HYDROTECHNICAL AMELIORATION SYSTEM Russian patent published in 2004 - IPC

FIELD: agriculture, in particular, utilization of drainage water in land irrigation. SUBSTANCE: hydrotechnical amelioration system has irrigation and drainage mains, drainage collector connected to demineralization unit, and plots for utilization of drainage water. Drainage water demineralization unit is made in the form of hermetically sealed chamber communicated with collector and arranged in parallel therewith. Said chamber is divided by water-permeable screen into two sections, with first section being filled with containers comprising filtering material having increased absorbing capacity and second section being joined to vacuum system distribution pipeline adapted for subsurface irrigation and arranged downstream of said chamber on said plots gradient. Vacuum system distribution pipeline may be connected to irrigation main pipeline and drainage collector may be communicated with hermetically sealed chamber via perforated pipe arranged above surfaces of containers comprising filtering material. EFFECT: reduced consumption of power for collecting and repeated supplying of drainage water into pressure irrigation main. 3 cl, 2 dwg