Measurement of odours from pulp & paper, feedlots and natural sources is challenging and requires careful selection of instrumentation. Ecotech offers a complete monitoring solution designed for this application.
Odours are one of the most common sources of air pollution complaints and may be due to a wide variety of sources from rotting vegetation, animal feedlots, pulp and paper manufacturing, sewerage treatment facilities etc. The measurement of odours is extremely difficult due to the variety of sources of odour and the often very low ppb concentrations that produce odour.
However, some industries and applications have a known source of odour resulting from compounds such as mercaptans, hydrogen sulphide, ammonia, typically from industries such as pulp and paper manufacturing, fertiliser production or natural sources such as rotting vegetation.
Ecotech is able to offer extremely sensitive instrumentation and systems that enables the low ppb monitoring of these species down to 1 ppb, fully integrated with our data evaluation and reporting software.
Hydrogen sulfide is the chemical compound with the formula H2S. H2S is colorless, toxic and flammable and is responsible for the foul odour of rotten eggs and flatulence. Hydrogen sulfide often results from sulfur reducing bacteria in nonorganic matter (in the absence of oxygen), such as in swamps and sewers (anaerobic digestion). H2S also occurs in volcanic gases, natural gas and some well waters.
The history of air pollution regulation dates back as far as the 13th century when in 1273, Edward I (Longshanks) of England prohibited the burning of sea coal in London. The smoke produced by its combustion was considered detrimental to human health.
By the late 19th and early 20th centuries, regulations were being passed that sought to control air pollution predominantly for smoke and odour control. Traditionally, regulators were concerned with the visual impact of the discharge from a stack or chimney. Therefore, emission limits were expressed in terms of colour or opacity.
Modern methods for opacity measurement still use the darkness of the stack gases to measure the amount of smoke or dust emitted within the exhaust gases.