The body of James Nicholls, 29, from Long Eaton, was discovered on Tuesday by workmen at High Melton College where he was a student.
South Yorkshire Police said his death was not being treated as suspicious.
Deputy Principal of the college Catherine Parkinson said: "Our sincere and heartfelt condolences go out to the family at this unimaginably sad time".
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High Melton is a campus of Doncaster College.
A force spokesman said inquiries were ongoing to determine the exact circumstances around Mr Nicholls' death.
A man whose body was discovered in a sewage tank at a Doncaster college has been identified by police.