Does it really work? 1

[KatyaOXI]

Dear colleagues,

Had anyone come across a vortex layer machine for wastewater treatment sold by Globecore (

https://globecore.com/products/avs-150k-wastewater-treatment-complex/)?

I can't find any customer reviews online. Would like to know the drawbacks of this technological solution. Can anyone assist?

Thank you!

Sincerely,

Jekaterina Kenina

 

[bimr]

The website states that the AVS-150К complex is designed to purify wastewater, removing hexavalent chrome, iron, phenol, cyans, arsenic, fluorine and other impurities.

It is not possible to remove some of these components simultaneously. The website also states that a sampling and ferromagnetic particle capture tank is part of the equipment setup. Some of these components will require filtration to allow removal to mg/L concentrations and this is not possible with a "capture tank".

Conventional treatment of hexavalent chromium wastewaters involves the reduction of hexavalent chromium to trivalent chromium and subsequent precipitation of trivalent chromium as hydroxide. Hexavalent chromium reduction is commonly accomplished using chemical reduction.

Hexavalent chromium is reduced to trivalent chromium at acid pH using chemical reduction agents. Sodium bisulfide, sodium metabisulfide, and ferrous sulfate are among the common reduction agents used for small plants. Sulfur dioxide is hydrolyzed in water to yield sulfite.

Oxidation is a destructive method for the treatment of phenols and other organics. It can use a variety of conventional oxidizing agents (ozone, chlorine, permanganate etc.), catalysts, and conditions, including irradiation. The choice of oxidation strategy depends heavily on the economics, wastewater chemistry, and other conditions. Reaction products may require further treatment or be precipitated (meaning that consideration may need to be given to appropriate solids management).

The Fenton reaction (and variants) use H2O2 and Fe2+ to produce hydroxyl radicals, which oxidize organics such as phenols. As a phenol treatment method, it is usually cost-effective, and suitable for high concentrations. However, it is pH dependent and may not suit all water chemistries. As with many other chemical treatments, sludge is produced that requires management.

The predominant mode of cyanide wastewater treatment is alkaline chlorination. This treatment proceeds in two steps. First, cyanide is oxidized to cyanate by sodium hypochlorite. This reaction may be brought about through direct addition of sodium hypochlorite or by addition of chlorine gas and sodium hydroxide. In the second step, cyanate is oxidized to carbon dioxide and nitrogen by further addition of the chosen oxidizing agents.

I would suggest that you request this company to demonstrate the treatment with a pilot plant at the company's expense.