Spherical Septic Tanks
Four decades on from the first Pre Fabricated GRP Septic Tank and still going strong.
Domestic tanks start @ 2800 litre which are suitable for a single two bedroomed property accommodating 3 to 4 persons. The 2,800L to 6,000L (3 to 22 persons) range are generally of a spherical design.
These tanks have many advantages over and above some of the other products available, please see the following details. In addition to The EN12566-1 Standard these tanks are CE marked for use throughout Europe.
These tanks offer a shallow dig excavation over coming difficult ground conditions which appear to be ever more common place. What ever your Off Mains drainage requirement is, make Synergy your first call. The choice of the Professional Installer!
Cylindrical Septic Tanks
Larger capacities of up to 54,000L are also available, and are of a cylindrical design.
Given suitable ground conditions, the Septic Tank still provides an economic solution to domestic foul waste disposal.
Septic Tank Selection / Sizing.
When sizing Septic Tanks the industry refers to P or Pe meaning Population Equivalent. This does not always mean the number of actual persons to be served i.e. 10 People working in an office, is a vastly different to 10 Senior citizens in an Old Peoples Home.
Sizing for Domestic Septic Tanks.
For ‘domestic’ Septic Tank sizing take the Pe x 180 Litres + 2000 Litres.
Example 4 Pe x 180 + 2000 = 2720 Litres. This is the minimum capacity Septic Tank that may be installed on a domestic residence to comply with Building Regulations.
The British Water Document, Flows and Loads – 3 states the following:-
A house with 3 bedrooms = minimum of 5 Pe. Add a further 1 Pe for each additional bedroom i.e. 4 bedrooms = minimum 6 Pe (5+1) 5 bedrooms = minimum 7Pe (5+2)
Synergy Robusta Spherical Septic Tanks are available in the following capacities:-
2800 Litre up to 4 Pe i.e. a 2 bedroom domestic property
3800 Litre up to 10 Pe i.e. a 8 bedroom Property, or 2 x 3 bedroom Properties
4600 Litre up to 14 Pe i.e. a 12 bedroom property or 2 x 4 bedroom, or 3 x 3 bedrooms.
Synergy also offers a range of shallow dig Septic Tanks i.e.:-
Synergy Robusta Low Profile Septic Tanks.
These are available in three capacities:
P4 to serve a 2 x bedroom propert
P9 to serve up to a 7 x bedroom property
P16 to serve up to 2 x 4 bedroom + 1 x 3 bedroom properties.
The Robusta Low Profile Septic Tanks are suitable for sites that may have difficult ground conditions, or where access is only available with a Mini Digger for example.
The additional benefits of these tanks is they are suitable for granular backfill surround (Dry sites Only) also they have filtered outlets which further treats the effluent reducing the Suspended Solids content in the final effluent extending both the life, and performance of the soakaway.
All Synergy Robusta Septic Tanks have been independently tested and approved to EN12566-1. Additionally these products are CE marked confirming our commitment and investment in providing a quality product. Synergy the choice of the Professional Installer.
Synergy Wastewater Treatment Products.
For drawings, please visit the downloads page