WASTE WATER SUBSURFACE IRRIGATION SYSTEM Russian patent published in 1999 - IPC

FIELD: agriculture, in particular, recovery of waste water including livestock wastes. SUBSTANCE: system has waste water source, distribution and irrigation pipelines and local sprayers. Irrigation pipelines are formed as pipe sections adapted for connecting local perforated sprayers and laid in inclined position, with inclination extent exceeding 0.03. Diaphragm mounted at inlet end of each pipe section has air pipe projecting from soil surface. Perforated sprayer has closure and moisture-impermeable screen. System of such construction provides increased rate of oxidation of slit suspension, reduced risk of slitting pipelines and local sprayers. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 dwg