#WishIknew – What is dissolved oxygen?


When you have a question about process automation that needs a short answer, let us know with #WishIknew and @Visaya! We’ll reply with a #WishIknew post. It’ll give a quick explanation, then some related articles, videos, or reviews if you want to know more.

I wish I knew what dissolved oxygen is!

We all know that we need oxygen to keep breathing, right? We get this oxygen from the atmosphere. In fact, oxygen makes up one-fifth of the gas in the atmosphere.

But what about creatures underwater? Yes, they also need oxygen to breathe. So where they get it? They use oxygen dissolved in water – dissolved oxygen (DO).

Dissolved oxygen is crucial to underwater life. In fact, different animals need different amounts of oxygen to live. The amount of salt and heat present in the water affects the DO concentration. This explains why some fish live only in certain places in the world.

dissolved oxygen
Courtesy of Fondriest Environmental

In process automation, dissolved oxygen factors into a variety of applications – like the water and wastewater industry, naturally. When cleaning water with aerobic microorganisms, you’ll need enough oxygen in the water for them to work. And if you want to reuse this clean water, you’ll need to check its oxygen level.

Agitator speed, air supply, or pressure in tanks can also affect dissolved oxygen levels. If you need a constant oxygen concentration in your product, then you’ll need to monitor that dissolved oxygen. Yes, DO is important!

Related tags: #WishIknew Analytics Basic Dissolved Oxygen Dissolved Oxygen Sensor English Principle
#WishIknew - What is dissolved oxygen?
How to measure turbidity
What is chlorine and why do we measure it?
#WishIknew – How do I measure dissolved oxygen in liquids?
#WishIknew - How do I find solution's concentration with conductivity sensors?
See related devices