Day: 1 April 1999
Plumbosolvency control and minimisationArticle Title
Although water leaving a treatment works is almost entirely free of lead, by the time it reaches the taps of about nine million homes it has picked up lead from the pipes and fittings. Andrew Elphinston, senior chemical engineer for Binnie Black & Veatch, examines the issues arising from plumbosolvency and what can be done to comply with legislation and reduce the risk to health.
Treating seasonal algal blooms
Seasonal algal blooms can cause major problems in water treatment works, particularly those where treatment is by direct filtration. Counter Current Dissolved Air Flotation (COCODAF) is now established as a high-rate process for the treatment of low-turbidity, coloured or algal-laden water writes Paterson Candy.
. . . that damned elusive coliform
Yorkshire Water Services, in common with other water companies, have been attempting to minimise the incidence of low level coliforms in distribution systems with mixed success writes JG O'Neill public health scientist and J Banks process engineer at Yorkshire Water Services.
Pipes bursting with success
The Met Office, in association with Thames Water, recently launched a Œstate-of-the-art' weather forecasting service, designed to give advance warning of potential burst situations, particularly in underground cast iron pipes, when sub-zero temperatures are anticipated reports Brian Dumbleton.
Integrating approach to maintaining quality
Bob Borrill, water supply process manager at West Midlands Region of Severn Trent Water, explains how the collection and interpretation of data, often provided by computer control systems, is vital in the drive to improve the standard of service provided to its customers.
Setting the standards in drainage
Specifiers and installers of plastic underground drainage systems already know what benefits the material can offer. Lightweight, easy to install, durable and cost-effective, plastic has taken the underground drainage market by storm over the last 20 years. But the market is constantly changing. Frank Jones, director of the British Plastics Federation Pipes Group, explains the latest European legislation covering underground drainage systems.
Action inspires action. Stay ahead of the curve with sustainability and energy newsletters from edieSubscribe