Effluent gas treatment apparatus and method

A treatment apparatus for treating an effluent gas comprising:

• a combustion chamber;
• a burner;
• an inlet for receiving secondary combustion air;
• an exhaust gas outlet for outputting exhaust gases from said combustion chamber;
• a heat exchanger for exchanging heat between a first fluid and a second fluid flowing through respective first and second fluid flow paths, said first fluid flow path being connected to said inlet such that said secondary combustion air flows from said inlet into said first fluid flow path and said second fluid flow path being connected to said outlet such that said exhaust gases received at said outlet flow into said second fluid flow path;
• said heat exchanger comprising a fluid flow communication path for providing a path for flow of a portion of said exhaust gases from said second fluid into said first fluid;
• and
• at least one inlet aperture for inputting said first fluid to said combustion chamber wherein said at least one inlet aperture comprises a fluid deflecting element associated with said aperture.