Tank washing system

Claim 1

A METHOD FOR WASHING THE INTERIOR SURFACES OF TANKS, SAID METHOD COMRPISING THE STEPS OF (1) IN A PRERINSE CYCLE, DIRECTING JETS OF WATER AGAINST THE INTERIOR SURFACES OF A TANK TO BE WASHED, THEREBY REMOVING GROSS AMOUNTS OF SAID FROM THESE SURFACES; (2) CONTINUOUSLY WITHDRAWING PRE-RINSE WATER MIXED WITH SOIL FROM SAID TANK; (3) CONTINUOUSLY PASSING THE WITHDRAWN MIXTURE OF PRE-RINSE WATER AND TANK SOIL THROUGH MECHANICAL SEPARATING MEANS TO GENERATE A STREAM OF CLEAN WATER AND A STREAM OF WASTE LIQUID MATERIAL; (4) CIRCULATING THIS CLEAN WATER AS JETS OF WATER DIRECTED AGAINST THE INTERIOR SURFACES OF SAID TANK AND THEREAFTER WITHDRAWN FROM THE TANK AND MECHANICALLY CLEANED FOR THE DURATION OF SAID PRE-RINSE CYCLE; (5) REMOVING THIS WATER FROM CIRCULATION IN CLEAN CONDITION AND CONSERVING THE SAME; (6) IN A WASH CYCLE, DIRECTING JETS OF WATER AND DETERGENT MIXTURE AGAINST THE INTERIOR SURFACES OF SAID TANK, THEREBY REMOVING FINE AMOUNTS OF SOIL FROM THESE SURFACES; (7) CONTINUOUSLY WITHDRAWING WASH WATER, DETERGENT, AND FINE SOIL MIXTURE FROM SAID TANK; (8) CIRCULATING THIS MIXTURE AS JETS OF LIQUID MATERIAL DIRECTED AGAINST THE INTERIOR SURFACES OF SAID TANK FOR THE DURATION OF SAID WASH CYCLE; (9) REMOVING THIS LIQUID MATERIAL FROM CIRCULATION AND CONSERVING THE SAME IN SOMEWHAT EMULSIFIED CONDITION; (10) IN A FINAL RINSE CYCLE, DIRECTING JETS OF WATER AGAINST THE INTERIOR SURFACES OF SAID TANK, THEREBY REMOVING RESIDUAL AMOUNTS OF DETERGENT FROM THESE SURFACES; (11) CONTINUOUSLY WITHDRAWING FINAL RINSE WATER MIXED WITH RESIDUAL DETERGENT FROM SAID TANK; (12) CIRCULATING THIS MIXTURE AS JETS OF LIQUID MATERIAL DIRECTED AGAINST THE INTERIOR SURFACES OF SAID TANK FOR THE DURATION OF SAID FINAL RINSE CYCLE, (13) REMOVING THIS LIQUID MATERIAL FROM CIRCULATION AND CONSERVING THE SAME IN SLIGHTLY EMULSIFIED CONDITIION; (14) CHEMICALLY BREAKING THE EMULSION IN THE LIQUID MATERIAL CONSEVED AFTER SAID WASH CYCLE; (15) CIRCULATING THIS LIQUID MATERIAL AS DE-EMULSIFIED THROUGH SAID MECHANICAL SEPARATING MEANS TO GENERATE A STREAM OF CLEAN WATER AND A STREAM OF WASTE LIQUID MATERIAL, AND CONSERVING THE CLEAN WATER SO GENERATED; (16) CHEMICALLY BREAKING THE EMULSION IN THE LIQUID MATERIAL CONSERVED AFTER SAID FINAL RINSE CYCLE, AND (17) CIRCULATING THIS LIQUID MATERIAL AS DE-EMULSIFIED THROUGH SAID MECHANICAL SEPARATING MEANS TO GENERATE A STREAM OF CLEAN WATER AND A STREAM OF WASTE LIQUID MATERIAL, AND CONSERVING THE CLEAN WATER SO GENERATED.