FIELD: household waste waters purification; methods and devices for household waste waters purification.
SUBSTANCE: the invention is pertaining to the method of purification of the household waste waters by the combined biochemical methods, which has the wide range of advantages in usage, in particular, it can be used in the isolated houses and the small settlements. The waste water is delivered into the receiving reservoir, then the water subjected to purification is pumped over into the aerotank, then - into the secondary settling tank and after that the water from the secondary settling tank flows over into the outlet reservoir. In the receiving reservoir the water is circulated being subjected to the action of the active sludge and the small-bubble aeration of the variable intensity. In the aerotank there is the upright- radial circulation of the mixture of the water and the active sludge around of the settling filter. In the secondary settling tank the trapping of the pop-up particles takes place. Then the water is passing with the additional filtration through the wet self-stripped sand filter, then from it the purified water is pumped over into the outlet reservoir, where the water is subjected to the ozone afterpurification and disinfection and the part of the ozonized water is delivered for circulation through the secondary settling tank and the sand filter and with the additional feeding of the ozonized water into the receiving reservoir and the aerotank. At that during the whole process the main airlifts are flushed. After the ozone additional purification exercise the purified water pressure discharge outlet. The technical result of the invention is intensification, improvement of the quality and reliability of the purification process due to application of the water upright-circular circulation and organization of process with availability of the phase of the afterpurification and the self-acting flush of the key components.
EFFECT: the invention ensures intensification, improvement of the quality and reliability of the purification process.
4 cl, 1 dwg
