Wastewater purification with nanoparticle-treated bed

Abstract

Nanoparticle-treated particle packs, such as sand beds, may effectively filter and purify liquids such as waste water. When tiny contaminant particles in waste water flow through the particle pack, the nanoparticles will capture and hold the tiny contaminant particles within the pack due to the nanoparticles' surface forces, including, but not necessarily limited to van der Waals and electrostatic forces. Coating agents such as alcohols, glycols, polyols, vegetable oil, and mineral oils may help apply the nanoparticles to the particle surfaces in the filter beds or packs.

Description

technical field [0001] The present invention relates to methods and compositions for the removal of pollutants from liquids, such as wastewater, and in one non-limiting embodiment, more particularly to the removal of Methods and compositions of pollutants. Background technique [0002] Numerous methods and processes are known for cleaning, purifying, clarifying and otherwise treating fluids for proper disposal, consumption, use and other needs. These methods include, but are not necessarily limited to: centrifugation and filtration to remove particulate matter, chemical treatment to sterilize water, distillation to purify a liquid, decantation to separate two liquid phases, reverse osmosis to desalt a liquid, electrodialysis to make a liquid Desalination, disinfection to sterilize food, and catalytic processes to convert undesired reactants into useful products. Each of these methods is well suited to a particular application and often a combination of methods is used for ...

AI Technical Summary

Problems solved by technology

These drawbacks include microbial adaptations to their destructive effects, safety hazards associated with the use and storage of chlorine, and environmental impacts

UV is a common treatment, but the liquid must be clear for it to work, and it does not break down any biofilm formation; it is also very expensive to install and operate

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