scholarly journals Laws and Mechanism of the Fe (III) Clogging of Porous Media in Managed Aquifer Recharge

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 284
Author(s):  
Hexuan Zhang ◽  
Xueyan Ye ◽  
Xinqiang Du
Keyword(s):  
Porous Media ◽  
Colloidal Particles ◽  
Iron Hydroxide ◽  
Fine Sand ◽  
Infiltration Rate ◽  
Managed Aquifer Recharge ◽  
Medium Size ◽  
Iron Hydroxides ◽  
Aquifer Recharge ◽  
Sand Column

The use of stormwater for managed aquifer recharge (MAR) has become one of the most important ways to deal with water shortages and the corresponding environmental geological problems, especially in the north of China. The Fe (III) clogging of porous media is a common and significant problem that influences the effect of the infiltration rate. This paper focuses on the migration characteristics and clogging mechanisms of iron hydroxides in sand columns. The results indicate that the permeability of porous media significantly decreased at the inlet of the fine sand column and inside the coarse sand column. We demonstrated that, when the Fe (III) concentration was higher, a smaller infiltration medium size was produced more rapidly, and there was more significant clogging. More than 80% of the injected Fe (III) remained in the sand column, and more than 50% was retained within 1 cm of the column inlet. The mass retention increased with the decrease in the size of the infiltration medium particles and with the increase in the injected Fe (III) concentration. The main material that caused Fe (III) clogging was iron hydroxide colloids, which were in the form of a granular or flocculent membrane coating the quartz sand. The mechanisms of clogging and retention were blocking filtration and deep bed filtration, adsorption, and deposition, which were strongly affected by the coagulation of Fe (III) colloidal particles.

Column experiments to investigate transport of colloidal humic acid through porous media during managed aquifer recharge

2016 ◽  
Vol 25 (1) ◽  
pp. 79-89 ◽  
Author(s):  
Dan Liu ◽  
Jingjing Zhou ◽  
Wenjing Zhang ◽  
Ying Huan ◽  
Xipeng Yu ◽  
...  
Keyword(s):  
Porous Media ◽  
Humic Acid ◽  
Managed Aquifer Recharge ◽  
Column Experiments ◽  
Aquifer Recharge

Transport of Escherichia coli phage through saturated porous media considering managed aquifer recharge

2017 ◽  
Vol 25 (7) ◽  
pp. 6497-6513 ◽  
Author(s):  
Wenjing Zhang ◽  
Shuo Li ◽  
Shuang Wang ◽  
Liancheng Lei ◽  
Xipeng Yu ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Porous Media ◽  
Managed Aquifer Recharge ◽  
Saturated Porous Media ◽  
Aquifer Recharge ◽  
Escherichia Coli Phage

scholarly journals Colloid clogging of saturated porous media under varying ionic strength and roughness during managed aquifer recharge

2019 ◽  
Vol 9 (3) ◽  
pp. 225-231 ◽  
Author(s):  
Du Xinqiang ◽  
Song Yalin ◽  
Ye Xueyan ◽  
Luo Ran
Keyword(s):  
Porous Medium ◽  
Porous Media ◽  
Ionic Strength ◽  
Smooth Surface ◽  
Saturated Porous Medium ◽  
Managed Aquifer Recharge ◽  
Permeability Reduction ◽  
Saturated Porous Media ◽  
Aquifer Recharge ◽  
Pore Throat

Abstract Column experiments were conducted to examine the clogging effects of colloids under controlled conditions of solution ionic strength (IS) and porous media roughness. The results showed that colloids in recharge water play an important role in the clogging process of saturated porous media, such that even a small amount of colloid may cause a large reduction in the permeability of the porous medium. Clogging at the pore throat was inferred to be the main reason for the severe permeability reduction of porous media. The characteristics of colloid clogging were clearly influenced by both IS and medium roughness. Recharge water with a higher IS facilitated greater attachment of colloids to the surface of the saturated porous medium, which lead to superficial clogging, while collectors with a rough surface resulted in greater clogging than collectors with a smooth surface.

scholarly journals Site selection for managed aquifer recharge in the city of Kabul, Afghanistan, using a multi-criteria decision analysis and geographic information system

2021 ◽  
Author(s):  
Mohammad Salem Hussaini ◽  
Asadullah Farahmand ◽  
Sangam Shrestha ◽  
Sanjiv Neupane ◽  
Manuel Abrunhosa
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Decision Analysis ◽  
Infiltration Rate ◽  
Managed Aquifer Recharge ◽  
Drainage Density ◽  
Geographic Information ◽  
Aquifer Recharge ◽  
Multi Criteria Decision Analysis ◽  
Suitability Map

AbstractWhile the success and sustainability of managed aquifer recharge (MAR) strongly depends on many characteristics of the site, it is necessary to integrate the site characteristics and develop suitability maps to indicate the most suitable locations. The objective of this study is to integrate geographic information system (GIS) and multi-criteria decision analysis (MCDA) techniques to identify the most suitable areas for a MAR project in the Kabul city area, Afghanistan. Data for six effective criteria, including slope, drainage density, surface infiltration rate, unsaturated zone thickness, soil type and electrical conductivity, were collected and then a classification map was produced for each criterion in the GIS environment. By applying MCDA techniques, the weights of the effective criteria were obtained. A suitability map was generated from each technique separately based on a combination of all criteria weights and thematic layers. The result of the analytical network process (ANP) method was found to be more precise and reliable compared with that of the analytical hierarchy process (AHP) method. Based on the final suitability map produced from the ANP model, there is 3.7, 15.0, 37.4, 33.1 and 10.3% of the total area that is unsuitable, of low suitability, moderately suitable, suitable and very suitable for MAR application, respectively. As a final result of this work, seven sites have been prioritized based on land use. The integration of multi-criteria decision analysis and GIS is recognized as an effective method for the selection of managed aquifer recharge sites.

scholarly journals Analysis of Potential Risks Associated with Urban Stormwater Quality for Managed Aquifer Recharge

2019 ◽  
Vol 16 (17) ◽  
pp. 3121 ◽  
Author(s):  
Song ◽  
Du ◽  
Ye
Keyword(s):  
Groundwater Resources ◽  
Oxygen Demand ◽  
Water Shortage ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge ◽  
High Concentration ◽  
Sand Column ◽  
Sustainable Resources ◽  
Contamination Risk ◽  
Urban Stormwater Quality

Managed aquifer recharge (MAR) can be used to increase storage and availability of groundwater resources, but water resources available for recharge are constrained due to a surface water shortage. Alternative resources, like stormwater, are receiving increasing attention as sustainable resources for reuse in MAR. However, pollutants in stormwater can impact groundwater quality, and cause clogging of the infiltration system. Based on the stormwater data in the literature, the physicochemical stormwater properties of data were analyzed. The results showed that concentrations of pollutants from different underlying surfaces varied widely. The main pollutants of stormwater were as follows: Total suspended particles (TSSs), organic matter represented by the chemical oxygen demand (COD), nutrients (total nitrogen, TN; total phosphorus, TP; and NH3–N), and metals (Zn, Pb, Cu, Cd, Fe, and Mn). Based on the simulation of TOUGHREACT, the contamination risk of pollutants for each type of stormwater was assessed. The risk of contamination was divided into four categories due to the different migration times of ions through the sand column. The iron ion has the highest risk of contamination, followed by Zn and Mn, and the contamination risk of nutrients and other metals (Pb, Cu, and Cd) are relatively low. Besides, the physical, biological, and chemical clogging risk were evaluated. The physical clogging potential of all types of stormwater is very high because of the high concentration of TSS. According to the concentration of TN that can spur the growth of bacteria and algae, the relative risk of biological clogging for stormwater is greenbelt stormwater < road stormwater < roof stormwater. However, only road stormwater has high chemical clogging due to the existence of iron, which can generate precipitation that blocks the pore volume.

scholarly journals Assessing risk of clogging in community scale managed aquifer recharge sites for drinking water in the coastal plain of south-west Bangladesh

2016 ◽  
Vol 27 (1) ◽  
pp. 75-86 ◽  
Author(s):  
Sarmin Sultana ◽  
Kazi Matin Ahmed
Keyword(s):  
Drinking Water ◽  
Iron Concentration ◽  
Material Design ◽  
Nutrient Content ◽  
Infiltration Rate ◽  
Pond Water ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge ◽  
Sand Filter ◽  
Salinity Difference

Community scale managed aquifer recharge (MAR) has been implemented by infiltrating pond and rooftop rainwater into shallow, locally confined brackish aquifers in the southern deltaic plains of Bangladesh for providing safe drinking water. This paper mainly deals with the risks of physical clogging and the issues of clogging related to aquifer material, design, drilling and construction methods at 20 sites. Risk of chemical and biochemical clogging has also been briefly discussed. High turbidity in the source pond water is mainly responsible for physical clogging. In order to reduce the turbidity MAR system has been designed with an over ground double chambered filtration tank with a graded sand filter in one chamber. Pond water is pumped into the filtration tank to pass through sand filter. Efficiency of turbidity removal is assessed by measuring turbidity of water at the source pond, after passing though the sand filter and at the abstraction well. The turbidity of source (pond) water ranges from 50 to 150 NTU decreases to 5 NTU after passing through the sand filter in most of the sites. Clogging is assessed by performing falling head tests at each recharge well at number of times during the operation of the test sites. A maximum infiltration rate of 6m3/day has been achieved at a number of sites where the average is about 3m3/day. Relatively high nutrient content present both in source and groundwater water could cause biological clogging. Probability of clogging due to clay swelling should be considered due to salinity difference of source and groundwater although sodium adsorption ratio has been observed to be reduced which reduce the risk of reduction of permeability. There is possibility of chemical plugging in the aquifer and around the well from the precipitation of iron bearing minerals as iron concentration has been observed to be reduced.Bangladesh J. Sci. Res. 27(1): 75-86, June-2014

Mechanism of Suspended Kaolinite Particle Clogging in Porous Media During Managed Aquifer Recharge

Ground Water ◽  
2019 ◽  
Vol 57 (5) ◽  
pp. 764-771 ◽  
Author(s):  
Xueyan Ye ◽  
Ruijuan Cui ◽  
Xinqiang Du ◽  
Sijia Ma ◽  
Jingtong Zhao ◽  
...  
Keyword(s):  
Porous Media ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge ◽  
Kaolinite Particle
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