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Why use sodium acetate for sewage treatment
May 08, 2018

At present, the commonly used carbon sources for the treatment of low carbon source sewage are methanol, starch and sodium acetate, in which methanol and sodium acetate are all easy to degrade, and they do not contain nutrients (such as nitrogen and phosphorus), and they do not leave any intermediate products that are difficult to degrade. When starch is a polysaccharide structure, it takes a long time to hydrolyze to small molecular fatty acids, and is poor in solubility in water. It is not easy to dissolve completely in water. It is easy to cause many problems such as residue and sludge floc.

The use of sodium acetate as an external carbon source to solve the problem of insufficient carbon source in low carbon and high nitrogen sewage and to improve the denitrification level of the denitrification stage have been applied in many sewage treatment plants, and a good treatment effect has been obtained. As a result of the fire hazard of methanol, sodium acetate will be more suitable as a carbon source for the construction of some new sewage treatment plants or built sewage plants that have been restricted by land. At present, there are no specific design codes and standards for sodium acetate dosing in China. In the design, we should give full consideration to its properties and dosing characteristics, so as to ensure the safe operation of the sewage treatment plant in the process of denitrification.