COD & BOD

Aquatic wildlife and vegetation need oxygen to thrive. By measuring COD and BOD of your wastewater, firms can take action to keep oxygen to a healthy level. The higher the COD and BOD, the more contaminated the water, so concentrations must be reduced as much as possible before discharge.

COD measurement relies on a chemical reagent to oxidise organic and inorganic matter, while BOD assessment uses microorganisms to biodegrade organic compounds. It is slower to carry out BOD testing, so COD is often the preferred method.

Activated carbon filters used for treating wastewater reduce COD and BOD, preventing blue-green algae blooms from forming and keeping watercourses aerated.

COD and BOD also kill off bacteria in biofilters at wastewater treatment plants (WWTP). By pre-treating your wastewater, you can then send it to a WWTP where it’s cleaned for industrial re-use. This saves on freshwater usage, thus conserving our planet’s natural resources.

COD and BOD may also contain persistent organic pollutants (POPs), which accumulate in nature and enter the human food chain. It’s common to use multiple technologies in series to bring down COD and BOD levels and keep our water pure.

Desotec’s simple plug-and-play mobile water treatment solutions are tailored to support firms across a range of sectors.

Waste management and recycling firms experience high COD and BOD levels. At landfill sites, rainwater trickles through the waste, picking up traces of contaminants and collecting at the bottom. To protect groundwater, leachate water must be pumped up and treated before it floods the site.

The manufacture of pesticides and fertilisers also produces wastewater with high COD and BOD levels. These products may contain POPs, so treatment is essential to protect biodiversity and human health.

Wastewater from cleaning processes in any sector will contain both residues of industrial chemicals and cleaning products. Desotec’s mobile filters are supplied on a monthly basis, making them ideal for short-term or temporary usage.

Additionally, there are many natural sources of BOD and COD, including rotting leaves and dead fish. Desotec filters help your firm play its part in preserving these delicate ecosystems.

Each industrial site has an environmental discharge limit. We carry out lab and pilot testing to determine the optimal set-up to keep COD and BOD levels within permitted limits. While regulations may be tightened in the future, Desotec’s modular system makes it easy to future-proof your business.

Should your firm experience a sudden peak in COD and BOD, you can tap into our solutions as they will start working straight away. With Desotec’s activated carbon filtration service, your business can be confident it will remain compliant and sustainable at all times.