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Wastewater Treatment & Sewerage 

Extending and Updating UKWIR's Pollution Source Apportionment Tool (2)

Reference: 18/WW/02/9
ISBN: 1 84057 851 3
Published Date: 29/04/2018

The SAGIS-SIMCAT modelling system underpins a significant part of the Water Industry’s water quality investment planning through providing the ability to develop effective evidence-based Programmes of Measures whilst maintaining the ‘Polluter Pays Principle’. SAGIS-SIMCAT will serve as the regulatory agencies primary catchment planning tool until at least 2027. This project has delivered improvements to SAGIS in three key areas, namely; (1) functionality enhancements to improve the representation of catchment processes, (2) data enhancements to align SAGIS with the second cycle of River Basin Management Planning requirements, and (3) a series of catchment investigations focusing on Natura 2000 sites that provide an up-to-date view on model performance, an understanding of the sources of chemicals and options to minimise the risk to compliance with water quality objectives.

This report is available in a set with UKWIR's published reports on Chemical Source Apportionment, available for purchase together at a reduced price of £600.

Price: £100  

Chemical Source Apportionment report set

Reference: n/a
ISBN: n/a
Published Date: 17/04/2018

This is a set of UKWIR's published reports on Chemical Source Apportionment, available for purchase together at a reduced price of £600.

Price: £600  

Engineering Biological Wastewater Treatment for The Removal of Hazardous Chemicals from Activated Sludge Plants

Reference: 17/WW/04/19
ISBN: 1 84057 847 5
Published Date: 13/12/2017

The aim of this project was to assess if biological treatment processes at wastewater treatment works could be engineered to improve the efficiency of hazardous chemicals (HCs) removal. 

In this case, the effect of the engineering process parameters Solids Retention Time (SRT), Hydraulic Retention Time (HRT), temperature on microbial diversity were studied to identify those conditions that were most conducive for microbial degradation of HCs.

Price: £50  

Phosphorus speciation (ortho/total/SRP) - does it matter?

Reference: 17/WW/20/8
ISBN: 1 84057 843 2
Published Date: 07/10/2017

Wastewater treatment works represent an important contributor to the phosphorus load in waterbodies. Analysis of data collected for the Chemical Investigations Programme indicated that metal dosing for phosphorus reduction has a significant impact on the relative proportions of Soluble Reactive Phosphorus (SRP) and Total Phosphorus (TP) in effluent. Where dosing is applied the SRP/TP ratio can be as low as 30%, but can also be highly variable. 

Analysis of field data from 10 catchments collected for this study indicated that phosphorus speciation in rivers is not the same throughout the catchment or throughout the year. The assumption that all reactive phosphorus is soluble is incorrect for areas with elevated iron, while higher in-river suspended solids levels lead to lower SRP/TP.    

It is recommended that a clearly defined methodology for the determination of phosphorus in effluent and surface waters is established, and the link between SRP and biota is explored further.   

Price: £500