Summer is a relatively dry season, but there are many rainy seasons this summer. There is a heavy rain every three or five times. The weather after the rain is not necessarily cool, and the moisture is a little muggy. However, polyaluminium chloride is in powder form, which is very easy to dissolve when exposed to the air. Especially in the humid and hot environment, the dissolution rate of polyaluminium chloride(pac) will be affected by moisture, What if polyaluminium chloride dissolves? Can I still use it?
When the humidity in the direct supply air is relatively high, the particles on the surface of polyaluminium chloride have been slightly dissolved after being exposed to the air for about one minute. When you grasp it by hand, you will find that the hands are sticky. During the production of polyaluminium chloride, all workers should wear gloves, long clothes, long sleeves and anti-skid rubber shoes to prevent polyaluminium chloride from sticking to the skin, The dissolution rate of polyaluminium chloride should be fast in the bagging process. The weight of a bag of polyaluminium chloride is 25kg. Workers should pay attention to whether the weight is standard in the bagging process. After reaching the standard, seal the bag immediately to reduce the contact between polyaluminium chloride and air and ensure the drying of polyaluminum chloride to a great extent.
The directly supplied polyaluminium chloride shall be stored in a dry and ventilated place, and shall not be stacked too high, so as not to cause the bottom polyaluminum chloride to be pressed into blocks. The same is true when customers use polyaluminum chloride. If the polyaluminum chloride is deliquescent during use, the deliquescent polyaluminum chloride shall be used first, and a certain amount of water shall be added to the deliquescent polyaluminum chloride, Stir until it is completely dissolved. Some deliquescent polyaluminium chloride is easy to agglomerate into blocks, but it is not easy to dissolve when it is dissolved. In this case, stir more for a while, and add it after it is completely dissolved. Because polyaluminium chloride is an inorganic polymer flocculate and the product has certain stability, the use effect of polyaluminium chloride will not change if it is deliquescent.
Although the use effect of PAC remains unchanged after deliquescence, we should still pay attention to the preservation method of PAC. Powdered PAC is much more convenient than deliquescence PAC.