FIELD: agriculture.
SUBSTANCE: invention relates to the field of environmental protection, particularly to the preparation of wastewater in irrigated agriculture for irrigation and fertilization of plants, in water protection measures, the distribution of wastewater and livestock wastes in the system of irrigation from the distribution pipelines to the agricultural fields of irrigation (AFI). The method consists in aeration of livestock wastes in a closed water area in the form of a storage pond 1 with an area of silt accumulation from liquid effluents. The storage pond 1 is a water area with a levee along its perimeter. The surface area of the pond 1 on the water area of the dams is divided into working installations with fixing the racks 2, on which the water discharge pipeline 3 and the discharge air duct tube 4 are mounted. Regulation of water and compressed air consumption are provided by the regulators in the form of valves 10 and 11. The aerators 5 in the form of sprinkler units are supplied with a nozzle 6 which is directed at an angle up towards the surface area of the storage pond 1. The water discharge pipeline 3 is mounted to the pump station 7 on the dam of the pond 1 with a tank 8 filled with clean water. The discharge air duct tube 4 is also mounted with a source 9 of compressed air (compressor) and is placed on the dam of the storage pond 1. The discharge air duct tube 4 is connected to the aerator 5 by a flexible hose 12. As a result, under the influence of pressure jets and the created vacuum in the diffuser of the aerator 5 the compressed air suction is carried out from the air duct tube 4, and the water-air mixture is formed as rain over the area of the wastewater surface in the zone of the storage pond 1, which provides contact from above over the cloud of biogas rising over the area of the pond surface. Livestock wastes are additionally diluted with clean water mixed with oxygen at the compressed air supply. The active mass of the surface sludge is also diluted to a certain proportion, which facilitates the process of intake of such diluted wastes in the discharge conveying pipe for AFI.
EFFECT: invention provides effective protection of wastewaters against biogas rise to the atmosphere over the area of the pond surface, and simultaneously contributes to decontamination of wastewater by feeding for AFI The structure of the aerator enables to mix water and air due to the water-air compound of their mixture and to supply to the surface of the pond area in the form of rain.
2 dwg
