Storm Water and Contamination Control Efficiency Evaluation for Construction of a Neighborhood Project Using Low Impact Development

Bing Liu,Xiaoming Zhang,Yang Zhao,Xiaolin Yin,Yousheng Wang,Gang Xie,X Lei,Y Yu,H Li,S Cai

doi:10.1051/matecconf/201824601068

Abstract

Urban flooding and water pollution are urgent problems to be solved in urban development. The improvement of urban drainage and water quality in urban construction using ecological measures is an important research task. Low impact development (LID) is a new concept in soil and water conservation aimed at improving urban rainwater use and reducing non-point source pollution. This paper discusses the best management practices (BMPs) related to storm water and contamination control efficiency by comparing pre-development and post-development neighborhoods (both conventional and LID designs). The study area was Weatherford, Oklahoma, United States. The results showed that conventional design had the lowest total runoff but highest peak rate, infiltration trenches with rain barrels were more efficient than bioswales, and the use of LID design would reduce total runoff and peak rate significantly. However, LID design would increase construction and annual maintenance fees.

Highlights

With the rapid development of production and construction activities and the improvement of people's living standards, cities are facing environmental problems brought about by urbanization, such as water pollution, water stress, flood disasters, etc. [1] The increase in urban hardened areas, the reduction of lake wetlands, and the filling and excavation of river channels have all caused serious urban internal defects
low impact development (LID) Option #1 had the highest total runoff. These results indicate that a dry detention pond can reduce total runoff efficiently, and that infiltration trenches can reduce total runoff better than bioswales
The results indicate that a dry detention pond would reduce peak rate significantly for small rainfall events, but has a reduced effect in more severe rainfall events

Summary

Introduction

With the rapid development of production and construction activities and the improvement of people's living standards, cities are facing environmental problems brought about by urbanization, such as water pollution, water stress, flood disasters, etc. [1] The increase in urban hardened areas, the reduction of lake wetlands, and the filling and excavation of river channels have all caused serious urban internal defects. With the rapid development of production and construction activities and the improvement of people's living standards, cities are facing environmental problems brought about by urbanization, such as water pollution, water stress, flood disasters, etc. The increase in impervious areas increases total runoff and flood peak runoff, and causes non-point source pollutants to accumulate on the hardened surface [4]. In 2000, the US Environmental Protection Agency published a review of LID, and since a large number of studies on LID have been carried out in the United States [6]. The Jordan Cove Urban Watershed Project in the United States has established a large LID experimental area in Waterford, Connecticut, including 17 traditional soil and water conservation measures and 12 LID measures. The main measures of LID are bioretention ponds, roof greening, permeable pavement, rainwater storage tanks, soil improvement, and three-box filtration

Methods

Results

Conclusion