PERFORMANCE OF A PILOT PLANT FOR CONDITIONING OF SEPTAGE TO BE TREATED IN A SEWAGE TREATMENT PLANT

This work evaluated the behaviour of a Pilot Plant to receive and pre-treat septage collected transported by trucks from decentralized sewage treatment systems greasy residues grease traps. was installed at Brasília Sul Sewage Treatment composed grid, equalization tank, rotating screen, crusher Central Unit for separating settleable solids (SetS) floating solids, mainly oils greases (O&G). The consists an adaptation aerated grit chamber intermittent loads dumped trucks. tested in four operating modes investigate influence presence aeration initial third length its chamber: Mode 1 - without receiving only septage; 2 with 3 mixtures 4 septage. It verified that there is tendency behave better when residues. Comparing Modes 2, showed 6% more O&G removal than 1, on average. 4, reached 32% 3, However, use not statistically significant. average reduced 72% 90% SetS 95% 4.