Compact biological waste treatment systems types SED and SED-A

In order to meet the water treatment needs of individuals, small corporations and SMEs, BIOTECH Engineering has developed, tested and patented two very easy to use, compact, high performance waste water treatment systems.

The principal characteristic of both of these systems is that, in addition to the actual treatment unit, they also contain a primary settling tank, a secondary settling tank and an excess sludge storage tank, all within the same housing.

The primary settling tank : This compartment is located at the head of the station and allows us to avoid the need to install a septic tank and a grease trap upstream of the station. In fact, the settling tank separates the liquids (which are sent for treatment) from the grease and heavy matter that remains trapped in the settling tank, which is emptied once a year.

The secondary settling tank and the excess sludge storage tank : during separation of the treated water, the biological waste water treatment process gives rise to what could be called a "by product" consisting principally of inert matter, mineralised matter resulting from the purification process, and the biological medium (active and broken down). The amount of such sludge produced by the process itself obviously increases over time, and the amount contained within the medium must be checked and controlled if we are to avoid completely "choking" biological activity and causing significant amounts of sludge to be carried away in the treated effluent and a reduction in the efficiency of the waste water treatment system. The secondary settling tank thus separates the sludge from the treated effluent. The sludge storage tank allows the excess sludge to be removed from the medium and must be emptied once a year.

Our SED-A system not only fully complies with the requirements of the Walloon, the Flemish and European regulations concerning the quality of effluent discharge, but is also adaptable, as its capacity can be increased by 40 percent through the addition of a bacterial bed.

Our SED system, for its part, is a high performance system and its efficiency is significantly higher than that currently required by the Walloon and the Flemish Region. It can be used in sensitive areas where more severe restrictions apply. It can also be used for heavily charged water whose treatment using traditional extended aeration techniques would require much larger installations to be provided or, more simply, because you want to provide maximum protection to the environment.

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