{HEAD ~ The treatment} in accordance with the system starts with {TAIL ~ biologic and enzymatic treatment} of the materials in the waste water stream 
starts with
{ HEAD ~ The treatment } in accordance with the system starts with { TAIL ~ biologic and enzymatic treatment } of the materials in the waste water stream
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH