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A Study on the Determination of Biedegradabllity of Polluted Organic Substances Using Prduction or Carbon Dioxide Test

Jiang Zhanpeng et al.(Dept.of Environ.Eng.,Tsinghua University,Beijing 100084)  
In this paper,a rational PCD test for determining biodegradability of organic substance under aerobic conditions was established.The volume of bioreactor is 2 L,the concentration of organic substance is 100 mg/L(as DOC),the amount of the inoculum is 500 mg/L(as MLSS),the temperature is 25℃,the duration of test time is 14 days.Index of biodegradation(IB)was elaborated through analysis of biedegradability of organic substances, 23 organic substances were studied with this PCD test, and their indexes ofbiodegradation were calculated.A classification of biodegradability of the organic substances according to the indexes of biodegradation was suggested.
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