Organic Coagulant (In-line Coagulation)

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Dear Members, 

Does anyone have experience in using organic Coagulant before media filter? 

I need an approximate on required dosage range and a good supplier and model of the product.

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11 Answers

  1. dear Ali,

    Have a look at the offerings from Hach, www.hach.com, as they do have off-the-shelf Real Time Controllers (RTC's) that can be used for dosing purposes.

    https://www.hach.com/process-management/real-time-controls-rtc/family?productCategoryId=35547627776

    The do also have TOC or COD (lab, on-line) offerings in their program too!

    Best of luck and let me know if there's anything else.

    Robert

  2. Organic Coagulant are of Synthesized Polymer or from the vegetable origin. Moringa Oleifera Seed_Powder can be used as coagulant aid. It is generally use as coagulant aid. The dozes are to be determined with Jar Test. I have used the dozes between 0.25 to 2 PPM range.

    Rajendrakumar Saraf

  3. Dear Ali Salman, We have invented a unique organic floculant and bactericide, all in one solution, that is ideal for all sewage treatment plants around the world. Its time that we replace all inorganic compunds like chlorine, Alum with organic coalgulants.

    please click on this link https://youtu.be/p92q7tpFQHk

     

    I liter of Ecoclean can treat 25,000 litres of sewage

    Its being used in over 10 sites in India. looking for your feedback and comments.

    sudarshan

  4. I would definitely recommend jar testing as mentioned by Bob Foerster. I assume the feed turbidity is low if direct filtration is practiced. I would also attempt optimising the velocity gradients if possible to produce small compact floc as opposed to large flocs that would tend to result in shorter filter runs. Inefficient coagulation/flocculation (i.e. velocity gradient distribution and duration) would tend to result in larger flocs and incomplete destabilisation and coagulation before fitration.

  5. Be careful .If dosing rate is more & if the water after media filter passes through UF or RO then the polymer may cause irreparable damage to membranes.

  6. The polymer I have seen most often used as a filter aid is the nonionic type.  Very low doses are appropriate, balancing efficient removal and shortened filter runs. It is a trial and adjust situation. Suggest for any candidate product, jar test to mimic your upstream processes and then dose the supernatant and run it through membrane filter on the test bench to see how it behaves  with respect to plugging. 

    Please be aware that the acrylamide monomer which is normally present in small amounts in polyacrylamides can be a contaminant if not kept to a minimum by controlling dosage.

  7. As Svein mentioned earlier, this is a question that can't be answered simply.  There are many organic coagulants as well as inorganic/organic blends from which to choose.  The choice and dosage depends on many factors (type and level of contaminant, mixing energy, contact time, etc.).  So, choosing the correct polymer and dosage should be done initially by jar testing, followed by a pilot/trial.  There are also many good chemical companies that provide polymers, but I would go with one that is well established and has a well trained sales force since determining the correct treatment protocol is partly science, partly art.  Lastly, be careful with some of the organic polymers if used prior to a media filter.  Some polymers (DMA/EPI's, as an example) can potentially foul the media if grossly overfed.  This is especially true for organic flocculants, if you are using them in conjunction with the coagulant.

    Good Luck.

  9. always welcome ,stijn@aquatreat.be

  10. This is a question that is quite hard to give an perfect answer on. (how long is a rope) It has to do with the state of the water you are treating. We in Sorbwater Technology normally use between 2 and 6 ppm.  But it is hard to predict. And yeas, all our coagulants and flocculants are green, non-toxic 100% biodegradable.

    ses@sorbwater.com 

  11. Dear Mr. Ali

    Regarding for organic polymer feed inline to complete co aggulation process. For my opinion you have to control the dosing and flow with optimum dose because if you feed more this will be effect to media but I do not khow your process connected with fixed film AD or Media AD or not??. So I need more details if you can share all data.

    AGGIE

    Energy and Envi Consultant

    BKK Thailand

    aggasit2012@gmail.com