OPERATION OF STATION FOR DEIRONING WEAK ACID UNDERGROUND WATERS WITH LOW ALKALI RESERVE

The paper studies the change of groundwater quality of the water supply system of the town of Rokуtno. It is established that the water aggressive to metal and concrete. Water containing elevated concentrations of iron, ammonia, hydrogen sulfide, iron bacteria. Researched optimal for the development of iron bacteria the values of bicarbonate alkalinity of the water. Conducted studies to determine optimal doses of soda ash, coagulant and flocculant. The optimal entry point of soda depending on the concentration of ammonium nitrogen. Given the mechanisms of purification from ammonium nitrogen with the participation of iron bacteria. The results of Х-ray microanalysis biologichesike film bioreactor. Studies with the scanning electron microscope shows the presence and in the bioreactor of iron bacteria of the genera Gallionella and Leptothrix. Shows the difference between the structure of the precipitation obtained by biological and chemical oxidation of iron. Developed and implemented in the working draft of the technological scheme of underground water conditioning unit with stabilization treatment.