FLOOD-PLAIN SLUDGE POND FOR INDUSTRIAL WASTE Russian patent published in 2006 - IPC E02B3/16 E02B7/06 

FIELD: hydraulic structures, particularly to store industrial waste in flood-plains.

SUBSTANCE: sludge pond comprises ground basin defined by enclosing structure, trench arranged at sludge pone base between the enclosing structure and river, protective dam located between trench and river. Ridge of protective dam extends over maximal predicted level of water in river. Impervious protective dam member closes water-permeable layer at base thereof and is connected with aquiclude at dam depth. Trench bottom is below everyday water level in river. Trench interior communicates with water recycling system of industrial plant by water supply system. The sludge pond may be provided with drain arranged in waste and spaced from base. The drain extends along enclosing structure and is provided with vertical spaced apart water conduits. Upper end of each water conduit is hydraulically communicated with drain, lower one is communicated with water permeable base layer. Protective dam ridge height is selected from V_e≥V_d, where V_e is volume of emergency ground basin defined by protective dam, V_d is calculated volume of liquefied waste discharge from sludge pond in river direction. Drain may be formed as drainage band provided with drainage pipe. Impervious layer is created at drain base.

EFFECT: increased reliability of waste storage and decreased risk of underground water pollution.

4 cl, 3 dwg