Originally Posted by RaymondR
I notice that some of these onboard treatment units use chlorine bleach to do the sanitizing. Even though it's massively diluted and probably does no harm I'm more uncomfortable with dumping chemicals into the environment
than I am with raw sewage.
my last boat
had a type 1 electrasan system . All it needed was electricity to sanitize .
The process starts with salt water
in the treatment tank.
NaCl –> Na Cl- Sodium Chloride is a strong electrolyte so it
exists in water as sodium and chloride ions.
H2O –> H OH- Through hydrolysis, water breaks into hydrogen
ions and hydroxyl ions.
The electrode pack is energized during the treatment cycle and electricity passes through the conductive salt water
. Hypochlorous acid, a powerful bactericide and oxidizing agent, is produced on the surface of the plates.
At the Anode:
2Cl- OH- H –> HCl HOCl 2e- Hydrochloric acid and hypochlorous acid are produced, liberating two electrons.
At the Cathode:
2e- 2 H 2Na 2OH- –> 2 NaOH H2 The two electrons, hydrogen ions, sodium ions and hydroxyl ions combine to produce sodium hydroxide and some hydrogen.
The Net Reaction is:
2Cl- 3OH- 3H 2Na –> HCl HOCl 2NaOH H2
With constant mixing from both motors, the products are mixed together for continued reactions.
NaOCl H2O –> NaOH HOCl Hypochlorous acid (HOCl) is formed when sodium hypochlorite reacts with water.
HOCl XXXX –> HCl XXXXOx Hypochlorous acid reacts with soil, dirt, and bacteria giving up its oxygen; leaving hydrochloric acid.
HCl NaOH –> H2O NaCl The hydrochloric acid reacts with the sodium hydroxide to form salt
I have a feeling the chlorine liquid will have a similar end result of being inert when actually discharged.