| 摘要 |
FIELD: purification of household sewage. ^ SUBSTANCE: the invention is pertaining to purification of household sewage. The method provides, that originally carry out purification by a flotation and coagulation with application of an activated charcoal at values of pH of initial water. After that carry out filtration in a sour medium through a loading out of an iron compact material at pH 5, filtration in an alkaline medium through a layer of a ground silicate lump with the following aeration at pH 9 and heating of water by 15°C irrespective of temperature of the initial water, which parameters are between 5°C - 75°C. The purification is finished by filtration in an alkaline medium through a layer of aluminum chips at pH 9. After each filtration it is necessary to carry out the corresponding concretion with a coagulant inherent only to it and at the counter acid-base indices of the filtrate and the coagulant. The method ensures an increase degree of purification of the economic - household sewage from nitrogen-carrying contaminants up to the maximum permissible concentration without use of a bioassay technique. ^ EFFECT: the invention ensures an increase degree of purification of the economic - household sewage from nitrogen-carrying contaminants to the maximum permissible concentration without use of a bioassay technique. ^ 1 ex |
