The Mid-Connecticut Resource Recovery facility operates three (3) refuse derived fuel (RDF) fired municipal waste combustors (MWCs) capable of processing 675 tons per day of RDF. The total plant capacity is approximately 2,000 tons per day. Each of the three MWC's, identified as units 11, 12, and 13, is a Combustion Engineering Model VU-40 spreader/stoker type waterwall incinerator/boiler with traveling grate. In addition to firing RDF, each unit is capable of firing coal as a secondary fuel and natural gas as a fuel during startup and shutdown. The steam produced by the MWC's is sent to two (2) turbine generators with a nameplate capacity of 45 Megawatts each.

●  Diagram of Process (Diagram)

●  Pollution Control

●  The Mid-Connecticut Resource Recovery Facility is equipped with several air pollution control technologies. Each combustor unit has the following control devices to reduce emissions from exhaust gases:

►  Spray Dry Scrubber (SDS) which includes a rotary atomizer to finely atomize and mix lime slurry to remove acid gases such as Sulfur Dioxide (SO₂) and hydrogen chloride (HCL).
►  Selective Non-Catalytic Reduction (SNCR) which injects urea into the combustion flue gas to reduce nitrogen oxide (NO_X) emissions.
►  Reverse Air Baghouse, which is like a large fabric filter, is used to remove particulate matter and metal emissions.

●  Covanta also conducts continuous emissions monitoring (CEM) of stack gases for carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen oxides, oxygen, and opacity which allows the control room to continuously monitor the performance of each combustor unit. The CEM data is recorded on a 1-minute basis and is summarized following the end of each quarter. The CEM quarterly report is then submitted to the DEP and EPA for review.