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Cyanide removal

Cyanide removal

Cyanide removal as an alternative to classic wet chemical water treatment

The background

Traditionally wet chemical processes are used to remove cyanide from water streams often with hypochlorite. These processes create potentially toxic compounds (AOX) and have a low sustainability score coupled with relatively high operational cost.

The case

Then Chemtura, now Lanxess wanted a new and sustainable alternative for their wet chemical treatment using Sodium Hypochlorite. One of the main drivers was the high amount of AOX that process created and the operational cost.

The solution

Preliminary research by Royal Haskoning (RHDHV) showed Advanced Oxidation to be a viable alternative that fitted all criteria. Van Remmen UV Technology was chosen together with Antea and HMVT to engineer and test a system which was done in close cooperation with the customer.

Results

The eventual confi guration developed and tested in close cooperation with the customer was capable to clean the water in almost half of the estimated time. The Advanox™ technology removed total Cyanide from 140-160ppm to <0,9ppm with extensive automation and integrated cleaning cycles.

“From the start tot the end of the project there has always been technical- and chemical theoretical support from Van Remmen UV Technology.”

(Lanxess)

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