METHOD OF BIOLOGICAL NEUTRALISATION OF LIQUID HYDROCARBON-CONTAINING WASTES Russian patent published in 2015 - IPC C02F3/26 C02F11/02 C02F101/32 

FIELD: chemistry.

SUBSTANCE: processing of liquid hydrocarbon-containing wastes is carried out in water solution in aerobic conditions with biopreparation, which contains hydrocarbon-oxidating microorganisms in amount1 kg of biopreparation per 10 kg of hydrocarbons. Volume ratio of wastes to water constitutes from 1:4 to 1:50. Then, macroelements - salts of nitrogen, phosphorus, potassium, magnesium and microelements - salts of iron, manganese, copper, zinc are introduced into mixture, mixture is mixed with air supply at temperature from 28°C to 36°C and pH from 4 to 7. 0.5-2.0 vol % of oxygen are supplied together with air. Neutralisation is carried out in presence of polyfunctional catalyst with composition, wt %: manganese oxide 22-26; molybdenum oxide 4-7; chrome oxide 4-5; nickel oxide 3-5, high pressure polyethylene as carrier - the remaining part. After completion of the process, discharge of neutralisation product is realised, with not less than 25% of work suspension volume being left in working reservoir, with the following repetition of the entire cycle of neutralisation without addition of biopreparation. In preferable version loading of catalyst is realised in amount 2-10% of working reservoir volume.

EFFECT: intensification of the process of biological neutralisation of liquid hydrogen-containing wastes due to increased speed of biochemical processes.

2 cl, 1 tbl