GRP Odour- Control Vessel
The systems consist of the following:
A system of activated carbon filters designed to treat a sewage origin foul air. The system in regular operation works as a polishing stage that will follow the chemical scrubbing system treating the air abstracted from the [wet well and solids treatment area at the pumping station lower level.] In ncombination with the scrubbing system, the overall efficiency of the removal of hydrogen sulphide gas shall be not less than 99.8% and shall ensure the odour concentration below 2,500ouE m-3 as determined by dynamic olfactom etry.The air ductwork and carbon filters shall be designed to enable the filters to work as stand alone units by-passing the scrubber s. In this configuration the system shall be cap able of attaining the efficiency of H2S removal of not less than 99% with more frequent carbon regeneration.
A system of continuous monitoring of smell in the stream of air leaving the odour control facility. When the odour is sensed to exceed the preset threshold value, the alarm will be generated in the control room.