Wastewater quality estimation through led spectrophotometry by means os statistical models

Resumen

Regulatory developments emanating from the European Union (EU) in the last decade in the environmental field haveplaced emphasis on halting water degradation and combating illegal discharges. Continuous, real-time, reliable informationabout the pollutants in the input sewage is key to fulfil EU environmental policies. The current methods of analysis makedifficult to carry out a real time analysis, since they are based on punctual samples, which are subjected to diversetreatments and require chemical substances in laboratory. This research work has been focused on the development of acost-effective equipment for the calculation of several variables such as COD, BOD5, TSS, P, TN, and NO3-N, fromspectrophotometry data (380-700 nm). Measurements are carried out in real time and without the need of chemical or pretreatment, with the aid of different statistical models all through a new spectrophotometer based on LED technology thatdoes not require the use of optical elements to work