Through experiments,the biodegradability of sodium naphthenate was studied in order to reduce its adverse effects on the environment.Using sodium naphthenate at 20 mg/L concentration,the results showed that the optimal biodegradability environment was as follows:aeration rate of 8 L/h,inoculant concentration of 75 mgMLSS/L,biochemical reaction solution pH=7,temperature 25℃ when activated sludge was used as inoculant in the oxygen consumption tank of municipal sewage treatment plant.At this time,the biodegradability of sodium naphthenate for 10 days was 37.11％,and that for 28 days was 69.85％.According to chemical testing guidelines,sodium naphthenate has good biodegradability and carbon emissions are within the prescribed range,so it can be popularized.
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