Sewage Treatment Plant and Septic Tank Upgrades - HOME
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Settlement Tanks for BIOROCK Treatment Plants

The BIOROCK Sewage Treatment Plant follows a settlement tank made for us by Conder - the 'Crystal' Septic Tank

It is also possible to use an existing 2 chamber septic tank as the settlement tank. It needs to be the correct size and be watertight.  In this case you would just order the BIOROCK plant itself. The settlement tank is fitted with an effluent filter.

All tanks are supplied with neck extensions which are cut to fit in order to match their outlet with the inlet to the BIOROCK (600mm inlet invert)

These settlement tanks are available either as :-

Class 1 - Concrete base, straps and granular backfill
Class 2 - Full concrete base and surround
 
These are then available as:
 
Single Chamber - 10:10:10 final effluent standard
Twin Chamber (same tank as above but with a baffle wall inside) - 5:5:5 final effluent standard

The Class 1 settlement tanks are more expensive to buy, as they are thicker fibreglass, but cheaper and easier to install - the choice is yours.

All the Conder settlement tanks have a 30 year tank warranty when installed as per the installation manual (see DOWNLOADS below).

Sizes are as follows:- 

BIOROCK Model

Settlement Tank Size Required (size below the water line)

BIOROCK 6

2800 Litres

BIOROCK 10

3600 Litres (up to 8 persons) 4500 Litres (over 8 persons)

BIOROCK 15

6000 Litres

We can also supply full drawings for you to build your own raw sewage settlement tank using concrete and blocks.  This is useful for the Isle of Man and the Scottish Islands, where transportation of large tanks is expensive.  As the BIOROCK fits on pallets, they are relatively cheap to transport.

For larger BIOROCK modular systems, the settlement tanks are sized individually.

Crystal Tanks - New Septic Tank picTANK DRAWING DOWNLOADS 

2800 Litre  used with the BIOROCK 6
3600 Litre used with the Biorock 10 for up to 8 people using the system
4500 Litre  used with the BIOROCK 10 for over 8 people using the system
6000 Litre  used with the BIOROCK 15
 
Installation Manual for the Class 1 Settlement Tanks
Installation Manual for the Class 2 Settlement Tanks
 
If required, as an option, we can also supply the BIOROCK settlement tank from Germany.  This is a polyethylene tank in the same mould as the BIOROCK, but it is much more expensive than the Conder tank.


Click here for the BIOROCK BROCHURE

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