Mark Roberts pleaded guilty to five charges of illegally dumping and burning waste - all committed since he was handed a four-month suspended sentence for similar offences in June 2004.
Neath Magistrates Court activated that four-month term and increased it by a further four months for the latest offences.
The court heard that Roberts, of Graig Gellinudd in Swansea, had been transporting significant amounts of waste to his property. This included household furniture, window frames, wood, plastic, earth and rubble.
He had then been illegally depositing rubbish and setting fire to what material he could, causing plumes of black smoke.
Covert Environment Agency (EA) enforcement officers concluded that the operation was very well organised and undertaken purely for financial gain.
EA local environment manager Steve Brown said: "We welcome the punishment given to the defendant in this case. He clearly had no respect or regard for waste legislation or the local environment.
"There is evidence that illegal waste activity is increasing and we will continue to take rigorous enforcement activity action against those that break the law.
"Today's society should not have to tolerate such anti-social behaviour. This sentence sends out a clear message to those considering undertaking such activities."