A process 1, characterized in that {TAIL ~ the waste water} is continuously passed through {HEAD ~ at least one anoxic and one aerobic treatment zone} 
A process 1 , characterized in that { TAIL ~ the waste water } is continuously passed through { HEAD ~ at least one anoxic and one aerobic treatment zone }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD