With the development and improvement of the current industry, the water quality of industrial wastewater has changed greatly, resulting in the emergence of new problems in the treatment. The common problems are the foam produced by polyaluminum chloride in the water and the blockage of the pump by chemicals.
The reason why polyaluminum chloride is put into water to produce foam is that the foam produced by adding polyaluminum chloride in water treatment 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 caused by temperature difference.
When customers use polyaluminum chloride for sewage treatment, they will encounter the problem of blocking the pump with chemicals. The following points need to be considered: first, whether there is a problem in the operation; second, pay attention to the dilution ratio of polyaluminum chloride and water. Perhaps the problem is the proportion allocation.
That is, the quality of the product itself, and the basicity and water-soluble matter are two indicators to measure the quality of polyaluminum chloride. However, if the pump is blocked during dosing of polyaluminum chloride, it may be that the product produced by the polyaluminum chloride product itself has low content and too high water-insoluble substances and alkalinity, and the product itself has many impurities, resulting in the problem of pump blocking. It is recommended to purchase products with high content and high purity. In addition, it is also possible that the product moisture is too large and the product is agglomerated 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 stirring speed.
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