The existing treatment plant was an old brick-built chamber, which no longer met with modern requirements, and so required replacement. Owing to the unsafe depth and the presence of a brick and flint wall very close by, the client wanted a specialist – and Premier Drainage Solutions fitted the bill perfectly, as an approved installer of Biorock treatment plants (which the client had already identified as the best solution product-wise).
After our site visit, it was clear the client had already conducted research into which system should be installed, so with the help of the technical team at Biorock, the correct sizing of plant needed was carried out. A 3000L primary tank with a 2000L Ecorock treatment plant was specified. With this type of solution, the outfall from the tank goes straight into the bolt-on pumping station, a very simple set-up with a float switch on the new pump. The effluent is then pumped into an existing outfall.
As the client had opted to install the necessary amendments to the existing drainage himself (redirecting the last boundary manhole into the newly installed tank, which was in a different location to the old septic tank), we were tasked with the job of installing the new sewage treatment plant.
After the tank installation had taken place, the area of the garden where the new treatment plant was located was backfilled using dug soil, to its previous ground level. During this process, we also installed three risers on the tank for the inspection chambers – and, of course, the job was finished off by seeding the soil, so the lawn would grow back and the garden would be restored to its former glory.