The utility model provides a rainwater
sedimentation and seepage tank for a
transformer substation. The rainwater
sedimentation and seepage tank comprises a desilting basin, a
sludge discharge well and a seepage tank, the grit chamber is communicated with rainwater output by the
transformer substation through a water inlet
pipe, the settled rainwater is input into the
water seepage tank, and settled
silt is discharged into the
sludge discharge well; the bottom of the grit chamber is connected with a
sludge discharge pump in the sludge discharge well through a sludge discharge
pipe, and the sludge discharge well collects and discharges
silt output by the sludge discharge pump; the upper part of the inner wall of the grit chamber is communicated with the
water seepage tank; a grit cover plate is arranged at the top of the grit chamber; a
water seepage cover plate capable of opening and closing the water seepage tank is arranged at the top of the water seepage tank. The desilting basin is arranged in front of the water seepage basin,
sediment sedimentation is facilitated, and the
water quality of inlet water of the rainwater water seepage basin is greatly improved. Under the
weather condition of sunny days, the water seepage tank can be opened to increase the rainwater
evaporation capacity, and rainwater is prevented from overflowing outwards in rainy seasons. The problem that a traditional rainwater seepage
pool has a good water seepage effect in the early stage of substation construction is solved. And in the operation process for many years, the desilting and
silt settling effects are not achieved.