Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Collection
For ¥0.57 per day, unlimited downloads CREATE MEMBERSHIP Download

toTop

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

home > search >

Roof Runoff Replenishment of Groundwater in Jinan, China

Author:
Wang, Weiping   Page, Declan   Zhou, Yaqun   Vanderzalm, Joanne   Dillon, Peter  


Journal:
Journal of Hydrologic Engineering


Issue Date:
2015


Abstract(summary):

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. (C) 2014 American Society of Civil Engineers.


Page:
B5014005


VIEW PDF

The preview is over

If you wish to continue, please create your membership or download this.

Create Membership

Similar Literature

Submit Feedback

This function is a member function, members do not limit the number of downloads