Treatment of hypersaline-containing wastewater with salt-tolerant microorganisms.
Two salt-tolerant bacteria were isolated from soil samples to treat a high-salt-content wastewater from a pickled plum production plant. The strains, which were identified as Staphylococcus sp. and Bacillus cereus, grew well in a medium containing 0 to 15% NaCl. When wastewater in a flask was treated with the strains for 72 h, the COD removal was about 70%, and this was increased to about 90% when they were used in a pilot plant (working volume 1 m3) in a batch culture carried out for 7 d. The Staphylococcus sp. and Bacillus cereus strains occupied almost all of the pilot plant, in which they were present in a ratio of 3:1 (at 23-27 degrees C).
Kubo
M
M
Department of Bioscience & Technology, Faculty of Science & Engineering, Ritsumeikan University, Nojihigashi, Kusatsu, Shiga 525-8577, Japan. kubo@se.ritsumei.ac.jp
Hiroe
J
J
Murakami
M
M
Fukami
H
H
Tachiki
T
T