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Neutralization
Decreasing the acidity or alkalinity of a substance by adding alkaline or acidic materials, respectively.
Source: Terms of the Environment ...
Neutralization: The addition of substances to neutralize water, so that it is neither acid, nor basic. Neutralization does not specifically mean a pH of 7.0, it just means the equivalent point of an acid-base reaction.
After charge neutralization of suspended particles, they will stick to each other and to the coagulant chemical particles. To aid in the flocculation, water is slowly mixed in a large tank called a flocculation basin.
Typically black water, after neutralization, is used for non-potable uses such as flushing or irrigation.
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decontamination
Process of rendering harmless (by neutralization, elimination, removal etc.) a potentially toxic substance in the natural environment, laboratory areas, the workplace, other indoor areas, clothes, food, water, sewage etc.
antitoxin Antibody to the toxin of a microorganism, usually a bacterial exotoxin. Antitoxin combines with a specific toxin with the subsequent neutralization of the toxicity.
 See also: Table, Environment, Bacteria, Reduce, Environmental
  
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