| 摘要 |
1,243,784. Sewage treatment. NOVO TERAPEUTISK LABORATORIUM A.S. 20 Sept., 1968 [3 Oct., 1967; 26 July, 1968], Nos. 45046/67 and 35921/68. Heading C1C. [Also in Divisions C3, C5 and C6] Enzyme preparations, which can be utilized in treating sewage as an additive to septic tanks and installations for purifying sewage, contain at least one proteolytic enzyme of the serine type produced by cultivation of species of the genus Bacillus and exhibiting optimal proteolytic activity against haemoglobin in the presence of urea, at a pH above 9.
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