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Abstract: Groundwater is of fundamental significance for human society, especially in semi-arid areas in China. However, due to the fast social and economic development, China has been suffering from the shortage of water resource. In this situation, managed aquifer recharge (MAR) was considered to be an effective measure for the sustainable management of groundwater resources. Since 1960s, China successfully implemented many MAR schemes for different purposes such as restoration of groundwater tables, prevention of seawater intrusion, increasing urban water supplies and controlling land subsidence. From those successful experiences China developed a scientific and applicable system to implement MAR project. However, there were still many challenges in this field, for example, treated waste water had been barely used for recharge. The present review summarized the achievements in MAR applications in China as well as the associated challenges within the past 55 years before the year 2016.
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Key words:
- Managed aquifer recharge (MAR) /
- Groundwater /
- Recharge /
- Aquifer /
- Storage
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Table 1. Analysis criteria of the 136 MAR projects (entry count is the number of projects, followed by the percentage of projects with the specific parameter data)
No. Field parameter Entry count/ % General information 01 Name of site 136 (100%) 02 City 127 (93.3%) 03 Province 134 (98.5%) 04 Latitude 116 (85.3%) 05 Longitude 116 (85.3%) 06 Size of site 18 (13.2%) 07 Under operation since (year) 104 (76.5%) 08 Institution 17 (12.5%) 09 Specific MAR type 136 (100%) 10 Objective 124 (91.2%) 11 Influent source 133 (97.8%) 12 Final use 109 (80.1%) Operation 13 No. of infiltration structures 55 (40.4%) 14 No. if infiltration wells 29 (21.3%) 15 Avg. filter depth (recharge) 16 (11.8%) 16 Scale of catchment area 8 (5.9%) 17 Reservoir area 10 (7.4%) 18 Reservoir/storage capacity 11 (8.1%) 19 Recharge efficiency 4 (3.0%) 20 Avg. injected/infiltrated volume 17 (12.5%) 21 Initial injected/infiltrated volume 2 (1.5%) 22 Total injected/infiltrated volume 7 (5.1%) 23 Avg. infiltration rate 9 (6.6%) 24 No. of monitoring wells 20 (14.7%) 25 No. of recovery wells 9 (6.6%) 26 Avg. filter depth (Extraction) 3 (2.2%) 27 Avg. extracted volume 5 (3.7%) 28 Horizontal aquifer passage 3 (2.2%) Hydrogeological properties 29 Hydraulic conductivity of soils 4 (2.9%) 30 Aquifer thickness 9 (6.6%) 31 Aquifer confinement 96 (70.6%) 32 Aquifer type 96 (70.6%) 33 Development of water table 24 (17.6%) 34 Initial ground water level 13 (9.6%) 35 Final ground water level 16 (11.8%) Water quality 36 Hydrochemical data 12 (8.8%) Table 2. Classification of Chinese MAR projects (Dillon, 2005) and relative references
Main MAR type Specific MAR type Collected literatures Techniques regarding infiltration method Spreading methods Infiltration ponds & basins Huang and Pang (2013), Jin et al. (2012), Li et al. (2011), Pi and Wang (2006), Su et al. (1996), Su et al. (2014), Xu et al. (2012), Yuan (1979), Zhang (2005), Zhang et al. (2013). Flooding Su et al. (2010) Ditch & furrow Ding (1997), Jia and Li (2012), Li (1997), Li (2009), Li et al. (2007), Liu et al. (2006), Liu and Song (1989), Wang and Zhang (1991), Wei et al. (2014), Yan (2009), Yang et al. (2010), Zhang (2005). Excess irrigation Reverse drainage methods Guan et al. (2015) Induced bank filtration Induced bank filtration Zhang et al. (2013) Well, shaft & borehole recharge ASR/ASTR Lu et al. (2014), Liu et al. (2006), Liu and Pan (2014), Qu et al. (2012), Su (2012),Wang et al. (2012), Wang and Qu (2011), Yan et al. (2014), Zhang et al. (2011), Zhao et al. (2004). Dug well/shaft/pit injection Bai et al. (2010),Dong (2010),Dong et al. (2011), Fan (2014), Hao (2011), Liu et al. (2006), Li et al. (2012), Liu and Dai (2013), Qu (2014), Wu et al. (2010), Yang et al. (2010), Zhang et al. (2013), Zhang et al. (2015). Techniques regarding interception methods In-channel modifications Recharge dam Han (2002), Hao (2011), He and Shen (2010), Huang and Pang (2013), Liu et al. (2004), Sun et al. (2006),Wang et al. (1999),Wang et al. (2001), Wang et al. (1998), Wen et al. (2000), Zhang (2005), Zhang (2006). Subsurface dam Huang and Pang (2013), Liu et al. (2004), Shi and Jiu (2014), Sun et al. (2006), Wang et al. (2012), Zhang and Wang (2011), Zhou et al. (2014). Sand and storage dam Channel spreading Rainwater & run-off harvesting Rooftop rainwater harvesting He (2012), Wang (2012), Yan (2009), Zhang et al. (2013), Zhu (2012), Zhu (2013). Barriers & bunds Trenches Table 3. Percentage of the water sources used in the MAR projects in China
Water source of MAR projects Percentage of the water sources in all the MAR projects in China Collected literatures Rainwater 25.0% Ding (1997), He (2012),Huang and Pang (2013),Li et al. (2011), Su et al. (1996), Wang (2012),Yan (2009), Zhang et al. (2013), Zhao et al. (2004), Zhu (2012), Zhu (2013), Lakes & artificial reservoirs 4.8% Jia and Li (2012), Qu (2014). Perennial streams 40.4% Ding (1996), Dong (2010), Guan et al. (2015), Han (2002), Hao (2011), Huang and Pang (2013), Jin et al. (2012), Li (2009), Liu et al. (2004), Liu et al. (2006), Liu and Dai (2013), Liu and Song (1989), Shi and Jiu (2014), Su (2012), Su et al. (2010), Su et al. (2014), Sun et al. (2006), Wang et al. (2012), Wang et al. (2001),Wang et al. (1998), Wang and Qu (2011), Wang and Zhang (1991), Wen et al. (2000), Yang et al. (2010),Yuan (1979), Zhang (2005), Zhang et al. (2013), Zhang (2006), Zhang and Wang (2011), Zhou et al. (2014). Tap water 2.9% Wu et al. (2010), Yang et al. (2010). Aquifer (groundwater) 8.7% Bai et al. (2010), Fan (2014), Liu et al. (2006), Liu and Pan (2014), Lu et al. (2014), Qu et al. (2012), Yan et al. (2014), Zhang et al. (2011). Treated waste water 4.8% Dong et al. (2011), He and Shen (2010), Jin et al. (2012), Li et al. (2012), Pi and Wang (2006), Wei et al. (2014), Xu et al. (2012), Zhang et al. (2007). River water 13.5% Han (2002), He and Shen (2010), Huang and Pang (2013), Shi and Jiu (2014), Wang et al. (1999), Wang et al. (2012), Zhang (2005). -
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