METHOD OF BIOLOGICAL TREATMENT OF SEWAGE CONTAINING NITROCELLULOSE Russian patent published in 1995 - IPC

FIELD: sewage treatment. SUBSTANCE: method involves the treatment of oxygen-enriched aqueous suspension of nitrocellulose with microorganisms of genus Pseudomonas, Bacillus at the initial concentrations 10³-10⁴ cells per 1 mg nitrocellulose by calculation for dry matter, at stirring for 15-25 days, at the rate 200-1000 rev/min, at pH value 5.5-7.2, at 30-36 C. Under these conditions the content of dissolved oxygen must be 1-3 mg/l. Microorganisms were used with the sources containing phosphorus, potassium and trace elements. EFFECT: improved method of sewage treatment. 1 tbl