Characterization of surface runoff from a subtropics urban catchment

Huang, Jinliang; Du, Pengfei; Ao, Chi-tan; Lei, Mui-heong; Zhao, Dongfeng; Ho, Man-him; Wang, Zhi-shi

doi:10.1016/s1001-0742(07)60024-2

Cited by 56 publications

(16 citation statements)

References 12 publications

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“…Often in highly urbanized catchments, road surfaces can typically constitute up to 22 % of total catchment area and contribute up to 26 % of total runoff volumes with commensurate contributions to total 'heavy' metal (e.g., Cu, Pb, Zn) loads of 19-40 % (Davis and Birch 2010). Yusop et al (2005) and Huang et al (2007) had similar observation for TSS and COD during their research in a tropical urban catchment with a land-use composition of about 27 % agriculture, 37 % residential and commercial and 28 % lawn/parks/bushes. Current study observed similar trends with regard to the pollutant concentrations and showed considerable variations among the events and with the sub-watershed type.…”

Section: Characteristics Of Stormwatersupporting

confidence: 55%

Conceptualizing a decentralized stormwater treatment system for an urbanized city with improper stormwater drainage facilities

Arora

Reddy

2014

Int. J. Environ. Sci. Technol.

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Urbanization involving replacement of previous areas with impervious surfaces and drainage channel modifications results in increased runoff volume leading to flooding and also in deteriorating the quality of the stormwater runoff. An effective and efficient stormwater management is needed in the urban areas for mitigating the impacts and overcoming the problems associated with the urban stormwater. An attempt has been made in the present study to investigate the relationships between stormwater quality and five different land uses for the Patiala city of Punjab State. Stormwater samples collected from these locations, between April 2010 and March 2011, were analyzed for various organic and inorganic water quality parameters and heavy metals. Inter-parameter relationships studied provided vital information in deciding upon the treatment units most likely to be suitable for that particular sub-watershed. Multiple regression modeling helped in assessment of water quality parameters and predicting the quality well before actually analyzing the parameters and thus aided in developing treatment schemes suitable for taking care of the stormwater quality even under worst set of conditions. The outcomes of the research study effectively contributed toward conceptualizing a decentralized stormwater treatment system that would be capable of coping with the stormwater runoff-associated problems faced by the city and can serve as a model for other underdeveloped and developing cities having improper stormwater management facilities.

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Section: Characteristics Of Stormwatersupporting

confidence: 55%

Conceptualizing a decentralized stormwater treatment system for an urbanized city with improper stormwater drainage facilities

Arora

Reddy

2014

Int. J. Environ. Sci. Technol.

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“…According to previous study, total suspended solids (TSS) and chemical oxygen demand (COD) were the main pollutants in urban runoff (Huang et al, 2007). Therefore, TSS, COD and 5-day biochemical oxygen demand (BOD 5 ) were measured in this study using the standard methods of APHA (1998), and potassium dichromate has been used to determine COD.…”

Section: Analysis Methodsmentioning

confidence: 99%

“…6. Moreover, it could be considered that most of COD was absorbed by suspended solids (Thomson et al, 1997;Gnecco et al, 2005;Huang et al, 2007), which suggested that treatment methods such as sedimentation would be effective in the removal of TSS and COD.…”

Section: Relationship Between Tss and Codmentioning

confidence: 99%

Rainwater utilization and storm pollution control based on urban runoff characterization

Zhang

Chen

Ji-zhen

et al. 2010

Journal of Environmental Sciences

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The characteristics of urban runoffs and their impact on rainwater utilization and storm pollution control were investigated in three different functional areas of Zhengzhou City, China. The results showed that in the same rain event the pollutant loads (chemical oxygen demand (COD) and total suspended solids (TSS)) in the sampling areas were in the order of industrial area > commercial area > residential area, and within the same area the COD and TSS concentrations of road runoffs were higher than those of roof runoffs. The first flush effects in roof and road runoffs were observed, hence the initial rainwater should be treated separately to reduce rainwater utilization cost and control storm pollution. The initial roof rainfall of 2 mm in residential area, 5 mm in commercial area and 10 mm in industrial area, and the initial road rainfall of 4 mm in residential area and all the road rainfall in commercial and industrial areas should be collected and treated accordingly before direct discharge or utilization. Based on the strong correlation between COD and TSS (R 2 , 0.87-0.95) and the low biodegradation capacity (biochemical oxygen demand BOD 5 /COD < 0.3), a sedimentation process and an effective filtration system composed of soil and slag were designed to treat the initial rainwater, which could remove over 90% of the pollutant loads. The above results may help to develop better rainwater utilization and pollution control strategies for cities with water shortages.

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“…This dosing method was similar to that used in previous studies [18,28,31]. Synthetic runoff in this study was prepared to mimic local highly polluted runoff characteristics of chemical oxygen demand (COD), organic nitrogen (ON), ammonium-nitrogen (NH 4 + -N), nitrate-nitrogen (NO 3 − -N) and pH 6.5-7.5 (Table 2), according to Huang et al [32]. Each column was watered with experimental synthetic runoff (Table 2) to allow plant growth for four weeks until March 2016 to achieve stability.…”

Section: Experimental Set-upmentioning

confidence: 99%

Effect of Saturated Zone on Nitrogen Removal Processes in Stormwater Bioretention Systems

Wang

Fan

Qin

et al. 2018

Water

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Abstract:The introduction of a saturated zone (SZ) has been recommended to address the issue of nitrogen removal fluctuation in the bioretention system, which is one of the most versatile low-impact development facilities for urban stormwater management. Nine experimental columns were used to characterize the nitrogen concentration variations over the outflow during wetting periods and in SZ during the antecedent drying periods (ADPs), as well as compare removal efficiencies of various nitrogen species in systems with different SZ depths under alternate drying and wetting conditions. Results indicated that NO 3 − -N concentrations in the outflow showed quasi-logistic curve-shaped variations over time: being low (<0.5 mg/L) in the early process, sharply increasing thereafter, and finally flattening around 3.0 mg/L with NO 3 − leaching; NH 4 + -N and organic nitrogen (ON) concentrations were consistently low around 0.5 mg/L and 1.8 mg/L, respectively during the wetting periods. NH 4 + removal efficiency in bioretention systems was consistently high around 80%, not varying with the increasing SZ depth; ON removal efficiency had a slight rise from 57% to 84% and NO 3 − removal efficiency was significantly enhanced from −23% to 62% with the SZ depth increasing from 0 to 600 mm. Deeper SZ could store more runoff and promote more denitrification of NO 3 − and mineralization of ON during the ADPs, providing more "old" water with low NO 3 − and ON concentrations for water exchange with "new" inflow of higher NO 3 − and ON concentrations during the wetting periods. The total nitrogen (TN) removal, a combined result of the instantaneous removal through adsorption and retention in the upper soil layer during the wetting periods and the gradual removal via denitrification and mineralization in SZ during the ADPs, was also improved by increasing the SZ depth; TN removal efficiency was elevated from 35% to 73% when the SZ depth increased from zero to 600 mm.

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Characterization of surface runoff from a subtropics urban catchment

Cited by 56 publications

References 12 publications

Conceptualizing a decentralized stormwater treatment system for an urbanized city with improper stormwater drainage facilities

Conceptualizing a decentralized stormwater treatment system for an urbanized city with improper stormwater drainage facilities

Rainwater utilization and storm pollution control based on urban runoff characterization

Effect of Saturated Zone on Nitrogen Removal Processes in Stormwater Bioretention Systems

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