Wastewater treatment handbook

34 Three-chambered septic tank THREE CHAMBERED SEPTIC TANK made of PE, one piece and seamless, with screw-on cover for inspection and sludge removal. Equipped with a poly- propylene inlet pipe section and a PVC outlet pipe sec- tion with neoprene gasket.T pipe in the inlet, 90° curve in the outlet. The system may be used for.................... equiva- lent inhabitants (E.I.) with a per capita daily water con- sumption ranging from 100 to 400 l. Dig a hole of appropriate dimensions and line a 10 cm thick sand layer at the bottom grain size 0-5 mm, 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 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 and floating materials do not reach the outlet curve bottom, or they will be washed out the system. Always contact speciali- sed companies for cleaning 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 drive-on cover reinforced concrete variable height variable height www.baygar.com