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Sterilisation of discharge from wastewater treatment plants*
with the option of deactivating active substances (oestrogen etc.)
* European patent applied, not tested and not granted yet

General Information:
The UNO has declared the year of 2003 the “International Year of Water”. According to UNO forecasts, by the year 2025 two out of three people in the world will suffer from water scarcity. Europe will share the same fate and is acknowledging the extent of this development. Therefore, Europe as well has to take immediate action since the glaciers, being a precious reserve for potable water, have been diminishing at a rapid pace over the past few years due to the worldwide greenhouse effect. In the next years, this stress on existing supplies of water will increase. The access to this precious and crucial resource will become more aggravated due to the worldwide increase of population, potentially to a point where this famine will threaten all of mankind. already to have today approx. 1,2 billion people no entrance to drinking water. According to the calculations of experts and considering the fact that in the next few years 3 billion more people will be living on this planet, the supply of the developing countries with drinking water would have to be financed with approximately 20 billion Euros (~ 72 billion AED). As a matter of fact, just about half of this amount is currently invested in securing water supplies in developing countries.

Development:
Innovation in wastewater hygienisation of biological sewage treatment plants at most competitive prices without additional floor space required and without additional building measures.

Inlet and outlet system for circular sedimentation tanks with integrates ultraviolet light devices to degerminate and inactivate remaining unfavourable agents i.e. estrogens, antibiotics, etc. The installation of this device is located at both sides right before the outlet launder assembly of the plant. This system will be applied to the sewage treatment plant at Wallduern / Germany (Federal State of Baden-Wuerttemberg). The purified water can be used for either washing and cleaning purposes or in agricultural irrigation with absolutely no negative effects for human consumption of the produce.

Schematic presentation of an ultraviolet light appliance to degerminate and inactivate unfavourable agents such as estrogens.
The presentation shows the outlet system of a circular stainless steel launder assembly - make “Herwig” - with integrated ultraviolet light appliances for degermination. The installation of this device is located at both sides right before the outlet launder assembly of the plant (as can be seen as the blue lit windows). In the original launder assembly, the ultraviolet light devices are mounted crosswise to the groove and reach to the edge of it in order to avoid any water passing by without being ray-treated. Thus, a complete and thorough degermination and hygienisation of the water is guaranteed.
The purified water can be used for either washing and cleaning purposes or in agricultural irrigation with absolutely no negative effects for human consumption of the produce.
Zum EP-angemeldet Nr.: 02021171.0