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- Title
Effects of nitrolotriacetic acid-copper complexes on activated sludge process
- Authors
Wong, P. K.
- Abstract
Effects of nitrilotriacetic acid (NTA), copper ion (Cu2+)and their complexes on the efficiency of activated sludge process were evaluated by determining the changes in physical and chemical parameters in a laboratory-scale unit. Primary effects of these toxicantson microorganisms in the activated sludge process were also evaluated by determining the change of in vivo dehydrogenase activity. The presence of 1 mg L-1 or higher of Cu2+ significantly affected the activated sludge process. Nitrification in the activated sludge process was more sensitive to the inhibition of Cu2+. The presence of NTA, as high as 20 mg L-1, did notsignificantly affect the activated sludge process. Moreover, in the presence of 20 mg L-1 of NTA, the toxicity of Cu2+ on the activated sludge process was significantly reduced.
- Subjects
COPPER; SEWAGE sludge; WASTEWATER treatment
- Publication
Water, Air & Soil Pollution, 1999, Vol 110, Issue 3-4, p379
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1023/A:1005013615897