Treating Sulphate Reducing Bacteria 1

[Inchtain]

Hello,

We have tried injecting small dosages of Chlorine into a Treated Water Tank at an NGL Plant, in addition to the injection of the Biocide. The results were marvelous and the bacteria was dramatically decreased.

However, I wonder if there is cons and pros for continuing injecting the Chlorine inside the Tank for the process and the equipment, factoring that the treated water is used as a cooling medium in a closed circuit.

Thanks and best regards

 

[EdStainless]

What are you actually injecting, Hypo? or some other form?
Are you measuring the active amount of Cl residual in the tank?
You need to measure the results.
Are you doing anything to reduce nutrients in the water?
What is your pH range? is it correct for your chlorination treatment?
And about 20 other questions.

 

[hacksaw]

Your materials of construction, ppm of Cl-, and service temperature.

What is being done with the treated water, downstream.

 

[EdStainless]

I presumed that he knew that he could be destroying his system.
That is why you need to measure and control tightly.

 

[georgeverghese]

Glutaraldehyde is much less corrosive and may work just as well on anaerobic SRB . Papers on the net claim ethylene diamine disuccinate works to enhance the efficiency of glutaraldehyde - check it out.

https://www.sciencedirect.com/science/article/abs/pii/S096483050900167X

 

[pierreick]

Hi,
Get the support of specialist, the one who sells you chemicals for your treatment plant. He can perform tests at your facility and adjust the treatment.
This is an area where experts are needed.

Pierre

 

[Inchtain]

Thanks for sharing your thoughts

In fact, we have just done a experimental trial, and what we would kindly like you sharing some tips or advices to reach a quite typical procedure.

The material for tank, piping and equipment are steel.

Only biocide and oxygen scavengers are currently used for the treatment.

We wonder if the idea is practical and to which extent it may affect the facilities?!

Thanks

 

[EdStainless]

No pH control?
No scale inhibitors?
You need some expert help.
Often chlorination is done in two steps.
There is a constat low level treatment with periodic bursts.
But you need to be measuring things to keep them in balance.
A wrong move that drives the pH low or results in very high Cl could take years off of your systems life in a couple of hours.

 

[georgeverghese]

In a well designed and commissioned closed loop cooling system, biocide and corrosion inhibitor injection would be a preventative measure. How did SRB get into this TW cooling system in the first place ?

What is this "treated water" ?