Microbial Solutions Limited is a spin-out from research conducted at the Centre for Ecology and Hydrology, a research centre owned by the Natural Environmental Research Council located in the University of Oxford Science area. The Company has developed an innovative wastewater treatment, known as Microcycle™, which uses a patent protected collection of ‘clever’ non-pathogenic bacteria to remove the toxic components from metal working fluids (oily lubricants used to ensure clean cutting processes in industry) and produce grey water that is safe to dispose of in the sewage system.
Founded in December 2007, Microbial Solutions Limited is a spin-out from research conducted at the Centre for Ecology and Hydrology, a research centre owned by the Natural Environmental Research Council located in the University of Oxford Science area. The Company has developed an innovative wastewater treatment, known as Microcycle™, which uses a patent protected collection of ‘clever’ non-pathogenic bacteria to remove the toxic components from metal working fluids (oily lubricants used to ensure clean cutting processes in industry) and produce grey water that is safe to dispose of in the sewage system.
Metalworking fluids (MWF) are used in industry world-wide to cool and lubricate metal parts during metalworking operations such as cutting, grinding, honing and forming. By far the major user industry is transport, comprised of automotive, trucking, aerospace and components manufacture. Spent metalworking fluids are considered oily wastewater and contain a mixture of free and emulsified oils together with a cocktail of toxic water-soluble compounds including biocides (which control unwanted bacterial growth in the operational fluids), and it is generally not possible to release such compounds straight to sewer. Rather, they must be treated first to reduce the pollution load.
The principal measure of the pollution load of spent MWF is its Chemical Oxygen Demand (COD), measured in milligrams per litre. The COD is the amount of oxygen consumed to completely chemically oxidise the organic water constituents to inorganic end products. If high COD liquid waste is released into rivers, it can be used as food by algae, which can then proliferate and deplete the dissolved oxygen, killing the higher river fauna, particularly fish. Waste MWFs carry too high a COD for them to be disposed of to the local sewers. Most of this waste is taken away to centralised treatment and disposal facilities. Some of the largest waste producers have on-site treatment systems such as vacuum-evaporation or ultra-filtration. However, these treatments are only partially effective at removing the pollution load and they also leave a residual toxic sludge which has to be disposed of.
Regulatory requirements for treatment and disposal of MWF have become ever more stringent. The major legislative initiatives affecting MWF disposal are the Hazardous Waste Regulations and Landfill Directive. Under the new Landfill Directive liquids may no longer be disposed of to landfill, and this previously common low-cost option for the disposal of MWFs is now closed. Furthermore, all oily wastes are now classified as hazardous, and may only be consigned to registered hazardous waste landfill sites.
Further impacts of legislation include the requirements that:
- all wastes must be properly segregated (which prevents, for example, the mixing of hazardous and non-hazardous wastes, and also mixing of MWF filter cloths and MWF, for example)
- all wastes must be assessed prior to landfill to ensure that weight and hazardous content are reduced where possible
- all hazardous waste producers must register with Environment Agency
- the duty of care upon waste producers extends to the point at which the waste has either been disposed of or fully recovered, and waste taken off-site must be accompanied by an accurate description of the waste and a transfer note, and must use licensed waste managers.
The result of these regulatory initiatives over the last few years has been to inflate the price of MWF disposal. This trend will continue for some time as the new environmental and chemicals regulations are adopted in full. This is where Microbial Solutions and Microcyle come in: a more environmentally friendly technology and a LOWER COST CERTAINTY combined with an onsite no-tankering-away solution.
The combination of technology, service offering, management team and commercial partners provide a reliable, cost-effective option for clients to meet their growing environmental responsibilities.
Environmentally friendly biological treatment system
- low energy process relative to treatment alternatives
- reduces COD allowing discharge to sewers
- reduces toxicity (not currently a component of discharge consents)
- eliminates emission of this hazardous waste stream from the engineering facility
- no transportation costs and associated environmental impact
- potential for recycling as grey water
Simple to implement
- No complex machinery: the efficiency of the process derives from the biological process
- can be managed on-site by our commercial partners with high-level technical backup from Microbial Solutions
- Low entry cost, stable pricing a straightforward price-per-litre charging system: no upfront capital costs for purchase of equipment
- long-term fixed-price service contracts available, providing price stability against a background of escalating waste disposal costs
- avoids the client management responsibilities associated with off-site shipment of hazardous waste streams
Reliable & deliverable
- world-beating Oxford-generated technology
- tested on all major classes of metalworking fluids
- experienced management team between Microbial Solutions and our commercial Partners