Local regulations in other countries, such as the European Union can differ from the U.S. and will therefore affect disposal routes. It is important that users meet the disposal requirements for spent media to ensure compliance with local and national legislation.
Adsorption tests on Bayoxide® E33 have shown that it will adsorb a range of ions in addition to arsenic, which will be adsorbed in preference to these other ions. Under high pH conditions, high levels of certain interferants can reduce the media’s adsorption capacity for arsenicphosphate (>1.0 ppm) and silica (>40 ppm) can present interference and reduce the media’s adsorption capacity for arsenic.
Long term exposure to arsenic is proven to have a detrimental effect on human health. Consequently the global water treatment market has been tasked with finding technological solutions to reduce arsenic levels from the old WHO permissible 50 μg/l (micrograms per litre) level to below 10 μg/l.
Severn Trent Services’ arsenic removal program incorporates a process and filter media that can be used by those feeling the pressures of regulatory compliance. The SORB 33 technology uses Bayoxide E33 granular or Bayoxide E33P pelletized, iron oxide media. Both forms of the iron oxide media have a high capacity for arsenic removal. The ferric oxide absorptive media is capable of reducing arsenic levels to below 4 ug/l across a complete range of drinking and non drinking water applications and is approved for use in potable water treatment by the UK Secretary of State, French Ministry of Health and the US National Sanitary Foundation (NSF61).
Severn Trent Services’ arsenic removal experience dates back to 1999 with 16 arsenic removal treatment facilities treating over 174 Ml/d for over 500,000 customers in the UK. Severn Trent Services and its Bayoxide E33 have over 240 full scale systems awarded worldwide, with numerous installations throughout Europe.
Bayoxide E33 media applications:
Technical details Bayoxide E33 media:
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Technical details Bayoxide E33P media: