Nanoparticles of metallic iron for ground water treatment (review of foreign publications)

Summary

The international experience in using the technology of ground water treatment with the help of nanoparticles of metallic iron is presented. The technology of injecting nanoparticles provides for their transfer through intake wells practically to any point at any depth of the ground water basin. Limitations are imposed exclusively by economic factors. The well number and placing are determined by geologic and geochemical characteristics of the polluted area subject to investigation. Prior to the implementation of a project studies shall be carried out to specify the required composition and concentration of iron particle suspension, injection equipment, well placing and depth, working pressure and consumption of the suspended matter, duration of treatment.

Key words

ground water , pollutants , injection , well , nanoparticles of metallic iron

Hydrogen sulfide and methane in the sewer networks (review)

Summary

International experience of using methods of protecting from hydrogen sulfide and methane generation in sewer networks is presented. The efficiency of using reagent methods and their cost depend to a great extent on the parameters of sewer pipelines and wastewater composition. Therefore in order to make a reliable choice of one or another method one should take into consideration the local conditions and carry out relevant tests.

Key words

sewerage network , hydrogen sulfide , methane , reagent method , injection