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Home » Projects » Rivalea Biogas Generator

Client: Rivalea Australia

Location: Corowa, Southern NSW

Head Contractor: Evo Energy Technologies

CHP: Custom-built 2G Avus 500 plus

Key Outcomes: 

  • Generates 25% of sites power per year
  • Offset over 28,000 tonnes per annum of CO2 equivalent emissions 

Rivalea (Australia) Pty Ltd is one of Australia’s leading pork producers based in Corowa, southern NSW.  In 2017 Rivalea fulfilled a long term goal to harness the power of the naturally occurring methane generated in its waste water treatment ponds. The successful implementation of a custom-built 500 kW combined heat and power unit in partnership with EVO Energy Technologies and 2G Energietechnik achieves significant cost savings, reduces environmental impact and takes load from the grid which is then available to other users.

Rivalea have been a pork industry leader in developing and promoting covered anaerobic lagoons as an important emission reduction tool. Rivalea first installed a covered anaerobic lagoon in 2010 at a 9,500 head piggery in southern NSW as a research project in partnership with Australian Pork Limited. This project provided valuable lessons in installation methods, equipment selection and the safe operation of covered lagoons. The first pond remains operating and is providing further innovation opportunities as the company is trialling delicate sludge management operation made more challenging by the very limited access through the gas tight polyethylene cover.

Following from the first project, Rivalea has incorporated many improvements into the second covered lagoon located at its Corowa site. This project includes a 40 ML lagoon and automatic flaring of the gas. Since commissioning in 2012, the flaring of gas has reduced the global warming impact by 80,000 tonnes of CO2-equivalent.

In April 2017, Rivalea completed the Stage 2 of the project by installing the custom built 2G Avus500plus biogas cogeneration system in a 12-metre container.  This innovative system uses German engineered cutting edge technology to treat and remove contaminants before combusting the high quality biogas to convert it to useful energy services of electricity and heat. All the electricity is consumed within the Corowa farm’s on site high voltage network. Inclusion of the heat recovery equipment in the Avus500plus will allow extension projects to heat the lagoon and piggery sheds in the cold winter months.

Results: 

The custom built 2G Avus500plus unit, offers combined heat and power (CHP) technology that guarantees advanced energy efficiency of up to 90%. This sophisticated system is expected to generate around 25% of the sites power per year resulting in considerable energy reduction for Rivalea. The Rivalea biogas generator is also expected to offset over 28,000 nes per annum of CO2 equivalent emissionsfrom avoided and grid offset emissions. These factors highly influenced Rivalea in going ahead wit the biogas cogeneration project.

 

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