Passability of Chironomid Larvae in Granular Activated Carbon

Cha Young Lee, Jinseok Byeon, Min Kyung Kim, Tae-gwan Lee and Dong Gun Kim
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Cha Young Lee: Institute of Environmental Ecology, Sahmyook University, Seoul 01795, Korea
Jinseok Byeon: Department of Chemistry & Life Science, Sahmyook University, Seoul 01795, Korea
Min Kyung Kim: Institute of Environmental Ecology, Sahmyook University, Seoul 01795, Korea
Tae-gwan Lee: Department of Environmental Science, Keimyung University, Daegu 42403, Korea
Dong Gun Kim: Institute of Environmental Ecology, Sahmyook University, Seoul 01795, Korea

IJERPH, 2022, vol. 19, issue 2, 1-7

Abstract: We conducted an experiment to confirm the passability of chironomid larvae ( Glyptotendipes tokunagai ) in granular activated carbon (GAC) used in water treatment plants. After injecting larvae at different growth stages (first through fourth instars) into circular columns filled with GAC, the number of individuals and their locations within the GAC columns were recorded after 168 h. We found that more than 80% of the injected larvae in the first instar and 3.3% in the second instar passed, whereas none from the third and fourth instars had passed through the column. The second instar larvae were evenly distributed within the column, whereas the third and fourth instar larvae were mostly distributed within 10 cm of the upper layer of the GAC. Our results demonstrate the passability of chironomid larvae in GAC and can be used as basic information for water quality management in water treatment plants.

Keywords: Glyptotendipes tokunagai; granular activated carbon; passability; filtration; backwashing (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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