Advances in Water Treatment and Enviromental Management

Chapter 7EXPERT SYSTEMS FOR THEEXPLOITATION OF A PURIFICATIONSTATION: ORAGE (COMPUTER AIDFOR THE MANAGEMENT OFPURIFICATION)M Mansat (Greater Lyon Council, Lyon, France)Purification Station of MEYZIEU belonging tothe LYON Metropolitan AuthoritySince its creation in 1969, the Sanitation Department of the Lyon MetropolitanAuthority (COURLY) maintains preferential deelings with OTV Company (Omniumof Treatment and Valorization), a branch of the General Company of Water (C.G.E).This Company has indeed co-operated in the building of two important purificationstations of Courly:– ST FONS on the left bank of the Rhône river (700 000 Eq/inhab.)– PIERRE-BENITE on the right bank of the Rhône (475 000 Eq/inhab.).OTV is also running, on behalf of the Sanitation Department and together with BTACompany, the purification Station of ST FONS.Moreover, in 1988, OTV had been choosen as the pilot of a group including CGEEfor Electricity and MAIA-SONNIER for civil engineering and in charge of the buildingof a new purification Station in MEYZIEU.The filling of this station (capacity of 35 000 Eq/inhab. with a possibility of extentionto 50 000 Eq/inhab.) has been done by the end of 1989.This plant, modernly conceived and highly automated, has:• a classical pre-treatment,• a primary treatment made up of 2 lamellar decanting machines,• a biological treatment with 4 underwater bacterial filters made by OTVand called BIOCARBONE.The mud treatment is done via a thickening machine and 2 strip-filters aiming atdesiccating muds before their dispatching to the purification station in PIERRE-BENITE where they will be burnt.Moreover, the Sanitation Department, aiming at a strict management, tries to findmeans of curbing expenses at best and in particular its development problems.So it was a good opportunity for innovating in the field of purification stationsdevelopment, by putting together all skills of both OTV and COURLY’S Sanitation©1991 Elsevier Science Publishers Ltd, EnglandWater Treatment—Proceedings of the 1 st International Conference, pp. 61–6661