water area, fast hydrolysis speed, large alum formation, good stability, strong adsorption capacity, fast sedimentation speed, etc.
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