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Hi All, I have a coastal project where the sea level at high tide rises just below ground level; permeates easily through porous rock.I need to install a septic tank, but the whole tank would be below sea level at high tide. Does anyone know what the normal solution is here, firstly to stop backflow into the septic tank through then outlet, secondly that the outlet from the septic tank doesn’t go into the sea water below ground which will quickly disperse in the immediate area of the septic tank ; cause a smell/algae growth.Any suggestions would be much appreciated.
A few solutions/options. 1. Build your tank on higher ground. 2. have 2 tanks built. Closed systems. when one is full switch to tank B. Ad microbes to reduce all waste into nutrient form. no smell, no pathogen. a timer sprinkler on the tanks would empty quickly for reuse. (you may want a cistern to handle emergency water supply during a draught).3. Plant a very large garden between your tank and the coast.
Hi many thanks for your reply, I am not sure I understood having two tanks? Is the second tank to hold the water leaving the septic tank to add the microbes to? so the water can be pumped out & used for the garen?