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Waste to Energy: Techno-Economic Cost-Benefit Analysis
Summary The project will complete a concept study for converting chicken meat industry waste into energy and a solid coproduct via a thermal process. The aim is to determine the economic viability (payback period and internal rate of return) for a thermal WTE facility that utilizes the most uptodate technologies. A thermal process can reduce grid power and heating fuel costs whilst also generating a solid which can be used as a fertilizer or soil substrate. Spent litter and process plant waste will both be considered.
The project will approach the problem in stages;
1. Industry review and Basis of design: Summarize previous work on waste availability and composition, onsite heat and power loads, federal/statebased regulation and disposal requirements relevant to associated waste streams, the planning approval process, additional drivers/constraints for change, and international approaches. A technical specification will be created for vendor pricing from thermal WTE technology vendors (e.g. pyrolysis, gasification, mass combustion).
2. Technoeconomic CostBenefit Analysis (CBA): Assess the economic feasibility of WTE technology. An optimized thermal treatment system will be compared to previously published anaerobic digestion results. This will include consideration of disruptive project models including leasing and buildownoperate to reduce upfront capital requirements. The Renewable Energy Target (RET) and the proposed Emissions Reduction Fund (ERF) will also be considered.
It is envisaged that a potential outcome from the CBA will be a modular and/or highly transportable system which can deal with a range of waste tonnages by replicating the module with an appropriately sized power generator set (e.g. engine). Suitable WTE technology will be matched to the feedstock.
3. Final report detailing study outcomes for dissemination.
Program Chicken Meat
Research organisation All Energy Pty Ltd
Objective summary Stage 1: Industry Review and Basis of Design
Previously published data will be utilized to minimize the project budget.
1.1: Problem definition of for the chicken meat industry and documentation of current practices in order to better understand the role that waste to energy (WTE) can play in providing a valueadding alternative treatment option.
1.2 Review of existing industry practice with regards to waste streams produced (i.e. volume per head processed and typical composition) and treatment systems employed (i.e. size, type, performance and cost).
1.3 Review of current Federal/state regulatory landscape and WTE planning approval requirements.
1.4 Review of additional drivers (i.e. ease of maintenance/operation, social license) and constraints (i.e. budgetary and or space restrictions, lack of industry knowledge) to adoption of WTE.
1.5 Review of international and domestic adoption of WTE and/or any research and development activity in this area.
The anticipated outcomes of the aforementioned review activities will be to define the key unit operation requirements, suppliers available, quality requirements of product streams and processing variables requiring consideration.
Stage 2: CBA
2.1 Technical specification of a suitable waste stream(s).
2.2 Budget vendor pricing for WTE plant.
2.3 Block flow diagram & high level mass and energy balance for an entire plant.
2.4 Fully installed capital cost estimate including plant tieins and balance of plant requirements.
2.5 Operating cost and revenue / savings estimate.
2.6 Costbenefit analysis (including payback, rate of return, net present value).
2.7 Preliminary sensitivity analysis: to determine the process variables & scenario assumptions which have the greatest impact on the overall economics.
Stage 3: Final study report and summary flyer.
Project Stage Closed
Project start date Friday, March 20, 2015
Project completion date Wednesday, September 30, 2015
Journal articles from project Not Available
National priority An environmentally sustainable Australia
Rural priority Soil, water and managing natural resources
RIRDC goal CME-Increase the productivity and efficiency of chicken meat production
Principal researcher Gareth Forde
Research manager Kylie Hewson
Admin contact Gareth Forde