A large dose… an innovative approach to eutrophication

September 4, 2019

Phosphorus in wastewater is a key cause of eutrophication which is the over-enrichment of lakes and other surface waters from mineral and organic nutrients. It stimulates excessive growth of microscopic algae and plankton, creating a dense algal bloom, where the subsequent death and bacterial decomposition strips the water of its oxygen and creates an unhealthy environment. Eutrophication is a huge concern as many waterways and lakes in the UK are currently failing to meet the strict standards set for nutrient levels under the nation’s Water Framework Directive.

Agricultural fertiliser run-off from fields, detergents from household drains, and waste from various industries, are the main causes of phosphorus in the water. The levels in the discharges from municipal and industrial wastewater treatment plants must be controlled to minimise eutrophication issues. Such issues include increased purification costs to diminished recreational and wildlife conservation, loss of fish and other livestock, and potentially lethal effects from toxic algae in drinking water.

Drivers and challenges
Pressure from environmentalists and legislative demands in the UK to reduced phosphorus levels in discharged wastewater have been key drivers for one of WES’s key customers, Wessex Water. But how could the utility company find a new water treatment to tackle these issues, that was both cost-effective and practical, as well ensuring health and safety remained a focus?

One effective and commonly used step in the removal of phosphorus is to dose water with ferric chloride. And, so seeking increased or upgraded ferric dosing at multiple locations, Wessex Water issued a framework tender call, to which WES Ltd responded.

The first challenge for WES was to create a dosing system flexible enough to meet all control requirements and other product standards relating to Wessex Water, other water utilities and approved suppliers. An aspect essential to the system’s practicality was its size and weight. Every detail of the design also had to be weighed up in terms of its cost, to ensure the overall price was competitive. Ensuring they were resourceful and efficient with timings due to the potential risks poor weather might impact the project, were crucial considerations too.

WES established that it was able to answer these challenges and had the necessary equipment and capacity to manufacture, handle and transport units of each size. After presenting an outline plant design, its specialists worked closely with Wessex Water’s internal Engineering and Construction project team on developing it to meet their specific operational needs.

A package for all sites
Their innovative approach and thinking resulted in a cost-effective, compact and versatile package. Furthermore, its standardised approach, with broad applicability, enabled just two size variants, 5,000 and 10,000 litres, to address the different circumstances required at a large number of sites.

The use of a common rather than bespoke design contributed to the solution’s cost efficiency. Further time and expense were saved by fully constructing and testing each package in the controlled conditions at the WES factory in Basingstoke, before delivery, instead of assembling them on site.

Even the largest units could easily be handled in one lift and safely transported on a single, non-articulated, flatbed truck. Meanwhile, easy carriage and there relatively small dimensions gave them flexibility for installation on disparate sites, where space was often at a premium and the terrain could prove to be challenging.

The advantages of reducing time and labour costs meant that the number of personnel needed on site was also minimised. Moreover, the duration of their exposure to associated health and safety risks was especially welcomed, in view of the added hazards and complexities sometimes posed by adverse weather conditions.

Successful co-operation
Design, delivery and installation of the ferric chloride and ferric sulphate units initially ordered by Wessex Water took 9 months and the project was completed in summer 2018. Since then, WES Ltd has received dozens of orders for the supply of 5,000 and 10,000 litre systems by water utility companies and their contractors.

To WES, this project was particularly important as it established the company’s first formal framework co-operation with Wessex Water. For the water industry, that co-operation has produced a practical, affordable and adaptable answer to the challenge of complying with legislation aimed at reducing phosphorus levels. Its positive environmental impacts should be far-reaching.

For further information on how to remove phosphorus more cost-effectively, please see our white paper on the subject.

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Les Bunce

Hire Business Manager

Les Bunce is Hire Business Manager. He leads the WES Hire Business responsible for managing the supply of our Temporary Chemical Dosing hire fleet on both a planned and emergency basis. Les has over 25 years’ experience in the hire industry and fully understands our customers’ hire requirements.

Patrick Fisher

Projects Director

Patrick Fisher is Projects Director. He leads the business stream responsible for project management, design, engineering, manufacture and delivery of “Capital project” chemical dosing systems. A degree qualified engineer with over 10 years’ experience working in fluid delivery solutions to the water, general industrial, petrochemical, and food & beverage industries.

Bob Cook

Senior Proposals Manager

Bob Cook is Senior Proposals Manager. After completing a traditional engineering apprenticeship at the Royal Aircraft Establishment, Bob was one of the original partners who started the business in 1986. Bob now applies his considerable experience to developing proposals & solutions to meet customer requirements, as well as providing technical support & passing on knowledge & expertise to colleagues across the wider WES business.

Ian Price

Dosing Products Business Manager

Ian Price is WES Dosing Products Business Manager, leading the business stream responsible for delivering a wide range of standardised chemical dosing packages, ad-hoc dosing needs and ‘off the shelf’ dosing products & solutions. A mechanical engineer with over 20 years’ experience in fluid handling solutions into the water, petrochemical, pharmaceutical and food & beverage markets.

Jamie Cole

Operations Director

Jamie Cole is Operations Director. Jamie joined the business in 2018 bringing career long experience in a variety of operational roles – including service delivery to the property and utilities sectors. Jamie is responsible for the management of all operational activities of the business including the repair, maintenance & refurbishment business stream, and our site installation and workshop manufacturing teams. Jamie also forms part of the senior management team of WES.

Graham Ward

Business Development Director

Graham Ward is Sales and Marketing Director. His extensive experience includes a number of senior roles working for various SMEs and large organisations in the water, power generation, petrochemical, marine and food & beverage industries. As a qualified marine engineer, Graham has established his career in Sales and Business Development and is responsible for the business development, marketing and sales of systems, products and services across WES.

Carl Millington

Non-Exec Director

Carl joined WES as Non-Exec chairman following an appointment via the Business Growth Service to assist the business with growth strategy. A highly experienced Business Mentor, Coach, Managing Director & Non-Exec Chairman, having led product, manufacturing, contracting and service provider businesses for nearly 30 years. A strong track record of market, sales and profit growth within a diverse range of sectors.

Core competencies include business growth strategies, board & business leadership, strategic planning, sales & marketing management, P&L & balance sheet management, acquisitions, divestments, outsourcing, TUPE transfer, mentoring & coaching.

Kevin Wheeler

Managing Director

Kevin Wheeler is Managing Director. Kevin trained as an Engineer at the Royal Aircraft Establishment and joined the business in 1989. Kevin now leads the Board of Directors setting strategy and defining priorities to meet the business objectives & growth aspirations whilst adding experience to technical issues where required.