Inventor
WITTMANN JOHN W
US4 patents
Patents
4 patentsUS4975197ADec 4, 1990
Orbal wastewater treatment process
ENVIREX60 citations93
US4961854AOct 9, 1990
Activated sludge wastewater treatment process
ENVIREX66 citations93
US4563282AJan 7, 1986
Wastewater treatment plant and method
ENVIREX27 citations85
US4663038AMay 5, 1987
Side channel clarifier
ENVIREX10 citations72