This is an archival version of the original KnowledgePoint website.

Interactive features have been disabled and some pages and links have been removed.

Visit the new KnowledgePoint website at https://www.knowledgepoint.org.

 

Revision history [back]

click to hide/show revision 1
initial version
Laurent LeHot gravatar image

From fresh experience in the field:

Both are acceptable to make 0,5% (disinfection of PPE, material and facilities and gloved hands washing) and 0,05% (bare hands washing).

HTH is generaly found with a higher Chlorine concentration (65-70%) that NaDCC (50-55%). With the amount needed to run properly a Treatment Centre with several tens of beds, you will need in any case a reliable supply chain and sometimes you will have to change the product you are using.

The main problem with HTH is the calcium sediment (still with a high chlorine content): 1) You have to prepare the mother solution in a specific additional recipient to allow the sedimentation to take place

2) You will have to deal with the remaining "mud" and to dispose it somewhere. It can quickly represent an important enough volume to become a problem (infiltration pit clogging) and so you have to consider where to dispose it properly. Consider that evacuating any kind of waste from an Ebola Treatment Centre can have a negative impact on the image of the centre in the population and for authorities (even powder milk tin can used for coffee break can be considered as "a waste from the ebola yard

3) If you use a small gravity distribution system (which is a very convenient to distribute chlorine solution in high risk zone), the remaining calcium sediment will eventually clog pipes and taps.

4) For all the sprayers, it will also be quickly a problem (easy to counter with a weekly maintenance with chlorine, but again, any activity run in high risk zone is an additional load of work and risk)