Key words: coagulant polyaluminum chloride coagulant
Changes in water quality after coagulant dosing
The commonly used coagulants are inorganic salts, which are salts generated by strong and weak alkalis, and after dosing, the changes in water quality: turbidity decreases, alkalinity decreases, and acid groups increase.
In addition to turbidity, alkalinity and acid have little effect on water quality changes, and if it is a polymer coagulant, the water quality basically does not change except for the decrease in turbidity.
However, this does not mean that the effects of coagulants on water quality are limited to these. In some cases, the change in water quality can be more complex after coagulant dosing. For example, when treating raw water with high organic content, coagulants may react with organic matter, resulting in a change in the organic content of the water quality. In addition, factors such as the dosage of coagulant and reaction conditions may also have an impact on water quality.
Therefore, in practical applications, it is necessary to monitor and analyze the water quality changes after coagulant dosing according to the specific situation. For a given raw water quality, the optimal type of coagulant and dosage can be determined through experiments to ensure the best treatment effect and the least impact on water quality.
In addition, it is important to note that the dosing of coagulant may also have an impact on other parts of the water treatment process. For example, the dosing of coagulant may affect the subsequent disinfection effect, biological treatment effect, etc. Therefore, when designing a water treatment process, it is necessary to comprehensively consider the interaction between each link to ensure the stability and effectiveness of the entire process.
In conclusion, the change in water quality after coagulant dosing is a complex issue that needs to be monitored and analyzed on a case-by-case basis. In practice, a combination of factors needs to be considered to ensure that water treatment works best and has the least impact on water quality.