Drinking Water Treatment with GeoSIL 

Significant attention has been given over the last few years to the disinfection of drinking water.

New analytical techniques and a broader understanding of aqueous chemistry has highlighted a significant problem in the use of  traditional disinfection techniques, namely the formation of trihalomethanes (THM's), which have now been shown to be hazardous to human health. GeoSIL offers a complete answer to the many problems encountered in treatment of drinking water.

GeoSIL is an oxidant which behaves as a powerful disinfectant in drinking water and acts without causing tastes, odours or harmfull by-products. It is effective in both clear and turbid water, and has a rapid rate of reaction.

Furthermore, GeoSIL can be employed as a sole disinfectant.

Other disinfectants such as UV or ozone are limited in their application by their high capital outlay. UV can only be effective where the water is of sufficient clarity and depth to achieve light penetration and therefore disinfection. Also, no form of residual is achieved with either Ozone or UV to maintain microbiological control. These mechanical systems generally have high associated running costs. For existing UV or ozone systems it will be used to provide a reliable and safe residual.

The other alternative, Chlorine Dioxide, has also limitations with capital installation costs and fairly expensive running costs, and also presents significant hazards in terms of handling.

Chlorine's effectiveness is limited as a microbiocide since it is pH dependant. It dissociates to form hypochlorite ions as the water pH increases. 

Disinfection of Drinking Water Plants with GeoSIL 

The remarkable long-term action of  GeoSIL makes it the disinfectant of choice for drinking water. It is particularly effective in long drinking water pipes and/or piping systems with pocket formation or prolonged residence times.  GeoSIL leaves no taste or odour in the treated water.

The required quantities of  GeoSIL and the minimal contact time in the drinking water reservoirs depend on the raw water quality, on the quantity and kind of pathogenic germs, on the temperature and on the length and quality of the drinking water tubes.

The following values are valid for the minimal contact times in drinking water reservoirs :

q  The maximum concentration of  GeoSIL required for the treatment of drinking water is 35 mg/l (ppm). The minimal residual concentration in drinking water should be 1 - 5 mg/l (ppm).

q       An on-line fully-automatical GeoSIL^® MEASURING AND MONITORING unit is essential for dosing and monitoring the  GeoSIL   content in waterworks.

q       The disinfection of drinking water in a drinking water plant is normally carried out in two steps:

q       Depending on the quality of the raw water 5 - 35 mg/l (ppm),  GeoSIL   is added to the raw water proportionally to the raw water quantity by means of a proportional dosing pump which is connected to the raw water pump.

q       After filtration and settling, the treated drinking water is lead to the fresh water reservoir.

q       By a test water taking from the fresh water reservoir the water is lead to the GeoSIL^® FULLY-AUTOMATIC MEASURING AND MONITORING UNIT for analyse purposes.

Additional  GeoSIL is added to the fresh water reservoir by means of a dosing pump should the  GeoSIL concentration drop below the  GeoSIL content of 1 - 5 mg/l (ppm) prescribed for system security reasons.

 GeoSIL is a ideal oxidant for potable water disinfection particularly as it is effective as a broad spectrum microbiocide and virucide in all types of water conditions without creating taste, odour or harmful by-products.

GeoSIL provides significant technical benefits over alternative treatments such as chlorine. With many applications,  GeoSIL is the most economical treatment option given a set of performance criteria. It is also important to note  that  GeoSIL will often perform tasks that other treatments will not do at any price.