<p>There are multiple companies that provide COD sensors...
<a href="https://realtechwater.com" rel="nofollow noreferrer">Real Tech Inc</a>, <a href="https://www.lar.com/products/cod-analysis/cod-analyzer-quickcodultra.html" rel="nofollow noreferrer">LAR</a>, 
<a href="http://www.detectronic.org/products/the-orakel-system/toc-cod-sensor/" rel="nofollow noreferrer">Detectronic</a>, <a href="https://www.endress.com/en/field-instruments-overview/liquid-analysis-product-overview/COD-analyzer-CA80COD" rel="nofollow noreferrer">Endress-Hauser</a>, and <a href="https://www.ysi.com/carbovis" rel="nofollow noreferrer">YSI</a>...
but they all use <a href="https://en.wikipedia.org/wiki/Spectrophotometry" rel="nofollow noreferrer">spectrophotometry</a> methods.</p>

CC BY-SA 4.0
2018-10-25T19:35:29.867Z
I'm guessing you can't really use spectrophotometry too easily in a wastewater situation then?  Would be a great answer if you could note why that is (have a hunch, but certainly not familiar with the subject enough!).  Welcome to the site, and thanks for the useful info :)
JeopardyTempest
CC BY-SA 4.0
2018-10-25T18:16:56.433Z
2019-05-27T00:53:36.783Z
2019-05-27T00:53:36.783Z
mohammad farhady
<p>If you want a real-time BOD, COD or coliform sensors look at Proteus Instruments. They can provide real time data even in wastewater applications and almost need no maintenance. The results are pretty impressive. <a href="http://www.proteus-instruments.com" rel="nofollow noreferrer">http://www.proteus-instruments.com</a>. They now have dealers throughout the world. </p>

CC BY-SA 4.0
2019-08-07T22:20:56.037Z
2019-08-07T22:20:56.037Z
Rob Stevens
<p><a href="http://realtechwater.com/municipal-sewage-monitoring/" rel="nofollow noreferrer">Realtech.com</a> has a runtime monitoring senser solution for BOD/COD Sensor.
My understanding is that COD is straight-ward to measure in real-time but BOD monitoring cannot be done in real-time.   The sensor listed uses a BOD equivalent monitoring technique.  </p>

<p>The governing environmental regulatory agencies for a specific waste water facility should have public statement of acceptable BOD monitoring methods.</p>

CC BY-SA 3.0
2017-03-13T16:56:12.877Z
2017-03-13T16:56:12.877Z
Earth Science Expatriate
<p>There is a requirement to measure BOD/COD in a wastewater treatment plant in real time. Is it possible? And if so are there any sensors available in the market for it?</p>

<ul>
<li>COD: <a href="https://en.wikipedia.org/wiki/Chemical_oxygen_demand" rel="nofollow noreferrer">Chemical Oxygen Demand</a></li>
<li>BOD: <a href="https://en.wikipedia.org/wiki/Biochemical_oxygen_demand" rel="nofollow noreferrer">Biochemical Oxygen Demand</a></li>
</ul>

<geochemistry><remote-sensing><biogeochemistry>
Can you measure BOD/COD real time using any sensor?
skyx
# Can you measure BOD/COD real time using any sensor?

(Asked by: username_0 on 2017-03-12)

There is a requirement to measure BOD/COD in a wastewater treatment plant in real time. Is it possible? And if so are there any sensors available in the market for it?

* COD: [Chemical Oxygen Demand](https://en.wikipedia.org/wiki/Chemical_oxygen_demand)
* BOD: [Biochemical Oxygen Demand](https://en.wikipedia.org/wiki/Biochemical_oxygen_demand)

**Tags:** geochemistry, remote-sensing, biogeochemistry


---

## 3 answers

### Answer by username_4 on 2017-03-13. Score: 3 | Accepted answer

[Realtech.com](http://realtechwater.com/municipal-sewage-monitoring/) has a runtime monitoring senser solution for BOD/COD Sensor.
My understanding is that COD is straight-ward to measure in real-time but BOD monitoring cannot be done in real-time. The sensor listed uses a BOD equivalent monitoring technique.

The governing environmental regulatory agencies for a specific waste water facility should have public statement of acceptable BOD monitoring methods.


---

### Answer by username_1 on 2018-10-25. Score: 3

There are multiple companies that provide COD sensors...
[Real Tech Inc](https://realtechwater.com), [LAR](https://www.lar.com/products/cod-analysis/cod-analyzer-quickcodultra.html),
[Detectronic](http://www.detectronic.org/products/the-orakel-system/toc-cod-sensor/), [Endress-Hauser](https://www.endress.com/en/field-instruments-overview/liquid-analysis-product-overview/COD-analyzer-CA80COD), and [YSI](https://www.ysi.com/carbovis)...
but they all use [spectrophotometry](https://en.wikipedia.org/wiki/Spectrophotometry) methods.

> **Comments:**
> **username_2**: I'm guessing you can't really use spectrophotometry too easily in a wastewater situation then?  Would be a great answer if you could note why that is (have a hunch, but certainly not familiar with the subject enough!).  Welcome to the site, and thanks for the useful info :)  

---

### Answer by username_3 on 2019-08-07. Score: 0

If you want a real-time BOD, COD or coliform sensors look at Proteus Instruments. They can provide real time data even in wastewater applications and almost need no maintenance. The results are pretty impressive. <http://www.proteus-instruments.com>. They now have dealers throughout the world.


---

