How to reduce the insoluble content in drinking water grade polyaluminium chloride?
In the process of using drinking water grade polyaluminium chloride, we often find that there are some insoluble substances more or less. What are these insoluble substances in drinking water grade polyaluminum chloride? Will this affect its water purification capacity? What method can be used to reduce the content of insoluble substances? On these issues, Xiaobian today will do a simple introduction and explanation for you, I hope you can understand.
In the production of drinking water grade polyaluminum chloride, bauxite or bauxite is usually used as raw material. In the manufacturing process, the alumina of the ore is processed into liquid drinking water grade polyaluminum chloride, but some impurities in the ore will be mixed into the drinking water grade polyaluminum chloride solution, such as silicon oxide, calcium silicate, etc. These impurities do not dissolve in acids in drinking water grade polyaluminium chloride and do not form water-insoluble substances.
When the water insoluble content of drinking water grade polyaluminum chloride increases, the water insoluble material used will cause the clogging problem of pipes and equipment. Therefore, the size of the water-insoluble substance of the drinking water grade polyaluminum chloride greatly affects the effect of using the drinking water grade polyaluminum chloride.
How to control the content of insoluble aluminum chloride in water? First, in the raw material screening, you can choose aluminum scrap or high-purity alumina bauxite. Currently, the method of reducing the water insoluble content of drinking water grade polyaluminum chloride is usually through a frame and filter press after long-term precipitation. Most manufacturers use plate and frame filter presses to remove water-insoluble materials from drinking water grade polyaluminum chloride.
The water-insoluble material of drinking water grade polyaluminum chloride generally has a corresponding index, and only drinking water grade polyaluminum chloride products with a composite index are suitable.
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