Wastewater treatment rationalisation: a new and rapid approach. David Brydon Analytics Director SEAMS

Transcription

1 Wastewater treatment rationalisation: a new and rapid approach David Brydon Analytics Director SEAMS

2 What is Analytics? Data acquisition Data analysis Interpretation Applicability Capital investment planning Maintenance planning Long-term asset planning Asset reliability analysis Operational improvements Benefits Lower opex and capex Focus investment Greater efficiency Improved planning

3 The concept A structured method for identifying opportunities for reducing the number of WwTWs Long-term asset planning Company strategy FBP in future AMPs Increasing efficiency Reducing future capex and opex Future service delivery

4 Wastewater Rationalisation Rationalisation - the organization of a business according to scientific principles of management in order to increase efficiency ca. 9,000 WwTW in the UK Wide range of sizes Wide range of ages & conditions Much sewage volume is treated by a small percentage of the WwTWs

5 Opex Efficiency Benefits of rationalisation Increase strategic efficiency Smaller asset base Enhance long-term planning Integrate inf & non-inf planning Leaner organisation More responsive Increase operational efficiency Lower opex Power Chemicals Sludge management More responsive Time Time

6 Identifying the opportunities Identifying opportunities can be laborious Difficult to collate all the material needed Easier to miss good opportunities Analytics can collate and analyse much of this in one tool

7 Past problems with rationalisation Potentially large scope for WwTW rationalisation but: Many permutations and combinations for consolidation Differing priorities in different parts of a water company Project planning problems It can be difficult to derive big picture decisions Solutions often driven by issues at single sites Often insufficient time to close several works and deliver AMP outputs

8 Motivation for developing the tool What are the benefits of WwTW rationalisation? Smaller asset base Potential CAPEX and OPEX savings How do we identify WwTW transfer options? Can any of these decisions be automated? are there factors common to all WwTW transfer projects? How can we improve the use of existing data and knowledge when making rationalisation decisions

9 The rationalisation tool Currently a spreadsheet Addition to SEAMS existing software

10 The rationalisation tool - data Capex & opex Locations & topography Pumping station locations Flow Load Performance NBV data PE data Condition grade data Land value

11 How it works The tool can work on a regional basis: Analysing closure transfer options for every WwTW in a region It can also work on individual sites or clusters of WwTW The first step is geographical

12 The first steps Capacity and performance analysis Option generation

13 Cluster analysis Cost estimates for new sewers, pumping stations, inc. opex Flows could be transferred via nearby sewers There may be other sites further away that could economically be transferred A new site could be built here.

14 How the model works Close all sites and transfer to receiving site Leave some sites open and transfer the others A pumping station here may be viable For each cluster of 5 works: 15 transfer options are considered 55 pumping options are evaluated It may be more economical to transfer flows via the red route rather than each WwTW individually

15 The Outputs Option analysis Capex and opex savings Pumping station proximity Capex & opex required for closures WwTW performance The outputs Financial analysis of capex and opex Ranked list of opportunities Annual Annual Direct Opex Annual Indir. Total Q & X P Stn Build Pipe Build Pumping Site Capex Saving Opex Saving Saving Capex Capex opex PE closed

16 The benefits of using the tool Benefits It greatly reduces the time needed to identify opportunities It collates the analysis into a single tool Regional rationalisation strategies can be developed quickly Long-term WwTW plans integrated with sewer catchment planning Long-term investment plans can be developed and refined Prioritisation of future investment to give long-term operational benefits A B The objectives Smaller asset base A leaner, more efficient organisation Lower operating costs A structured systematic way of moving from A to B

17 Aligning with business planning Business Requirements What should the strategy be for the future of our assets? Strategic Long term investment planning 25yr+ view of the assets How much do we need to spend this year and what are our service targets? Tactical Set budget and service targets Annual view of the assets What is our operations & maintenance schedule for today and tomorrow? Operational Operations and Maintenance Daily view of the assets

18 OPERATIONAL Business Requirements TACTICAL STRATEGIC Analytics Matrix Analytics Techniques DESCRIPTIVE PREDICTIVE PRESCRIPTIVE What happened to our assets in the last 10yrs? What will happen to our assets in the next 25yrs? What future investments do we need to make on our assets? Long term data collection Trend analysis on historic data Understand past performance Scorecards Data warehousing Data mining Forecasting the future Probability of failure Asset deterioration Statistical analysis software Long term investment scenarios Whole life cost modelling Optimisation and simulation Uncertainty and sensitivity Decision support tools What happened to our assets in the last year? What will happen to our assets in the next year? What assets do we need to replace or maintain this year? Annual data collection & refresh Review seasonal trends Identify localised issues Dashboards Annual business reporting Detailed data mining Forecast annual performance Account for localised factors Engineering validation GIS tools and techniques Annual investment scenarios Set annual budgets Set annual performance targets Candidate assets for investment Decision support tools What is happening to our assets today? What will happen to our assets tomorrow? What assets do we need to inspect or maintain tomorrow? Daily data collection Real time monitoring of assets Early warning of faults Rapid response to asset failure SCADA and monitoring tools Real time data analysis Predict highest risk assets Condition and criticality scores Process engineering Integration of analytics to SCADA Daily schedules of work Improve operational efficiency Optimise proactive Investment Prioritise reactive Investment Job optimisation schedulers 18

19 Summary SEAMS have a tool that can greatly speed up identification of rationalisation opportunities Analytics provides a rigorous background for region-wide analysis Rationalisation has substantial benefits: Long-term asset management Long-term investment planning Organisational and operational efficiency Lower opex and capex in the long-term Integration with other investment plans The rationalisation tool can help to define long-term wastewater asset management and investment plans with the aim of improving efficiency and reducing costs.

20 Thank you. Any questions?