Table Summary table of all available solutions for end of life waste paint Solution Decision Application Obstacles Opportunities Comment Paint Reuse Exchange NR* paint labour cost (in case of using labour) OH&S of volunteers (in case of volunteers) OH&S with storage and handling diversity in color and type sorting expenses filtering expenses potential bacterial infection warranty issues low volume of high quality waste paint market demand essential local government involvement requires investment on infrastructure and community education reduce transportation cost reduced carbon footprint saving in resources and energy increase the community awareness on importance of recycling These options need heavy involvement from government to educate community, provide infrastructure and to put in place initiatives to increase market demand (e.g. graffiti abatement contractors being asked to use a certain amount of waste paint, giving credit toward green star building for using waste paint in some applications such as fence painting) consolidation NR paint remanufacturing NR paint labour cost sorting expenses filtering expenses ongoing laboratory testing and costs diversity in color and type need to meet technical requirement (ongoing quality control) difficulty in producing repeatable and uniform product potential bacterial infection no stable market warranty issues graffiti abatement applications warehouse painting saving in resources and energy reduced carbon footprint Local government initiatives can potentially make it more attractive Paint re-blending NR labour cost sorting expenses filtering expenses same as new paint ongoing laboratory testing and costs potential bacterial infection no stable market warranty issues producing high quality same performance as new paint saving in resources and energy shifting toward green building
Recycling Concrete; WLP as a replacement R1* non-structural concrete sorting expenses ongoing laboratory testing and can improve concrete performance reduced carbon footprint wide range of applications available does not need to be sorted very accurately stable market full scale industrial extensive available research information Local research and trials in Victoria with collected WLP is required, initiatives such as providing credit toward green star building can increase the market demand Concrete; WLP as polymer replacement R1 masonry blockfill, overlay, rigid pavement, pervious concrete, cement manufacturing sorting expenses ongoing laboratory testing and costs varying ingredient proportions in collected WLP affects final product properties improves concrete properties reduced carbon footprint reduced consumption of chemical additives does not need to be sorted very accurately stable market full industrial extensive available research information Polymer feedstock NR manufacturing of HDPE, PMMA sorting expenses ongoing laboratory testing and costs early research stages at laboratory scale high technical risks high risk due to initial stages of the research enhancing mechanical properties of HDPE and PMMA, reduced carbon footprint reduced consumption of resources and polymer to go through rigorous research before any further step is taken decorative cover, roof membrane NR decorative cover high sorting expenses ongoing laboratory testing and costs unstable market volume consideration OH&S issues Environmental risks saving in resources and energy the environmental and OH&S aspect of this sort of product are major concerns Asphalt sealant R2* asphalt sealant, pavement overlay, road overlay sorting expenses ongoing laboratory testing and costs varying ingredient proportions in collected WLP affects product properties reduced carbon footprint saving in resources and energy improved asphalt performance full scale industrial reduced consumption of chemical additives more research (both laboratory and field scale) need to be done in Victoria under supervision of road authorities
Table Risk assessment summary for reusing of WLP in concrete Category Risk Likelihood Consequence Risk level Treatment Note Workplace health and safety Workers health due to working with chemicals Possible Moderate High Safety Date prepared and monitored regularly Concrete industry produces a range of products using chemicals and polymers and use of WLP is similar in nature to those practices. Fire and explosion due to storage and working with waste paint Possible Catastrophic Extreme Fire plan and material safety data sheet required Low air quality in work environment Unlikely Moderate Moderate Air quality monitoring is required Environment Groundwater and stormwater contamination due to leachate* Unlikely Moderate Moderate Research on leachate of contaminant constituents from WLP concrete is required Australian Standard for Leachate Procedure (ASLP) needs to be followed. Business Negative reputation due to varying quality of final concrete product Possible Major Extreme Continuous quality control of product More research and field trials prior to any large scale application will minimise uncertainties. Case specific Change of government regulation and budget allocation affecting waste paint scheme quantity and cost Likely Extreme Long-term government plan and commitment
Sorting Waste Paint Similar to current DYH program conducted by toxfree NA extraction Similar to current DYH program conducted by toxfree NA Technical evaluation tests on waste paint Water content, polymer content and pigment content Frequency and number of tests depends on volume, final application and outcomes of initial research work Transport and handling Similar to current procedure from toxfree to geocycle NA WLP Consolidation Water content needs to be reduced below a certain level determined at the research phase Technical and financial vary with water content orf each WLP patch Production line Similar to adding water and polymer to concrete An allocated tank (mixer) with capability of weight measurement will be required Volume Considerations for WLP in Asphalt Sealants and PMB The limited data on reusing WLP in asphalt sealants as a replacement for polymer does not provide any details on what percentage of polymer can be replaced with WLP. Research in this application is at its very stages and as such many assumptions need to be made in volume calculations. The percentage of polymer in asphalt sealants varies from 7 to 20% (King and King 1988). With an assumption that 50% of polymer can be replaced with WLP; the WLP percentage in asphalt sealant will be 3.5% to 10% (average of 7% is used in calculations). Table 13 shows rough estimations on WLP quantity required to replace 50% of polymer used in asphalt sealants. Table 13 Volume considerations for WLP in concrete and asphalt selanats Application Annual production (thousands m3) (Australia) Replaced polymer Required WLP (tonnes) Asphalt Sealants Up to 50 34 kg/m3 1700 Environment Impact Assessment of WLP in Concrete This section provides an overview of the environmental impacts and considerations associated with recycling WLP in concrete and also asphalt sealants. Understanding the environmental impacts of each option helps in making informed decisions on whether or not to proceed with a project.
Risk assessment summary for reusing of WLP in asphalt sealants Category Risk Likelihood Consequence Risk level Treatment Note Workplace health and safety Workers health due to working with chemicals Unlikely Moderate Moderate Safety Date Sheet prepared and monitored regularly Asphalt sealant industry works regularly with chemicals as part of daily operation and this lowers the risk likelihood due to trained and experienced workers. Fire and explosion due to storage and working with paint Unlikely Catastrophic Extreme Fire plan and material safety data sheet required Low air quality in work environment Likely Moderate High WLP and mixture temperature and air quality monitoring is required Environment Negative impact on air quality during production and placement Possible Moderate High Research on effect of WLP in air quality during production is essential. The production temperature plays an important role. Business Negative reputation due to varying quality of final product Possible Extreme Continuous quality control of final product More research and field trials prior to any large scale application will minimise uncertainties. Case specific Change of government regulation and budget allocation affecting waste paint scheme quantity and cost Likely Major Extreme Long-term government plan and commitment