Northumbrian Water creating gas from sewage

Engineer looking at the gas to grid plant
Engineer looking at the gas to grid plant

Northumbrian water has installed a gas to grid plant in Howden, North Tyneside at a cost of £8m. The plant will be used to inject gas captured from digesting sewage onto the grid. The grid plant is currently in the final stages of commissioning.

 

In a project nicknamed ‘Power from Poo’, Northumbrian Water has been generating electricity from the sewage treatment for more than three years, by utilising the methane gas released by bacteria digesting the sludge to drive turbines, in turn creating electricity.

 

The sludge is pre-treated after sewage treated by heating it to 165 degrees Celsius under six bars of pressure. At this stage, pathogens are destroyed and cell structures are broken down, making it easier for the bacteria to digest.

 

Prior to the gas then entering the grid, it is cleaned in water towers to remove impurities. Propane is also added prior to injection so that it matches gas currently on the grid.

 

Artificial odour chemical Butyl Mercaptan is also added to the naturally-odourless gas to give it its characteristic smell for safety reasons.

 

When commissioned, the gas to grid plant is expected to produce up to 88 million kilowatt hours of renewable energy per year, which is enough to meet the gas requirements of 5,000 homes. The £3m annual efficiency attributed to the plant will aid Northumbrian Water in maintaining amongst the cheapest bills in the utilities industry.

 

Northumbrian Water’s Wastewater Director, Richard Warneford, commented: “We are now able to produce both gas and electricity. More than 20% of our total power use is now from renewable energy sources including hydro power at our treatment works and reservoirs like Kielder Water.

 

We are leading the industry in pushing the bounds of technology and learning from the challenges of integrating the new gas plant with our existing advanced sewage treatment and electricity generation processes.”

 

The gas to grid plants is anticipated to be at 100% flow over the coming few months.

Please rate

Comments 

Ctrl + Enter

Most Read

IR35 coming to the private sector in 2020

IR35 coming to the private sector in 2020

Due to changes introduced in the Autumn Budget, from autumn 2020, off-payroll working rules which have only been applicable to the public sector will be also implemented in the private sector as well. What this means, is that the end client (hiring manager) of a worker will now be in the position

Ten highest paying I.T jobs in 2019

Ten highest paying I.T jobs in 2019

The I.T industry is arguably the most in-demand industry for technology/Engineering professionals. Once you have the right skill and certification, the I.T industry will jump at the chance to employ you and grant you a befitting role. From application developers to Data Engineers, the sector is in

Updates on the H2S project

Updates on the H2S project

In our modern world where a good transportation network and an effective communication system are two important factors necessary for the growth of any community, the need for more accessible cities which cater for these needs optimally while also taking into consideration, the economic side of

This website uses cookies to enhance your user experience. By continuing to use this site, you consent to our use of these cookies. See our Cookie Policy.