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Definition English:
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A concept that covers the removal of coarse solids (in the railing), sand (in the sandbox) and sedimentable solids (in the primary decanter), as well as the digestion and removal of moisture from this sludge in the digester and drying bed, respectively. In primary treatment, physical type operations are employed, such as the removal, in grating, of the portion of suspended or floating matter found in the sanitary sewage. (Free translation from the original: https://portaleses.icict.fiocruz.br/transf.php?id=00006504&lng=en&script=thes_chap) |