Smaug
Guest
I note on other threads that some believe that formaldehyde will kill a Septic Tank. I understand that the reasoning is that the chemicals will kill the bacteria that make a Septic Tank work. However, I live off mains drainage & use a Septic Tank for the house foul water & I have on a couple of occasions emptied my own cassettes into the house tank without a problem.
I suspect this may be due to 2 things;
1/ I use less than the recommended dose of Elsan Blue in teh Cassette
2/ my sytem contains 2 tanks, a settlement & a fermentation tank, each of about 1000 gall (they are large brick chambers) & I have only put a cassette load (5-10 gall?) in about once or twice a year.
Thus I believe that in SMALL quantities, there is no problem, but where campers congregate & the tank is subjected to several cassette loads (or more) a day for several weeks I am sure that the concetration of formaldehyde will be significant.
Nevertheless, once my current carton of Elsan is gone, I shall be switching to Bio washing liquid. All I'm trying to do is help people understand why a little now & again is not fatal, but we must ensure that we don't swamp the popular places & cause problems which will get us banned.
I suspect this may be due to 2 things;
1/ I use less than the recommended dose of Elsan Blue in teh Cassette
2/ my sytem contains 2 tanks, a settlement & a fermentation tank, each of about 1000 gall (they are large brick chambers) & I have only put a cassette load (5-10 gall?) in about once or twice a year.
Thus I believe that in SMALL quantities, there is no problem, but where campers congregate & the tank is subjected to several cassette loads (or more) a day for several weeks I am sure that the concetration of formaldehyde will be significant.
Nevertheless, once my current carton of Elsan is gone, I shall be switching to Bio washing liquid. All I'm trying to do is help people understand why a little now & again is not fatal, but we must ensure that we don't swamp the popular places & cause problems which will get us banned.