IRRIGATION SYSTEM FOR SEWAGE WATER IRRIGATION ON LOW SLOPES Russian patent published in 2004 - IPC

FIELD: agricultural engineering, in particular, sewage water irrigation equipment.

SUBSTANCE: irrigation system has supply pipeline. Sewage water is delivered through supply pipeline into mechanical purification construction and further into double-sectioned accumulating tank to be diluted with pure water in the ratio of 1:3. Diluted sewage water is supplied via distribution channel into irrigator and further via stationary irrigation pipes into irrigation furrows for flooding thereof. Stationary irrigation pipes are positioned on irrigator dam in spaced relation with respect to one another, said space ranging from 0.6 m to 0.9 m, depending on slope of irrigation level. For irrigation of continuous seeding farm crops on irrigation level with gradient of 0.004-0.007, width of flow-through irrigation furrow bottom is from 0.13 m to 0.15 m, width of flow-through furrow top part is from 0.23 m to 0.25 m, depth is from 0.10 m to 0.12 m, and width of spacing is 0.60 m. In irrigation zone with gradient i ≤ 0.004, flow-through irrigation furrow has bottom width of from 0.23 m to 0.25 m and top width of from 0.33 m to 0.35 m, depth of from 0.09 m to 0.11 m and width of spacing of 0.90 m. It allows irrigation stream horizon to be above furrow ridge by 0.02 m to 0.03 m. Such system allows irrigation norm to be reduced by 2-3 times for irrigation of continuous drilling crops on irrigation zones with gradient below 0.007. As a result, sewage water is localized only within active layer of ground.

EFFECT: uniform wetting of crop root system of narrow row crops, especially at the initial germination stage, reduced consumption of deficit irrigation water and improved ecological safety for environment.

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