Odour abatement biotricklingfilters, the DMT ODOUREX®
Lengthy detention times and warm weather / climate leads to septic waste water producing copious amounts of not only hydrogen sulphide, but also ammonia, organic sulphides, mercaptans, bringing numerous odour complaints on waste water treatment plants (WWTP's) and pumping stations. An odour abatement unit therefore will have to treat not only hydrogen sulphide, but also other pollutants to reduce the total odour. The common odour abatement units which are usually implemented are systems like activated carbon filtration, chemical scrubbing and / or bio filtration.
DMT Environmental Technology has developed considerable know-how and experience within the specific area of odour control systems for WWTP's and pumping stations. DMT started to develop in the 1990's new technologies like chemical scrubbing in combination with bio filtration and bio trickling filtration with lava rock stones as packing material.
Continuous research has lead to the latest in house developments which are the plastic media biotricklingfiltration process in multiple stage biological odour control processes.
A Biotrickling Filter consists out of a vessel filled with packing material, on which continuously water is spread. After absorption in the thin water layer, the polluting components will be degraded by the micro-organisms which are settled on the packing material (in the so called "bio-film"). The degraded pollutants will be discharged out of the filter by the same water layer. Nutrients and minerals for the bacteria can be dosed by a separate dosing station or by just adding effluent coming from a WWTP.
Advantages of DMT odour abatement systems:
- Very small footprint
- Different zones for degradation of different pollutants
- Provide a stable biological degrading function
- Low-cost operation compared to chemical odour abatement
- Excellent process control of the reactor
- Media life of more than 15 years.
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