This paper aimed to develop a system of an automated biogas burner which records the amount of biogas burnt by a biogas low flow system. The biogas produced in miniSST (mini station of sewage treatment), biodigestors on a rural and residential, where there is a low production of biogas doesn`t economically justify its energy, it is only a case of an anaerobic waste treatment. The registration system of burnt biogas correctly calibrated may be homologated to obtain carbon credits. In these systems, of anaerobic waste treatment, due to the low flow of biogas discharged into the atmosphere includes methane it has a destructive potential 21 times greater than the CO2.The system developed was analyzed and the effects of the disposed gas produced by the burner converting it in CO2 proved to show less environmental impact. The automated system used in the small sewage treatment plants was almost insignificant when analyzed separately but when taken into consideration several systems working together there was a considerable positive environmental impact.