Evaluation de la charge virale dans les eaux d''une station d''epuration biologique au moyen de deux methodes de concentration de virus par adsorption-elution sur poudre de verre ou sur microfibre de verre

Two methods of adsorption-elution on glass powder or on glass microfibre have allowed to determine the virus quantity at the entrance and at the exit of a biologic sewage farm. Almost the same results are obtained by comparing the two techniques. The frequency of virus isolation is very important both in the affluent and in the effluent. The rate of reducing the quantity of virus in the effluent is in the region of 78%. The identification of the virus has shown the systematic existence of Enterovirus. If one has to choose between the two techniques, the method of adsorption-elution on glass powder is more advisable, because there is no problem of blockage.