Technical file PREFABRICATED WATER DEPURATIONS PLANTS MODULAR CIRCULAR TANKS TOTAL OXIDATION PLANTS FROM 700 TO 3000 EQUIVALENT POPULATION OXI/M series SEWAGE INLET MANUAL BASKET SCREEN FINE SCREENING SAND SEPARATOR FINAL CHLORINATION 10 INSPECTION SHAFT 11 SLUDGE RECYCLING 12 THICKENER 13 SAND INSPECTION SHAFT 14 COMMAND CAB ALLO SCARICO BY-PASS IMPIANTO WHAT ARE TOTAL OXIDATION PLANTS OXI/M SERIES Prefabricated circular tanks plants type EURO MEC OXI/M series for residential areas from 700 to 3000 people equivalent are used for the sewage water depuration. They are composed of two circular concentric tanks, that constitute the biological oxidation section, equipped with aeration system with self-polishing membrane air diffusers of a suitable power and a final sedimentation section. The tanks are made of modular panels in reinforced concrete sealed between them and positioned on reinforced foundations. In the external circular sector can be located the following sections: pre-treatment, pre-denitrification and sludge thickening. HOW TOTAL OXIDATION PLANTS OXI/M SERIES WORK In the standard model prefabricated circular tanks plants type EURO MEC OXI/M series are expected to be with a pre-treatment section with manual screening (in option even mechanical), that, if necessary, is followed by a sewage lifting plant. After the pre-treatment section, the sewage is send to the external tank of the depuration plant in which it happens: sand and oil separation, pre-denitrification and biological oxidation by means of aeration through air insufflation highly efficient; the system is fed ARRIVO LIQUAMI GREZZI After that treatment, sewage is send to the final sedimentation section, where sludge separation is obtained, which settle on the bottom, and skimming clarified water is send to the discharge. Active sludge, collected from the bottom of the sedimentation section, is recycled in continuous by means of a submersible electropump to the oxidation, respect to overflow sludge, coming from biological increase, which under static thickening, is periodically extracted. The static sedimentation is produced till model OXI/M 1500, for superior models the final sedimentation section is accomplished with a peripheral traction scraper bridge, in order to automatically permit the sludge collection and the floating substances collection. The prefabricated circular tanks plants type EURO MEC OXI/M series are supplied with all devices, which guarantee the automatic functioning without supervision and, by request, can be integrated with measuring, recording and alarm instruments.

Imp'nnti prefabbricoti depurazione acque STANDARD PRODUCTION Flow diagram @ Sand inspection - Sewage line — — Sludge line ---Water line ----Sand line Modular circular tanks total oxidation OXI/M series For discharge in superficial water - Directive 91/271/CEE The above written data are given as information. The Society EURO MEC S.r.l. reserves the right to change them in every moment The plants can be supplied with hydraulic flow rates and organic loads even different from the ones in the schedule,