There was investigated the treatment possibility of samples taken from Safid Rad and Shir Biyar rivers, from toxic components by physical-chemical methods. It was determined that the addition of 0.25 q/l Fe(III) shape of bentonite samples into the water enviranment decreases the quantity of toxic components in the samples signifijantly. Further rise in bentonite’s quantity doesn’t change the remaining quantity of toxic components in river waters. The otained experimental results show that containing of toxic components in the quantity of coaqulant 5 mq/l iç completely approached to zero and sedimitation process of formed agregates in the sorbtion- coaqualadion projess is accelerated. Technological scheme of the prerification process was determined by us.