Delorean’s Engineering Division (formerly Biogass Renewables) products

Biogass Renewables uses a process called anaerobic digestion to convert commercial and industrial waste into onsite electricity, heat and clean methane gas.  The organic waste streams that feed our plants range from supermarket, kitchen, dairy, vegetable, abattoir and fishery waste, to grain and legume surplus, to ordinary garden waste.

There are many different types of digesters for the anaerobic digestion of biomass in the market place. Biogas Australia seeks to provide an economical solution for one of the main components of a biogas plant, that being the digester.

Anaerobic digestion depends on the biological activity of relatively slowly reproducing methanogenic bacteria. These bacteria must be given sufficient time to reproduce, so that they can replace cells lost with the effluent sludge, and adjust their population size to follow fluctuations in organic loading. If the rate of bacteria lost from the digester with the effluent slurry exceeds the growth rate of the bacteria, the bacterial population in the digester will be “washed out` of the system. This washout is avoided by maintaining a sufficient retention time for solids ensuring that the bacterial cells remain in optimal concentration within the digester.

When using biogas as the fuel source for the generation of electricity, Biogas Australia concentrates on the supply of mainstream (Cummins, Perkins, Deutz, MAN etc) biogas engines coupled with French Leroy Somers or Siemens alternators to provide 3 phase power for use on farm or sale to the National/State Electricity Grid.

Trigeneration is defined as the simultaneous production of electricity, heat and cooling from a single fuel source. As with cogeneration, the `waste heat` by-product that results from power generation is harnessed, thus increasing the overall efficiency of the system.

Gasification is a process that converts carbonaceous materials, such as chicken litter, rice hulls, saw dust etc. into syngas which can be used to power gensets to generate electricity or fuel boilers to provide steam for production processes.

Biogas Australia can supply DIY kits for “Hobby Farmers” and Householders who want to make use of their household wastes to produce biogas for cooking, lighting or hot water preparation as well as electricity generation.