Process for total sewage treatment

Claim 1

A CONTINUOUS ACTIVATED SLUDGE SEWAGE TREATMENT PROCESS COMPRISING, IN CONTINUOUS MANNER, INJECTING RAW SEWAGE LIQUID INTO A RESFERVOIR PROVIDING A SINGLE HORIZONTAL CLOSED LOOP PATH, CIRCULATING THE LIQUID AROUND SAID PATH AT A SPEED OF AT LEAST ABOUT 0.8 FEET PER SECOND AND SUFFICIENT TO AVOID SUBSTANTIAL SETTING OF SLUDGE SUSPENDED THEREIN, AERATING THE LIQUID IN SAID PATH TO PROMOTE AEROBIC DECOMPOSITION OF THE SEWAGE AND FORMATION OF NITRATE COMPOUNDS IN SAID LIQUID, CIRCULATING THE AERATED LIQUID AROUND SAID PATH FOR A FIRST DISTANCE IN WHICH SAID DECOMPOSITION PROCEEDS UNTIL THE LIQUID IS SUBSTANTAALLY DEVOID OF OXYGEN AT THE POINT OF RAW SEWAGE INJUCTION, CIRCULATING THE LOQUID CONTAINING NITRATE COMPOUNDS AND RAW SEWAGE AROUND SAID PATH FOR A SECOND DISTANCE IN WHICH DENTRIFICATION PROCEEDS IN SAID LIQUID UNTIL IT REACHES THE NEXT POINT OF AERATION IN SAID PATH, CONTINUOUSLY REMOVING TREATED LIQUID, FOR CLARIFICATION AND SETTLING OF SLUDGE THEREIN, AT A RATE APPROXIMATING THE RATE OF INJECTION OF THE RAW SEWAGE LIQUID, DISCHARGING THE RESULTING CLARIFIED LIQUID EFFLUENT AND RETURNING AT LEAST A PORTION OF THE SETTLED SLUDGE TO THE LIQUID IN SAID RESERVOIR, THE AVERAGE RETENTION TIME OF THE LIQUID IN THE RESERVOIR BEING AT LEAST ABOUT 24 HOURS, SAID SECOND DISTANCE BEING AT LEAST ABOUT 10% OF THE SUM OF SAID FIRST AND SECOND DISTANCES.