Available mercury stabilisation technology options
At this moment, there are four companies active in the conversion of mercury to mercury-sulphide. More information about the options is presented below. Information is taken from materials provided by the companies and should not be read as an endorsement of any one particular option and no ranking is implied.
BATREC in Wimmis, Switzerland
BATREC is under the management of SARP Industries within the Veolia Group
The installation consists of two parallel reactors and a filter-press and has a capacity of approx. 1200 tonnes/y. BATREC has two tonne containers available for the transport of the mercury waste from the electrolysis to their plant in Switzerland. For this transportation, special arrangements have to be agreed with the authorities.
The process works in a wet environment resulting in a mercury-sulphide cake with less than 5% water. A conversion rate of 99.999% of the mercury to mercury-sulphide is guaranteed.
The mercury sulphide is packed in plastic bags which then go into 200 liter drums. The mercury sulphide drums are stored in the salt mine of K+S in Herfa Neurode, Germany.
The process has been operational since 2016.
ECON is constructing a mobile unit which is able to convert approx. six tonnes of mercury per day (three shifts) to mercury sulphide. It is a dry process.
The installation is operated on the premises of the electrolysis plant by the operators of the electrolysis plant. The electrolysis plant has to arrange the environmental permit and has to take care of the required utilities and operators.
First pilot plant test where successful and first commercial operation is expected in Q1-2017.
Mayasa is considering the development of a commercial plant with an alternative mercury conversion/ stabilisation process.
In this process the mercury is converted into HgS, which is then converted to a polymer cement.
More information on the process can be found on the Mayasa website.
REMONDIS QR in Dorsten, Germany
The installation has a capacity of approx. 800 tonnes/year. The liquid mercury is converted in a dry process to mercury sulphide.The mercury sulphide is packed in drums and disposed of in the salt mine of K+S in Herfa Neurode, Germany.
The process has been operational since 2014.