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Nick Gray

@nfgray

Environmental scientist and wastewater engineer based at Trinity College Dublin, working as advisor and writer on all things to do with the environment. Author of 17 books and numerous research papers, author of 'Facing upto Global Warming'.

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17.11.2024
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Latest posts by Nick Gray @nfgray

This administration is really at 'a four year low'

13.02.2026 08:58 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This man has caused so much suffering around the world. A child like leader who has destabilised the world and caused more damage than any other in the modern era.

13.02.2026 08:54 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Delighted that my latest book 'Anaerobic Wastewater Treatment' has been published by World Scientific. It explores the exciting new range of anaerobic processes that are transforming WWTPs into resource recovery centres. doi.org/10.1142/q0507
#wastewater #anaerobic #biogas #circulareconomy

26.11.2025 11:45 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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I have really enjoyed reading this super new collection of poems from Victoria Melkovska. I really recommend it. I found it heartwarming and personal. A great new talent in Irish poetry. www.dedaluspress.com/authors/melk...

08.10.2025 14:46 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Humiliating senior military leaders in public is not a good idea.

01.10.2025 12:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Happy Birthday John

10.09.2025 12:51 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Fermentation

25.08.2025 12:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It is always best not to use new chemicals and materials without proper environmental/risk assessment. Constant add on technology is expensive and problematic. But as consumerism/population expand. waste and #wastewater management will always be trying to catch up, it won't always succeed.

23.08.2025 12:42 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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EU fire data was updated this morning. Here's the total area burnt across the bloc this year so far. A record for this time of year. forest-fire.emergency.copernicus.eu/apps/effis.s...

19.08.2025 07:26 πŸ‘ 117 πŸ” 84 πŸ’¬ 1 πŸ“Œ 6

Great to see the exciting new electrochemical oxidation technologies for #PFAS destruction being rolled out to enable new drinking water limits to be met. New systems for PFAS destruction in #biosolids also being tested with hydrothermal alkaline and plasma-based systems on the table. #wastewater

19.08.2025 08:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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11.08.2025 18:03 πŸ‘ 492 πŸ” 174 πŸ’¬ 13 πŸ“Œ 10
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No AI on Daniel O'Connell stamp with TV aerial - An Post An Post has said AI software was not used to generate the artwork on a stamp, which appears to show a television aerial on a building behind the nationalist leader Daniel O'Connell.

#nicetry The artist who added a TV aerial in the new stamp from An Post depicting Daniel O’Connell in Dublin in 1844 apparently "included some sort of visual signal to link to the very modern global range and impact of O’Connell". www.rte.ie/news/ireland...

31.07.2025 17:01 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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#GreenRoofs are increasingly common in urban areas but given the current combination of heat and water shortages are they always safe? They also require significant structural support. Good for biodiversity not as good as painting a roof white for #emissions and cooling buildings at night

23.07.2025 07:45 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
swallow perched on top of grey coloured twisted rubber car aerial. The cars are covered in cream covers to keep clean from droppings and they are all inside a traditional steel barn

swallow perched on top of grey coloured twisted rubber car aerial. The cars are covered in cream covers to keep clean from droppings and they are all inside a traditional steel barn

A first for me. We have #swallows in all our outbuildings which is a bit of a problem as they are so messy...hence the cars are covered as they nest above them. This one has been perched on the car aerial for the past month and spends hours watching other swallows in action #birds #conservation

22.07.2025 09:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Lovely day in Enniscorthy in Co. Wexford #Ireland #Wexford

20.07.2025 16:41 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Amazing to see this seismic wave thanks to @earthscope.org‬
#environment

17.07.2025 15:09 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Daniel Coyle (IRL) riding Legacy

17.07.2025 15:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Large erect pink flowers 8 inches in diameter on a large circular cactus alongside a wood pile surround with old plant pots and leaves from tomato plant

Large erect pink flowers 8 inches in diameter on a large circular cactus alongside a wood pile surround with old plant pots and leaves from tomato plant

large pink cactus flower

large pink cactus flower

Forgot that I had left this old Easter Cactus in the Polytunnel until it decided to remind me!

17.07.2025 13:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
picture of 1.8 metre high hogweed set against a very green vegetative background with long thick stalks  supporting umbrella like heads of small white flowers and large frond like leaves

picture of 1.8 metre high hogweed set against a very green vegetative background with long thick stalks supporting umbrella like heads of small white flowers and large frond like leaves

Each year I have to cut down the hogweed at the bottom of my percolation area where I have a small willow stand. It's a lovely plant but so invasive producing massive seed heads. Creating a range of habitats requires a lot of management #gardening #conservation #nature

17.07.2025 10:23 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Lovely Holly Blue #butterfly just outside my office.

16.07.2025 15:20 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

With the closure of banks, An Post has become the major lifeline for rural communities in #Ireland and must be fully supported by the government without further cutbacks in services. They are the most reliable and sustainable delivery service, providing vital community door to door support. #anpost

16.07.2025 12:28 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Absolutely @minibubbly.bsky.social‬. Wastewater surveillance offers us unprecedented opportunities to improve community health and control disease outbreaks, focussing action where needed and allowing more precise predictive and risk management. #wastewater #measles #pathogens

16.07.2025 12:23 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
A chart showing superbug infections in Ireland.

A chart showing superbug infections in Ireland.

A chart showing Covid wastewater levels in Ireland over time.

A chart showing Covid wastewater levels in Ireland over time.

The Covid wastewater chart overlaid on the superbug chart.

The Covid wastewater chart overlaid on the superbug chart.

3 charts below:

1. Antibiotic-resistant "Superbug" cases in Ireland.

2. Covid wastewater levels in Ireland.

3. The charts overlaid & roughly synced for the same time period.

The pattern appears to show a connection between the peaks of Covid and peaks of superbug infections.

1/

17.06.2025 18:33 πŸ‘ 6 πŸ” 3 πŸ’¬ 2 πŸ“Œ 2
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Influenza A and B were reliably detected in wastewater, closely aligning with clinical trendsπŸ“ˆ. Novel methods to define flu seasons using wastewater data show promise for complementary community-level disease surveillanceπŸ‘©β€πŸ”¬. #PublicHealth #WastewaterSurveillance #Luxembourg

26.06.2025 06:22 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

This is very disconcerting when at last we can check the health of the population with a real chance of minimising disease outbreaks which is good for health and the economy. Also the other data we can get, including level of drug use etc., is invaluable in prioritising help at community level

29.06.2025 17:25 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

What an amazing WWTP. Thanks for sharing #wastewater #environment

29.06.2025 17:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Claire is quite right. It is far more sensible to prioritize the control methane emissions over CO2 emissions. #climateaction

29.06.2025 17:11 πŸ‘ 8 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0

One planet, one ocean, one atmosphere. We need to do the very best we can in the #wastewater industry to minimise what we discharge, especially when it comes to antibiotic resistant bacteria. So come on guys, let's make our effluents the very best we can.

29.06.2025 17:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Great example of low cost (passive) acid mine drainage treatment. The potential of #AMD is huge. Such small scale systems make a big difference and could be run by local communities with sensible funding. #wastewater #Circulareconomy

27.06.2025 15:01 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

38 large-scale illegal peat extraction sites and no-one seems to be able to shut them down! Ireland is great on regulations but extremely poor at enforcement. We need a new EPA with serious powers to protect our environment and enforce climate action.

27.06.2025 11:56 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0