Septic Tanks / Waste Water Treatment

Septic Tanks

Ref. No 2000ST Length (mm) 2,080 Width (mm) 880 Height (mm) 1,700 Nominal Capacity 2,000 Litres

Instructions for Installing Septic (and Rainwater) Tanks

General
The tanks are made of one piece of high quality polyethylene (LLPDE). This makes them very rigid and they are always checked by quality control. Polyethylene has the major advantage that it is highly resistant to the majority of chemicals.

Operation
A septic tank takes waste water from the toilets (no rainwater). In the tank, the liquid and solid components separate. The heavier elements sink, forming a sludge; the lighter elements form a crust on the surface. This crust protects the contents of the tank from oxygen. The fermentation process that develops with anaerobic bacteria converts the solid parts into liquids. This process reduces the amount of sludge. The liquid thus formed is discharged into the drain.

Installation
The tank is placed underground and preferably as close as possible to the source of the contaminated water. To do this, dig a hole large enough to take it, so the tank can be installed without problem. The bottom of the hole should be lined with a 20cm thick layer of stabilised sand. Lower the tank into the pit and connect the pipes. Fill the tank with water while at the same time filling the space surrounding the tank (25cm) with stabilised sand. If the depth is greater than 30cm between the top of the tank and the surface of the ground, or if the tank is located in a place where vehicles pass over it, a concrete slab must be placed around the cover.
Caution: This slab must rest on the stabilised sand around the tank and not on the tank itself.

Maintenance
In accordance with the provisions of the Vlarem II Bis legislation, the septic tank should be cleaned out annually. After it has been emptied the tank should be filled with water again.

Guarantee
Our septic tanks are guaranteed against all manufacturing faults, on condition that the installation instructions have been strictly observed.

Waste Water Treatment Plant