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DOI : , Vol.19, No.2, 45 ~ 56, 2011
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| Title |
| A Evaluation of INT-Dehydrogenase and OUR Tests: Effects of Substrates Types and Microorganism Species |
| 추연덕 Yeon Duk Choo , 신관우 Gwan Woo Shin , 김금용 Keum Yong Kim , 류홍덕 Hong Duck Ryu , 이상일 Sang Ill Lee |
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| Abstract |
| This study was aimed to evaluate the INT-DHA and OUR tests in which the effects of substrate types and microorganism species were investigated. In OUR test, the activity of activated sludge was more affected than in INT-DHA test when organic matters were used as substrates. In addition, the substrate types affects on the activity of activated sludge in their tests. In the utilization of ammonia as a substrate, the INT-DHA test was not fit to asses the activity of activated sludge and nitrifiers, whereas the OUR test was available for assessment of nitrifier`s activity in the specific ammonia concentration range. For the INT-DHA test, it was revealed that the utilization of mixed substrates, in which organic carbon and ammonia was mixed, was not desirable to determine the activity of activated sludge and nitrifiers, whereas it can be recommended in the OUR test. |
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| Key Words |
| INT-DHA, OUR, activated sludge, nitrifiers, substrate |
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