[pp.59-64]
Daisuke KISHINA, Shouki OHMORI, Sayaka USUBA, Iwahito TAKAHASHI and Yoshinori OHSAWA (Japan Association of Environment and for the 21st Century / Department of Environmental and Civil Engineering, Joetsu ge)
Abstract:
This study shows that actinomycete was separated from soil in order to treat concentrated wastewater by no dilution, and effective strains were identified based on the comparison of proliferating and metabolizing ability. Moreover, it was found that the treatment capacity of concentrated wastewater by an immobilized carrier which contained the effective strain of sodium alginate-acrylamide resulted in a decrease in foaming. In addition, there was an improvement in the efficiency of solid-liquid separation and in the treatment of wastewater by the condensation of the strain. As a result of isolation culture, twenty-six separated strains were obtained in the soil sampling. It was found that isolation strain 07A1 was an effective strain suitable for concentrated wastewater treatment. It was accepted that the treatment capacity of concentrated wastewater by the strain 07A1. It was confirmed that oxygen consumption increased with the treatment of the concentrated wastewater. The result of a measurement of the DO profile in the carrier showed that there was not DO in the 2.0mm inside the carrier surface. From this, it can be said that the suitable diameter of carrier is less than 0.4mm.
Key Word:
actinomycete strain, immobilization method, concentrated wastewater treatment