Comparative overview of primary sedimentation-based mechanical stage in some Romanian wastewater treatment systems

摘要: Nowadays, wastewater (WW) treatment facilities are considered significant exposure pathways for solid particles, and also concerns of any quality conscious manufacturer. Most particles have some forms organic coating either used as active material or to suspend and/or stabilize different present materials, having increase in toxicity that must be reduced, sometimes even totally eliminated, especially if effluent is discharged directly surface water, distributed through industrial water supplies. Representatives providing innovative technologies, comprehensive supports expertise sludge field known, each one using modern technology facilities. Mechanical indispensable primary steps both municipal WW applications, its main goal being separation floating, settling suspended materials (especially into a sedimentation-based step). The aim this work comparatively the performance solids removal conventional mechanical stages, those based on sedimentation, sedimentation-like operations applied Romanian urban plants (serving two towns with ca 18,000 inhabitants), (deserving industries vegetal food processing chemicals' manufacturing) additional information valorisation separated improvement possibilities.