Waste water treatment system after washing of metro rolling stock
- Added: 03.07.2014
- Size: 9 MB
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Thin layer sump.
In the practice of water treatment for preliminary clarification of water before
by entering its fast filters apply horizontal, vertical,
radial and thin-layer settling tanks. The name of the settling tanks is given in accordance with
the direction and nature of the movement of water in them. Among intensification methods
water impurity deposition process is one of the most promising
settling in a thin layer. Its essence lies in laminarization of water flow
(Re = 60... 80), in which the influence of the weighing component is eliminated. In Russia and
various designs of thin-layer settling tanks with
using plastics, fiberglass and other materials that provide
easy sliding and removal of sediment from the surface. In thin-layer structures
clarification, slurry deposition flows in a small layer of water formed by the device
inclined elements providing quick release of suspension and its sliding along
inclined surface of elements into zone of flapping and sedimentation.
Decreasing the flow height reduces the specific load on the settling area,
which entails a reduction in the amount of motion of the liquid carried by the particles,
higher stability of hydrodynamic structure.
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