Thames Water Utilities Ltd, known as Thames Water, is the private utility company responsible for the public water supply and waste water treatment in large parts of Greater London, the Thames Valley, Surrey, Gloucestershire, Wiltshire, Kent, and some other areas of the United Kingdom. Thames Water is the UK's largest water and wastewater services company, and supplies 2.6 gigalitres of drinking water per day, and treats 4.4 gigalitres of wastewater per day. Thames Water's 15 million customers comprise 27% of the UK population.Thames Water is responsible for a range of water management infrastructure projects including: the Thames Water Ring Main around London; Europe's largest wastewater treatment works and the UK's first large-scale desalination plant. Infrastructure proposals by the company include the proposed £4.2 billion London Tideway Tunnels, and the proposed reservoir at Abingdon, Oxfordshire, which would be the largest enclosed or bunded reservoir in the UK.Thames Water is regulated under the Water Industry Act 1991 and is owned by Kemble Water Holdings Ltd, a consortium formed in late 2006 by Australian-based Macquarie Group's European Infrastructure Funds specifically for the purpose of purchasing Thames Water. Other large shareholders in recent years include: BT Pension Scheme , the Abu Dhabi Investment Authority and the China Investment Corporation . The name of the company reflects its role providing water to the drainage basin of the River Thames and not the source of its water, which is taken from a range of rivers and boreholes. Wikipedia.
Thomas P.,Thames Water Utilities
Water and Environment Journal | Year: 2011
Domestic food waste disposers (FWDs) have recently come to prominence as a possible alternative for disposal of organic waste, to reduce the quantities of this type of waste sent to landfill. There has been little research undertaken on the potential effects of food waste on the wastewater system, and it is believed no previous practical studies have been undertaken in the United Kingdom. In this study, food waste was ground in an FWD and analysed for chemical oxygen demand (COD), biological oxygen demand (BOD), ammonia, total nitrogen, total phosphorus, total suspended solids and rapidly settleable solids to determine their effects on the wastewater system. The largest impacts were on COD, BOD and suspended solids, compared with the amounts of these determinands that currently arrive at sewage treatment works (STW). Experiments using settled samples showed that a relatively high proportion of nitrogen, phosphorus, COD and BOD would pass through to secondary treatment at the STW. © 2010 Thames Water Utilities Limited. Water and Environment Journal © 2010 CIWEM. Source
Hatt J.W.,Cranfield University |
Germain E.,Thames Water Utilities |
Judd S.J.,Cranfield University
Water Research | Year: 2011
A range of coagulant chemicals and doses, up to 2 mg/L, were trialled on a microfiltration-based indirect potable reuse (IPR) pilot plant to evaluate their impact on membrane reversible and irreversible fouling. Jar tests revealed these doses to have negligible impact on organic matter removal, whilst scoping pilot trials showed them to have a positive impact on fouling rates. Initial trials carried out over a 6-h period suggested that ferric sulphate was the most promising of the coagulants tested with regards to irreversible fouling. Extended five-day trials using ferric sulphate at 0.5 mg/L were conducted at fluxes of 40-50 l/(m 2h) (LMH). Operation at 50 LMH without coagulant resulted in rapid fouling and a subsequent shortening of the chemical cleaning interval. The addition of the ferric coagulant resulted in a reduction in both reversible and irreversible fouling to those levels experienced at 40 LMH, enabling sustainable operation. The use of low levels of coagulant thus enables the pilot plant to operate at a 25% increased flux, equating to a 20% reduction in membrane area and overall savings of >0.1 p per m 3 for a seven year membrane life. © 2011 Elsevier Ltd. Source
Raffin M.,Cranfield University |
Germain E.,Thames Water Utilities |
Judd S.J.,Cranfield University
Separation and Purification Technology | Year: 2012
Microfiltration (MF) and ultrafiltration (UF) membranes, widely used for pre-treatment of reverse osmosis (RO) processes in wastewater recovery, are nonetheless subject to fouling which considerably reduces the process throughput. In this study, reversible and irreversible fouling of a pilot MF process treating secondary wastewater effluent were measured over an 18 month period and data pertaining to common feedwater quality determinants collated. Fouling rates were quantified as a function of the key operating parameters (flux and backwash interval) and water quality determinants (turbidity and temperature). Fouling was found to increase exponentially with turbidity. Irreversible fouling was promoted only by increased flux and backwash interval, while reversible fouling rate depended on flux, turbidity and temperature. Some residual fouling, following the same exponential or power relationship with the flux as that manifested at different turbidities, was observed at zero turbidity. Operation above the so-called critical flux was sustained through appropriate backflushing. It was concluded that the sustainable flux concept was a more appropriate basis for process control and optimisation than critical flux, since the latter does not take into account process economics. © 2012 Elsevier B.V. All rights reserved. Source
Agency: GTR | Branch: Innovate UK | Program: | Phase: Feasibility Study | Award Amount: 24.38K | Year: 2013
UK and European wastewater industries are struggling to identify and install the technology necessary to meet the ever more stringent demands placed on them through legislation. Such regulations are demanding they produce effluents with lower nutrient contents whilst reducing the energy use of their processes at the same time. Microalgae if used properly can treat these wastewaters in an efficient cost effective manner, but in order to do this at industrial scales a significant step forward in photobioreactor design and conditions is needed especially if the system is to be operated in temperate climates such as Northern Europe. Industrial Phycology has designed a system using the latest methods and technology to meet this challenge, and allow industry to produce effluents that will meet current and future regulations and help prevent eutrophication of the environment.
Agency: GTR | Branch: Innovate UK | Program: | Phase: Collaborative Research & Development | Award Amount: 155.29K | Year: 2010
The public description for this project has been requested but has not yet been received.