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6.3.2 Short description
The challenges in treating wastewater are manifold depending on the origin of the wastewater. Problematic substances are organic matter (POPs), estrogenic activity and nitrate. Industrial wastewater may additionally contain heavy loads of metals or dyes.
Table: Overview over methods, materials and target compounds
|
Method |
Nanomaterials |
Target compounds |
|
Photocatalysis |
TiO2, ZnO |
POPs, metal ions, formic acid, estrogenic activity, pestizide, dyes |
|
Nanofiltration |
Ceramic membranes, nanowire membranes, polymer membranes |
Metals, anions, viruses/bacteria, organic material, dyes |
|
Adsorption |
CNT, metal (oxides), Magnetic NP |
Metals, radionuclides, arsen |
|
Electrochemical oxidation |
BDD |
aromatics, aliphatics and heterorganics, like phosphonates, sulfonates, pesticides, EDTA, as well as some inorganic components, like cyanides, ammonia |
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Visits: 12, Published on: November, 13th 2008, 02:33 PM, Last edit: 2009-05-01 22:08:57 Size: 953 Byte
Tags: waste water, water, method