Removal of natural organic matter (NOM) by ion exchange from surface water for drinking water production: a pilot-scale study( Journal, Desalination and Water Treatment ,Volume 57, 2016 - Issue 30,

• Article Removal of natural organic matter (NOM) by ion exchange from...

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Abstract: Natural organic matter (NOM) in drinking water causes esthetic concerns such as odor, taste, and color and is responsible for the disinfection byproducts formation during drinking water production. The goal of this study was to determine the efficiency of macroporous polyacrylic ion exchange resins for the removal of NOM as a function of empty bed contact time (EBCT), bed expansion, and regeneration procedure. Two resins were examined: the coarse Purolite®PPA860S and the fine Purofine®PFA860 resin. The tests showed that both resins are suitable for NOM removal. The reduction in particle size (beads of the fine resin were 18% smaller than those of the coarse one) of the fine resin had little effect on NOM removal, although the exchange capacity of the fine resin after regeneration was 12% higher than that of the coarse resin after multiple regenerations. The influence of 📷 (due to the re-use of the regenerating solution) was examined on the basis of a regeneration solution with only 📷. The test results showed no reduction in NOM removal during prolonged operation. Finally, it was concluded that the EBCT can be significantly reduced as increasing the flow velocity from 15 to 20 m/h did not result in a significant reduction in NOM removal efficiency.

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Dear Rohit,

Here is a link that might be useful.

https://link.springer.com/article/10.1007/s40726-015-0012-2

With my best regards

Prof. Bachir ACHOUR

Dear Rohit,

Thanks for the question. Thanks so much for Anoop Kumar and Prof. Bachir ACHOUR for their interesting contribution. Please, you can use the following link: Removal of natural organic matter by ion exchange. https://doi.org/10.1016/S0043-1354(02)00231-2 .

With my best regards!

Dr. Adel OUESLATI

Dear Rohit,

Considering that your question is about (residual) organic matter in wastewater which includes much more than NOM, I would recommend to consider a more sustainable solution. As opposed to physical-chemical technologies such as ion exchange, coagulation-flocculation, filtration, ... that only transfer residuals to a waste stream, most of the recalcitrant organics including NOM can be captured and fully biodegraded by advanced biological treatment that we developed and apply at full scale since more than 30 years.

If interested, I can send you more information via email.

Regards,

Bruno

Ion exchange media is specific to targeted soluble molecules, and not to a plethora of total solids in the source water. What is your goal?

The target wastewater stream concentration as well as the objective is important.

For drinking water objective, please look at this link.

(Natural organic matter removal by ion exchange at different positions in the drinking water treatment lane). https://repository.tudelft.nl/islandora/object/uuid:d85de25a-940c-4a52-8efc-03e35d642663/datastream/OBJ

I´d like to know the mechanism behind the capture of NOM, generated by chlorination of water, by strong anionic resins. NOM is supposed to be miscible with water instead of soluble.