A rain garden or bioretention cells was depressed areas which contain a porous backfill beneath the surface vegetation. Often, this area has the underdrain to encourage infiltration and filtration, especially in the clay soil. Bioretention cells give the elimination of pollutants, groundwater recharge and runoff containment. They are an effective solution in an urban area or a parking lot, where green space is limited.
Gutters and sidewalks elimination
Gutters and sidewalks transport stream very quickly to drain the rainwater without allowing for the elimination of pollutants or infiltration using a filter inlet. Eliminating gutters and sidewalks can reduce the volume of runoff and increase the flow sheet. Maintaining the flow sheet by removing gutters and sidewalks overflow basins to vegetated swales bioretention and helps to prevent soil erosion by rainwater also helps to maintain the hydraulic conditions (pre-development). A level spreader, which is designed to change the channel runoff concentrated into a stream of pieces and distribute evenly across the slopes, can also be incorporated to prevent soil erosion.
They are shallow outlet covered with grass that helps to slow the runoff while facilitating infiltration. Sustainability grassy swales depending on soil type, land use, imperviousness of the watershed that contributes, and the slopes and grassy swales dimensional systems. grassed swales can be used to manage runoff from the drainage area less than four hectares. It is encouraging that you use natural lowland areas and natural drainage program must be utilized.
green park design
This, when applied together, reducing the total contributions parking enclosure. green park design techniques including minimizing the dimensions of the parking space, set the maximum number of parking spaces, utilizing alternative pavers in a crowded parking area, take advantage of the area to treat stormwater bioretention and incentives for structured parking.
They are rock-filled trenches without channels. This ditch collects runoff when there is a storm and release it into the ground through infiltration. This trench may be used in conjunction with other devices intended for the infiltration of rain water using filter inlet. This will provide damping peak flow and water quality control. Runoff that contains high levels of hydrocarbons or sediment that could clog the outlet may need to be pre-treated using other techniques such as inlet water quality.
Inlet protection devices
It is also known as hydrodynamic separators and structure of the flow-through with the separation or settling unit to remove oil, trash, grease, etc. You can use this technology for pre-treatment of the other inlet protection devices. They are generally used in areas of potential stormwater, where there are high concentrations of pollutants.
They promote groundwater recharge. Some sidewalks are used to create a void in the corners of the pavers.