FIELD: agriculture.
SUBSTANCE: method of washing of saline soils comprises a source 1, a distributor 2, a water discharge 3, an upper tier of drains-humidifiers 4 combined by the pipeline-collector 5, a lower tier of drains-dryers 7, the drains-distributors 6 placed between the tiers of drains parallel to the drains-humidifiers 4 and connected to the pipeline-collector 5, the collector 8 with a check valve. The drains-distributors 6 have additional manholes 9, into which the vertical pressure pipes are inserted for feeding water and compressed air simultaneously after the termination of desalinization of topsoil followed by washing of the drains-distributors 6. A pressure pipe is supplied with an ejector, the active nozzle of which is connected to the mixing chamber oriented with an outlet portion along the water flow. The second mixing chamber is formed with a diffuser, one end of which is connected to the first mixing chamber, the second is connected to the drains-distributor at an angle toward it to the side of the collector. The ejector with the first mixing chamber is connected to the air tube. The check valves are mounted on the end of the water supply pipeline and the end of the supply tube of compressed air. The upper part of the air supply pipe is connected with a source of compressed air. When filling the drains-distributors 6 with pressurized water, all the salts are washed away with the air located there under great pressure, i.e. from source to mouth the formation of blockages in drains and ochring are avoided. Such a device for obtaining in motion of a water-air salt stream fills the entire cross section along the length of the drain. The cleaning process is accelerated when flushing, and the life of drainage is extended by the action of water-air mixture on the depositions throughout the entire period of operation.
EFFECT: method has increased operational reliability.
3 dwg
