Dangers of H2S and salt air Hydrogen sulfide gas (H2S) forms in wastewater collection systems and can create septic conditions.
This gas has a particularly destructive oxidizing effect on aluminum in air conditioning coils and copper tubing, making coating all these surfaces mandatory.
This is why many HVAC contractors recommend coating every metal surface on air conditioning systems.
“The coil and tubing will still last longer than it would being uncoated because that is the most vulnerable part of an air conditioning system.
But eventually the uncoated surfaces will crumble around the coated parts.
Watson weighed in on his experiences with Baton Rouge wastewater facilities.
“The natural vibration of an air conditioning system will crack most coatings over time and when we do maintenance service on a wastewater unit, we have to move parts of the system around to do our inspections and most of the coatings tend to crack.
A study conducted by the Army Corps of Engineers in 2016 in its Engineer Research and Development Center stated: “Phenolic coating adhered better to the aluminum and copper than did the other coatings tested, so phenolic coatings still show a better adhesion to aluminum and copper than the newer coating method/systems.” “While phenols were first discovered in 1834, our engineers and scientists are constantly developing new formulations and applications, so our latest phenolic coating is really a new product,” said Christina Campbell, president of AME-TechniCoat.
“The aluminum in the coil deteriorates over time due to oxidation in the hydrogen sulfide and salt environment.” The metal breaks down and becomes less efficient, he explained, requiring more energy to do the same job.
We guarantee our coatings for 10 years.” “We have started to recommend Trane AC systems when the city buys from us,” said Watson.

Some of the world’s biggest fashion brands are using a fibre whose production can be highly dangerous and polluting, new research shows.
Dirty Fashion a report published last week by the Changing Markets Foundation reveals that fashion brands including H&M, Zara and Marks & Spencer, are buying viscose from highly polluting factories in Asia to use in their clothes.
Villagers have stopped drinking contaminated groundwater and in some cases they can no longer swim or fish in local rivers and lakes.
The Changing Markets investigation in China focused on factories in the eastern provinces of Hebei, Jianxi and Shandong.
Major brands, such as H&M, Zara, Tesco and M&S were found to be buying from some of the factories investigated.
At a site in Madhya Pradesh, India, villagers reported devastating impacts on health, including cases of cancer and birth deformities suspected to be caused by industrial pollution in their water supply.
They are located downstream from one of the world’s largest producers of viscose, Grasim Industries, owned by multinational conglomerate Aditya Birla Group, which is selling its viscose to H&M, Inditex, Asos, Next, United Colours of Benetton, Burton, Docker’s and Levi’s – to name just a few.
The viscose industry is also polluting rivers in Indonesia.
Villagers were found washing intermediary viscose products in the river on behalf of manufacturers, directly exposing themselves to toxic chemicals contained in the fibre and adding to the waterway’s already considerable pollution load.
This dialogue can be expanded to include water pollution and chemical use in viscose manufacturing.

French Creek stench from rotting herring roe.
Regional District says it’s fielding complaints from people who think odour is coming from nearby water pollution control centre.
The herring spawn in March on the east side of Vancouver Island was one of the largest in recent memory and now two months later, those rotting eggs on local beaches are a daily reminder.
“You wouldn’t want to be on the beach” said a local resident.
“Almost like a treatment plant.” So it’s no surprise then that the Regional District of Nanaimo has been fielding numerous complaints from residents wondering if the smell is coming from the nearby French Creek Water Pollution Control Centre.
So you have a large area of organic matter on the beach.
It’s been cooler than normal meaning the eggs haven’t decomposed as quick as in other years.
“hydrogen sulphide is rotten eggs and that’s exactly what what you have on the beach is eggs, tiny eggs rotting” added De Pol.
“Now hydrogen sulphide is associated with the breakdown of other organics and we happen to have a wastewater treatment plant on the opposite side of the road that does from time to time produce that same odour.” Some residents of the French Creek area say it’s actually worse there because of a breakwater at the marina that results in more seaweed and eggs being left on the beach.
“They’re extending the breakwater and the more they extend the breakwater, the bigger a catch basin is formed.”