FORMATION OF ANAEROBIC ZONES IN SURFACE-FLOW CONSTRUCTED WETLANDS UNDER DIFFERENT CONTENTS IN ORGANIC MATTER IN BOTTOM SEDIMENTS

The functioning of a phyto-treatment facility (FOS) of an open type in the territory of Moscow was studied. The functional zones of the FOS are distinguished by the content of organic matter in bottom sediments and the content of dissolved oxygen in water. The relationship between the content of organic matter and the oxygen regime of FOS was revealed.