Monitoring and Evaluating Rainfall–Runoff Control Effects of a Low Impact Development System in Future Science Park of Beijing

2021 ◽  
Author(s):  
Hongbin Shen ◽  
Zongxue Xu
Keyword(s):  
Low Impact Development ◽  
Rainfall Runoff ◽  
Science Park ◽  
Development System ◽  
Future Science ◽  
Runoff Control

A Conceptual Tank Model for Urban Storm Water System

2013 ◽  
Vol 777 ◽  
pp. 430-433
Author(s):  
Xing Po Liu
Keyword(s):  
Low Impact Development ◽  
Water System ◽  
Storm Water ◽  
Rainfall Runoff ◽  
Sewer System ◽  
Tank Model ◽  
Objective Model ◽  
Principles Of Design ◽  
Urban Storm ◽  
Storm Sewer

In order to cope with urban flooding, water scarcity and rainfall-runoff pollution comprehensively, a conceptual tank model of urban storm water system is proposed. Tank model is a multi-layer, multi-objective model, so design of urban storm water system is more complex than that of urban storm sewer system. Some principles of design of urban storm water system are discussed, such as Low Impact Development, Smart storm water management, and so on.

scholarly journals A comparative study on rainfall runoff control indicators of green roof

2020 ◽  
Vol 20 (6) ◽  
pp. 2036-2042
Author(s):  
Ke Zhou
Keyword(s):  
Comparative Study ◽  
Green Roof ◽  
Reduction Rate ◽  
Green Roofs ◽  
Mean Value ◽  
Rainfall Runoff ◽  
Control Effect ◽  
Runoff Reduction ◽  
Runoff Control ◽  
Reduction Effect

Abstract The rainfall runoff reduction effect on green roofs was analyzed and tested by comparative rainfall runoff monitoring on impermeable roofs (sloping, plane). The evaluation index of rainfall runoff interception benefit (relative runoff reduction rate, rainfall control rate) on green roofs was studied. The results show that compared with sloping and level roofs, the change range of green roof runoff reduction rate relative to level and sloping roofs is 20.0–98.3% and 3.8–92.3%, and the mean value is 48.4% and 34.3% respectively. It is obvious that the green roof has better rainfall runoff reduction effect. It can be seen from the single rainfall control effect that the variation range of green roof rainfall runoff control rate is 36.0% to 99.0%, and the total rainfall control rate is 57.6%, which reflects that the green roof has the better rainfall control effect. Through comparative study, it can be concluded that the rainfall runoff control rate is more suitable for the design index of green roofs.

Nutrient retention by different substrates from an improved low impact development system

2019 ◽  
Vol 238 ◽  
pp. 331-340
Author(s):  
Junjie Zhou ◽  
Xinqiang Liang ◽  
Shengdao Shan ◽  
Dawei Yan ◽  
Yanfeng Chen ◽  
...  
Keyword(s):  
Low Impact Development ◽  
Nutrient Retention ◽  
Development System

scholarly journals Analyses Of The Hydrologic Performance Of Bioretention Facilities

2021 ◽  
Author(s):  
Seyed Amirali Alinaghian
Keyword(s):  
Primary Objective ◽  
Effective Length ◽  
Rainfall Runoff ◽  
Design Storm ◽  
Right Of Way ◽  
Bioretention Cell ◽  
Significant Interest ◽  
Outlet Flow ◽  
Runoff Control ◽  
Swmm Model

Due to urbanization, and replacing natural pervious lands by impermeable surfaces, the patterns of rainfall-runoff are altered and thus, negatively influence natural water systems regarding both water quantity and water quality. Bioretention as an efficient LID practice has received significant interest in the recent years. Bioretention practice due to its advantages can be considered as one of the most promising LID practices that maintains the fundamental hydrologic functions in a natural environment and can be integrated into neighborhood landscaping. The primary objective of the current study is analyzing the effects of inflow and outflow characteristics on right-of-way (roadside) bioretention facilities. Inlet and outlet flow hydrographs under several design storm conditions were examined. After the formulation of a SWMM model (node and link plus LID), numerical experiments including sensitive analysis will be designed to simulate and investigate the runoff control performance of a right-of-way bioretention facility. The effective length of the bioretention was found by FLOW3D software (finite element). The performance of the bioretention cell with the effective lengths (12 &16m) reinvestigated and results compared to original bioretention cell

scholarly journals Research on the schemes formulation and optimization method of sponge reconstruction in a highway service area

2020 ◽  
Vol 82 (12) ◽  
pp. 2889-2901
Author(s):  
Yu-hua Peng ◽  
Zhuang Li ◽  
Yong-shuai Ding
Keyword(s):  
Evaluation System ◽  
Low Impact Development ◽  
Optimization Method ◽  
Service Area ◽  
Utilization Rate ◽  
Analytic Hierarchy ◽  
Total Runoff ◽  
Functional Zoning ◽  
Control Goal ◽  
Runoff Control

Abstract This study proposed a method for constructing a low impact development (LID) plan to improve the utilization rate of rainwater in a highway service area and solve the problem of waterlogging. Firstly, based on the theory of LID, taking the total runoff as the control goal, and combining it with the functional zoning of the highway service area and the characteristics of LID facilities, several LID schemes were proposed. Then, the evaluation system of the LID scheme in service area was established by the analytic hierarchy process (AHP). These preliminary construction schemes were compared from three aspects (runoff control efficiency, economic efficiency and social efficiency) to determine the best LID plan. Finally, taking the Pu'er tunnel service area as an example, the construction scheme of the sponge city service area was optimized.

scholarly journals Analyses Of The Hydrologic Performance Of Bioretention Facilities

2021 ◽  
Author(s):  
Seyed Amirali Alinaghian
Keyword(s):  
Primary Objective ◽  
Effective Length ◽  
Rainfall Runoff ◽  
Design Storm ◽  
Right Of Way ◽  
Bioretention Cell ◽  
Significant Interest ◽  
Outlet Flow ◽  
Runoff Control ◽  
Swmm Model

Due to urbanization, and replacing natural pervious lands by impermeable surfaces, the patterns of rainfall-runoff are altered and thus, negatively influence natural water systems regarding both water quantity and water quality. Bioretention as an efficient LID practice has received significant interest in the recent years. Bioretention practice due to its advantages can be considered as one of the most promising LID practices that maintains the fundamental hydrologic functions in a natural environment and can be integrated into neighborhood landscaping. The primary objective of the current study is analyzing the effects of inflow and outflow characteristics on right-of-way (roadside) bioretention facilities. Inlet and outlet flow hydrographs under several design storm conditions were examined. After the formulation of a SWMM model (node and link plus LID), numerical experiments including sensitive analysis will be designed to simulate and investigate the runoff control performance of a right-of-way bioretention facility. The effective length of the bioretention was found by FLOW3D software (finite element). The performance of the bioretention cell with the effective lengths (12 &16m) reinvestigated and results compared to original bioretention cell

The role of in situ unit operation/process infiltration treatment on partitioning and speciation of rainfall-runoff

2006 ◽  
Vol 54 (6-7) ◽  
pp. 255-261 ◽  
Author(s):  
T. Guo ◽  
J. Sansalone ◽  
P. Piro
Keyword(s):  
Unsaturated Flow ◽  
Unit Operation ◽  
Rainfall Runoff ◽  
Metal Elements ◽  
Operation Process ◽  
Runoff Control ◽  
Event Based ◽  
Carbonate Complexes

Management decisions regarding the potential fate and toxicity of anthropogenic metal elements requires a knowledge of metal partitioning and speciation as mediated by in situ control systems (ICS). This study focussed on Cd, Zn, Cu and Pb, common anthropogenic metal elements generated in the built environment and examined the influence of variable event-based hydrology and passive ICS by an engineered partial exfiltration reactor (PER) system on partitioning and speciation. The feasibility and efficiency of the PER as an in situ stormwater runoff control strategy to attenuate levels of metal elements was evaluated. Results indicate that higher rainfall intensity resulted in higher dissolved fraction (fd) values for influent Zn, Cu and Cd, but did not have a significant influence on partitioning of Pb. Speciation indicated that divalent fractions of Cd, Zn, Cu and Pb were changed marginally by the PER. Cu and Pb mainly complexed with organic matter in the influent, while carbonate complexes of these metals in the effluent significantly increased. The PER consistently and statistically reduced all loadings of Cd, Cu, Pb and Zn for all examined events, whether on a mass or concentration basis. As an unsaturated flow unit operation/process the PER can efficiently remove ionic or complexed forms of metal elements. Such UOPs are a potential quality and quantity ICS strategy for rainfall-runoff.

scholarly journals An Integrated Hydraulic and Hydrologic Modeling Approach for Roadside Bio-Retention Facilities

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1248 ◽  
Author(s):  
James Li ◽  
Seyed Alinaghian ◽  
Darko Joksimovic ◽  
Lianghao Chen
Keyword(s):  
Fluid Dynamic ◽  
Low Impact Development ◽  
Hydrologic Model ◽  
Effective Length ◽  
Integrated Modelling ◽  
Storm Event ◽  
Control Performance ◽  
Hydrologic Modelling ◽  
Runoff Control ◽  
Modelling Approach

Roadside bio-retention (RBR) facilities are low impact development practices, which control urban runoff primarily from road pavements. Using hydrologic models, such as the US EPA Storm Water Management Model (SWMM), RBR are typically designed with some fundamental assumptions, including where runoff completely enters the facilities and fully utilizes the whole surface area for percolation, detention, filtration, and infiltration to the surrounding soils. This paper highlights the importance of inlet hydraulics and the spatial distribution of inflow along a RBR, and proposes an integrated hydraulic and hydrologic modelling approach to simulate its overall runoff control performance. The integrated hydraulic/hydrologic modelling approach consists of three components: (1) A dual drainage hydrologic model to simulate runoff generation, runoff hydrographs entering and bypassing a storm inlet, and the outflow hydrograph from a fully utilized RBR; (2) a computational fluid dynamic model to determine the inflow distribution along a RBR; and (3) an overall runoff control performance analysis of RBR by considering the inlet efficiency, and the partially and fully utilized RBR during a storm event. A case study of an underground RBR in the City of Toronto was used to demonstrate the integrated modelling approach. It is concluded that; (1) inlet efficiency of a RBR will determine the overall runoff control performance; and (2) the inflow distribution will dictate the effective length of a RBR, which may affect the overall runoff control performance.

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