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