Modelling Sludge Opex Efficiency
ISBN: 1 84057 590 5
The main objectives of this project were to: understand the data and methodological issues that appear to have restricted previous attempts to model sludge operating costs, and; develop a robust approach to explain the variation in sludge operating costs across companies.
The first stage of the project provided recommendations to mitigate the issues identified with the data and approaches used in previous analysis. In the second stage, these recommendations were explored and econometric models for sludge expenditure were developed. These models demonstrate emperically that sludge volumes, landbank availability and population density are drivers of sludge expenditure. Data limitations have meant that it has not been possible to tackle all the issues identified in the project. However, the analysis does go some way to developing a robust econometric model for sludge costs that could be used as an alternative to the current Ofwat unit cost model.
Customers who bought this report also bought...
The records of 12 UK water companies were searched for performance data repating to sustainable wastewater treatment technologies, and questionnaires regarding maintenance and compliance were sent to site operators. Da... More...Price: £100 Add to basket
Iron dosing at wastewater treatment works is used mostly to reduce effluent phosphorus concentrations in order to meet the requirements of European legislation. The existing iron Environmental Quality Standard (EQS) is curren... More...Price: £150 Add to basket
The objectives of this project were: to understand the impact of competition and increased scrutiny/concern on recycling of biosolids to agriculture due to an increase in other organic materials being considered for recycling... More...Price: £50 Add to basket
The Agronomic and Environmental Impacts of Phosphorus in Biosolids Applied to Agricultural Land: A Review of UK Research11/SL/02/10 - ISBN: 1 84057 595 6
A review of UK research funded over the last 15 years on the potential environmental impacts of phosphorus (P) in biosolids has concluded that biosolids are a valuable, sustainable source of P whose recycling to agricultural ... More...Price: £50 Add to basket
The CO2 content of the biogas produced during wastewater treatment is not counted as emissions under normal carbon accounting rules. A key objective of this project was to identify methods for capturing, separating and u... More...Price: £200 Add to basket