What is an Odour control unit?

What is an Odour control unit?

What is an Odour Control Unit (OCU)? The filters used in the OCU and ventilation stacks absorb gases such as hydrogen sulphide, which is a common source of odours from sewerage systems.

How does Odour control unit work?

What is Odour Control? Odour control technologies physically, chemically or biologically suppress unpleasant odours from treatment plants. Odour control may be required where wastewater treatment plants release sulphur compounds, ammonia and volatile organic compounds (VOCs).

How do you reduce STP smell?

The integration of Air Ozonation System and injection of Ozone into Air Handling System is the latest and most popular technology to reduce H2S and NH3 from enclosed STP Exhaust. Role of Ozone: Ozone is a powerful oxidant which rapidly oxidizes odorous gases such as Hydrogen sulphide and ammonia.

How does an odor scrubber work?

Chemical scrubbers achieve odor removal by mass transfer absorption via contact of air stream with aqueous solution on random packing material in a scrubbing chamber. The liquid is typically water, adjusted to the proper pH and oxidation potential by chemicals.

Do sewage plants smell?

As anaerobic digestion of the waste takes place, the organisms that break down the waste release certain gases like hydrogen sulfide and methane. These gases do not smell pleasant. In this process, hydrogen sulfide, carbon dioxide, and methane are produced and add to the smells found in a wastewater treatment plant.

How the human body translates an Odour in the air to a perception of smell?

The perception of odors, or sense of smell, is mediated by the olfactory nerve. The olfactory receptor (OR) cells are neurons present in the olfactory epithelium, which is a small patch of tissue at the back of the nasal cavity. There are millions of olfactory receptor neurons that act as sensory signaling cells.

How does a biotrickling filter work?

A biotrickling filter is a combination of a biofilter and a bioscrubber. The bacteria responsible for decomposition are immobilised on a carrier or filter material. The filter material consists of synthetic foam, lava or a structured plastic packing.

Does an STP smell?

Strong smell/odour from the STP: This is a very common complaint from numerous housing communities and even commercial buildings which have an STP in operation. The smell is often very strong and quite often unbearable. It is caused by any one or all of the problems listed above.

How do you get rid of the smell of wastewater?

We recommend a simple approach: Seal your wastewater treatment tanks/lagoons with a gastight cover solution. Covering these tanks will reliably prevent diffusion of odor vapors. Escaping odor vapors can be contained and evacuated for further treatment.

Why do wastewater treatment plants smell?

In most cases, the root cause of the smell is an anaerobic, or septic, condition where the oxygen flow to the water or wastewater is limited. When that happens, microbes can thrive which give off hydrogen sulfide, AKA “the rotten egg smell”.

Does it smell living near a sewage works?

“It isn’t so bad during the winter but in the summer, you do smell it sometimes.” Not only is there a distinctly suspicious smell as you meander along the footpath, but there is also a noticeable humming noise emanating from the plant.