Comparison between Two Urban Wastewater Primary Treatment Trains

This paper evaluated two different wastewater primary treatments of wastewater from the “Universidad Autonoma Metropolitana, Azcapotzalco Campus”, a conventional one integrated for coagulation, flocculation, sedimentation and filtration versus one alternative integrated for in-line coagulation to precondition to rapid filtration. The wastewater was from the Azcapotzalco Campus in Mexico City, and in both cases, we characterized the wastewater, measured: pH, conductivity, temperature, total dissolved solids, dissolved oxygen, ORP (Oxide Reduction Potential), turbidity, and COD (Chemical Oxygen Demand). Conventional treatment was slightly better treatment, but the alternative treatment represents saving in equipment, reactive, energy and time, so it was considered a viable technical and economic wastewater primary treatment.