Wastewater treatment handbook

36 Biological Imhoff tank BIOLOGICAL IMHOFF TANK made of PE, one piece and seamless, with screw-on covers for inspection of the central compartment and of the main one, and for sludge removal. Equipped with a polypropylene inlet pipe section and a PVC outlet pipe section with neoprene gasket.T pipe in the inlet,90° curve in the outlet. The system may be used for.................. equivalent inhabitants (E.I.) with a per capita daily water consumption ranging from 100 to 400 l.It is advisable to use it only for black water treatment in order to remove settable organic matter with an appro- priate retention time. It is possible to foresee a venting pipe. Dig a hole of appropriate dimensions and line a 10 cm thick sand layer at the bottom, grain size 0-5mm, dampen the sand and level it. Lay the plant down.Connect the septic tank’s outlet pipe to an inspection chamber by means of a Ø................. pipe. Connect the general discharge pipes to the septic tank’s inlet pipe by means of a Verify that installation has been correctly carried out. Periodically remove excess sludge and grea- se from the tank. Periodically control that there are no obstructions in inlet or outlet. Periodically M O D A L I T A ' D I I N T E R R O a l l e g a t o 1 polypropylene or PVC pipe having Ø.................. Fill the tank with clean water and proceed with dampened sand filling of the gaps around it. Finish with a 5 cm thick light concrete casting (or with reinforced concrete in case of car passage on top of the plant ). Make sure that covers are always inspectionable. control that sludge does not reach the settling tank bottom, or it will be washed out the system. Always contact specialised companies for clea- ning operations. INSTALLER ENGINEER (SPECIFICATIONS) USER I N S T A L L A T I O N I N S T R U C T I O N S a n n e x 1 variable height sand cm 10 sand cm 10 PVC manhole light concrete reinforced concrete max 40 cm thick earth layer walk-on cover PVC manhole reinforced concrete WALK-ON SOLUTION DRIVE-ON SOLUTION www.baygar.com