Patent ID: 6136185
Filing Date: 2000-10-24
Classification: C02F,Y02W,Y10S

Abstract:
A biodegradable mass treatment system, comprising:a source of biodegradable mass as entrained in a wastewater stream;a first treatment cell having a bottom at a first elevation, a first conduit connecting the biodegradable mass source with the first cell, an end of the first conduit disposed in the first cell near the first elevation;first aerator means disposed in the first cell for introducing air into the first cell at a second elevation spaced from the first elevation by at least two feet, the first aerator means coupled to a source of compressed air, a first anaerobic zone extending from the first elevation to the second elevation;a water surface of the first cell maintained at about a third elevation, a first aerobic zone defined in the first cell to extend from the second elevation to the water surface of the first cell, the difference between the third elevation and the second elevation being at least twelve feet;a second treatment cell sealed from the first cell and having a bottom at a fourth elevation, second aerator means disposed in the second cell and introducing air into the second cell at a fifth elevation spaced from the fourth elevation by at least two feet, a second anaerobic zone extending from the fourth elevation to the fifth elevation, the second aerator coupled to a source of compressed air;a water surface of the second cell maintained at about a sixth elevation, a second aerobic zone defined in the second cell to extend from the fifth elevation to the water surface of the second cell, the difference between the fifth elevation and the sixth elevation being at least twelve feet;a second conduit having a first end disposed in the first aerobic zone near the third elevation and having a second end disposed in the second anaerobic zone near the fourth elevation; anda third conduit for removing treated water from the second cell, an end of the third conduit disposed in the second cell near the sixth elevation.