Pedro water napatchai in the lives of human beings. In the past, attitude that humans exist adequate human and common uses. regardless of multiple effects. Reasons that may arise so long as the particular water source until. Start with the problem, both in terms of quantity and quality. The current attitude to change Humans began to realize the need to preserve this valuable resource to provide water resources can benefit allocations Dai remained sustainable. For natural water sources in General, often have very different substances are dissolved into the water due to the on a good solvent. Ions of metals found in natural water by sodium (Na) and Tol ., calcium (Ca), sasiam and (K), magnesium (Mg), iron (Fe) and manganese (Mn) Ion injecton loop of metal with a small amount of Dai copper (Cu), hospitalizations, zinc (Zn), lead (Pb), mercury (Hg), cadmium (Cd), chromium (Cr), and the new gate. ิล (Ni) is that if there is a quantity of metal ions, these too will harm consumers, such as groundwater levels of metal ions are shallow, relatively high. And the current groundwater use is increasingly. Some of the water runs through the filter before using the machine, which found that the metal ions in ground water affect plants such as ions of iron. Cause of iron rust coating of rice roots As a result, the rice is very damaged. Therefore, in order to reduce the amount of metal ions, so there should be conditions of water, proper condition before use. By then, water treatment, there are several methodologies for both sedimentation, filtration, adsorption.
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