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TCDO/Chlorine Dioxide Water Treatment Systems
Water Treatment Chemicals

TCDO (tetrachlorodecaoxide) and chlorine dioxide are effective water treatment chemicals for a range of dosing applications where humans from personnel to members of the public come into direct contact with water. Gaffey supply a selection of TCDO/chlorine dioxide water treatment chemicals - find out more below or get in touch with any enquiries about any of these.

Where are TCDO/chlorine dioxide water treatment chemicals used?

TCDO/chlorine dioxide water treatment chemicals are a specialist treatment option with general applications where humans come into contact with water. This includes pool water treatment, but also shallow areas such as water play & features, as well as wet surfaces in and around spa pools.


The WAPOTEC Hydroxan chlorine dioxide (TCDO) dosing system is supplied in a 25kg drum and can be continuously dosed via a peristaltic pump, similarly to PAC flocculant chemicals.

Features of the WAPOTEC Hydroxan system include:

0.1-0.2 ppm chlorine dioxide residual throughout the pool circuit.

Maximum pressure 1.5 bar.

Flow rates between 10-800 cubic metres per hour.


DesoPur TCDO agent is a 25kg drum for use in filter media regeneration and balance tank cleansing applications. It releases a controlled quantity of chlorine dioxide and is suitable for use in higher concentrations to regenerate activated carbon media in ozone systems and to treat Cryptosporidium contamination.

Apply to filtration vessels using the DesoClenz treatment kit for dilution and distribution throughout the filter bed. This is available through service partners - contact Gaffey for more information.

LegioCid Plus Spa Pool Decontamination Kit

The LegioCid Plus spa pool decontamination kit is a complete kit to clean the wet surfaces of a spa pool, ranging from the internal plumbing and balance tank, to the filters and air lines, using a controlled dose of chlorine dioxide to remove body fats and biofilms overnight or in around six hours.

Each kit is suitable to treat up to 730 gallons of spa pool water and to tackle pathogens including Legionella, Pseudomonas Aeruginosa and Cryptosporidium/Giardia parasites. For more information about this or any of the products mentioned above, please download the product data sheets or contact the Gaffey Technical Services team directly who will be happy to help with your enquiry.

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