Abstract
This paper introduces the action mechanism of PAM chemical and the influencing factors of PAM dosage for sludge dewatering in municipal sewage treatment plant, and the PAM dosages of several sewage treatment plants is analyzed. It is found that the chemical dosage of sewage treatment plant with high concentration of inlet water is more than that with low concentration when the same belt pressure filter were used, and meanwhile the chemical dosage with belt pressure filter is more than that with centrifuge dewatering equipment under the premise of the same inlet water quality. When the temperature is low, the chemical dosage is more than that when the temperature is high in the same sewage treatment plant. According to the level of temperature and the differences in influent water quality and dewatering equipment, the operators of municipal sewage treatment plant could select the appropriate model of chemical and optimize the chemical dosage to reduce costs in the production process, through the refinement of management and adjustment of equipment parameters in time.
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