5 ESSENTIAL ELEMENTS FOR SEDIMENTATION FILTRATION PACKAGE

For the sewage sludge in the sewage treatment plant, the commonest sludge includes Main and secondary sludge, the place the key sludge could be the sludge collected from the primary clarifier, as well as the secondary sludge will be the surplus-activated sludge (Nielsen and Stefanakis 2020). As with the onsite sanitation system, the sludge is recog