When water treatment in waterworks, people used PAC to treat water, because it is a new type of inorganic polymer flocculant, which has the functions of sterilization, deodorization, decolorization, defluorination, oil removal, turbidity removal, heavy metal salt removal and so on. If PFS is used in waterworks, can it replace PAC? What are the advantages and disadvantages?

   waterworks use polymeric ferric sulfate instead of PAC. Polymeric ferric sulfate is a kind of water purification product with high speed and strong adaptability, which can replace aluminum salt for water treatment and disinfection of residual aluminum pollution. Therefore, poly iron can replace PAC, and it can reach GB drinking water standard after treatment. Polyaluminum chloride contains aluminum element. After treatment with polyaluminum chloride, aluminum ion in water will increase, which can accumulate in the body after entering the human body. Long term intake can harm human nervous system, liver and kidney function, and accelerate the aging of human brain tissue. In addition, the treatment effect of aluminum salt coagulant at low temperature, low turbidity or high turbidity is too ideal, and the cost of water production is relatively high It is characterized by low consumption, low cost, high efficiency, wide range of turbidity and pH value of raw water, good decolorization effect and good dehydration.

Polyaluminum chloride contains aluminum element. After treatment with polyaluminum chloride, aluminum ion in water will increase, which can accumulate in the body after entering the human body. Long term intake can harm human nervous system, liver and kidney function, and accelerate the aging of human brain tissue. In addition, the treatment effect of aluminum salt coagulant at low temperature, low turbidity or high turbidity is too ideal, and the cost of water production is relatively high It is characterized by low consumption, low cost, high efficiency, wide range of turbidity and pH value of raw water, good decolorization effect and good dehydration.

 with the improvement of water treatment technology, polyaluminum chloride was used to treat tap water, but now it can be replaced by highly efficient PFS. But the general water treatment plant, no matter the use of PAC or poly iron, the supplier is required to provide a water related health license when purchasing, so as to ensure that the product can be used safely and will not harm the human body.

The basicity and total iron content of    PFS directly determine the flocculation effect, and they are two decisive indexes to measure its quality. If the content of total iron affects the amount of high valence charges and polynuclear ions produced by PFS dissolved in water and its adsorption strength, then the basicity is another major factor affecting the acidity and basicity of water and the quality of alum.