Contaminants such as arsenic, iron, manganese, lead, and cadmium can dissolve from soil and waste material into groundwater in a process known as leaching. It is then crushed to produce relatively uniformly sized material. Water gets into an aquifer from the land surface. How does the water get underground? Groundwater is water that accumulates underground. Aquifers are layers of rock and soil with water flowing through their small pores. Globally, between 25 per cent and 40 per cent of the world's drinking water is drawn from boreholes and dug wells. Groundwater can also come to the surface as a spring or be pumped from a well. About 50 percent of our municipal, domestic, and agricultural water supply is groundwater. How long does water spend underground? For the most part, there are not giant caves under earth's surface containing violent rivers of water flowing quickly through them. Converting Bauxite to Alumina. Groundwater and soil contamination is a common issue at current and former landfill sites. The dissolution of these metals is based on the chemistry of the water and the soil. Typically, precipitation falling onto the Earth’s surface soaks into the ground and flows down to the water table. It can exist in spaces between loose particles of dirt and rock, or in cracks and crevices in rocks. Groundwater remediation is the process that is used to treat polluted groundwater by removing the pollutants or converting them into harmless products. The production of the metal Aluminum from the raw ore of Bauxite is a two stage process. Groundwater pollution works differently from surface water pollution, although they have many sources in common, such as fertilizers, pesticides, and animal wastes. Seawater can also seep into groundwater and is a common problem in coastal areas. The Earth’s surface is permeable, which means that it takes in water in like a sponge. Both of these are common ways we get groundwater to drink. Create an account to start this course today Used by over 30 million students worldwide Create an account Like this lesson Share. Different types of rocks and dirt can contain different amounts of water. How does aluminum get into groundwater? STEP 1 - Crushing and Grinding: Alumina recovery begins by passing the bauxite through screens to sort it by size. The saturation zone is the portion of the soil and rock that is saturated Stage 1. Groundwater is water present below the ground surface that saturates the pore space in the subsurface. How does the ground store water? It is referred to as "saltwater intrusion". Most wells do not get their water from underground rivers, but instead get the water from aquifers. Several important concepts should be kept in mind: 1.Unlike surface water, ground water does not typically flow toward a single matter, as well as other groundwater quality factors.