医科大学, 病院より排出される廃棄物の微生物学的処理に関する研究 : 第4報消毒薬分解細菌の検索, 同定

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In previous papers, the author has described treatment methods for cresol, phenol, formalin, benzalkonium chloride and chlorhexidine using a laboratory-scale submerged fixedfilm reactor and the prototype of a trickling-tower plant. In the present paper, the author has identified and described those bacteria which degrade the disinfectants in the apparatus.The diversity of bacteria species which could be isolated from the treatment liquor declined over time as the bacteria became acclimated to the disinfectants. Ultimately, three large quantities of different rod species were found in the apparatus after the treatment of cresol, two species after that of phenol and one after those of formalin, benzalkonium chloride and chlorhexidine. They were gram negative aerobes and all bacilli belonged to the Pseudomonas group. Pseudomonas aeruginosa could be isolated from the apparatus after treatment of each of the disinfectants. Other isolates (two species after treatment of cresol and one after phenol) could not be identified as far as the species level.
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