stormwater quality Articles | Environmental XPRT

Input variable selection and calibration data selection for storm water quality regression models

Storm water quality models are useful tools in storm water management. Interest has been growing in analyzing existing data for developing models for urban storm water quality evaluations. It is important to select appropriate model inputs when many candidate explanatory variables are available. Model calibration and verification are essential steps in any storm water quality modeling. This ...

Jul. 4, 2013

By IWA Publishing

Selection of monitoring locations for storm water quality assessment

Storm water runoff is a major contributor to the pollution of receiving waters. Storm water characteristics may vary significantly between locations and events. Hence, for each given location, this necessitates a well-designed monitoring campaign prior to selection of an appropriate storm water management strategy. The challenge for the design of a monitoring campaign with a given budget is to ...

Jun. 25, 2014

By IWA Publishing

Iintegrated Storm Water Management (iSWM™): Changing the Way we Develop in North Central Texas

ABSTRACTWith the continued need to protect human life, property, and natural resources, development projects in Texas need to change how storm water is integrated into the planning and design process. The predominant approach to storm water management in North Texas has been quantity based to address peak runoff from new development. Storm water regulations, quality of life issues, and ...

Oct. 22, 2006

By Water Environment Federation (WEF)

Research on the characteristics of the water quality of rainwater runoff from green roofs

This paper investigates the water quality characteristics of rainwater runoff from dual-substrate-layer green roofs in Tianjin, China. The data were collected from four different assemblies and three types of simulated rains. The storm-water runoff quality was monitored from early June through late October 2012 and from July through late November 2013. The results revealed that the runoff water ...

Oct. 20, 2014

By IWA Publishing

Stormwater and Spill Management at an Iron Pipe Foundry in Texas

ABSTRACTLarge industrial sites have had permits for storm water discharges under the NPDES program of the Clean Water Act since the mid to late 80’s. Recent emphasis has been placed on regulated facilities to prepare and implement Spill Prevention, Control and Countermeasure (SPCC) plans under the Oil Pollution Prevention Act (40 CFR 112). A large iron pipe foundry in Texas has several storm ...

Oct. 22, 2006

By Water Environment Federation (WEF)

What Features Do You Need In Your Mobile Or Modular Laboratory?

Today’s need for laboratories crosses many industries in a variety of ways. This is driven by numerous factors, but most notably by regulatory compliance requirements and the need to increase the efficiency of operations. Whether the need is for a mining operation’s compliance covering storm water quality or an oil/gas company running geochemical operations on well fluids to ...

Feb. 8, 2013

By GF Environmental Labs

System design and treatment efficiency of a surface flow constructed wetland receiving runoff impacted stream water

This study reported the efficiency of a free water surface flow constructed wetland (CW) system that receives runoff impacted stream water from a forested and agricultural watershed. Investigations were conducted to examine the potential effect of hydraulic fluctuations on the CW as a result of storm events and the changes in water quality along the flow path of the CW. Based on the results, the ...

Jan. 1, 2012

By IWA Publishing

Forum: Urban storm water management: quantity and quality

A watershed can experience extra stresses due to the activities of urbanisation such as new land developments. This brief Forum paper raises two matters for discussion concerning best management prectices (BMPs) in this area: firstly, that it would be beneficial to have more continuous monitoring programs put in place to test and document the effectiveness of various BMPs in various regions; and ...

Apr. 7, 2011

By Inderscience Publishers

Rainfall effects on inflow and infiltration in wastewater treatment systems in a coastal plain region

Aging wastewater collection and treatment systems have not received as much attention as other forms of infrastructure, even though they are vital to public health, economic growth, and environmental quality. Inflow and infiltration (I&I) are among potentially widespread problems facing central sewage collection and treatment systems, posing risks of sanitary system overflows (SSOs), ...

Feb. 7, 2017

By IWA Publishing

Storm effects on regional beach water quality along the southern California shoreline

Two regional studies conducted during dry weather demonstrated that the Southern California Bight (SCB) shoreline has good water quality, except near areas that drain land-based runoff. Here, we repeat those regional studies 36 h after a rainstorm to assess the influence of runoff under high flow conditions. Two hundred and fifty-four shoreline sites between Santa Barbara, California and ...

Jan. 1, 2003

By IWA Publishing

Greendale road shoulder, Greendale, Wisconsin

The roadside along 51st Street between COllege Avenue and Grange Avenue in Greendale, Wis., is grass-covered, with its only distinguishing characteristic the lack of an aggregate shoulder alongside the asphalt pavement. Instead of a crushed aggregate shoulder, a 2-foot-wide asphalt shoulder abutted by a 6-foot-wide green shoulder has been constructed along 51st Street as part of a village of ...

Jun. 8, 2009

By Presto Geosystems

What are the storm water treatment areas and how is it beneficial for the beneficiaries?

Safe drinking water is going scarce all around the world for the growing population and pollution! Increased rates of water usage in industrial as well as residential areas are the specific reasons behind this. Billions of people are away from easy access to safe drinking water. Apart from this, water borne illness has turned as one of the leading cause for growing the death rates. Lack of clean ...

Aug. 23, 2017

By Genesis Water Technologies, Inc.

Influence of the land use pattern on the concentrations and fluxes of priority pollutants in urban stormwater

This paper presents the results of the concentrations (μg/L) and fluxes (g/ha) of priority substances in stormwater from three watersheds with different land use patterns (namely, residential, urban dense, high urban density). Samples were collected at the outlet of these watersheds. Thirteen chemical groups were investigated corresponding to 88 individual substances before treatment. Results ...

Jan. 1, 2011

By IWA Publishing

Estimation of build-up and wash-off models parameters for an east-Australian catchment

This paper presents calibration of a catchment water quality model for continuous simulation of the water quality parameters from a catchment to the catchment outlet. The model is an integration of two sub-models: the hydrologic model and the water quality model. The hydrologic model estimates the amount of surface water runoff generated from the catchment during the storm event/ events. The ...

Dec. 2, 2013

By Inderscience Publishers

Calibration of stormwater quality regression models: a random process?

Regression models are among the most frequently used models to estimate pollutants event mean concentrations (EMC) in wet weather discharges in urban catchments. Two main questions dealing with the calibration of EMC regression models are investigated: i) the sensitivity of models to the size and the content of data sets used for their calibration, ii) the change of modelling results when models ...

Aug. 1, 2010

By IWA Publishing

Treatment performance of a constructed wetland during storm and non-storm events in Korea

The efficiency of a free water surface flow constructed wetland (CW) in treating agricultural discharges from stream was investigated during storm and non-storm events between April and December, 2009. Physico-chemical and water quality constituents were monitored at five sampling locations along the flow path of the CW. The greatest reduction in pollutant concentration was observed after passing ...

Dec. 1, 2011

By IWA Publishing

Assessing the viability of microhydropower generation from the stormwater flow of the detention outlet in an urban area

Small-scale hydropower is the generation of electrical power of 10 MW or less from the transformation of kinetic energy in flowing water to mechanical energy in a rotating turbine to electrical energy in a generator. The technology is especially useful when installed with a stormwater infrastructure in countries teeming with abundant rainfall. It is upon this concept that this study is being ...

Aug. 6, 2014

By IWA Publishing

Aeration performance of hydrodynamic flow regulators

Hydrodynamic flow regulators are used in environmental engineering as a replacement for traditional flow throttling devices. They are extremely efficient, reliable and free from the common disadvantages of traditional devices. Recent research by the authors indicated that the atomization of a liquid by hydrodynamic flow regulators accelerates oxygenation and may be used for improving the ...

Jun. 21, 2013

By IWA Publishing

Using Permeable Eco-Paving to Achieve Improved Water Quality for Urban Pavements

This paper describes the planning, design and construction of a permeable pavement as a practical demonstration of the benefits of eco-paving in Australian environmental management. The paper addresses the use of permeable pavements as part of a Water Sensitive Urban Design that allows infiltration of stormwater, reduction of pollutants and slow reticulation of the stormwater to an ecologically ...

Oct. 12, 2003

By Advanced Pavement Technology

Saving the rainforest and tapirs in Nicaragua

Nicaragua is the second poorest country in the northern hemisphere and one of those most susceptible to the impacts of climate change, especially to extreme weather events like hurricanes and flooding. From early September to early October, Our Place On Earth traveled to Nicaragua, filming, researching and visiting with various groups working on the ground to address these impacts. One of the ...

Dec. 8, 2014

By Ensia