GPP CRITERIA FOR WASTE WATER INFRASTRUCTURE

Transcription

1 GPP Advisory Group Meeting 19 th September 2012 GPP CRITERIA FOR WASTE WATER INFRASTRUCTURE Ole Godsk Dalgaard, COWI A/S 1

2 Background Objective To provide public authorities with adequate guidance to meet the environmental legal requirements, effective technological alternatives, as well as to inform them on best practices through the development of GPP criteria for the EU green public procurement of wastewater infrastructures Outputs Technical background report including: Analysis of the proper wastewater treatment to fulfill existing regulations Key environmental impacts/contribution to resource efficiency Analysis of the different wastewater infrastructure technologies/scenario include including Life cycle cost (LCC) methodology EU Green Public Procurement criteria with core and comprehensive criteria for each scenario The GPP criteria for wastewater infrastructure works will be developed for: Construction/renovation of collecting systems Wastewater treatment covering different level of treatment methods and technologies incl. treatment of sludge 2

3 Project Steps Step 1 Preparation of Technical Background Report Step 2 Development of GPP Criteria Step 3 External Consulation Step 4 GPP Advisory Group Consultation Step 5 Inter-service Consultation Step 6 GPP Criteria Adopted 3

4 Main challenges The application and use of GPP criteria for waste water infrastructure is quite different from other GPP criteria. The reason is that these GPP criteria relate to: 1. Big and often complex infrastructure 2. An area with different levels of legal requirements (EU and national) for the effluent depending on actual location of the projects and the environmental sensitivity of the receiving water bodies 3. Projects that themselves are having a positive environmental impact compared to a situation where the project is not implemented. Still the discharge of the remaining content of substances is the main contributor to the overall total potential environmental impact from wastewater treatment plants 4

5 Key environmental impact The main environmental impacts/effect categories linked with wastewater treatment plant projects are: Nutrient enrichment Toxicity Global warming Acidification 5

6 Key environmental impact Key Environmental Impacts GPP Approach Energy consumption especially in the operation phase Emission of nutrients with the treated waste water Emission of pathogens and or hazardous substances (e.g. heavy metals, pharmaceuticals, organic priority substances etc.) with the treated waste water Purchase equipment with low energy consumption/high energy efficiency Increase the energy efficiency of electricity and heat producing units Reduce energy consumptions in buildings Promote use of renewable energy sources Favour the waste water treatment efficiency of the treatment plants Emissions from sludge incineration Favour the flue gas treatment efficiency of the sludge incineration plants Water consumption Incentivise the reduction of water consumption Promote reuse of water and use of grey/rain water 6

7 Other environmental impacts Construction materials At present, it appears not possible to give recommendations on the procurement of green building materials and construction products in the framework of the GPP criteria on waste water infrastructure projects Reference to other relevant GPP criteria The following GPP criteria for other product groups can be relevant to include in tendering of the administrative buildings of a waste water infrastructure: - Office building (to be adopted in early 2013) - Indoor lighting - Heating systems - Sanitary tap ware (taps and showerheads) - Office IT equipment - Toilets and Urinals - Paints and varnishes (to be adopted in 2013) 7

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9 GPP criteria for consultancy services Selection criteria: Depending of the specific wastewater infrastructure project the selection criteria can include one or more of the following experience and technical capacities: Experience in planning and design of waste water infrastructure (specific items within sewer systems, waste water treatment and sludge treatment should be specified) Experience in incorporating energy efficient process equipment Experience in environmental impact assessment and environmental management including incorporation of measures to reduce the total environmental impacts from discharge of waste water into the receiving water bodies Experience in performing Life Cycle Assessment (LCA) and ability to prioritise potential environmental impacts Experience in setting up and calculating Life Cycle Cost (LCC) 9

10 GPP criteria for construction contract Selection criteria: Depending of the specific waste water infrastructure project the selection criteria can include one or more of the following experiences and technical capacities: Experience in construction of waste water infrastructure with focus on reduction of environmental impacts (specific items within sewer systems, waste water treatment and sludge treatment should be specified). Experience in operation of waste water infrastructure with focus on reduction of environmental impacts (specific items within sewer systems, waste water treatment and sludge treatment should be specified) Experience in environmental management of a construction site 10

11 Energy performance requirements Technical specifications: The overall energy demand of the wastewater facility is lower than the maximum defined in the technical specification Minimum standards for specific process equipment Core award criteria: Lower energy consumption than that demanded in the technical specifications, based on the overall energy demand for the entire wastewater facility, for some selected specific process equipment and/or for buildings Comprehensive award criteria: Lower energy consumption than that demanded in the technical specifications, based on the overall energy demand for the entire wastewater facility, for some selected specific process equipment and/or for buildings % of self-production of power and heat 11

12 Wastewater treatment efficiencies Technical specifications: Demands on effluent standards Demands on maximum chemical consumption Core award criteria: Treatment efficiency for different pollutants such as BOD, nitrogen and phosphorous Sustainable use of precipitating chemicals Comprehensive award criteria: Treatment efficiency for further pollutants such as pharmaceuticals, pathogens, heavy metals and organic priority substances 12

13 Water consumption Technical specifications: Demands on water efficiency demand for specific treatment units and equipment. Award criteria go beyond that, including rainwater and grey water use: Additional points will be awarded for water savings measures that goes beyond the above mentioned specifications 13

14 Treatment efficiency of flue gas treatment Technical specifications: Demands on emission standards for: Dust, HCl, SO 2, NO x ) Core award criteria: Additional points are given for reducing the emission of the substances listed above below limit values for pollutants for sludge incineration. Comprehensive award criteria: Additional points will be awarded - in addition to the core criteria - treatment efficiencies for more substances e.g. mercury, PAHs, cadmium and zinc 14

15 LCC definitions LCC covers all costs in each life cycle (see Figure) Core criteria: Financial LCC without the external costs Comprehensive criteria: LCC is suggested to an economic assessment where the externalities are included. The coverage of external environmental costs will be limited to what is feasible for a given project. Life cycle cost Construction costs Operation costs Maintenance End of life (decommissioning) Core Income from bi-products (sludge energy etc) Income from recycled materials External costs Comprehensive 15

16 LCC approach Life cycle phases Cost element Unit Unit price LCC Construction Construction costs Maybe as bill of quantities Estimate of construction costs External impacts during construction Physical (km roads affected, emissions etc) Unit * unit costs Operation Operation costs Maybe as bill of quantities Estimate of operation costs Chemicals Other consumables Energy Manpower Physical units (energy, number of staff etc) Unit * unit costs Maintenance costs External Impacts during operation Maybe as bill of quantities + frequency recurrence Physical (emissions) Estimate of maintenance costs Unit * unit costs Decommissioning Demolition costs Maybe as bill of quantities Estimate of demolition costs Cost of disposal of demolition waste Income from recycled material Quantity of materials Quantity of materials Unit * unit costs Unit * unit costs 16 Data provided by the bidding contractor Data provided by the organisation preparing the tender documents

17 Time schedule Technical Background Report (draft) Apr Draft GPP Criteria Report (draft) Sep External consultation Sep. Nov Analysis paper, external consultation medio Dec Analysis Paper, Advisory Group Consultation medio Jan Analysis Paper, Inter-service Consultation ultimo Jan 2013 Final Report 22. Feb