Welcome to visit Geoscience!

Geoscience ›› 2023, Vol. 37 ›› Issue (04): 977-985.DOI: 10.19657/j.geoscience.1000-8527.2022.030

• Water Resources and Environmental Geology • Previous Articles     Next Articles

Research Progress and Prospect of Groundwater Pump and Treat Technology

ZHANG Li1,2, LIU Fei1(), YUAN Huiqing2, LIANG Kaixuan3   

  1. 1. School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
    2. School of Resources and geosciences, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
    3. Beijing Institute of Mineral Geology, Beijing 101500, China
  • Received:2022-02-19 Revised:2022-06-21 Online:2023-08-10 Published:2023-09-02

Abstract:

Groundwater pump and treat technology (P&T) is a representative technology of groundwater reme-diation, and is at present widely used also to control and repair groundwater pollution. However, in the practical application of P&T technology, it is often interfered by the complexity of hydrogeological conditions and the special behavior of ground pollutant migration and transformation. The most important problem is tailing or rebound, which leads to low efficiency and high cost in the later stage of treatment. Based on expounding the development and evolution of P&T technology, we systematically analyzed its application conditions, technological pros and cons, system design optimization methods and its combined use with other technologies. We concluded that with the application of pumping treatment, it is more used for the pump of high concentration pollutants in the initial stage of pollution and hydraulic control to avoid pollutant diffusion. Currently, the goal of pumping changes from treatment to flow field control. The pumping/injecting wells are often located at the contamination source and plume and their upstream and downstream. The purposes of controlling pollutant diffusion and clean water diversion were achieved by pumping the contaminated water or injecting uncontaminated water into the ground to form a watershed. Our results provide suggestions for the flexible application of groundwater pump technology and the selection of prevention and control solutions for site groundwater pollution in China.

Key words: groundwater contamination, pump and treat technology, hydraulic control, optimization method, combined technology

CLC Number: