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Technical file PREFABRICATED WATER DEPURATIONS PLANTS MODULAR RING TOTAL OXIDATION PLANTS FROM 15 TO 250 EQUIVALENT POPULATION OXI/A series WHAT ARE TOTAL OXIDATION PLANTS OXI/A SERIES Modular ring prefabricated plants type EURO MEC OXI/A series for residential areas from 5 to 250 equivalent population are dimensioned in order to guarantee the acceptance limits to the discharge foreseen by the Directive 91/271/CEE for discharge in superficial water, principally composed of a cyilindrical tank vertical axe of biological oxidation equipped with self-polishing membrane air diffusers and a final sedimentation with automatic sludge recycling. The supply includes the blower type side channels for the production of compressed air and the general command and protection electric panel. By request the modular ring prefabricated plants type EURO MEC OXI/A series can be executed with pre-treatment realised in a suitably dimensioned gross screening tank type Imhoff (OXI/AS series). HOW TOTAL OXIDATION PLANTS OXI/A SERIES WORK Modular ring prefabricated plants type EURO MEC OXI/A series for residential areas from 5 to 250 equivalent population are divided into the following sections: one for biological oxidation, where by means of aeration through air insufflation, happens the complete reduction of sewage organic substance; one of sedimentation, 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 pneumatic ejector to the oxidation, respect to overflow sludge, coming from biological increase, which is periodically extracted. With the use of timers, that command the on/off of the blower, the functioning of modular rings prefabricated plants type EURO MEC OXI/A series can be fully automised. Modular ring prefabricated plants type EURO MEC OXI/AS series foresee before the biological treatment a sewage gross screening by means of an Imhoff tank, in which gross and sedimentable substances are kept from the inlet sewage. USED MATERIALS Tanks : Shafts highly resistant reinforced vibrated concrete concrete (if requested class D 400 cast iron) galvanised steel and polyethylene stainless steel AISI 304 SPECIFICATION OXI/A: “Supply of prefabricated total oxidation depuration plant made of reinforced concrete type EURO MEC OXI/A series composed of tanks vertical axe made of modular rings to seal on site divided into biological oxidation and final sedimentation, complete with sewage inlet and outlet connection pipes, inspection shafts made of concrete, self-polishing membrane air diffusers, command and protection electric panel with timer and all other electromechanical parts for the correct functioning.” OXI/AS: ““Supply of prefabricated total oxidation depuration plant made of reinforced concrete type EURO MEC OXI/A series composed of tanks vertical axe made of modular rings to seal on site divided into initial gross screening type Imhoff , biological oxidation and final sedimentation, complete with sewage inlet and outlet connection pipes, inspection shafts made of concrete, selfpolishing membrane air diffusers, command and protection electric panel with timer and all other electromechanical parts for the correct functioning.”

Technical file STANDARD PRODUCTION DESCRIPTION Gross screening type D4 H4 Total weight 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, which are of 150 l/inhab. g. and of 60 g BOD5/inhab. g. Initial gross screening type Imhoff series OXI/AS