Roof Runoff Replenishment of Groundwater in Jinan, China
Publication: Journal of Hydrologic Engineering
Volume 20, Issue 3
Abstract
In Jinan, China, which is named the Spring City of China, karst groundwater is an important water source for urban supply and maintaining spring flow. However, rapid urbanization in Jinan, China, has caused overexploitation of groundwater and an increase in surface runoff. Consequently, roof runoff harvesting and recycling via the aquifer is being considered to augment the recharge for this area. A pilot-managed aquifer recharge scheme with urban roof runoff was investigated as part of this case study to supplement groundwater recharge. This case study is intended as a pilot for the wider application of managed aquifer recharge at the University of Jinan. The pilot-scale system is composed of the roof catchment, first-flush removal device, regulating tank, filter tank, and recharge well; dimensions and operating parameters of each component were designed by laboratory experiment and hydraulic calculations. The quality of roof runoff is better than road runoff; however, it is still contains a number of hazards. The injected water quality must meet the quality standard for groundwater for the protection of potable groundwater quality. Barriers, or measures to protect water quality, within the treatment train include first-flush removal (first 6 mm rainfall) followed by sedimentation and filtration in a zeolite filter. Water quality monitoring of each barrier and geochemical simulation were used to evaluate the potential influences on groundwater recharge and quality. The rainfall, recharge quantities, and groundwater levels as well as water quality through the recharge process were monitored continuously in June to November 2012. All indexes of treated roof runoff were below the quality standard for groundwater, with the exception of turbidity. Geochemical modeling indicates there is some calcite dissolution after injection but this does not pose a risk to the operational lifetime of the recharge well. However, pretreatment of the source water still needs further improvement to decrease the turbidity to acceptable levels. In addition, water quality risk management is also required for sustainable long-term operation of the scheme.
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Acknowledgments
The work was supported by National Natural Science Foundation of China (40972169, 412101125) and the support of the partners to the Managed Aquifer Recharge and Stormwater Use Options research project. These are the National Water Commission through the Raising National Water Standards Program, the SA Government through the Goyder Institute for Water Research, CSIRO Water for a Healthy Country Program, City of Salisbury, the Adelaide and Mt Lofty Ranges Natural Resources Management Board, and former United Water International.
References
Bouwer, E., et al. (2008). Prospects for managed underground storage of recoverable water, Committee on Sustainable Underground Storage of Recoverable Water, National Research Council, National Academies Press, Washington, DC.
Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for an consumption. (1998). Official Journal of the European Communities, L 330, Vol. 41, 32–54.
Gong, S. (2006). “Review on land subsidence research of Shanghai.” Shanghai Geol., 5(4), 25–29.
Liu, P. (2000). “Recharge water. Recharge water has not polluted mineral water for drinking in Shanghai.” Shanghai Geol., (3), 62.
Maoqiang, H., Weiping, W., and Ping, Z. (2012). “Tracer test on rooftop water replenishment of fracture karst aquifer.” Ground water, 34(2), 3–5.
Ping, Z., Weiping, W., and Bin, C. (2011). “Urban rooftop water harvesting and utilization engineering design.” Ground water, 33(6), 218–219.
Quality Standard for Groundwater. (1993)., China Standards Press, China.
Tiexi, L., and Liting, X. (1996). “Research on springs protection and water supply in Jinan spring region.” Proc., Researches on the Geology and Mineral Resources in Shandong Province, Jinan, Shandong Science and Technology Press, Jinan, China, 242–252.
Vanderzalm, J., Dillon, P., Marvanek, S., and Page, D. (2007). “Over 100 years of drinking stormwater treated through MAR: Assessing the risk of stormwater recharge on the quality of the Blue Lake.” Management of aquifer recharge for sustainability, P. Fox, ed., Acacia Publishing, Phoenix, AZ.
Vanderzalm, J., Schiller, T., Dillon, P., and Burn, S. (2008). “Impact of stormwater recharge 360 on Blue Lake Mount Gambier’s drinking water.” Sustainable groundwater man-361 agement for North China, Yellow River Water Conservancy Press, China, 22–27.
Weiping, W. (2011). “Study on characteristics of roof runoff for fissure karst aquifer recharge.” J. Hydraul. Eng., 42(4), 477–480.
Zhongzhu, Z., Weiping, W., and Yingkui, J. (2012). “Study on water-rock interaction of karst groundwater recharge with roofwater trial.” Carsologica Sinica, 31(3), 272–277.
US EPA. (2002). “National primary and secondary drinking water regulations.” 40 CFR parts 141 and 143 Federal Register.
Information & Authors
Information
Published In
Journal of Hydrologic Engineering
Volume 20 • Issue 3 • March 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jan 14, 2014
Accepted: Jun 12, 2014
Published online: Sep 3, 2014
Discussion open until: Feb 3, 2015
Published in print: Mar 1, 2015
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