Environment-friendly type roads rain inlet

Abstract

The invention discloses an environment-friendly road gully, which comprises a rain grate and an inner space under a roadway. A filter basket is arranged under the rain grate. The rainwater runoff enters the filter basket under the rain grate after being preliminarily intercepted of larger filth by the rain grate and enters the inner space after being filtered by the filter basket. The inner space is divided into two parts, a larger one and a smaller one. The larger space therein is a closure space and the smaller space therein is an overflow space, the both of which are separated by an overflow weir. When the runoff volume is smaller than the runoff volume in the early period, the rainwater is fully intercepted in the gully, percolated into the surrounding soil through a permeable facility at the bottom and naturally emptied. When the runoff volume is larger than the runoff volume in the early period, the runoff in the later period overflows into a overflow space at the end through the overflow weir and discharges downstream through pipes. In combination of grating filtering, interception of the runoff in the early period and removing automatically, and interception of flotage, the gully not only intercepts most contamination in the ground runoff, but also guarantees smooth collection and discharge of the rainwater, which has remarkable ecological environment, economic and social benefits.

Description

1. Technical field [0001] The invention relates to an environment-friendly gully for draining or collecting road rainwater, belonging to the fields of water conservancy engineering and environmental engineering. 2. Background technology [0002] The gully is the entrance for ground rainwater to enter the stormwater pipeline. The traditional rainwater outlets in our country, no matter single grate or double grate, discharge ground rainwater directly into downstream rainwater pipes. Only the rain grate above the rainwater outlet can intercept large pollutants such as leaves and plastic bags, and there is no purification measure for rainwater. Studies have shown that the concentration of urban road runoff pollutants SS, organic matter and heavy metals is basically the same in order of magnitude as that of untreated urban domestic sewage, and the concentration of suspended solids in some road runoff, especially initial rainwater runoff, is even far greater than the concentratio...

AI Technical Summary

Problems solved by technology

The rainwater outlets in Germany have a hanging basket under the rain grate, with holes in the side wall, which can further intercept smaller-sized pollutants, but have almost no interception and disposal effect on suspended solids, other pollutants, and initial runoff

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